The Synthesis and Strecker Reaction of 2-Chlorotetrafluoroethanesulfinyl Ketimines
作者:Kai Yang、Li-Juan Liu、Jin-Tao Liu
DOI:10.1021/jo500008e
日期:2014.4.4
A series of 2-chlorotetrafluoroethanesulfinyl ketimines were prepared from 2-chlorotetrafluoroethanesulfinamide and ketones in high yields, and their Strecker reactions with TMSCN have been investigated. High yields and excellent diastereoselectivities were achieved in the presence of a catalytic amount of CsF under mild conditions. The six-membered chairlike models were proposed to account for the high stereoselective Strecker reaction.
Optically Pure Polyfluoroalkanesulfinamides: Synthesis and Application as Promising and Monitorable Chiral Auxiliaries
作者:Li-Juan Liu、Ling-Jun Chen、Peng Li、Xiao-Bo Li、Jin-Tao Liu
DOI:10.1021/jo200119x
日期:2011.6.3
Efficient synthesis of enantiopure polyfluoroalkanesulfinamides (PFSAs) has been achieved. Their application as novel chiral auxiliaries with an electron-withdrawing and F-19 NMR monitorable polyfluoroalkyl group was initially demonstrated in an asymmetric Strecker reaction under mild conditions.