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Journal articles on the topic 'Bromo derivatives'

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Published: 5 June 2025

Last updated: 15 July 2025

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1

Drašar, Pavel, and Jiří Beránek. "2',3'-O-Carbonyl derivatives of 6-azauridine in the synthesis of its 5-substituted and 5'-deoxy derivatives." Collection of Czechoslovak Chemical Communications 52, no. 8 (1987): 2070–82. http://dx.doi.org/10.1135/cccc19872070.

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Preparation of 2',3'-O-carbonyl derivatives of 5'-deoxy-6-azauridine and 6-azauridine using 1,1'-carbonyldiimidazole has been elaborated. 5'-Chloro and 5'-bromo derivatives were prepared by treatment of the 5'-O-mesyl derivative with quaternary ammonium halides, 5'-chloro derivatives also by direct halogenation with thionyl chloride in hexamethylphosphortriamide or with tetrachloromethane, triphenyl phosphine, and dimethylformamide. Derivatives of 5'-bromo-6-azauridine were reduced with tributyltin hydride to 5'-deoxy-6-azauridine compounds. 6-Azauridine 2',3'-carbonate (IVa) and its 5'-deriva

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2

U., C. Mashelkar, and A. Audi A. "Synthesis of some novel 4-substituted coumarins having antibacterial activity (Part-I)." Journal of Indian Chemical Society Vol. 82, Mar 2005 (2005): 254–57. https://doi.org/10.5281/zenodo.5827011.

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Organic Research Laboratory. SS & LS Patkar College, Goregaon (W). Mumbai-400 062, India E-mail: ajayaaudi@rediffmail.com                                                        Fax : 91-22-28744755 <em>Manuscript received 13 February 2004, revised 1 September 2004, accepted 24 November 2004</em> Methyl coumarin-4-methyl acetate on bromination in dioxane or dichloroethane as solvent resulted in sidechain bromination giving a-bromo derivative. The same r

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3

Brindha, B., and R. Girija. "Molecular Docking, Dynamics Simulation, And in Silico DFT Studies Of Bromo [1,4] Benzodiazepine Derivatives Are Efficient Ways to Prevent Skin Cancer." International Journal of Membrane Science and Technology 10, no. 4 (2023): 2538–48. http://dx.doi.org/10.15379/ijmst.v10i4.3653.

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Studies have revealed that the most common kind of cancer in the world is skin cancer. Unrepaired deoxyribonucleic acid (DNA) in skin cells can cause genetic abnormalities or mutations that lead to skin cancer. Early detection is crucial because skin cancer is more treatable in its early stages and tends to gradually spread to other areas of the body. Early detection of signs of skin cancer is essential due to the high mortality, increasing morbidity and expensive medical care of the disease. The present study used ligand and structure-based analysis to calculate the interaction between bromo

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4

Pert, DJ, and DD Ridley. "Preparations of 2,4-Disubstituted Oestradiols." Australian Journal of Chemistry 42, no. 3 (1989): 421. http://dx.doi.org/10.1071/ch9890421.

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2,4-Dibromoestra-1,3,S(10)-triene-3,17 β- diol 3-(2'-hydroxyethyl) ether (8) undergoes reaction with copper(11) chloride/sodium methoxide to afford a 4-bromo [2,3]- dioxan derivative (9) as the major product together with a minor amount of a 2-bromo [3,4]- dioxan derivative (10). These compounds were used to prepare a number of 2,4-disubstituted oestradiol derivatives. � Alternative routes to other 2,4-disubstituted oestradiols are described.

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5

Zhu, Rong-Rong, Xi-Qiang Hou та Da-Ming Du. "Synthesis of Benzofuran Derivatives via a DMAP-Mediated Tandem Cyclization Reaction Involving ortho-Hydroxy α-Aminosulfones". Molecules 29, № 16 (2024): 3725. http://dx.doi.org/10.3390/molecules29163725.

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An efficient cascade cyclization strategy was developed to synthesize aminobenzofuran spiroindanone and spirobarbituric acid derivatives utilizing 2-bromo-1,3-indandione, 5-bromo-1,3-dimethylbarbituric acid, and ortho-hydroxy α-aminosulfones as substrates. Under the optimized reaction conditions, the corresponding products were obtained with high efficiency, exceeding 95% and 85% yields for the respective derivatives. This protocol demonstrates exceptional substrate versatility and robust scalability up to the Gram scale, establishing a stable platform for the synthesis of 3-aminobenzofuran de

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6

Dey, Supriya, and Narayanaswamy Jayaraman. "Branching out at C-2 of septanosides. Synthesis of 2-deoxy-2-C-alkyl/aryl septanosides from a bromo-oxepine." Beilstein Journal of Organic Chemistry 8 (April 10, 2012): 522–27. http://dx.doi.org/10.3762/bjoc.8.59.

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This paper deals with the synthesis of 2-deoxy-2-C-alkyl/aryl septanosides. A range of such septanoside derivatives was synthesized by using a common bromo-oxepine intermediate, involving C–C bond forming organometallic reactions. Unsaturated, seven-membered septanoside vinyl bromides or bromo-oxepines, obtained through a ring expansion methodology of the cyclopropane derivatives of oxyglycals, displayed a good reactivity towards several acceptor moieties in C–C bond forming Heck, Suzuki and Sonogashira coupling reactions, thus affording 2-deoxy-2-C-alkyl/aryl septanosides. Whereas Heck and So

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7

Glisin, Djordje, Olga Jovanovic, Gordana Stojanovic та ін. "Synthesis of methyl 3,4-anhydro-6-bromo-2-o-tert-butyldimethylsilyl-6-deoxy-α-d-allopyranoside from α-d-glucose". Journal of the Serbian Chemical Society, № 00 (2024): 49. http://dx.doi.org/10.2298/jsc230831049g.

