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Journal articles on the topic 'Organic bromo compounds'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Saikia, Indranirekha, Arun Jyoti Borah, and Prodeep Phukan. "Use of Bromine and Bromo-Organic Compounds in Organic Synthesis." Chemical Reviews 116, no. 12 (2016): 6837–7042. http://dx.doi.org/10.1021/acs.chemrev.5b00400.

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2

Gładkowski, Witold, Aleksandra Włoch, Aleksandra Pawlak та ін. "Preparation of Enantiomeric β-(2′,5′-Dimethylphenyl)Bromolactones, Their Antiproliferative Activity and Effect on Biological Membranes". Molecules 23, № 11 (2018): 3035. http://dx.doi.org/10.3390/molecules23113035.

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Three novel enantiomeric pairs of bromolactones possesing a 2,5-dimethylphenyl substituent at the β-position of the lactone ring have been synthesized from corresponding enantiomeric (E)-3-(2′,5′-dimethylphenyl)hex-4-enoic acids (4) by kinetically controlled bromolactonization with N-bromosuccinimide (NBS). γ-Bromo-δ-lactones (5) were isolated as the major products. Absolute configurations of stereogenic centers of γ-bromo-δ-lactones (5) were assigned based on X-ray analysis; configurations of cis δ-bromo-γ-lactones (6) and trans δ-bromo-γ-lactones (7) were determined based on mechanism of bro

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3

Cristol, Stanley J., George C. Schloemer, Dieter Braun, and Gwendolyn O. Mayo. "Bridged polycyclic compounds. 88. Multiple intermediates in solvolysis of certain bridged bicyclic and tricyclic compounds." Canadian Journal of Chemistry 64, no. 6 (1986): 1077–80. http://dx.doi.org/10.1139/v86-180.

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Acetolyses of 7-chloromethyl- and 7-bromomethyldibenzobicyclo[2.2.2]octatrienes, 8-chloro- and 8-bromo-7-methylenedibenzobicyclo[2.2.2]octa-2,5-dienes, 4-bromo-8-methylenedibenzobicyclo[3.2.1]octa-2,6-diene, and 2-chlorodibenzotricyclo[3.2.2.02,4]nonadiene were carried out. The results observed were consistent with the involvement of two carbocations interconverting by a Wagner–Meerwein rearrangement, and with the absence of the 1-dibenzosemibullvalenylcarbinyl cation, which is the cyclopropylcarbinyl isomer of one of the cations produced. The preparations of the reactants and products are des

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4

Moriyama, Katsuhiko, Chihiro Nishinohara, Toru Sugiue, and Hideo Togo. "Oxidative oxygen-nucleophilic bromo-cyclization of alkenyl carbonyl compounds without organic wastes using alkali metal reagents in green solvent." RSC Advances 5, no. 104 (2015): 85872–78. http://dx.doi.org/10.1039/c5ra19851h.

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A bromo-lactonization of alkenyl carboxylic acids and a bromo-cyclization ofN-allyl amides as oxygen-nucleophilic bromo-cyclization reactions were developedviathe oxidative umpolung of bromide using alkali metal bromide and inorganic oxidant.

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5

Nazeer, Usman, Nasir Rasool, Aqsa Mujahid, et al. "Selective Arylation of 2-Bromo-4-chlorophenyl-2-bromobutanoate via a Pd-Catalyzed Suzuki Cross-Coupling Reaction and Its Electronic and Non-Linear Optical (NLO) Properties via DFT Studies." Molecules 25, no. 15 (2020): 3521. http://dx.doi.org/10.3390/molecules25153521.

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In the present study, 2-bromo-4-chlorophenyl-2-bromobutanoate (3) was synthesized via the reaction of 2-bromo-4-chlorophenol with 2-bromobutanoyl bromide in the presence of pyridine. A variety of 2-bromo-4-chlorophenyl-2-bromobutanoate derivatives (5a–f) were synthesized with moderate to good yields via a Pd-catalyzed Suzuki cross-coupling reaction. To find out the reactivity and electronic properties of the compounds, Frontier molecular orbital analysis, non-linear optical properties, and molecular electrostatic potential studies were performed.

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6

Saikia, Indranirekha, Arun Jyoti Borah, and Prodeep Phukan. "Correction to Use of Bromine and Bromo-Organic Compounds in Organic Synthesis." Chemical Reviews 116, no. 14 (2016): 8312. http://dx.doi.org/10.1021/acs.chemrev.6b00410.

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7

Jamain, Zuhair, Nor Faizawani Omar, and Melati Khairuddean. "Synthesis and Determination of Thermotropic Liquid Crystalline Behavior of Cinnamaldehyde-Based Molecules with Two Schiff Base Linking Units." Molecules 25, no. 17 (2020): 3780. http://dx.doi.org/10.3390/molecules25173780.

