1,2-Dimethoxy-4,5-dimethylene: a new protecting group for acyclic amino acid derivatives prepared by Stevens rearrangement
作者:Eiji Tayama、Keisuke Takedachi、Hajime Iwamoto、Eietsu Hasegawa
DOI:10.1016/j.tetlet.2012.01.013
日期:2012.3
A new protecting group, 1,2-dimethoxy-4,5-dimethylene, for acyclic amino acid derivatives could be introduced by N,N-dialkylation with 1,2-bis(bromomethyl)-4,5-dimethoxybenzene (1) and removed via amine de-alkylation with acyl chlorides. The method can be used with base-induced [2,3] and [1,2] Stevens rearrangement products.
通过用1,2-双(溴甲基)-4,5-二甲氧基苯(1)和N,N-二烷基化可以引入无环氨基酸衍生物的新保护基1,2-二甲氧基-4,5-二亚甲基。通过胺与酰氯的脱烷基反应除去。该方法可用于碱基诱导的[2,3]和[1,2]史蒂文斯重排产物。