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Some of simple carbohydrates and their derivatives are used clinically for the treatment of various diseases. Epoxide derivatives, which can be obtained by the intramolecular elimination of water from two vicinal hydroxyl groups, are stable, but sufficiently reactive compounds very often used as intermediaries in various syntheses. Synthesis of epoxide derivative, methyl 3,4-anhydro-6- bromo-2-O-tert-butyldimethylsilyl-6-deoxy-?-D-allopyranoside from ?-D-glucose was achieved in high yields in the minimal number of synthetic steps. Anhydrous glucose was used as a starting material which was tra

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8

Makhsumov Abdulhamid and Auesbaev Alisher. "SYNTHESIS AND PROPERTIES OF THE DIPROPARGYL DIETER DERIVATIVE 2-BROMINE-2- NITRO-PROPANDIOL-1,3 (BRONOPOL)." International Academy Journal Web of Scholar, no. 12(42) (December 30, 2019): 3–12. http://dx.doi.org/10.31435/rsglobal_wos/30122019/6839.

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    The article is devoted to a comprehensive study of 2-bromo-2-nitro- propanediol - 1,3 (bronopol) in order to expand the derivatives of bronopol as food products, preservatives, in all sectors of the national economy. The derivatives of dipropargyl diester 2 - bromo -, 2 - nitro - propanediol - 1,3, γ,γ ́-dicopper (2-bromo-,2-nitro-dipropargyl diester) propanediol-1,3 (II), γ,γ ́-bis- (silver 2-bromo-, 2-nitro-dipropargyl ether) - propanediol-1,3 (III), mercury-bis- (propargyl ether) - 2 - bromo-, 2- nitro-propanediol - 1, 3 (IV), (γ,γ ́-dibromo-dipropargyl diester)

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9

Fikroh, Retno Aliyatul, Sabirin Matsjeh, and Chairil Anwar. "Synthesis and Anticancer Activity of 2’-hydroxy-2-bromo-4,5-dimetoxychalcone Against Breast Cancer (MCF-7) Cell Line." Molekul 15, no. 1 (2020): 34. http://dx.doi.org/10.20884/1.jm.2020.15.1.558.

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Breast cancer is one of cancer causes of death in woman. Chemotherapy is one cancer treatment give toxic effects on normal cells. Alternative of cancer treatment by using flavonoid derivative have potent anticancer to reduce side effects of cancer. Chalcone is family of flavonoid that have biological activity. Chalcone derivatives have potential compound as anticancer agent. Chalcone with the presence halogen, metoxy group in ring B is know to inhibit cancer cells. The aims of this research were to synthesize chalcone derivate with bromo, methoxy, and hyroxy group in ring chalcone and to deter

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10

Ziemniak, Marcin, Sylwia Pawlędzio, Anna Zawadzka-Kaźmierczuk, et al. "X-ray wavefunction refinement and comprehensive structural studies on bromo-substituted analogues of 2-deoxy-d-glucose in solid state and solution." RSC Advances 12, no. 14 (2022): 8345–60. http://dx.doi.org/10.1039/d1ra08312k.

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11

Girges, Margret Mansour, Mokhtar Ayad Hanna, Hussien Mohamed Hassan, and Evelin Boshra Moawad. "Synthesis of some new 3-substituted-4-hydroxy-1-methyl-quinolin-2-one derivatives as potential antibacterial and antifungal agents." Collection of Czechoslovak Chemical Communications 53, no. 12 (1988): 3179–83. http://dx.doi.org/10.1135/cccc19883179.

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3-Acetyl-4-hydroxy-1-methylquinolin-2-one (I) and its bromo derivative II were allowed to react with different reagents to get new quinoline derivatives that have different heterocyclic moieties at position 3. The antibacterial and antifungal activities of the products were also evaluated.

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12

Rudyanto, Marcellino, and Lanny Hartanti. "SYNTHESIS OF SOME CINNAMIC ACID DERIVATIVES: EFFECT OF GROUPS ATTACHED ON AROMATIC RING TO THE REACTIVITY OF BENZALDEHYDE." Indonesian Journal of Chemistry 8, no. 2 (2010): 226–30. http://dx.doi.org/10.22146/ijc.21626.

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Synthesis of cinnamic acid and its six derivatives has been done by employing Knoevenagel reaction. Benzaldehyde, 4-butylbenzaldehyde, 4-t-butylbenzaldehyde, 4-butoxybenzaldehyde, 4-phenylbenzaldehyde, 5-bromo-2,4-dimethoxybenzaldehyde, and 5-bromo-2,3-dimethoxybenzaldehyde were reacted with malonic acid in pyridine – piperidine to give cinnamic acid (85,3%), 4-butylcinnamic acid (69,3%), 4-t-butylcinnamic acid (77,7%), 4-butoxycinnamic acid (64,5%), 4-phenylcinnamic acid (65,5%), 5-bromo-2,4-dimethoxycinnamic acid (53,2%) and 5-bromo-2,4-dimethoxycinnamic acid (57,2%), respectively. It was di

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13

Easton, CJ, та SC Peters. "Reactions of α-Substituted Glycine Derivatives With Stannanes in the Presence of Disulfides". Australian Journal of Chemistry 47, № 5 (1994): 859. http://dx.doi.org/10.1071/ch9940859.

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Reactions of α- bromo -, α- benzoyloxy - and α- methoxy -substituted glycine derivatives with stannanes afforded the corresponding α- centred glycinyl radical, which reacted with di -t-butyl disulfide and diphenyl disulfide by homolytic substitution to give the corresponding α-t- butylthio- and α-phenylthio -substituted glycine derivatives, respectively. The glycinyl radical reacted with dibenzyl disulfide by displacement of benzyl radical to give a mixed disulfide, which was subsequently reduced to the corresponding α- benzylthio-substituted glycine derivative. In related reactions of a cysti

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14

Den Hertog, H. J., F. R. Schepman, J. de Bruyn, and G. J. E. Thysse. "Bromo-derivatives of 3-hydroxypyridine." Recueil des Travaux Chimiques des Pays-Bas 69, no. 10 (2010): 1281–88. http://dx.doi.org/10.1002/recl.19500691011.