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A series of liquid crystal molecules with two Schiff base linking units and a cinnamaldehyde core with different terminal groups were synthesized and characterized. The intermediates of 4-heptyloxybenzaldehyde (1a) and 4-dodeyloxybenzaldehyde (1b) were synthesized through the alkylation of 4-hydroxybenzaldehyde with a series of bromoalkane. A condensation reaction of cinnamaldehyde, 1,4-phenylenediamine and a series of substituted benzaldehydes with different terminal groups such as bromo, chloro, hydroxy, cinnamaldehyde, hydrogen, methoxy, heptyloxy and dodecyloxy produced a series of new cin

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8

Bushnell, Gordon W., Alfred Fischer, George N. Henderson, and Sumit Ray Mahasay. "ipso Nitration. XXVII. The crystal structure and stereochemistry of 3-bromo-6-methyl-6-nitrocyclohexa-2,4-dienyl acetate, 5-bromo-2-methyl-6-nitrocyclohexa-2,4-dienyl acetate, and 3-bromo-6-methyl-6-nitrocyclohexa-2,4-dienyl chloride." Canadian Journal of Chemistry 64, no. 12 (1986): 2382–87. http://dx.doi.org/10.1139/v86-394.

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The adduct obtained on nitration of 4-bromotoluene in acetic anhydride is (Z)-3-bromo-6-methyl-6-nitrocyclohexa-2,4-dienyl acetate. Its stereoselective rearrangement product, obtained on thermolysis in the presence of p-cresol, is (Z)-5-bromo-2-methyl-6-nitrocyclohexa-2,4-dienyl acetate. Reaction with hydrogen chloride in ether is also stereospecific and gives (Z)-3-bromo-6-methyl-6-nitrocyclohexa-2,4-dienyl chloride. The crystal structures of these compounds are reported.

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9

Ren, Hang, Haoyun An, and Jingchao Tao. "Investigation of 8-Aza-7-Deaza Purine Nucleoside Derivatives." Molecules 24, no. 5 (2019): 983. http://dx.doi.org/10.3390/molecules24050983.

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Glycosylation of 6-amino-4-methoxy-1H-pyrazolo[3,4-d]pyrimidine and its iodo- and bromo- analogues with the protected ribofuranose and 2′-deoxyribofuranose under different conditions resulted in the synthesis of N9- and N8-glycosylated purine nucleosides. Five key intermediate nucleosides, having 6-methoxy, 7-iodo, and 2-bromo groups, were further derivatized to 23 final 8-aza-7-deazapurine nucleoside derivatives. The structures of N9- and N8-glycosylated products were assigned based on UV and NMR spectra. HMBC analysis of 2D NMR spectra and X-ray crystallographic studies of the representative

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10

Sohail, Muhammad, Yixin Zhang, Wujun Liu, Qin Chen, Lei Wang та Zongbao K. Zhao. "Four-component α-bromo-β-phosphoalkoxylation of aromatic α,β-unsaturated carbonyl compounds". RSC Advances 5, № 22 (2015): 17014–17. http://dx.doi.org/10.1039/c4ra12417k.

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Novel α-bromo-β-phosphoalkoxylated carbonyl compounds were produced in moderate to excellent yields via highly selective four-component reaction involving NBS, a cyclic ether, an organic phosphate and an aromatic α,β-unsaturated carbonyl compound.

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11

Bray, Brian L., та Joseph M. Muchowski. "α-(Dialkylamino)-α-pyrrolylacetonitriles. A potpourri of useful synthetic transformations". Canadian Journal of Chemistry 68, № 8 (1990): 1305–8. http://dx.doi.org/10.1139/v90-201.

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α-(Dialkylamino)-α-(pyrrol-2-yl)acetonitriles (3) are versatile intermediates that are readily converted into regiochemically pure 2-bromo-6-dialkylamino-1-azafulvenes and 5-bromo-2-acylpyrroles (acyl = CHO, COR). In addition, 3 (R1 = H), 4 (R1 = H), and the β-substituted compound 9 are transformed easily and under mild conditions, via the corresponding α-methylthio compounds (e.g., 7a), into the methyl pyrrole carboxylates 8a, 8b, and 10, respectively. Keywords: α-(dialkylamino)-α-(pyrrol-2-yl)acetonitriles, 5-bromo-2-acylpyrroles, methyl pyrrole carboxylates.

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12

Narasimhan, S., S. Swamalakshmi, R. Balakumar, and S. Velmathi. "Tandem Reduction Studies of Bromo Compounds Using Tetrabutylammonium Borohydride." Synthetic Communications 29, no. 4 (1999): 685–89. http://dx.doi.org/10.1080/00397919908085817.

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13

Liu, Shenghui, Hailong He, Min Gan, Peng Yi та Xiaojian Jiang. "Catalytic Asymmetric Intramolecular Bromolactonization of α,β-Unsaturated Ketones". Synlett 30, № 12 (2019): 1474–78. http://dx.doi.org/10.1055/s-0037-1611860.

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Enantioselective bromolactonization by using an amino-urea catalyst to generate the important bromo-containing 3,4-dihydroisocoumarins is described. Excellent yields and good enantioselectivities could be achieved for various 3,4-dihydroisocoumarin compounds.

