selectively catalyze both mono- and bis-N-alkylation through the coupling of simple alcohols with amines, yielding a range of secondary and tertiary amines in good to excellent isolated yields. The reaction can be applied to benzyl alcohol with optically active 1-phenylethan-1-amines, and secondary amines were isolated in quantitative yields with an excellent enantiomeric excess (ee > 94%). Selectivity
不需要碱或其他
添加剂,Co 2 Rh 2 / C可以通过简单的醇与胺的偶联选择性催化单-和双-N-烷基化,生成一系列仲胺和叔胺,分离收率好至极好。该反应可与具有光学活性的1-
苯基乙-1-胺一起用于
苄醇,并以定量收率分离仲胺,其对映体过量极佳(ee> 94%)。通过改变反应温度和所用
催化剂的量来实现选择性。该催化体系具有许多优点,包括环保和简单的后处理程序。
催化剂可以成功回收并
重复使用十次,而活性没有任何重大损失。