Relevant bibliographies by topics / Α-bromo derivatives

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Academic literature on the topic 'Α-bromo derivatives'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Α-bromo derivatives"

1

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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2

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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3

Hřebabecký, Hubert, та Antonín Holý. "Synthesis of Deoxy, Dideoxy and Didehydrodideoxy Analogs of 9-(4-C-Hydroxymethyl-α-L-pentofuranosyl)adenine". Collection of Czechoslovak Chemical Communications 59, № 7 (1994): 1654–64. http://dx.doi.org/10.1135/cccc19941654.

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Condensation of 1,2-di-O-acetyl-3,5-di-O-benzoyl-4-C-benzoyloxymethyl-L-arabinofuranose with N6-benzoyladenine, catalyzed with tin tetrachloride, afforded nucleoside I, which upon partial deacetylation and subsequent mesylation was converted into 9-(3,5-di-O-benzoyl-4-C-benzoyloxymethyl-2-O-methanesulfonyl-α-L-arabinofuranosyl)adenine (III). 9-(2,5,6-Tri-O-acetyl-4-C-acetoxymethyl-3-O-methanesulfonyl-α-L-arabinofuranosyl)-N6-benzoyladenine (V) was obtained by condensation of 1,2,5-tri-O-acetyl-4-C-acetoxymethyl-3-O-methanesulfonyl-L-arabinose with N6-benzoyladenine. Reaction of mesyl derivativ
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4

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 &amp; LS Patkar College, Goregaon (W). Mumbai-400 062, India E-mail: ajayaaudi@rediffmail.com&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 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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5

Ding, Ran, Zhi-Dao Huang, Zheng-Li Liu, Tian-Xiang Wang, Yun-He Xu та Teck-Peng Loh. "Palladium-catalyzed cross-coupling of enamides with sterically hindered α-bromocarbonyls". Chemical Communications 52, № 32 (2016): 5617–20. http://dx.doi.org/10.1039/c5cc10653b.

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Palladium-catalyzed intermolecular alkylation of enamides with α-bromo carbonyls was developed. Under mild reaction conditions, various cyclic and acyclic enamides reacted well with α-bromo carbonyls to afford the corresponding multi-substituted alkene products in good yields. The coupling products could be converted into very useful γ-amino acid, δ-amino alcohol, 1,4-dicarbonyl and γ-lactam derivatives.
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6

Kirihara, Masayuki, Tomofumi Takuwa, Maiko Okumura та ін. "ChemInform Abstract: α-Bromo-α,α-difluoroallyl Derivatives as Synthetic Intermediate: Nucleophilic Substitution of α-Bromo-α,α-difluoroallyl Derivatives in the Presence of Palladium Catalysts." ChemInform 31, № 50 (2000): no. http://dx.doi.org/10.1002/chin.200050029.

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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

Tsuchiya, Yuto, Ryota Onai, Daisuke Uraguchi та Takashi Ooi. "Redox-regulated divergence in photocatalytic addition of α-nitro alkyl radicals to styrenes". Chemical Communications 56, № 75 (2020): 11014–17. http://dx.doi.org/10.1039/d0cc04821f.

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Magwaza, Nontokozo M., Garland K. More, Samantha Gildenhuys та Malose J. Mphahlele. "In Vitro α-Glucosidase and α-Amylase Inhibition, Cytotoxicity and Free Radical Scavenging Profiling of the 6-Halogeno and Mixed 6,8-Dihalogenated 2-Aryl-4-methyl-1,2-dihydroquinazoline 3-Oxides". Antioxidants 12, № 11 (2023): 1971. http://dx.doi.org/10.3390/antiox12111971.

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Series of the 6-bromo/iodo substituted 2-aryl-4-methyl-1,2-dihydroquinazoline-3-oxides and their mixed 6,8-dihalogenated (Br/I and I/Br) derivatives were evaluated for inhibitory properties against α-glucosidase and/or α-amylase activities and for cytotoxicity against breast (MCF-7) and lung (A549) cancer cell lines. The 6-bromo-2-phenyl substituted 3a and its corresponding 6-bromo-8-iodo-2-phenyl-substituted derivative 3i exhibited dual activity against α-glucosidase (IC50 = 1.08 ± 0.02 μM and 1.01 ± 0.05 μM, respectively) and α-amylase (IC50 = 5.33 ± 0.01 μM and 1.18 ± 0.06 μM, respectively)
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10

Mishra, Ashish A., та Bhalchandra M. Bhanage. "Ru-Tethered (R,R)-TsDPEN with DMAB as an efficient catalytic system for high enantioselective one-pot synthesis of chiral β-aminol via asymmetric transfer hydrogenation". New Journal of Chemistry 45, № 12 (2021): 5357–62. http://dx.doi.org/10.1039/d0nj06108e.

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This work reflects Ru-tethered-TsDPEN as an active chiral catalyst for one pot selective synthesis of optically active α-substituted alcohols and its derivatives from α-bromo ketones in the presence of dimethylamine borane (DMAB) as the hydrogen source.
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Book chapters on the topic "Α-bromo derivatives"

1

"Chiral Auxiliaries." In Chirality from Dynamic Kinetic Resolution. The Royal Society of Chemistry, 2011. http://dx.doi.org/10.1039/bk9781849731973-00001.

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This chapter deals with the use of chiral auxiliaries for the asymmetric induction through a DKR process. In the last fifteen years, a wide number of various chiral auxiliaries have been employed in DKR processes occurring in different types of reactions, such as substitution reactions involving configurationally-labile alkyl halides or configurationally-labile anions, esterification and transesterification reactions, cyclocondensation reactions, reductions, cycloaddition reactions, and miscellaneous reactions. One of the most studied reactions has been the nucleophilic substitution on configu
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2

Taber, Douglass F. "Organocatalyzed C–C Ring Construction: The Jørgenson Synthesis of (+)-Estrone." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0070.

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Ana Maria Faísca Phillips and Maria Teresa Barros of the Universidade Nova de Lisboa added (Eur. J. Org. Chem. 2014, 152) the bromo ester 1 to cinnamaldehyde 2 to give the cyclopropyl phosphonate 3 in high ee. Mukund P. Sibi and Jayaraman Sivaguru of North Dakota State University used (Angew. Chem. Int. Ed. 2014, 53, 5604) an organocatalyst to mediate the 2+2 photocycloaddition of 4, leading to 5. Shu-Li You of the Shanghai Institute of Organic Chemistry expanded (Org. Lett. 2014, 16, 1810) the four-membered ring of 6 to create the cyclopentanone 7 in high ee. Damien Bonne and Jean Rodriguez o
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