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14

Talukdar, Ranadeep. "Single-Step Dual Functionalization: One-Pot Bromination-Cross-Dehydrogenative Esterification of Hydroxy Benzaldehydes with CCl3Br – A Comparison with Selectfluor." Synlett 30, no. 14 (2019): 1713–18. http://dx.doi.org/10.1055/s-0037-1610717.

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Bromination of phenolic compounds without directly using molecular bromine possesses much importance. In this article an IrIII/CCl3Br-assisted single-step double functionalization of hydroxy benzaldehydes is reported. It involves simultaneous esterification of the aldehyde group and bromination of the aryl ring of phenolic aldehydes in one-pot. The reaction proceeds under mild conditions in the presence of 445 nm blue LED light to obtain highly functionalized bromo hydroxy benzoates in moderate to good yields. In comparison, Selectfluor as an oxidant gives only non-bromo phenolic esters.

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15

Jin, Fengyan, Tao Yang, Xian-Rong Song, et al. "TMSBr-Promoted Cascade Cyclization of ortho-Propynol Phenyl Azides for the Synthesis of 4-Bromo Quinolines and Its Applications." Molecules 24, no. 21 (2019): 3999. http://dx.doi.org/10.3390/molecules24213999.

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Difficult-to-access 4-bromo quinolines are constructed directly from easily prepared ortho-propynol phenyl azides using TMSBr as acid-promoter. The cascade transformation performs smoothly to generate desired products in moderate to excellent yields with good functional groups compatibility. Notably, TMSBr not only acted as an acid-promoter to initiate the reaction, and also as a nucleophile. In addition, 4-bromo quinolines as key intermediates could further undergo the coupling reactions or nucleophilic reactions to provide a variety of functionalized compounds with molecular diversity at C4

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16

Khakimullin, Yuri N., Larisa Yuryevna Zakirova, and Alfred D. Khusainov. "Determination of the Composition of Substances Migrating from Plugs Based on Bromo-Butyl Rubber into Infusion and Injection Preparations." Key Engineering Materials 869 (October 2020): 135–39. http://dx.doi.org/10.4028/www.scientific.net/kem.869.135.

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The results of experimental studies of the composition of individual substances migrating from medical rubber plugs produced both in and abroad based on technical bromobutyl rubber are presented. The quantitative content of volatile organic compounds related to species impurities of gasoline was determined by gas chromatography from a standard glass bottle sealed with a sterile stopper based on bromobutyl rubber. The method of atomic emission spectroscopy was used to determine (indirect) the presence of organometallic, organosulfur and metal-inorganic compounds that did not pass through chroma

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17

Tarui, Atsushi, Yukiko Karuo, Kazuyuki Sato, Kentaro Kawai та Masaaki Omote. "Stereoselective Synthesis of Multisubstituted α-fluoro-β-lactams". Current Organic Chemistry 24, № 18 (2020): 2169–80. http://dx.doi.org/10.2174/1385272824666200221114707.

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β-Lactams, found in β -lactam antibiotics, are the structurally distorted cyclic compounds being subjected to nucleophilic acyl substitution reaction. α-Fluorination of β -lactams is a simple and expedient approach to control the reactivity of β-lactam ring toward nucleophilic attack, which would hopefully lead to the new design of future antibiotics. From the viewpoint of obtaining multisubstituted α -fluoro-β-lactams, α -bromo-α- fluoro-β-lactams are considered as key compounds for structure functionalization, including nucleophilic substitution reaction, aldol-type reaction and metal-cataly

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18

Li, Mi-Zhuan, Qi Tong, Wen-Yong Han, et al. "Synthesis of chromone-containing polycyclic compounds via palladium-catalyzed [2 + 2 + 1] annulation." Organic & Biomolecular Chemistry 18, no. 6 (2020): 1112–16. http://dx.doi.org/10.1039/c9ob02690h.

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A variety of chromone-containing polycyclic compounds are efficiently constructed in good yields with excellent diastereoselectivities via palladium-catalyzed [2 + 2 + 1] annulation of 3-iodochromones, α-bromo carbonyl compounds, and tetracyclododecene.

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19

Zyryanov, Mikhail A., Sergey O. Medvedev, Alexey A. Kukushkin, Kseniya Yu Kuchina, Anna S. Kositsyna, and Evgeny V. Root. "DEVELOPMENT OF A MODIFIER FOR GIVING MATERIALS FROM EFFICIENTLY PROCESSED WOOD BIOMASS SPECIAL PROPERTIES." Siberian Journal of Life Sciences and Agriculture 15, no. 6 (2023): 165–79. http://dx.doi.org/10.12731/2658-6649-2023-15-6-964.

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Background. Wood is a unique material in its structure. However, materials made from wood raw materials have such negative properties as insufficient bio- and fire-resistance. In turn, when organizing and improving the efficiency of logging activity, large amounts of practically unused cutting residues is produced. Their modification for the purposes of the forest industry is an effective tool for creating many valuable and demanded products. In particular, arilazo-β-dicarbonyl compounds are widely used as syntons for the production of heterocyclic compounds. Among heterocycles, a large number

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20

Mphahlele, Malose J., and Temitope O. Olomola. "Synthesis and Transformation of 5-Acetyl-2-aryl-6-hydroxybenzofurans into Furanoflavanone Derivatives." Synthesis 51, no. 18 (2019): 3431–42. http://dx.doi.org/10.1055/s-0039-1690001.

