An efficient silylating system for 1 degrees, 2 degrees, and 3 degrees, alcohols, consisting of a silyl chloride/N-methylimidazole/iodine, was developed. Synthetic and mechanistic aspects of this new reagent system, and particularly the role of iodine were investigated in detail using H-1 NMR spectroscopy. (C) 2008 Elsevier Ltd. All rights reserved.
Catalytic silylation of secondary alcohols by pyridine N-oxide derivative
作者:Keisuke Yoshida、Ken-ichi Takao
DOI:10.1016/j.tetlet.2014.10.087
日期:2014.12
The reaction of t-butyldiphenylsilyl (TBDPS) chloride with secondary alcohols was catalyzed by pyrrolidinopyridine N-oxide (PPYO) in the presence of diisopropylethylamine (DIPEA) at room temperature, giving the corresponding TBDPS ethers in high yields. (C) 2014 Elsevier Ltd. All rights reserved.