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
Abstract A series of α-aminophosphonate derivatives containing aminophenol moiety have been synthesized and evaluated for their antibacterial activities against two clinical strains Gram-positive and two Gram-negative applying Agar disc diffusion method, Minimal Inhibition Concentration (MIC) and Minimal Bactericidal Concentration (MBC) methods. The chemical structures of the synthesized compounds
An Efficient One-Pot Synthesis of α-Amino Phosphonates Catalyzed by Bismuth Nitrate Pentahydrate
作者:Asish Bhattacharya、Tanpreet Kaur
DOI:10.1055/s-2007-970762
日期:2007.3
A simple, efficient, and environmentally benign method has been developed for the synthesis of α-amino phosphonates through a one-pot reaction of aldehydes with amines and diethyl phosphite in the presence of bismuth nitrate pentahydrate as a catalyst. Some of the major advantages of this protocol are: good yields, the involvement of a less-expensive and non-toxic catalyst, mild and solvent-free reaction conditions and also tolerance towards other functional groups present in the substrates. Eighteen examples are described, highlighting the substrate scope of the reaction.