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Tandem palladium-catalyzed Sonogashira cross-coupling and heteroannulation of 3-bromo-2,4-dihydroxy-5-iodoacetophenone with arylacetylenes followed by the base-mediated Claisen–Schmidt aldol condensation of the intermediate 5-acetyl-2-aryl-7-bromo-6-hydroxybenzofurans with benzaldehyde derivatives afforded the corresponding linear 2-arylbenzofuranchalcone hybrids. The presence of the o-hydroxy-trans-α,β-unsaturated carbonyl moiety in the prepared furanochalcone hybrids facilitated acid-mediated cycloisomerization into the corresponding linear furanoflavanones. The structures of the prepared co

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21

Agafonova, Anastasiya V., Ilia A. Smetanin, Nikolai V. Rostovskii, Alexander F. Khlebnikov, and Mikhail S. Novikov. "Easy Access to 2-Fluoro- and 2-Iodo-2H-azirines via the Halex Reaction." Synthesis 51, no. 24 (2019): 4582–89. http://dx.doi.org/10.1055/s-0039-1690200.

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A simple gram-scale method for the preparation of esters and dialkylamides of 2-(fluoro/iodo)-2H-azirine-2-carboxylic acids via the halogen exchange (Halex) reaction of 2-bromo-substituted analogues is reported. The method operates with inexpensive and safe reagents, Bu4NF and potassium iodide, providing high product yields. Alternatively, 2-fluoro-2H-azirine-2-carboxylates can be prepared from 2-iodo- and 2-chloro-analogues. The latter compounds can be obtained in practically quantitative yield by treating the 2-iodo- and 2-bromo-2H-azirine-2-carboxylic esters with Bu4NCl.

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22

Savoie, Carole, and Christian Reber. "Near-infrared and visible luminescence and absorption spectroscopy of low-coordinate organometallic rhenium compounds." Canadian Journal of Chemistry 74, no. 1 (1996): 28–31. http://dx.doi.org/10.1139/v96-003.

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Low-temperature absorption and luminescence spectra of four organorhenium compounds were measured in the visible and near-infrared spectral regions. Effects of the temperature, formal oxidation state, and the oxo-, bromo-, and organic ligands on the metal center are reported. The emission maxima of the four compounds show a large variation between 9000 and 14 200 cm−1. Stokes shifts show a smaller variation from 3700 to 4200 cm−1. Luminescence intensities are used to qualitatively characterize nonradiative relaxation processes. Key words: luminescence spectra, absorption spectra, organorhenium

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23

Abakumov, G. A., N. O. Druzhkov, G. G. Kazakov, G. K. Fukin, R. V. Rumyantcev, and V. K. Cherkasov. "N-heterocyclic compounds of phosphorus based ON N,N-disubstituted 9,10-phenanthrenediimines." Доклады Академии наук 489, no. 4 (2019): 368–72. http://dx.doi.org/10.31857/s0869-56524894368-372.

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N‑heterocyclic phospholes based on N,N-disubstituted 9,10-phenanthrenediimines were synthesized. Dimeric 1,3,2-diazaphospholes were obtained by reduction of 2-bromo diazaphospholes. In case phenanthrediimine with the most sterically hindrance, diphosphole can dissociate into phosphorus-centered radicals at record low temperatures (220 K) for this class. This behavior will allow the synthesis of new metal complexes and phosphorus-organic compounds under mild conditions.

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24

Martínez-López, David, Amirhossein Babalhavaeji, Diego Sampedro, and G. Andrew Woolley. "Synthesis and characterization of bis(4-amino-2-bromo-6-methoxy)azobenzene derivatives." Beilstein Journal of Organic Chemistry 15 (December 30, 2019): 3000–3008. http://dx.doi.org/10.3762/bjoc.15.296.

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Aminoazobenzene derivatives with four ortho substituents with respect to the N–N double bond are a relatively unexplored class of azo compounds that show promise for use as photoswitches in biology. Tetra-ortho-methoxy-substituted aminoazobenzene compounds in particular can form azonium ions under physiological conditions and exhibit red-light photoswitching. Here, we report the synthesis and characterization of two bis(4-amino-2-bromo-6-methoxy)azobenzene derivatives. These compounds form red-light-absorbing azonium ions, but only under very acidic conditions (pH < 1). While the low pK a m

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25

Arghiani, Zahra, Seyed Mohammad Seyedi, Mehdi Bakavoli, and Mohsen Nikpour. "Synthesis of new derivatives of 10H-benzo[b]pyridazino[3,4-e][1,4]thiazines." Heterocyclic Communications 21, no. 4 (2015): 215–18. http://dx.doi.org/10.1515/hc-2015-0055.

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AbstractNew 10H-benzo[b]pyridazino[3,4-e][1,4]thiazines were prepared and evaluated for inhibitory activity against soybean 15-lipoxygenase enzyme. These compounds were synthesized by the sequential treatment of 4-bromo-3,6-dichloropyridazine with 2-aminothiophenol and a secondary amine with the subsequent heterocyclization in the presence of sodium amide.