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15

Farat, Oleg, Svetlana Varenichenko, Victor Markov, and Karolina Yanova. "IN SILICO PREDICTION OF BIOLOGICAL ACTIVITY OF BROMO DERIVATIVES OF HYDROACRIDINES." Ukrainian Chemistry Journal 89, no. 6 (2023): 97–110. http://dx.doi.org/10.33609/2708-129x.89.06.2023.97-110.

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The aim of the work was to establish the spectrum of biological activity of new derivatives of 9-bromo-1,2,3,4-tetrahydroacridine due to the limited amount of literature data. In silico prediction of selected bromo-derivatives of hydrogenated acridines was performed using the SuperPred 3.0 web resource. The obtained results were compared with the results of prediction of active drugs that contain the acridine cycle in their structure - Tacrine, Amiridine and Amsacrine. Results ≤80% were taken into account. The most promising compound was 9-bromo-1,2,3,4-tetrahydroacridine. A common predict

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16

Zhang, Guang Hua, Li Juan Liu, and Wei Ling Sun. "Preparation and Properties of 1,8-Naphthalimide Derivatives Grafted onto Chitosan." Advanced Materials Research 393-395 (November 2011): 1359–62. http://dx.doi.org/10.4028/www.scientific.net/amr.393-395.1359.

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A kind of 1,8-naphthalimide derivative grafted onto Chitosan was synthesized with Chitosan, 4-bromo-N-(2-aminoethyl)-1,8-naphthalimide and 4-bromo-1,8- naphthalic anhydride via substitution and amidation. The structures of compounds was characterized by FT-IR．Thermal stability and fluorescence spectra of the target product were investigated. Compared with 4-bromo-N-(2-aminoethyl)-1,8-naphthalimide, the maximum fluorescent intensity of the 1,8-naphthalimide derivative grafted onto Chitosan was increased 1.25 folds.

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17

Kotha, Sambasivarao, and Subba Rao Cheekatla. "Synthesis of Bisoxazole and Bromo-substituted Aryloxazoles." Molbank 2022, no. 3 (2022): M1440. http://dx.doi.org/10.3390/m1440.

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Herein, we report a bisoxazole derivative as well as a bromo-substituted oxazole derivatives via a simple approach. The synthesis begins with an inexpensive and readily available starting material, such as 2,5-dimethoxybenzaldehyde, hydroquinone, and p-toluenesulfonylmethyl isocyanide (TosMIC). This approach relies on the Van Leusen oxazole method and electrophilic aromatic bromination. The structures of bisoxazole and bromosubstituted aryloxazoles were fully supported by spectroscopic methods (IR, NMR, and HRMS) and further established using single crystal X-ray diffraction studies.

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18

Arnold, Dennis P., Raymond C. Bott, Helen Eldridge, Fiona M. Elms, Graham Smith, and Mike Zojaji. "Functionalization of 5,15-Diphenylporphyrin: Preparation and X-Ray Crystal Structures of meso Nitro, Bromo, and Trimethylsilylethynyl Derivatives." Australian Journal of Chemistry 50, no. 5 (1997): 495. http://dx.doi.org/10.1071/c96193.

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Substitutions on 5,15-diphenylporphyrin led to the isolation of mono- and di-bromo and mono- and di-nitro derivatives, which were converted into their respective nickel(II) complexes. Reaction of the bromoporphyrins with iodine/silver nitrite resulted in nitrodebromination as well as conventional nitration. The nickel(II) complex of 5-nitro-10,20-diphenylporphyrin was reduced to the 5-amino derivative. The nickel(II) complexes of the bromoporphyrins were converted into the respective mono- and bis-(trimethylsilylethynyl) species. The crystal structures of 5-nitro-10,20-diphenylporphyrin, 5-bro

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19

Al-Syari, Abdulkarim H., and Saieba S. Hassan. "Synthesis and Spectroscopic Study of Some New 1,2,4-Triazino[5,6-b]indole Derivatives." Thamar University Journal of Natural & Applied Sciences 2, no. 2 (2023): 57–68. http://dx.doi.org/10.59167/tujnas.v2i2.1274.

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The Scheme of this work included the synthesis and characterization of new two series of 1,2,4-triazino[5,6-b] indole and 8-bromo-1,2,4-triazino[5,6-b] indole derivatives according to the starting material used. Both, derivatives of 3-thione-1,2,4-triazino[5,6-b] indole and 8-bromo-3-thione-1,2,4-triazino[5,6-b] indole (3a & 3b) were prepared by using Isatin and 5-bromo isatin as a starting material, the new schiff`s bases (5a & 5b) were synthesized by the reaction of hydrazino indole derivatives (4a & 4b) with aromatic aldehydes. Tetracyclic derivatives (7a & 7b) were prepared

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20

Ashry, El Sayed H. El, Hamida Abdel Hamid, Ahmed Mousaad, and El Sayed Ramadan. "Regioisomeric Formation of the Linear 1,2,4-Triazolo[4′,3′: 2,3][1,2,4]Triazino[5,6-b]Indole from 3-Hydrazino-1,2,4-Triazino[5,6-b]Indole Derivatives." Journal of Chemical Research 2002, no. 7 (2002): 314–16. http://dx.doi.org/10.3184/030823402103172284.

