作者:M.J. Broadhurst、J.M. Percy、M.E. Prime
DOI:10.1016/s0040-4039(97)01315-4
日期:1997.8
Whereas the lithium enolates of acetate and propionate esters of difluoroallylic alcohols fragment rapidly, even at -78 degrees C, methoxy-and benzyloxy-acetates form chelated enolates which undergo smooth [3,3]-rearrangement as their silyl ketene acetals. The latent ketone function can be revealed under mild conditions (MeOH, SOCl2) to afford very highly functionalised CF2 compounds. (C) 1997 Elsevier Science Ltd.