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26

Farah, Salim F., and Robert A. McClelland. "Preparation and reactions of bromo-2-nitro- and bromo-2-aminoimidazoles." Canadian Journal of Chemistry 71, no. 4 (1993): 427–32. http://dx.doi.org/10.1139/v93-063.

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Treatment of 1-methyl-2-nitroimidazole with bromine in water resulted in rapid dibromination to give 4,5-dibromo-1-methyl-2-nitroimidazole. In dioxane, the bromination was slower, and could be controlled to give 4-bromo-1-methyl-2-nitroimidazole 5 and 5-bromo-1-methyl-2-nitroimidazole 6 in a 4:1 ratio. In an attempt to displace the bromine, the monobromo compounds were treated with cysteamine hydrochloride. In each case the nitro group was displaced instead, the 4-bromo 5 resulting in 2-[(2-aminoethyl)thio]-4-bromo-1-methylimidazole 9 as sole product, and the 5-bromo 6 giving two products iden

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27

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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28

Sethi, Arun, Akriti Bhatia, Ranvijay Pratap Singh, and Atul Srivastava. "Synthesis and Evaluation of Some Novel Pregnane Derivatives as Anti-Hyperlipidemic and Anti-Oxidant Agents." Letters in Organic Chemistry 16, no. 1 (2018): 40–49. http://dx.doi.org/10.2174/1570178615666180806123719.

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In the present paper, synthesis of few novel pregnane derivatives and their evaluation as potential anti-hyperlipidemic and anti-oxidant agents has been reported. The synthesis of 3&#946;-hydroxy- 16&#945;-methoxy pregn-5-en-20-one (4) was achieved by reaction of 3&#946;-hydroxy-5,16-pregnadiene-20-one (3) with KOH/MeOH under reflux. Compound 4 on treatment with succinic and phthalic anhydride afforded compound 6 and 7, respectively. The reaction of the C-20-oxime-pregnadiene (8) with 1,5- dibromohexane yielded 20-(O-6-bromo hexyl)-oximino-3&#946;-hydroxy-pregn-5, 16-diene (9).

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29

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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30

Pérez-Otero, Yolanda, M. Isabel Fernández-García, Esther Gómez-Fórneas, Gustavo González-Riopedre, and Marcelino Maneiro. "Mimicking Peroxidase Activity by a Manganese(II) Complex Involving a New Asymmetric Tetradentate Ligand Containing Both Amino and Imino Groups." Journal of Chemistry 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/963152.

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The asymmetric ligand (E)-4-bromo-2-(((2-((5-bromo-2-hydroxybenzyl)(methyl)amino)ethyl)imino)methyl)phenol has been prepared by a novel seven-step route. All organic compounds isolated in each step have been characterised by elemental analysis, infrared and1H NMR spectroscopy, and mass spectrometry. Interaction of this ligand with manganese has been investigated employing an electrochemical method. This method leads to the formation of a neutral manganese(II) complex7in high yield and purity. The complex has been thoroughly characterised by elemental analysis, infrared spectroscopy, mass spect

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31

Agbo, Gildenhuys та Mphahlele. "Inhibitory Effects of Novel 7-Substituted 6-iodo-3-O-Flavonol Glycosides against Cholinesterases and β-secretase Activities, and Evaluation for Potential Antioxidant Properties". Molecules 24, № 19 (2019): 3500. http://dx.doi.org/10.3390/molecules24193500.

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A series of 7-halogeno- (X = F, Cl, Br) and 7-methoxy-substituted acetylated 6-iodo-3-O-flavonol glycosides were prepared, and evaluated for inhibitory effect in vitro against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) activities. 7-Bromo-2-(4-chlorophenyl)-6-iodo-4H-chromen-4-one-3-O-2,3,4,6-O-tetraacetyl-β-d-glucopyranoside (2k) and 7-bromo-6-iodo-2-(4-methoxyphenyl)-4H-chromen-4-one-3-O-2,3,4,6-O-tetraacetyl-β-d-glucopyranoside (2l) exhibited significant inhibitory effect against AChE activity when compared to the activity of the reference standard, donepezil. Compound 2k

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32

Wu, Jingjing, Fanhong Wu, Zhi Li, Mougui Fang, Yunli Liu та Yecheng Liu. "Efficient Monofluoroalkylation of Thiophenols or Phenols with α-Bromo-α-Fluoroketones under Mild Conditions". Synthesis 53, № 13 (2021): 2293–303. http://dx.doi.org/10.1055/a-1395-4788.

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AbstractAn efficient nucleophilic substitution reaction between α-bromo-α-fluoroketones and thiophenols or phenols is reported for the synthesis of α-fluoro-β-ketosulfides or α-fluoro-β-ketone ethers in yields ranging from 78–93%. This method exhibits good functional group tolerance and a broad scope of nucleophilic substrates, including natural phenolic compounds.