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Oxidative cyclisation of the ethylidene derivatives of 5-allyl-3-hydrazino-1,2,4-triazino[5,6-b]indole (7) and 8-bromo-3-hydrazino-5H-1,2,4-triazino[5,6-b]indole (8) gave regioselectively the linear isomers, 10-allyl-3-methyl-1,2,4-triazolo[4′,3′:2,3][1,2,4]triazino[5,6-b]indole (15) and 7-bromo-3-methyl-10H-1,2,4-triazolo[4′,3′:2,3][1,2,4]triazino-[5,6-b]indole (16), respectively. They were also obtained by the dehydrative cyclisation of 5 and 6 respectively with acetic acid as well as by the condensation of the N-allyl- (22) or 5-bromo-isatin (23) with 3,4-diamino-5-methyl-4H-1,2,4-triazole

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21

Chand, P. B., and R. Manohar. "Synthesis, Characterization and Unusual Dielectric Behaviour of λ-Shaped Mesogenic Homologous Series With Polar Substituents." Himalayan Physics 2 (July 31, 2011): 16–25. http://dx.doi.org/10.3126/hj.v2i2.5204.

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A new λ-shaped mesogenic homologous series with polar bromo and nitro substituent was synthesized by fixing rigid 2-bromo-4-nitrophenylazo groups to a resorcinol moiety. 4-n-alkoxybenzoyl groups esterify both the phenolic -OH groups. In the present series, methoxy and ethoxy derivatives are non-mesogenic, n-propyloxy to n-octyloxy derivatives exhibit enantiotropic nematic mesophase. Smectic C (SmC) mesophase commences from the n- octyloxy derivative as an enantiotropic phase and is retained up to the last member synthesized. The effect of polar bromo and nitro substituent on mesomorphic proper

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22

Jovanovic-Santa, Suzana, Vjera Pejanovic, and Julijana Petrovic. "A novel route to 3-hydroxy-16,17-seco-estrone derivatives." Journal of the Serbian Chemical Society 64, no. 5-6 (1999): 391–94. http://dx.doi.org/10.2298/jsc9906391j.

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Starting from 3-benzyloxy-17-hydroxy-16,17-secoestra-1,3,5(10)-triene-16-nitrile (1b), 17-tosylate 2b and also 17-chloro-, 17-bromo- and 17-iodo-derivatives 4b, 5b, and 6b, were obtained. The fluoro-derivative 3b was obtained from2b in the reaction with tetrabutyl ammonium fluoride. The deprotection of the 3-hydroxyl group was achieved by action of hydrogen in presence of Pd/C as a catalyst, yielding six new 3-hydroxy-16,17-seco-estrone derivatives.

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23

Jiang, Yu, Wen Guang Wang, Rui Cheng, Teng Zhou Yang, and Jia Ling Pu. "Synthesis of C₂-Symmetrically Functionalized Dibromo- Hexa-peri-hexabenzocoronene." Advanced Materials Research 554-556 (July 2012): 747–50. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.747.

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A novel dibromo-substituted HBC derivative, whose side chains contains oxygen heteroatoms, has been successfully synthesized by Diels-Alder reaction of asymmetric synthesis. It possesses bromo-functional groups to provide possibility to further synthesize more complex HBC derivatives. The final compound’s structure has been confirmed by1HNMR,13CNMR and MALDI-TOF mass spectrometry.

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24

Al-Abboodi1, Doaa Hashim, and Naeemah Al-lami. "NEW METHDOLOGY OF SYNTHESIS PYRAZOLO- THIAZOLO DERIVATIVES WITH STUDY ANTIMICROBAL ACTIVITIES." iraqi journal of market research and consumer protection 16, no. 1 (2024): 1–12. http://dx.doi.org/10.28936/jmracpc16.1.2024.(1).

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In this contribution, new derivatives of thiosemicarbazon, cyclic thiazolidinone, yilidine thiazolidinone, and parazolo-thiazole were synthesized, starting from the reaction of 2 -aminobenzothiazole with p-bromo phenacyl bromide to give the first step of 2(4-bromo phenyl) imidazole (2,1 -b) benzo thiazole (1). Compound (1) then was subjected under Viels Myer Haack to yield 3-carbaldehyde linking with imidazo-benzothiazol (2). Compound (2) condensed with thiosemicarbazide togivenewsynthesis of thiosemicarbazon derivative (3). Compound 4-Oxo-1,3-thiazolidine (4) was constituted from reacting com

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25

Ienascu, Ioana Maria Carmen, Diana Obistioiu, Iuliana Maria Popescu, et al. "In Vitro Testing of Salicylanilide Derivatives Against Some Fungal and Bacterial Strains." Revista de Chimie 70, no. 4 (2019): 1496–99. http://dx.doi.org/10.37358/rc.19.4.7157.

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In the dental office, disinfection and sterilization are a matter of utmost importance for both the physician, the medical staff and the patient. Twelve N-(2-bromo-phenyl)-2-hydroxy-benzamide and N-(4-bromo-phenyl)-2-hydroxy-benzamide derivatives were synthesized and tested for antimicrobial activity against 6 bacterial and 2 fungal strains using the Disk diffusion method for susceptibility testing. The obtained results indicated that the N-(2-bromo-phenyl)-2-hydroxy-benzamide derivatives were more active against the tested microbes, inhibition zones of 6-12 mm being obtained, although the mos

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26

Hishmat, O. H., Kh M. A. Khalil, Sh I. El-Naem, and A. H. Abd el-Rahman. "Synthesis of Pyranobenzopyranopyridines and Benzodipyran Derivatives." Zeitschrift für Naturforschung B 41, no. 2 (1986): 252–58. http://dx.doi.org/10.1515/znb-1986-0217.

