An efficient and recyclable catalyst for the cleavage of tert-butyldiphenylsilyl ethers
摘要:
An efficient, chemoselective, and environment-friendly method for the deprotection of tert-butyldiphenylsilyl ethers mediated by triflic acid supported on silica gel is reported. A wide range of tert-butyldiphenylsilyl ethers derived from carbohydrate and saponin residues can be smoothly cleaved in the presence of various types of other protecting groups in good to excellent yields in acetonitrile. This heterogeneous reaction does not require aqueous workup, and the supported catalyst can be readily recycled. (C) 2012 Elsevier Ltd. All rights reserved.
An efficient method for the cleavage of <i>tert</i>-butyldiphenylsilyl ethers catalyzed by 1,3-dibromo-5,5-dimethylhydantoin
作者:Zong Han
DOI:10.1080/07328303.2022.2031206
日期:2022.1.2
Abstract An efficient method for the deprotection of tert-butyldiphenylsilyl (TBDPS) ethers using 1,3-dibromo-5,5-dimethylhydantoin (DBH) as catalyst and dimethyl sulfoxide (DMSO) as solvent has been established. This method is useful for many kinds of compounds, such as carbohydrates, steroids, benzyl alcohols and primary fatty alcohols. Substrates bearing acetates, benzoates, pivaloates, mesylates, and benzyl