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.
Pyridazinones having insecticidal and acaricidal activity and compositions containing them
申请人:MINISTERO DELL' UNIVERSITA' E DELLA RICERCA SCIENTIFICA E TECNOLOGICA
公开号:EP0391390B1
公开(公告)日:1995-02-08
Efficient One-Pot Synthesis of 2-Chloro-1,1, 1-trifluoro-2-alkenes Under Solvent-Free Conditions
作者:Mu-Wang Chen、Xing-Guo Zhang、Ping Zhong、Mao-Lin Hu
DOI:10.1080/00397910802431123
日期:2009.2.9
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.
US5169848A
申请人:——
公开号:US5169848A
公开(公告)日:1992-12-08
A novel approach to fluoro-containing alkenes
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.