introverted acid is a cavitand with the carboxylic function directed toward the floor of the cavity. Its reaction with diisopropyl carboodiimide gives a covalent adduct that is either the elusive O-acylisourea or the commonly encountered N-acylurea.
回顾了
羧酸与碳二
亚胺的反应,并提出了“内向”
羧酸作为沿反应途径捕获反应中间体的方法。内倾酸是一种空
配体,其羧基官能团指向空腔底部。它与
二异丙基碳二
亚胺反应生成共价加合物,该加合物要么是难以捉摸的 O-酰基异
脲,要么是常见的 N-酰基
脲。