Silica Sulfuric Acid as a Recyclable Catalyst for a One-Pot Synthesis of α-Aminophosphonates in Solvent-Free Conditions
作者:Jing-Jun Yang、Jin-Ning Dang、Yu-Wei Chang
DOI:10.2174/157017809789124830
日期:2009.9.1
A simple and efficient method has been developed for the synthesis of α-aminophosphonates by a one-pot three-component condensation of aldehydes, amines and diethyl phosphite in the presence of a catalytic amount of silicasulfuricacidunder solvent-free reaction conditions. The major advantages of the present method are good yields, inexpensive, ecofriendly and reusable catalyst, short reaction times
TiO2 as a new and reusable catalyst for one-pot three-component syntheses of α-aminophosphonates in solvent-free conditions
作者:Mona Hosseini-Sarvari
DOI:10.1016/j.tet.2008.04.016
日期:2008.6
the synthesis of α-aminophosphonates. A three-componentreaction of an amine, an aldehyde or a ketone and a dialkyl phosphite (Kabachnik–Fieldsreaction) took place in one-pot, under solvent-free conditions to afford the corresponding α-aminophosphonates in high yields and short times. The TiO2 catalyzed α-aminophosphonate synthesis in the present study perhaps represents a true three-component reaction