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6-Formyl-7-hydroxy-5-methoxy-2-methylchromone on bromination yields the 8-bromo derivative or the 8-bromo-6-formyl-5,7-dihydroxy derivative depending on the reaction condition. Cyclization of both leads to the corresponding 3-acetyl-, 3-benzoyl-, 3-carboxamido-, 3-carbethoxybenzodipyran derivatives.The 3-acetylbenzodipyran derivative when treated with ethyl acetoacetate or ethyl cyanoacetate in the presence of ammonium acetate yields the corresponding dihydropyranobenzopyranopyridine dione or the dihydropyranobenzopyranopyridine trione.The reaction of the 3-acetyl derivative with cyanoacetamid

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27

Tasleem*, P. Shyam Sundar R. Vasanthi. "SYNTHESIS OF NOVEL (R)-5-BROMO-3-(N-METHYLPYRROLIDINE-2-YL-METHYL)-1H (SUBSTITUTED)-INDOLE DERIVATIVES AS POTENTIAL COX-2 INHIBITORS VIA JAPP-KLINGEMANN AND FISCHER INDOLE CYCLIZATION REACTIONS." Indo American Journal of Pharmaceutical Sciences 05, no. 01 (2018): 103–10. https://doi.org/10.5281/zenodo.1136257.

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A series of novel (R)-5-bromo-3-(N-methylpyrrolidine-2-yl-methyl)-1H (substituted)-indole (T1-T5) derivates were synthesized by electrophilic substitution at 1st position of (R)-5-bromo-3-(N-methylpyrrolidine-2-yl-methyl)-1Hindole with various halides. The starting material (R)-5-bromo-3-(N-methylpyrrolidine-2-yl-methyl)-1H-indole was synthesized from 4-bromo aniline by multistep synthesis. The synthesized compounds were characterized by IR, 1H NMR and MASS spectroscopy and newly synthesized compounds were evaluated for their analgesic activity by tail immersion technique using wistar albino m

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28

Talybov, G. М. "Synthesis and intramolecular cyclization of propargyl ethers derived from 1-bromo(iodo)-3-organyloxy-2-propanol." Voprosy Khimii i Khimicheskoi Tekhnologii, no. 1 (February 2025): 80–85. https://doi.org/10.32434/0321-4095-2025-158-1-80-85.

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The interaction of bromine (iodine)-releasing reagents, such as N-bromosuccinimide (NBS) or a mixture of iodine and clinoptilolite ((NaK)4CaAl6Si30O72), with an equimolar mixture of 3-organyloxy-1-propene and propynol results in the formation of propargyl ethers of 1-bromo(iodo)-3-organyloxy-2-propanol. The outcome of the catalytic hydration reaction of these ethers depends on the halogen atom present. Bromo derivatives are converted into the expected keto-bromo ethers, whereas iodo derivatives undergo simultaneous hydrolysis of the C–I bond and intermolecular ketalization, forming hydroxy der

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29

Ienascu, Ioana Maria Carmen, Tiberius Balaes, Cristiana Virginia Petre, et al. "Novel N-(2-bromo-phenyl)-2-hydroxy-benzamide Derivatives with Antifugal Activity." Revista de Chimie 69, no. 7 (2018): 1876–80. http://dx.doi.org/10.37358/rc.18.7.6435.

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In order to increase the biological activity, some novel molecules, esters, hydrazides, hydrazones of N-(2-bromo-phenyl)-2-hydroxy-benzamide, were obtained in good yields (86-93%), working at 150 �C, 500 W, 7-11 min, under microwave irradiation. All synthesized compounds were characterized using modern physico-chemical methods (FTIR, 1H-NMR, 13C-NMR and elemental analysis). Eight dilutions in dimethyl sulfoxide of these derivatives were tested against two phyto-pathogenic fungi, Fusarium oxysporum, Sclerotinia sclerotiorum and one common yeast, Saccharomyces cerevisiae. The antifungal activity

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30

Dong, Hui, Li Wang, Meng Guo, et al. "Antioxidant and Anticancer Activities of Synthesized Methylated and Acetylated Derivatives of Natural Bromophenols." Antioxidants 11, no. 4 (2022): 786. http://dx.doi.org/10.3390/antiox11040786.

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Natural bromophenols are important secondary metabolites in marine algae. Derivatives of these bromophenol are potential candidates for the drug development due to their biological activities, such as antioxidant, anticancer, anti-diabetic and anti-inflammatory activity. In our present study, we have designed and synthesized a series of new methylated and acetylated bromophenol derivatives from easily available materials using simple operation procedures and evaluated their antioxidant and anticancer activities on the cellular level. The results showed that 2.,3-dibromo-1-(((2-bromo-4,5-dimeth

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31

Rijal, Chairul, Winarto Haryadi, and Chairil Anwar. "Synthesis of Chalcone Derivatives from Halogenated Vanillin and their Activity Test as Antioxidant." Materials Science Forum 1061 (May 26, 2022): 59–65. http://dx.doi.org/10.4028/p-5k5d4j.

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Synthesis of 3-chloro-4-hydroxy-5-methoxybenzaldehyde, 3-bromo-4-hydroxy-5-methoxybenzaldehyde and 2',4'-dihydroxy-3-bromo-4-hydroxy-5-methoxyhalcone and evaluation of their antioxidant activity have been carried out. 3-Chloro-4-hydroxy-5-methoxybenzaldehyde was obtained through chlorination of vanillin using Ca(ClO)2, while 3-bromo-4-hydroxy-5-methoxybenzaldehyde was obtained via bromination of vanillin using KBrO3 in glacial acetic acid solvent and 47% HBr catalyst. Then, 2',4'-dihydroxy-3-bromo-4-hydroxy-5-methoxychalcone was prepared from 3-bromo-4-hydroxy-5-methoxybenzaldehyde and 2-4-dih

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32

Pert, DJ, and DD Ridley. "An Alternative Route to 2-Bromo-Estradiols and 2-Iodo-Estradiols From Estradiol." Australian Journal of Chemistry 40, no. 2 (1987): 303. http://dx.doi.org/10.1071/ch9870303.

