Operationally simple and efficient workup procedure for TBAF-mediated desilylation: Application to halichondrin synthesis

被引：94

作者：

Kaburagi, Yosuke ^{[1
]}

Kishi, Yoshito ^{[1
]}

机构：

[1] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA

来源：

ORGANIC LETTERS | 2007年 / 9卷 / 04期

关键词：

D O I：

10.1021/ol063113h

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

An operationally simple and efficient workup method for tetrabutylammonium fluoride (TBAF)-mediated t-butyldimethylsilyl (TBS) deprotection has been developed. The procedure includes addition of a sulfonic acid resin and calcium carbonate, followed by filtration and evaporation. This method eliminates the tedious aqueous-phase extraction process to remove excess TBAF and materials derived from TBAF, thereby making the protocol highly amenable to multiple TBS deprotections. Its efficiency and usefulness were demonstrated by using the transformation of 1a to 3a in the halichondrin synthesis.

引用

页码：723 / 726

页数：4

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