A new route to α-trifluoromethyl-α,β-unsaturated esters
作者:Xingang Zhang、Feng-Ling Qing、Yonggang Yang、Jiang Yu、Xiang-Kai Fu
DOI:10.1016/s0040-4039(00)00279-3
日期:2000.4
The treatment of α-bromo-α,β-unsaturated esters with FSO2CF2CO2Me and CuI in DMF/HMPA constitutes a new synthetic scheme for the preparation of α-trifluoromethyl-α,β-unsaturated esters.
在DMF / HMPA中用FSO 2 CF 2 CO 2 Me和CuI处理α-溴-α,β-不饱和酯构成了制备α-三氟甲基-α,β-不饱和酯的新合成方案。
The stereospecific trifluoromethylation of α-iodo-α,β-unsaturated esters: a novel synthesis of (Z)-α-trifluoromethyl-α,β-unsaturated esters
作者:Xingguo Zhang、Feng-Ling Qing、Yiyuan Peng
DOI:10.1016/s0022-1139(00)00400-0
日期:2001.3
This paper describes simple and successful methods for the preparation of alpha -iodo-alpha,beta -unsaturated esters. The trifluoromethylation of (Z)alpha -iodo-alpha,beta -unsaturated esters stereo-selectively provides (Z)-alpha -trifluoromethyl-alpha,beta -unsaturated esters. (C) 2001 Elsevier Science B.V. All rights reserved.
Trifluoromethylation of Alkenyl Bromides and Iodides (Including 5-Iodouracils) with (CF<sub>3</sub>)<sub>2</sub>Hgand Cu (“Trifluoromethylcopper”)<sup>1</sup>
作者:Ireneusz Nowak、Morris J. Robins
DOI:10.1021/jo062544a
日期:2007.3.1
[GRAPHIC]Bromo- and iodoalkenes undergo trifluoromethylation efficiently in DMA with "CF3Cu" generated from (CF3)(2)Hg and Cu. Variable stereochemical inversion is observed with substrates having a gem-carbonyl group. Substrates having gem-hydrogen, -alkyl, or -alkenyl groups give products with stereochemical retention.