Abstract
A novel 1,2-diol-protecting group, p-silyloxybenzylidene group, has been developed. In addition to the stepwise deprotection conditions including desilylation and the subsequent acidic hydrolysis of the p-hydroxybenzylidene group in AcOH–THF–H 2O, we have established the one-pot deprotection under basic conditions [K 2CO 3 (5 equiv), NH 2OH·HCl (5 equiv), and CsF (1 equiv) in MeOH–H 2O].
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