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Through careful choice of reaction conditions, alkylation of estradiol with chloromethyl methyl ether may yield either the 3,17β-bis(methoxymethy1) ether or the 3-methoxymethyl ether derivative. Treatment of either of these protected estradiols with s- butyllithium, then with trimethylsilyl chloride affords, regioselectively, the 2-trimethylsilyl derivatives which can conveniently be converted into 2-bromo-or 2-iodo-estradiol.

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33

Mayer, Guido, Claudia Hinze, Kurt Polborn, and Wolfgang Steglich. "Unexpected Formation of the Arcyriacyanin System by Condensation of a 3-Bromo-4-(indol-3-yl)maleimide with (2-Nitrophenyl)acetates." Australian Journal of Chemistry 57, no. 7 (2004): 625. http://dx.doi.org/10.1071/ch04043.

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The reaction of an N-protected 3-bromo-4-(indol-3-yl)maleimide with methyl (2-nitrophenyl)acetates in the presence of base affords condensed cycloheptatriene derivatives which can be transformed into arcyriacyanin-type alkaloids. The unusual reaction sequence implies a heptatrienyl–cycloheptadienyl anion rearrangement followed by a 1,5-sigmatropic shift to yield the thermodynamically more stable cycloheptatriene derivative.

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34

Kovtun, A. V., S. A. Varenichenko, E. V. Zaliznaya, A. V. Mazepa, O. K. Farat, and V. I. Markov. "Rearrangement of spiroderivatives of 1,3-benzo(naphtho)dioxin-4(1)-ones as a new method of synthesis of xanthene bromo derivatives." Voprosy Khimii i Khimicheskoi Tekhnologii, no. 4 (July 2021): 73–77. http://dx.doi.org/10.32434/0321-4095-2021-137-4-73-77.

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We have proposed a method for the synthesis of previously unknown bromo xanthenes using the reagent PBr3/DMF as a rearrangement initiator. Bromo derivatives of xanthenes in the form of organic perchlorates were prepared by reacting the corresponding benzo(naphtho)dioxin-4(1)-ones with a three-fold excess of Vilsmeier-Haack PBr3/DMF reagent at 1100C for 2 hours, followed by the addition of sodium perchlorate. The conditions for the synthesis of formyl derivatives of xanthenes under conditions of acid hydrolysis were selected. The structure of the compounds was confirmed by 1H and 13C NMR spectr

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35

Usachev, Sergey A., Diana I. Nigamatova, Daria K. Mysik, Nikita A. Naumov, Dmitrii L. Obydennov, and Vyacheslav Y. Sosnovskikh. "2-Aryl-6-Polyfluoroalkyl-4-Pyrones as Promising RF-Building-Blocks: Synthesis and Application for Construction of Fluorinated Azaheterocycles." Molecules 26, no. 15 (2021): 4415. http://dx.doi.org/10.3390/molecules26154415.

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A convenient and general method for the direct synthesis of 2-aryl-6-(trifluoromethyl)-4-pyrones and 2-aryl-5-bromo-6-(trifluoromethyl)-4-pyrones has been developed on the basis of one-pot oxidative cyclization of (E)-6-aryl-1,1,1-trifluorohex-5-ene-2,4-diones via a bromination/dehydrobromination approach. This strategy was also applied for the preparation of 2-phenyl-6-polyfluoroalkyl-4-pyrones and their 5-bromo derivatives. Conditions of chemoselective enediones bromination were found and the key intermediates of the cyclization of bromo-derivatives to 4-pyrones were characterized. Synthetic

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36

Wrackmeyer, Bernd, and Alexandra Glöckle. "Synthesis of Pentaalkyl-6-bromo-2,3,4,5-tetracarba-nido-hexaboranes(6)." Zeitschrift für Naturforschung B 51, no. 6 (1996): 859–64. http://dx.doi.org/10.1515/znb-1996-0616.

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Abstract Peralkylated 2,3,4,5-tetracarba-mdo-hexaboranes(6) 1 react with boron tribromide, BBr3, via selective exchange of the alkyl substituent in 6-position to give the corresponding new 6- bromo derivatives 2 in quantitative yield. The 6-iodo derivatives 2(1) can be prepared in the same way using BI3. Treatment of the carbaboranes 2 with Li Et3BH leads to the 1,2,3,4,5- pentaalkyl-2,3,4,5-tetracarba-inido-hexaboranes(6) 3. 1,3,4,6-Tetraethyl-2,3,4,5-tetracarbaw do-hexaborane(6) 4 reacts with BBr3 via degradation of the carbaborane cage to give EtBBr2, and (Z)-1,4-bis [bis(dibromoboryl)]-3-h

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37

Šafář, Peter, František Považanec, Pavel Čepec, and Naďa Prónayová. "Preparation of Derivatives of 2-Cyano-3-(5-N-arylamino- or 5-N-Alkyl-N-phenylamino-2-furyl)propenoic Acids." Collection of Czechoslovak Chemical Communications 62, no. 7 (1997): 1105–13. http://dx.doi.org/10.1135/cccc19971105.

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(5-Bromo-2-furyl)methylidenemalonodinitrile (1) reacted with substituted aromatic amines under formation of (5-N-arylamino-2-furyl)methylidenemalonodinitriles 2a-2h whereas no reaction was observed with N-alkyl-N-phenylamines. Derivatives of 2-cyano-3-(5-N-alkyl-N-phenylamino-2-furyl)- propenoic acid 5a-5o were prepared by reaction of the corresponding N-alkylanilines with 5-bromo-2-furancarbaldehyde, followed by hydrolysis of the obtained Eiji salts and reaction with malonic acid derivatives.

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38

Krečmerová, Marcela, Hubert Hřebabecký, and Antonín Holý. "Synthesis of 5-Phenylcytosine Nucleoside Derivatives." Collection of Czechoslovak Chemical Communications 61, no. 4 (1996): 645–55. http://dx.doi.org/10.1135/cccc19960645.

