A simple and highly efficient method has been developed with which to cleave the N-benzyl group on N-mono- or disubstituted carboxamides using N-bromosuccinimide (NBS) at room temperature. All the 31 substrates examined showed moderate to excellent deprotection yields. Our study also indicated that the debenzylation may involve an oxygen/light initiated free radical mechanism.
开发了一种简单且高效的方法,可以在室温下使用N-
溴琥珀
酰亚胺(
NBS)去除N-单取代或双取代羧酰胺上的N-苄基基团。所有31种被检验的底物表现出中等到优秀的去保护产率。我们的研究还表明,去苄基化可能涉及氧/光引发的自由基机制。