Operationally Simple and Efficient Workup Procedure for TBAF-mediated Desilylation: Application to Halichondrin Synthesis

Overview

Journal Org Lett

Publisher American Chemical Society

Specialties Biochemistry
Chemistry

Date 2007 Feb 9

PMID 17286380

Citations 16

Authors

Yosuke Kaburagi

Yoshito Kishi

Affiliations

Soon will be listed here.

Abstract

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. [reaction: see text].

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