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Reaction of silylated 5-phenylcytosine with 1-O-acetyl-2,3,5-tri-O-benzoyl-D-ribose, catalyzed with tin tetrachloride, and subsequent methanolysis afforded 5-phenylcytidine (2). This compound reacted with thionyl chloride in acetonitrile to give cyclic sulfite 3 which on heating in dimethylformamide was converted into 2,2'-anhydro-1-(β-D-arabinofuranosyl)-5-phenylcytosine (4). Analogous reaction of compound 2 with thionyl chloride at reflux gave 5'-chloro-5'-deoxy-2',3'-cyclic sulfite 5. Its heating in dimethylformamide afforded 5'-chloro-2,2'-anhydro derivative 6, mild alkaline hydrolysis led

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39

Malik, Enas M., Younis Baqi, and Christa E. Müller. "Syntheses of 2-substituted 1-amino-4-bromoanthraquinones (bromaminic acid analogues) – precursors for dyes and drugs." Beilstein Journal of Organic Chemistry 11 (November 26, 2015): 2326–33. http://dx.doi.org/10.3762/bjoc.11.253.

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Anthraquinone (AQ) derivatives play a prominent role in medicine and also in textile industry. Bromaminic acid (1-amino-4-bromoanthraquinone-2-sulfonic acid) is an important precursor for obtaining dyes as well as biologically active compounds through the replacement of the C4-bromo substituent with different (ar)alkylamino residues. Here we report methods for the synthesis of bromaminic acid analogues bearing different substituents at the 2-position of the anthraquinone core. 1-Aminoanthraquinone was converted to its 2-hydroxymethyl-substituted derivative which, under different reaction condi

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40

Navarrete Guitérrez, Angélica, Gerardo Aguirre Hernández, and Sylvain Bernès. "Crystal structures ofp-substituted derivatives of 2,6-dimethylbromobenzene with ½ ≤Z′ ≤ 4." Acta Crystallographica Section E Crystallographic Communications 72, no. 12 (2016): 1762–67. http://dx.doi.org/10.1107/s2056989016017485.

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The crystal structures of four bromoarenes based on 2,6-dimethylbromobenzene are reported, which are differentiated according the functional groupXplacedparato the Br atom:X= CN (4-bromo-3,5-dimethylbenzonitrile, C9H8BrN), (1),X= NO2(2-bromo-1,3-dimethyl-5-nitrobenzene, C8H8BrNO2), (2),X= NH2(4-bromo-3,5-dimethylaniline, C8H10BrN), (3) andX= OH (4-bromo-3,5-dimethylphenol, C8H9BrO), (4). The content of the asymmetric unit is different in each crystal,Z′ = ½ (X= CN),Z′ = 1 (X= NO2),Z′ = 2 (X= NH2), andZ′ = 4 (X= OH), and is related to the molecular symmetry and the propensity ofXto be involved

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41

Badran, TW, and CJ Easton. "Monosubstitution of Symmetrical Piperazine-2,5-dione Derivatives." Australian Journal of Chemistry 43, no. 8 (1990): 1455. http://dx.doi.org/10.1071/ch9901455.

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42

van Roosmalen, F. L. W. "Chloro-and bromo-derivatives of diphenyl." Recueil des Travaux Chimiques des Pays-Bas 53, no. 4 (2010): 359–79. http://dx.doi.org/10.1002/recl.19340530407.

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43

Yadav, Yadav, Manisha Negi, Ranjit Singh, and ,. Sanjay Singh. "Design, Synthesis and Characterization Of Benzofuran Derivatives For Anti-Bacterial Activity – A Research Article." Cuestiones de Fisioterapia 54, no. 1 (2025): 645–56. https://doi.org/10.48047/2jxp1j63.

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Many compounds are produced by different modifications of the benzofuran moiety, and each of those molecules exhibits a wide range of biological activity. New benzofuran derivatives (M5a-M5t) were produced using various reagents and techniques. The benzofuran derivatives (M5a-M5t) were made by combining 7-chlorobenzofuran-3-yl hydrazine and 5-nitrobenzofuran-3-yl)hydrazine with various benzaldehydes, such as 2-chloro, 4-Chloro, 4-Nitro, 2-Nitro, 4-Fluoro, 3-Methoxy, 4-bromo, 3-Bromo, 3-Chloro and 3-Nitrobenzaldehyde were used.

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44

Rees, Martin D., Tane N. McNiven, and Michael J. Davies. "Degradation of extracellular matrix and its components by hypobromous acid." Biochemical Journal 401, no. 2 (2006): 587–96. http://dx.doi.org/10.1042/bj20061236.

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EPO (eosinophil peroxidase) and MPO (myeloperoxidase) are highly basic haem enzymes that can catalyse the production of HOBr (hypobromous acid). They are released extracellularly by activated leucocytes and their binding to the polyanionic glycosa-minoglycan components of extracellular matrix (proteoglycans and hyaluronan) may localize the production of HOBr to these materials. It is shown in the present paper that the reaction of HOBr with glycosaminoglycans (heparan sulfate, heparin, chondroitin sulfate and hyaluronan) generates polymer-derived N-bromo derivatives (bromamines, dibromamines,

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45

Neamah, Rawaa, та Shaimaa Adnan. "Study the Biological Activity for Shiff Base and Β – Lactam Compounds that Synthesis and Identification from Pyrimidine Derivatives". International Journal of Pharmaceutical Quality Assurance 11, № 01 (2013): 37–39. http://dx.doi.org/10.25258/ijpqa.11.1.12.

