substitution of an alkoxy groups (SNipso) by amino group were isolated in good yields. The reactions proceed in anhydrous dimethyl sulfoxide solution at room temperature. But when anions of the mono‐substituted ureas containing bulky substituents were used, the first products of the earlier unknown SNAr reactions of alkyl carbamoyl amination were obtained.
研究了
尿素阴离子作为亲核试剂与1,3,7-三氮杂py烯烷氧基衍
生物反应的能力。发现出乎所有人的意料,以良好的产率分离了烷氧基(S N ipso)被
氨基取代的产物。反应在室温下在无
水二甲基亚砜溶液中进行。但是,当使用含有大取代基的单取代
脲的阴离子时,就得到了烷基
氨基甲酰基
氨基化的更早未知的S N Ar反应的第一产物。