A novel and straightforward method to accomplish regioselective αâ²-bromination of α,β-unsaturated ketones, in which a substrateâCF3CO2HâCuBrâEt4NOTsâMeCN system is subjected to electrolysis with variable current density, is described.
Mironov,V.A. et al., Journal of Organic Chemistry USSR (English Translation), 1976, vol. 12, p. 1002 - 1006
作者:Mironov,V.A. et al.
DOI:——
日期:——
TMS·OTf-Catalyzed α-bromination of carbonyl compounds by N-bromosuccinimide
作者:Samar Kumar Guha、Bo Wu、Beom Soo Kim、Woonphil Baik、Sangho Koo
DOI:10.1016/j.tetlet.2005.11.023
日期:2006.1
Various carbonyl compounds undergo alpha-bromination reaction under a mild and practical condition utilizing N-bromosuccinimide (NBS), catalyzed by trimethylsilyl trifluoromethanesulfonate ((TMSOTf)-O-.). This method is also effective for the side-chain bromination of heteroaromatic carbonyl compounds without the ring brominations. (c) 2005 Elsevier Ltd. All rights reserved.