Demethylenation of Tröger's Bases with Concomitant Hydrazine Formation
作者:Xuefeng Gao、Carissa S. Hampton、Michael Harmata
DOI:10.1002/ejoc.201201341
日期:2012.12
Trogers bases (TBs) react with dimethyldioxirane to produce the corresponding N-oxides in excellent yields. Upon treatment with acetic anhydride, these N-oxides undergo a Polonovski-type reaction that involves fragmentation and ultimate nitrogen–nitrogen bond formation to form hydrazines. Steric effects are evident in both the oxidation step and in the step involving the activation of the N-oxide, such