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33

Kang, Jun Yong, та Brian T. Connell. "Palladium-Catalyzed Alkynylation of Secondary α-Bromo Carbonyl Compounds via Stille Coupling". Journal of Organic Chemistry 76, № 16 (2011): 6856–59. http://dx.doi.org/10.1021/jo200939u.

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34

Mane, Yogesh D., Smita S. Patil, Dhanraj O. Biradar, and Bhimrao C. Khade. "5-Bromo-1-(4-chlorobenzyl)-1H-indole-2-carboxamides as new potent antibacterial agents." Heterocyclic Communications 24, no. 6 (2018): 327–32. http://dx.doi.org/10.1515/hc-2018-0107.

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Abstract Ten 5-bromoindole-2-carboxamides were synthesized, characterized and evaluated for antibacterial activity against pathogenic Gram-negative bacteria Klebsiella pneumoniae, Escherichia coli, Pseudomonas aeruginosa and Salmonella Typhi using gentamicin and ciprofloxacin as internal standards. Compounds 7a–c, 7g and 7h exhibit high antibacterial activity with a minimum inhibitory concentration (MIC) of 0.35–1.25 μg/mL. Compounds 7a–c exhibit antibacterial activities that are higher than those of the standards against E. coli and P. aeruginosa.

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35

Cao, Gao, Ai-Xi Hu, and Xin-Rong Xiao. "Asymmetric synthesis, crystal structure, and antidepressant activity of 2-aryl-3-alkyl-5-methyl-2-morpholinol hydrochlorides." Canadian Journal of Chemistry 85, no. 1 (2007): 29–36. http://dx.doi.org/10.1139/v06-184.

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2-Aryl-3-alkyl-5-methyl-2-morpholinols were synthesized from the reactions of chiral 2-aminopropan-1-ol with 2-bromo-1-phenylpropan-1-one, 2-bromo-1-(3-chlorophenyl)propan-1-one, 1-(4-(benzyloxy)phenyl)-2-bromopropan-1-one, 2-bromo-1-(6-methoxy- naphthalen-2-yl)propan-1-one, and 1-(4-(benzyloxy)phenyl)pentan-1-one in N-methyl-2-pyrrolidone (NMP), respectively. The 2-aryl-3-alkyl-5-methyl-2-morpholinols were reacted with hydrogen chloride to give the hydrochloride salts with yields of 56%–77%. The structures of the products were proven by means of their 1H NMR, IR, and MS spectroscopic data. Th

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36

Perz, Martyna, Agnieszka Krawczyk-Łebek, Monika Dymarska, Tomasz Janeczko, and Edyta Kostrzewa-Susłow. "Biotransformation of Flavonoids with -NO2, -CH3 Groups and -Br, -Cl Atoms by Entomopathogenic Filamentous Fungi." International Journal of Molecular Sciences 24, no. 11 (2023): 9500. http://dx.doi.org/10.3390/ijms24119500.

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Combining chemical and microbiological methods using entomopathogenic filamentous fungi makes obtaining flavonoid glycosides possible. In the presented study, biotransformations were carried out in cultures of Beauveria bassiana KCH J1.5, Isaria fumosorosea KCH J2, and Isaria farinosa KCH J2.6 strains on six flavonoid compounds obtained in chemical synthesis. As a result of the biotransformation of 6-methyl-8-nitroflavanone using the strain I. fumosorosea KCH J2, two products were obtained: 6-methyl-8-nitro-2-phenylchromane 4-O-β-D-(4″-O-methyl)-glucopyranoside and 8-nitroflavan-4-ol 6-methyle

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37

Yue, Youfeng, Mingxin Yu, and Longguan Zhu. "Synthesis and Photophysical Properties of Conjugated Quinolines." Journal of Chemical Research 2009, no. 7 (2009): 427–29. http://dx.doi.org/10.3184/030823409x465286.

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Aryl halides were prepared by condensation of 2-methylquinoline and bromo- or chloro-arylaldehydes in acetic anhydride. Diarylamines reacted with the aryl halides to afford novel triarylamine derivatives using Pd(OAc)2/P ( o-tolyl)3 as catalyst. These compounds have potential as organic light-emitting device materials and were characterised by FT-IR, 1H NMR and elemental analyses. The UV-vis absorption and photoluminescent spectra of the compounds in CH2CI2 were investigated. The lowest absorption band of the triarylamine derivatives centred at about 400 nm was assigned to a charge-transfer tr

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38

Kalogirou, Andreas S., and Panayiotis A. Koutentis. "Synthesis of 3-Bromo-4-phenylisothiazole-5-carboxylic Acid and 3-Bromoisothiazole-5-carboxylic Acid." Molbank 2023, no. 1 (2023): M1557. http://dx.doi.org/10.3390/m1557.

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Reactions of 3-bromo-4-phenylisothiazole-5-carboxamide and 3-bromoisothiazole-5-carboxamide with NaNO2 (4 equiv.), in TFA, at ca. 0 °C gave the carboxylic acid products in 99% and 95% yields, respectively. The two compounds were fully characterized.

