(Triisopropylsilyl)acetaldehyde acetal as a novel protective group for 1,2-diols
作者:Jun’ichi Uenishi、Yusuke Tanaka、Nobuyuki Kawai
DOI:10.1016/j.tetlet.2006.05.121
日期:2006.7
(Triisopropylsilyl)acetaldehyde dimethyl acetal (TIPS-ADMA) was synthesized from chlorotriisopropylsilane in three steps. Cyclic and acyclic 1,2-diols can be transformed to (triisopropylsilyl)ethylidene acetals (TIPS-AA). Removal of the acetal by LiBF4 regenerates the starting diol in excellent yield even in the presence of an acetonide of 1,2-diol. The TIPS-AA group can survive under the deprotection