The sisyl (tris(trimethylsilyl)silyl) group: A fluoride resistant, photolabile alcohol protecting group
作者:Michael A. Brook、Christine Gottardo、Sonya Balduzzi、Mustafa Mohamed
DOI:10.1016/s0040-4039(97)01673-0
日期:1997.10
The use of the tris(trimethylsilyl)silyl (sisyl) group as a photolabile protecting group for primary and secondary alcohols was demonstrated. Sisyl ethers of a number of alcohols (yields 70-97%) were stable to many synthetic protocols, but could be deprotected using photolysis to give the starting alcohols (yields 62-95%). (C) 1997 Elsevier Science Ltd.
The photolytic and hydrolytic lability of sisyl (Si(SiMe3)3) ethers, an alcohol protecting group
作者:Michael A. Brook、Sonya Balduzzi、Mustafa Mohamed、Christine Gottardo
DOI:10.1016/s0040-4020(99)00562-1
日期:1999.8
The tris(trimethylsilyl)silyl (sisyl) group is a photolabile protectinggroup for primary and secondary alcohols. Sisyl (tris(trimethylsilyl)silyl) ethers 2b–11b of a number of primary and secondary alcohols 2a–11a were prepared in yields ranging from 70–97%. The resulting silyl ethers were stable to aqueous bases, Grignard reagents and Wittig reagents as would be expected for bulky alkoxysilanes.