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39

Chmovzh, Timofey N., Daria A. Alekhina, Timofey A. Kudryashev, Rinat R. Aysin, Alexander A. Korlyukov, and Oleg A. Rakitin. "Benzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole) and Its Bromo Derivatives: Molecular Structure and Reactivity." International Journal of Molecular Sciences 24, no. 10 (2023): 8835. http://dx.doi.org/10.3390/ijms24108835.

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Benzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole) (isoBBT) is a new electron-withdrawing building block that can be used to obtain potentially interesting compounds for the synthesis of OLEDs and organic solar cells components. The electronic structure and delocalization in benzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole), 4-bromobenzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole), and 4,8-dibromobenzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole) were studied using X-ray diffraction analysis and ab initio calculations by EDDB and GIMIC methods and were compared to the corresponding properties of benzo[1,2-c:4,5-c′]bis[1,2,

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40

Turhanen, Petri A. "6-Bromo-1-hydroxyhexane-1,1-bisphosphonic Acid Monosodium Salt." Molbank 2022, no. 4 (2022): M1476. http://dx.doi.org/10.3390/m1476.

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The synthesis of 6-bromo-1-hydroxyhexane-1,1-bisphosphonic acid monosodium salt has been described in detail and characterized by 1H, 13C, 31P NMR spectroscopy and high-resolution MS methods. Bisphosphonates are highly important compounds having a lot of medicinal and non-medicinal applications.

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41

Xu, Lanting, Xianhua Pan, Yanyu Chen, et al. "Ligand-Controlled Chemoselective One-Pot Synthesis of Dibenzothiazepinones and Dibenzoxazepinones via Twice Copper-Catalyzed Cross-Coupling." Synlett 28, no. 10 (2017): 1201–8. http://dx.doi.org/10.1055/s-0036-1558959.

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A highly efficient and generally applicable protocol, starting from 2-bromobenzamides and 2-bromo(thio)phenols via twice copper-catalyzed couplings to afford dibenzothiazepines and dibenzoxazepinones has been developed. High levels of yield and chemoselectivity are achieved in a single-pot reaction by using an appropriate ligand. Moreover, this facile methodology allows rapid access to a variety of bioactive compounds and known psychotropic drug, which should broaden its application in organic synthesis.

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42

Karuo, Yukiko, Atsushi Tarui, Kazuyuki Sato, Kentaro Kawai, and Masaaki Omote. "Simple synthesis of multi-halogenated alkenes from 2-bromo-2-chloro-1,1,1-trifluoroethane (halothane)." Beilstein Journal of Organic Chemistry 18 (November 21, 2022): 1567–74. http://dx.doi.org/10.3762/bjoc.18.167.

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A series of aryl fluoroalkenyl ethers that contain chlorine and bromine as well as fluorine atoms were prepared in moderate to good yields via the reactions of phenols and 2-bromo-2-chloro-1,1,1-trifluoroethane (halothane) in the presence of KOH. This simple reaction enabled the construction of highly halogenated compounds with the potential for further functionalization. The reaction involved a highly reactive difluoroethylene intermediate, which was produced by the reaction between halothane and KOH.

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43

Ahn, Young-Beom, Sung-Keun Rhee, Donna E. Fennell, Lee J. Kerkhof, Ute Hentschel, and Max M. Häggblom. "Reductive Dehalogenation of Brominated Phenolic Compounds by Microorganisms Associated with the Marine Sponge Aplysina aerophoba." Applied and Environmental Microbiology 69, no. 7 (2003): 4159–66. http://dx.doi.org/10.1128/aem.69.7.4159-4166.2003.

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ABSTRACT Marine sponges are natural sources of brominated organic compounds, including bromoindoles, bromophenols, and bromopyrroles, that may comprise up to 12% of the sponge dry weight. Aplysina aerophoba sponges harbor large numbers of bacteria that can amount to 40% of the biomass of the animal. We postulated that there might be mechanisms for microbially mediated degradation of these halogenated chemicals within the sponges. The capability of anaerobic microorganisms associated with the marine sponge to transform haloaromatic compounds was tested under different electron-accepting conditi

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44

Dr., S. D. Tarale*1 &. Dr. R. E. Khadsan2. "SYNTHESIS AND BIOLOGICAL EVALUATION OF CERTAIN NEW 3-CHLORO-4-(3-BROMO PHENYL)- N-(4-METHOXY BENZAMIDO)-2-AZETIDINONE DERIVATIVES." GLOBAL JOURNAL OF ENGINEERING SCIENCE AND RESEARCHES [NC-Rase 18] (November 23, 2018): 94–98. https://doi.org/10.5281/zenodo.1495036.

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The chemistry of heterocyclic compounds is a field of organic and pharmaceutical chemistry which is being continuously explored for the synthesis and biological evaluation of new chemical entities in search of better lead molecules. This paper deals with a novel, convenient microwave synthesis for preparation of 3-chloro-4-(3-bromo phenyl)- N-(4-methoxy benzamido)-2-azetidinone by the interaction of 4-methoxy benzohydrazide with 3-bromobenzaldehyde and followed by cyclization to obtain titled 2-azetidinone. Constitution of synthesised  compounds  have been delineated  on the bas

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45

Bawakid, Nahed O., Walied M. Alarif, Hajer S. Alorfi, et al. "Antimicrobial sesquiterpenoids from Laurencia obtusa Lamouroux." Open Chemistry 15, no. 1 (2017): 219–24. http://dx.doi.org/10.1515/chem-2017-0025.

