A facile one-pot synthesis of α-fluoro-α,β-unsaturated esters from alkoxycarbonylmethyltriphenylphosphonium bromides
摘要:
A convenient one-pot synthesis of alpha-fluoro-alpha,beta-unsaturated esters from ethoxy- and tert-butoxycarbonylmethyltriphenylphosphoniurn bromide was developed. The fluorinated phosphoranes, generated in situ from alkoxycarbonylmethyltriphenylphosphoniurn bromides and 1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (Selectfluor(R)), undergo a Wittig reaction with aldehydes to yield alpha-fluoro-alpha,beta-misaturated esters with (Z)-selectivity. (C) 2003 Elsevier Ltd. All rights reserved.
Microreactors for the synthesis of fluorinated materials
作者:Noriaki Miyake、Tomoya Kitazume
DOI:10.1016/s0022-1139(03)00109-x
日期:2003.8
The utility of microreactor for the synthesis of alpha-fluoro-alpha,beta-unsaturated esters, trifluoromethylation and Michael addition reaction, is described. (C) 2003 Elsevier Science B.V. All rights reserved.
A facile one-pot synthesis of α-fluoro-α,β-unsaturated esters from alkoxycarbonylmethyltriphenylphosphonium bromides
作者:Yumiko Suzuki、Masayuki Sato
DOI:10.1016/j.tetlet.2003.12.103
日期:2004.2
A convenient one-pot synthesis of alpha-fluoro-alpha,beta-unsaturated esters from ethoxy- and tert-butoxycarbonylmethyltriphenylphosphoniurn bromide was developed. The fluorinated phosphoranes, generated in situ from alkoxycarbonylmethyltriphenylphosphoniurn bromides and 1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (Selectfluor(R)), undergo a Wittig reaction with aldehydes to yield alpha-fluoro-alpha,beta-misaturated esters with (Z)-selectivity. (C) 2003 Elsevier Ltd. All rights reserved.