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In This study We are synthesis and characterization of some Schiff base and β- lactam derivatives) by three steps. The First react 2-amino-4-Chloro-6-methyl pyrimidine with 4-amino acetophenone in an acid medium to get shiff base derivative(E)-4-(1-((4-Chloro-6-methyl pyridine-2-yl)imino)ethyl)aniline (1), the second step (1) react with (3,4- dimethoxybenzal dehyde,4-methyl benzaldehyde,4-dimethylamino benzaldehyde,4-bromo benzaldehyde,4–hydroxy benzaldehyde, 4-Nitro benzaldehyde) to get Schiff base derivatives (2-7), the last step (2-7) derivatives react with Chloro acetyl chloride to get –β-

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46

Skoryi, M. P., and R. O. Shcherbyna. "QSAR prediction of toxicity for a new 1,2,4-triazole derivatives with 2-bromo-5-methoxyphenyl fragment." Current issues in pharmacy and medicine: science and practice 17, no. 3 (2024): 226–30. http://dx.doi.org/10.14739/2409-2932.2024.3.312041.

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New derivatives of 1,2,4-triazole are promising research targets due to their unique biological properties, including antimicrobial, antifungal, antitumor, and antioxidant activities. The introduction of the 2-bromo-5-methoxyphenyl fragment into the triazole structure potentially enhances these properties. However, the issue of toxicity for such compounds remains a critical factor for their further application. To reduce experimental costs and time, QSAR (Quantitative Structure-Activity Relationship) methods are widely applied, allowing to predict compounds toxicity based on their molecular st

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47

Zander, S., and W. Preetz. "Darstellung, 11B-, 13C-NMR- und Schwingungsspektren von Cs2[B6H5(p-C6H4(NO2))] und Cs2[B6H5(C6H3-l-(CH3)-5-(NO2))] sowie Kristallstruktur von (CH2Py2)[B6Cl5(p-C6H4(NO2))]·CH3CN / Preparation, 11B , 13C-NMR and Vibrational Spectra of Cs2[B6H5(p-C6H4(NO2))], Cs2[B6H5 (C6H3-1 -(CH3 )-5-(NO2))] and Crystal Structure of (CH2Py2)[B6Cl5(p-C6H4(NO2))]·CH3CN." Zeitschrift für Naturforschung B 55, no. 11 (2000): 1031–36. http://dx.doi.org/10.1515/znb-2000-1108.

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The first aryl derivatives of c/oso-hexahydrohexaborate are formed by reaction of [B6H6]2- with 1-bromo-4-nitrobenzene and 2-bromo-5-nitrotoluene in acetonitrile at 80 °C. Cs2[B6H5- (1,4-C6H4(NO2))] and Cs2[B6H5(C6H3-1-(CH3)-5-(NO2))] can be isolated by ion exchange chromatography on diethylaminoethyl (DEAE) cellulose. Further treatment with /V-chlorosuccinimide yields the perhalogenated derivative (CH2Py2)[B6Cl5(1,4-Ph(NO2))]CH3CN which has been characterized by X-ray diffraction analysis (orthorhombic, space group P2( 2,2t, a = 9.810(4), b - 14.412(3), c - 18.586(9) A, Z = 4). The 11B NMR sp

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48

Dobre, Adela F., Augustin M. Madalan, and Petre Ionita. "The Crystal Structures of Some Bromo-Derivatives of the DPPH Stable Free Radical." Molbank 2024, no. 3 (2024): M1880. http://dx.doi.org/10.3390/m1880.

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Bromination of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical with bromine or N-bromo-succinimide (NBS) affords a complex mixture of bromo- and nitro-derivatives of the starting material. In this study, by chromatographic separation, most of the reaction products were isolated. Suitable crystals for X-ray measurements were obtained and characterized for the compounds 2-p-bromophenyl-2-phenyl-1-picrylhydrazyl free radical (Br-DPPH), 2-p-bromophenyl-2-phenyl-1-picrylhydrazine (Br-DPPH-H), and 2,2-(p-bromophenyl)-1-(2-bromo-4,6-dinitrophenyl)hydrazine (Br2-DPPBr-H).

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Pacchiana, Raffaella, Nidula Mullappilly, Andrea Pinto, et al. "3-Bromo-Isoxazoline Derivatives Inhibit GAPDH Enzyme in PDAC Cells Triggering Autophagy and Apoptotic Cell Death." Cancers 14, no. 13 (2022): 3153. http://dx.doi.org/10.3390/cancers14133153.

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A growing interest in the study of aerobic glycolysis as a key pathway for cancer-cell energetic metabolism, favouring tumour progression and invasion, has led to consider GAPDH as an effective drug target to specifically hit cancer cells. In this study, we have investigated a panel of 3-bromo-isoxazoline derivatives based on previously identified inhibitors of Plasmodium falciparum GAPDH (PfGAPDH). The compounds are active, to a different extent, as inhibitors of human-recombinant GAPDH. They showed an antiproliferative effect on pancreatic ductal-adenocarcinoma cells (PDAC) and pancreatic-ca

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50

Campos, Pierre-Eric, Emmanuel Pichon, Céline Moriou, et al. "New Antimalarial and Antimicrobial Tryptamine Derivatives from the Marine Sponge Fascaplysinopsis reticulata." Marine Drugs 17, no. 3 (2019): 167. http://dx.doi.org/10.3390/md17030167.

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Chemical study of the CH2Cl2-MeOH (1:1) extract of the sponge Fascaplysinopsis reticulata collected in Mayotte highlighted three new tryptophan derived alkaloids, 6,6′-bis-(debromo)-gelliusine F (1), 6-bromo-8,1′-dihydro-isoplysin A (2) and 5,6-dibromo-8,1′-dihydro-isoplysin A (3), along with the synthetically known 8-oxo-tryptamine (4) and the three known molecules from the same family, tryptamine (5), (E)-6-bromo-2′-demethyl-3′-N-methylaplysinopsin (6) and (Z)-6-bromo-2′-demethyl-3′-N-methylaplysinopsin (7). Their structures were elucidated by 1D and 2D NMR spectra and HRESIMS data. All comp

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