Efficient One-Pot Synthesis of 2-Chloro-1,1, 1-trifluoro-2-alkenes Under Solvent-Free Conditions
摘要:
The improved one-pot Wittig reaction had been used to prepare trifluoromethyl-containing olefins under solvent-free conditions. Treatment of aldehydes with PPh3 and CF3CCl3 in the presence of K2CO3 at 100C afforded 2-chloro-1,1,1-trifluoro-2-alkenes in good to moderate yields.
作者:Vasily N Korotchenko、Alexey V Shastin、Valentine G Nenajdenko、Elisabeth S Balenkova
DOI:10.1016/s0040-4020(01)00701-3
日期:2001.8
A new and general one-pot transformation of aromatic aldehydes to fluorinated olefins containing -CH=C(Cl)CF3 or -CH=C(F)CClF2 moieties is described. Freons CCl3CF3 and CCl2FCCIF2 were used as trifluoromethyl and difluoromethyl C-2-building blocks respectively. A proposed mechanism for the reaction is discussed. (C) 2001 Elsevier Science Ltd. Ali rights reserved.
MEAZZA, GIOVANNI;CAPUZZI, LUIGI;PICCARDI, PAOLO, SYNTHESIS (BRD),(1989) N, C. 331-334
作者:MEAZZA, GIOVANNI、CAPUZZI, LUIGI、PICCARDI, PAOLO