Cobalt–Rhodium Heterobimetallic Nanoparticle-Catalyzed N-Alkylation of Amines with Alcohols to Secondary and Tertiary Amines
作者:Hyunho Chung、Young Keun Chung
DOI:10.1021/acs.joc.8b01109
日期:2018.8.3
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。