An Efficient and Highly Selective
Synthesis of (<i>Z</i>)-Fluoroenol Phosphates
from Hydroxy Difluorophosphonates
作者:Petr Beier、Radek Pohl、Anastasia Alexandrova
DOI:10.1055/s-0028-1087803
日期:——
Substituted 2-aryl-2-hydroxy-1,1-difluorophosphonates undergo a reaction with potassium tert-butoxide to provide selectively (Z)-2-fluoro-1-arylvinyl phosphates in high yields. phosphonates - phosphates -rearrangements- eliminations - enols
Nucleophilic Difluoromethylenation of Ketones Using Diethyl (Difluoro(trimethylsilyl)methyl)phosphonate Mediated by 18-Crown-6 Ether/KOAc
作者:Yu-Hui Wang、Zhong-Yan Cao、Jian Zhou
DOI:10.1021/acs.joc.6b01457
日期:2016.9.2
We report a general difluoromethylenation of various types of ketones using diethyl (difluoro(trimethylsilyl)methyl)phosphonate mediated by the combination of 18-crown-6 and KOAc. It provides facile access to structurally diverse β-hydroxy-α,α-difluorophosphonates as interesting targets for medicinal research.
Nucleophilic difluoromethylation and difluoromethylenation of aldehydes and ketones using diethyl difluoromethylphosphonate
作者:Petr Beier、Anastasia V. Alexandrova、Mikhail Zibinsky、G.K. Surya Prakash
DOI:10.1016/j.tet.2008.10.006
日期:2008.12
New methodology for difluoromethylation and difluoromethylenation of aldehydes and ketones based on nucleophilic fluorination using diethyl difluoromethylphosphonate (1) was developed.