Zirconium(IV) Compounds As Efficient Catalysts for Synthesis of α-Aminophosphonates
作者:Srikant Bhagat、Asit K. Chakraborti
DOI:10.1021/jo8009006
日期:2008.8.1
Zirconium(IV) compounds are reported as excellent catalysts for a three-component one-pot reaction of an amine, an aldehyde or a ketone, and a di/trialkyl/aryl phosphite to form α-aminophosphonates under solvent-free conditions at rt. Among the various zirconiumcompounds, ZrOCl2·8H2O and ZrO(ClO4)2·6H2O were most effective. The reactions were faster with dialkyl/diaryl phosphites than with trialkyl/triaryl