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AbstractPurification of the organic extract of Laurencia obtusa Lamouroux by column chromatography and preparative thin layer chromatography provided four new compounds: a eudesmane-type sesquiterpenoid [eudesma-4(15),11-diene-5,7-diol (1)], a cuparane-type sesquiterpenoid [10-hydroxycuparaldehyde (2)], and two nor-cuparanes [3-hydroxy-15-nor-cuparan-10β-ol (3) and 2-bromo-3-hydroxy-15-nor-cuparan-10β-ol (4)]. Structural identification was made possible by comparison of spectral data with those reported in the literature. Compounds 3 and 4 are significant as nor-cuparanes are rarely isolated f

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Ismailov, Namig I., Sevinj N. Osmanova, Melek M. Agamaliyeva, and Aisha M. Nasibova. "Azo-substituted ethoxyacridine – reagents for the extraction-photometric determination of indium(III)." Butlerov Communications 62, no. 6 (2020): 85–88. http://dx.doi.org/10.37952/roi-jbc-01/20-62-6-85.

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The associates of bromo-indate with azo-substituted ethoxyacridine have been studied by spectrophoto-metric method. It has been found that the associates are well extracted with a mixture of chloroform acetone (4:1). The optimum volume of aqueous and organic phase is equal to 5 ml. The molar ratio of the components in the extractable compounds was studied by the methods of isomolar series, equilibrium shift and a straight line. It was found that bromo-indate associated with azo-ethoxyacridines (AE) in a ratio of 1:1. Study of the effect of foreign ions on the accuracy of the determination of i

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47

Chmovzh, Timofey N., and Oleg A. Rakitin. "7-Bromo-[1,2,5]selenadiazolo[3,4-d]pyridazin-4(5H)-one." Molbank 2021, no. 2 (2021): M1229. http://dx.doi.org/10.3390/m1229.

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New heterocyclic systems containing 1,2,5-chalcogenadiazoles are of great interest for the creation of organic photovoltaic materials and biologically active compounds. In this communication, 3,6-dibromopyridazine-4,5-diamine was investigated in reaction with selenium dioxide in order to obtain 4,7-dibromo-[1,2,5]selenadiazolo[3,4-d]pyridazine. We found that 7-bromo-[1,2,5]selenadiazolo[3,4-d]pyridazin-4(5H)-one, the first representative of the new heterocyclic system, was isolated as a hydrolysis product of the corresponding 4,7-dibromoderivative. The structure of the newly synthesized compou

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48

Zhou, Zhe, Nicole Erin Behnke та László Kürti. "Copper-Catalyzed Synthesis of Hindered Ethers from α-Bromo Carbonyl Compounds". Organic Letters 20, № 17 (2018): 5452–56. http://dx.doi.org/10.1021/acs.orglett.8b02371.

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49

Lasák, Pavel, Kamil Motyka, Vladimír Kryštof, and Jakub Stýskala. "Synthesis, Bacteriostatic and Anticancer Activity of Novel Phenanthridines Structurally Similar to Benzo[c]phenanthridine Alkaloids." Molecules 23, no. 9 (2018): 2155. http://dx.doi.org/10.3390/molecules23092155.

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In this study, we report the synthesis, antibacterial and anticancer evaluation of 38 novel phenanthridines that were designed as analogs of the benzo[c]phenanthridine alkaloids. The prepared phenanthridines differ from the benzo[c]phenanthridines in the absence of a benzene A-ring. All novel compounds were prepared from 6-bromo-2-hydroxy-3-methoxybenzaldehyde in several synthetic steps through reduction of Schiff bases and accomplished by radical cyclization. Twelve derivatives showed high antibacterial activity against Bacillus subtilis, Micrococcus luteus and/or Mycobacterium vaccae at sing

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50

Szöllösy, Aron, George Kotovych, Gábor Tóth та Albert Lévai. "The synthesis and the nuclear magnetic resonance study of β-lactam derivatives of 1,5-benzothiazepines". Canadian Journal of Chemistry 66, № 2 (1988): 279–82. http://dx.doi.org/10.1139/v88-047.

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The synthesis and stereochemistry of seven β-lactam derivatives of 1,5-benzothiazepines are presented. The configurational and conformational analysis is based on nuclear Overhauser effect experiments, together with analysis of the vicinal proton–proton coupling constants. In the preferred conformation, the seven-membered ring is in a half-chair. Only for one compound, 2-aza-4-bromo-4-methyl-5,7-diphenyl-8-thiatricyclo[7.4.0.02,5]trideca-Δ1,9,10,12-trien-3-one, were two diastereomers isolated (compounds 6a and 6b). Six of the compounds have the 4S*, 5R*, 7R* configuration while compound 6b has

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