Phenylphosphonic acid is an efficient, friendly and reusable heterogeneous catalyst for the synthesis of α-aminophosphonates through a ‘one-pot’ three-component reaction of amines, carbonyl compounds and dialkyl phosphites undersolvent-freeconditions. This methodology illustrates a very simple procedure, with wide applicability, extending the scope to aliphatic and aromatic amines, aliphatic and
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
An Extremely Efficient Three-Component Reaction of Aldehydes/Ketones, Amines, and Phosphites (Kabachnik−Fields Reaction) for the Synthesis of α-Aminophosphonates Catalyzed by Magnesium Perchlorate
作者:Srikant Bhagat、Asit K. Chakraborti
DOI:10.1021/jo062140i
日期:2007.2.1
an extremely efficient catalyst for the synthesis of α-aminophosphonates. A three-component reaction (3-CR) of an amine, an aldehyde or a ketone, and a di-/trialkyl phosphite (Kabachnik−Fields reaction) took place in one pot under solvent-free conditions to afford the corresponding α-aminophosphonates in high yields and short times. The use of solvent retards the rate of the reaction and requires a
One-Pot Synthesis of α-Aminophosphonates: An Inexpensive Approach
作者:A. Manjula、B. Vittal Rao、Parvathi Neelakantan
DOI:10.1081/scc-120022468
日期:2003.9.1
Abstract A one-potsynthesis of the α-aminophosphonates from aldehydes and amines using trimethyl phosphite catalyzed by aluminum chloride at ambient temperature is reported. #IICT Communication No. 20412.
Phenylboronic Acid as Efficient and Eco-Friendly Catalyst for the One-Pot, Three-Component Synthesis of α-Aminophosphonates under Solvent-Free Conditions
A simple, mild, and efficient one-pot, three-component synthetic method has been developed for the preparation of α-aminophosphonates using phenylboronic acid as catalyst undersolvent-freeconditions at 50 °C. The process involves the reaction of carbonylcompounds (aldehydes or ketones) with benzylamine and dimethyl phosphite. A wide range of carbonylcompounds are compatible with this reaction,
开发了一种简单、温和、高效的一锅三组分合成方法,以苯基硼酸为催化剂,在 50 °C 无溶剂条件下制备 α-氨基膦酸酯。该过程涉及羰基化合物(醛或酮)与苄胺和亚磷酸二甲酯的反应。广泛的羰基化合物与该反应相容,可在短时间内以中等至极好的收率生产叔和季 α-氨基膦酸酯。