“All-Water” Synthesis of β-Amino α,α-Difluoro Ketones from Fluorinated Enol Silyl Ethers and Imines
作者:Ye-bin Wu、Li Wan、Guo-ping Lu、Chun Cai
DOI:10.1002/ejoc.201700591
日期:2017.6.30
A one-pot synthesis of β-amino α,α-difluoro ketones is developed without any additives. Through a series of control experiments we found that water plays a crucial and indispensable role. The hydrogen bond between water and fluorinated enol silylether has a significant impact on the addition reaction.
Reaction of aldimines and difluoroenoxysilane, an unexpected protocol for the synthesis of 2,2-difluoro-3-hydroxy-1-ones
作者:Zhi-Liang Yuan、Yin Wei、Min Shi
DOI:10.1016/j.tet.2010.07.034
日期:2010.9
An unexpected reaction of aldimines and difluoroenoxysilane promoted with Zn(OTf)(2) was disclosed. The reaction gave the unexpected Mukaiyama-aldol adducts 3 in excellent yields (up to 87%) with the addition of H2O and the corresponding Mannich-type adduct 4 was not observed in this catalytic system. (C) 2010 Elsevier Ltd. All rights reserved.