A distinct approach for high-yielding synthesis of α-amino phosphonates has been discovered through three-component reaction of nitro compounds, aldehydes, or ketones and dialkyl or trialkylphosphites using indium in dilute aqueous HCl at room temperature. This one-pot conversion consists of the following steps: (i) reduction of nitro compounds to amines, (ii) formation of imines from amines and carbonyl
AbstractAqueous formic acid is used for the synthesis of α-aminophosphonates through Kabachnik–Fields reaction applying aromatic amine, phosphite, and carbonyl compounds. Using formic acid as an efficient and low-cost organocatalyst provides environmental friendly, high yields, low reaction time and mild reaction condition. The isolated products were analyzed by IR, NMR, and mass techniques. Graphical
One-Pot Synthesis of Dialkyl Arylaminomethyl- and (Arylamino)arylmethylphosphonates and Their<i>N</i>-Acylated Derivatives
作者:L. K. Lukanov、A. P. Venkov
DOI:10.1055/s-1992-26083
日期:——
A convenient synthesis of dialkyl arylaminomethyl- and (arylamino) arylmethylphosphonates 3 and their N-acylated derivatives 5 have been developed, starting from azomethines and phosphorus trichloride in the presence of an alcohol.
efficient, and general method has been developed for the one-pot, three-component synthesis of α-aminophosphonates from condensation reaction of trimethyl phosphite, aryl aldehydes and aryl amines in the presence of CoCl 2 ·6H 2 O under solvent-free conditions. Thus α -aminophosphonates were synthesized relatively quickly in good yields at roomtemperature.
Sodium Dihydrogen Phosphate as an Efficient Catalyst for One-Pot, Three-Component Synthesis of <font>α</font>-Aminophosphonates Under Solvent-Free Conditions at Room Temperature
and general method has been developed for the one-pot, three-component synthesis of α-aminophosphonates from a condensation reaction of trimethyl phosphite, aldehydes, and amines in the presence of sodium dihydrogen phosphate under solvent-free conditions. Thus, α-aminophosphonates were synthesized relatively quickly in good yields at roomtemperature.