<i>p</i>-Methylbenzyl Group: Oxidative Removal and Orthogonal Alcohol Deprotection
作者:Kazutada Ikeuchi、Kentaro Murasawa、Kenya Ohara、Hidetoshi Yamada
DOI:10.1021/acs.orglett.9b02144
日期:2019.9.6
describe the practical removal of p-methylbenzyl (MBn) protections of alcohols by treatment with 2,3-dichloro-5,6-dicyano-p-benzoquinone. When a molecule bears benzyl and MBn groups, the oxidant selectively removes the latter groups. Further, the MBn groups tolerate ceric ammonium nitrate, resulting in chemoselective removal of the p-methoxybenzyl group in the presence of the MBn groups. These orthogonal
我们描述了通过用2,3-二氯-5,6-二氰基-对-苯醌处理来实际去除醇的对甲基苄基(MBn)保护。当一个分子带有苄基和MBn基团时,氧化剂会选择性地除去后者。此外,MBn基团耐受硝酸铈铈,导致在MBn基团存在下化学选择性除去对甲氧基苄基。这些正交的醇脱保护将提供有机化合物的新颖合成策略。