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 secondaryamines were converted to the corresponding N,N′,N″-trisubstituted guanidines using optimal conditions. The catalyst was easy to handle even under atmospheric