An efficient synthesis of tetraethyl fluoromethylenediphosphonate and derivatives from diethyl dibromofluoromethylphosphonate
摘要:
Treatment of diethyl I,1-dibromo-1-fluoromethylphosphonate with n-BuLi (1:1) at low temperature affords by self-trapping in quantitative yield the lithiated derivative of tetraethyl fluoromethylenediphosphonate which is reacted with alkylating and halogenating agents or converted with high selectivity into (E) diethyl fluorovinylphosphonates by reaction with carbonyl compounds. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
Novel phosphonate derivatives of certain nucleosides
申请人:MERRELL DOW PHARMACEUTICALS INC.
公开号:EP0477454A1
公开(公告)日:1992-04-01
This invention relates to novel phosphonate derivatives of certain nucleoside analogs, to the methods for their preparation and to their use as anti-viral agents.