Results 1 to 10 of about 12,935 (248)

Palladium-catalysed cross-coupling reaction of ultra-stabilised 2-aryl-1,3-dihydro-1H-benzo[d]1,3,2-diazaborole compounds with aryl bromides: A direct protocol for the preparation of unsymmetrical biaryls

Beilstein Journal of Organic Chemistry, 2014
There has been a significant interest in organoboron compounds such as arylboronic acids, arylboronate esters and potassium aryltrifluoroborate salts because they are versatile coupling partners in metal-catalysed cross-coupling reactions.
Siphamandla Sithebe, Ross S. Robinson
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Copper-promoted C5-selective bromination of 8-aminoquinoline amides with alkyl bromides

Beilstein Journal of Organic Chemistry
An efficient and practical method for the synthesis of C5-brominated 8-aminoquinoline amides via a copper-promoted selective bromination of 8-aminoquinoline amides with alkyl bromides was developed.
Changdong Shao, Chen Ma, Li Li, Jingyi Liu, Yanan Shen, Chen Chen, Qionglin Yang, Tianyi Xu, Zhengsong Hu, Yuhe Kan, Tingting Zhang   +10 more
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Ionic Liquid-Mediated, Rapid N-Alkylation of Heterocyclic Compounds with Trialkyl Phosphites in the Presence of Dialkyl Acetylenedicarboxylates

E-Journal of Chemistry, 2012
Ionic liquids such as 1,3-dialkylimidazolium bromides and make excellent solvents for N-alkylation of heterocyclic compounds such as saccharin and rhodanine with trialkyl phosphites in the presence of dialkyl acetylenedicarboxylates.
Alireza Hassanabadi, Mohammad H. Mosslemin, Mohammad Anary-Abbasinejad, Azadeh Kalantarinejad, Mozhdeh Jerjisi Shirazi   +4 more
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Migratory functionalization of unactivated alkyl bromides for construction of all-carbon quaternary centers via transposed tert-C-radicals

Nature Communications, 2020
Formation of tertiary C(sp3)-C bonds is a formidable challenge due to steric interactions and low barriers for isomerization of intermediates. Here, the authors show a Ni-catalyzed migratory 3,3-difluoroallylation of unactivated alkyl bromides at remote ...
Chuan Zhu, Ze-Yao Liu, Luning Tang, Heng Zhang, Yu-Feng Zhang, Patrick J. Walsh, Chao Feng   +6 more
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Pd‐Catalyzed Cross‐Coupling of Alkylbisboronic Esters

ChemistryOpen
A Pd‐catalyzed cross‐coupling between alkylbisboronic esters and aryl bromides is described. A variety of aryl bromides are found to be competent substrates in the reaction.
Philip P. Scott, Christopher E. Baird, Elizabeth A. Kraichely, Liam M. Radeke, Timothy J. Barker   +4 more
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A Facile Synthesis of Substituted Benzyl Selenocyanatesâ€

Molecules, 2004
Benzyl selenocyanates can be made from the corresponding benzylic bromides or chlorides in 30-60 minutes using acetonitrile as a solvent. The products may be obtained pure in satisfactory yields without recourse to chromatography.
Joanne Kivella Tillotson, Joelle Rodriguez, Corey Mostafa, Bianca Matos, Linda A. Jacob   +4 more
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Improved Synthesis of 1-O-Acyl-β-d-Glucopyranose Tetraacetates

Molecules, 2017
An improved synthesis of 1-O-acyl glucosyl esters that avoids the use of expensive Ag reagents as well as the hydrolysis of unstable glucosyl bromides is reported. Notably, β-configuration products were obtained exclusively in good yields.
Yu Chen, Huan Lu, Yanyu Chen, Wansheng Yu, Hui Dai, Xianhua Pan   +5 more
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Nickel-catalyzed reductive thiolation and selenylation of unactivated alkyl bromides

Nature Communications, 2018
Chalcogen-containing compounds find broad application in chemical industry. Here, the authors report a nickel-catalyzed reductive chalcogenation of unactivated alkyl bromides with thiosulfonates and selenosulfonates to access a range of unsymmetrical ...
Yi Fang, Torben Rogge, Lutz Ackermann, Shun-Yi Wang, Shun-Jun Ji   +4 more
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Absorption of ultrasonic waves in aqueous solutions of α-cyclodextrin with alkylpyridinium or alkyltrimethylammonium bromides

Archives of Acoustics, 2014
Measurements of the absorption coefficient, α/f2, of aqueous solutions of α-cyclodextrin with alkylpyridinium bromides CnH2n+1C5H4NBr or alkyltrimethylammonium bromides CnH2n+1N(CH3)3Br (n = 8, 10, 12), were carried out at 15, 25, 35 and 45°C in the ...
A. BALCERZAK, R. PŁOWIEC, A. JUSZKIEWICZ   +2 more
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One-pot synthesis of cyanohydrin derivatives from alkyl bromides via incorporation of two one-carbon components by consecutive radical/ionic reactions

Beilstein Journal of Organic Chemistry, 2014
The consecutive radical/ionic reaction consisting of radical formylation of alkyl bromides and nucleophilic addition of a cyanide ion was investigated, which gave moderate to good yields of cyanohydrin derivatives in one-pot.
Shuhei Sumino, Akira Fusano, Hiroyuki Okai, Takahide Fukuyama, Ilhyong Ryu   +4 more
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