Free radical chain reactions for the preparation of novel anomeric carbohydrate difluoromethylene -phosphonates and -phosphonothioates
作者:Timothée F. Herpin、William B. Motherwell、Brian P. Roberts、Sylvain Roland、Jean-Marc Weibel
DOI:10.1016/s0040-4020(97)10007-2
日期:1997.11
The generation of phosphonyl or thiophosphonyl radicals in the presence of carbohydrate gem-difluoenol ethers provides new routes to anomeric difluoromethylenephosphonates and difluoromethylenephosphonothioates, respectively.
Preparation of some new anomeric carbohydrate difluoromethylenephosphonates via phosphonyl radical addition to gem-difluoroenol ethers
作者:Timoth�e F. Herpin、J. Sarah Houlton、William B. Motherwell、Brian P. Roberts、Jean-Marc Weibel
DOI:10.1039/cc9960000613
日期:——
Generation of a phosphonyl radical either from diethyl phosphite, or diethyl (phenylselenyl)phosphonate in conjunction with tributylstannane, in the presence of a carbohydrate gem-difluoroenol ether provides a new route to anomeric difluoromethylenephosphonates; in the course of these reactions, some unusual stereochemical effects are observed.