New Strategies for Protecting Group Chemistry: Synthesis, Reactivity, and Indirect Oxidative Cleavage of <i>para</i>-Siletanylbenzyl Ethers
作者:Sami F. Tlais、Hubert Lam、Sarah E. House、Gregory B. Dudley
DOI:10.1021/jo802229p
日期:2009.3.6
of arylmethyl ether protecting groups. The para-siletanylbenzyl (PSB) ether is electronically similar to the benzyl ether. Cleavage of the PSB ether is accomplished under mild conditions—involving alkaline hydrogen peroxide—that are unique among cleavage protocols for arylmethyl ethers. Furthermore, the PSB group affords the user new flexibility in the implementation of protecting group strategies that
本文报道的是芳基甲基醚保护基的不断增长的军火库中的一个新条目。的对位-siletanylbenzyl(PSB)醚是电子地类似于苄基醚。PSB醚的裂解是在温和的条件下完成的(涉及碱性过氧化氢),这在芳基甲基醚的裂解方案中是独一无二的。此外,PSB基团在实施围绕多个芳基甲基醚保护基团的保护基团策略方面为用户提供了新的灵活性。除了基于过氧化氢的裂解方案外,还可以将PSB醚转化为对甲氧基苄基(PMB)醚,并从预先存在的对位中组装PSB醚描述了-溴苄基(PBB)醚。最后,报道了一种用于在中性“混合和加热”条件下安装PSB醚的新试剂。