Catalytic guanylation of aliphatic, aromatic, heterocyclic primary and secondary amines using nanocrystalline zinc(II) oxide
作者:M. Lakshmi Kantam、S. Priyadarshini、P.J. Amal Joseph、P. Srinivas、A. Vinu、K.J. Klabunde、Yuta Nishina
DOI:10.1016/j.tet.2012.05.044
日期:2012.7
to be a highly efficient heterogeneous catalyst for the guanylation of amines with various carbodiimides to afford N,N′,N″-trisubstituted guanidines in excellent yields. Structurally divergent aliphatic, aromatic, heterocyclic primary and secondary amines were converted to the corresponding N,N′,N″-trisubstituted guanidines using optimal conditions. The catalyst was easy to handle even under atmospheric
发现纳米晶ZnO是一种高效的非均相催化剂,用于胺与各种碳二亚胺的胍基化,以优异的产率提供N,N ',N ''-三取代的胍。使用最佳条件,将结构上不同的脂族,芳族,杂环伯和仲胺转化为相应的N,N ',N ''-三取代胍。该催化剂甚至在大气条件下也易于处理,并且可以容易地通过离心回收并以恒定的活性重复使用五个循环。