An ultrasoundpromoted easy, efficient, and environment friendly process has been devised for the synthesis of α-aminophosphonates within seconds through a one-pot three-component condensation of the aldehydes, amines, and triethylphosphite. The desired products were obtained in excellent yields and in high purity under solvent-free and catalyst-free conditions. Study with various aldehydes and amines
choline-based ionicliquid [Ch-OSO3H] was prepared and used as a novel catalyst for the synthesis of α-aminophosphonates via a one-potthree-componentreaction with aldehydes, amines, and triethyl phosphite/diethyl phosphite at room temperature under solvent-free conditions or in aqueous media. The reaction was completed in short times and products could be simply separated from the reaction mixture in
A Green Approach to the Synthesis of α-Amino Phosphonate in Water Medium: Carbene Insertion into the N–H Bond by Cu(I) Catalyst
作者:Kankanala Ramakrishna、Jisha Mary Thomas、Chinnappan Sivasankar
DOI:10.1021/acs.joc.6b01940
日期:2016.10.21
achieved via phosphonate substituted carbeneinsertion into the N–H bond of aniline catalyzed by readily available copper salt under mild reaction conditions in water. In order to find an efficient catalyst for carbeneinsertion reaction in neat water, a large number of transition metal catalysts were screened, and we found that the [Cu(CH3CN)4]ClO4 was the best catalyst under employed reaction conditions
been developed for the synthesis of a series of α-aminonitriles via the one-pot three-component Strecker reactions between various aldehydes, amines and trimethylsilyl cyanide using a catalytic amount of mandelic acid as a naturally occurring, low-cost, efficient organo-catalyst undersolvent-freeconditions at room temperature. Under the same optimized conditionssynthesis of α-aminophosphonates were
A Highly Efficient Bismuth Salts-Catalyzed Route for the Synthesis of α-Aminophosphonates
作者:Antara Banik、Sahil Batta、Debasish Bandyopadhyay、Bimal K. Banik
DOI:10.3390/molecules15118205
日期:——
A convenientsynthesis of different types of α-aminophosphonates via one-pot solvent-free three component reactions of aldehydes, amines and phosphites catalyzed by bismuth salts has been investigated. Bismuth triflate is found to be the most effective catalyst for this reaction.