作者:Or Cohen、Shlomo Rozen
DOI:10.1016/j.tet.2008.03.018
日期:2008.5
A new method for the preparation of β,β-difluoro- (and other gem-difluoro) acids has been developed. It is based on the fact that 3-oxocarboxylic esters are easy to make and convert to the corresponding dithiane derivatives. These dithianes reacted with BrF3, a commercial, but rarely used reagent in organic chemistry, under very mild conditions to form the corresponding difluoroesters, which in turn
已经开发了一种制备β,β-二氟-(和其他宝石-二氟)酸的新方法。基于这样的事实,即3-氧代羧酸酯易于制备并转化为相应的二噻吩衍生物。这些二噻吩在非常温和的条件下与BrF 3(一种在商业上很少使用的有机化学试剂)发生反应,形成相应的二氟酸酯,然后可以将其定量地水解为游离的宝石-二氟酸。