Silica gel supported aluminum chloride (SiO2-AlCl3) and cross-linked polystyrene-supported aluminum chloride (PS-AlCl3) are environment- friendly heterogeneouscatalysts for the condensation of amines and aldehydes with diethyl phosphite to afford α-aminophosphonates. These solid acid catalysts are stable (as bench top catalysts) and can be easily recovered and reused without appreciable change in
amine and phosphite compounds to form corresponding α-aminophosphonates in a one-pot, three-component reaction. Selected α-aminophosphonates were entered into a biological assay test and were studied by docking methods, using Autodock 3.0. The results showed that the reactions were carried out mildly and eco-friendly to form α-aminophosphonates in high yields. Some were found to have cytotoxic activity
Synthesis of<i>α</i>-Aminophosphonates Using Polystyrene Supported Al(OTf)<sub>3</sub>as a Heterogeneous Catalyst
作者:Kaveh Parvanak Boroujeni
DOI:10.1080/15533174.2010.538029
日期:2011.2.24
A mild and efficient method has been devised for the preparation of α-aminophosphonates from three component condensation of an aldehyde, an amine, and diethyl phosphite in the presence of catalytic amounts of cross-linked polystyrene supported aluminium triflate (Ps-Al(OTf)3) undersolvent-freeconditions in good to excellent yields. The catalyst is stable (as a bench top catalyst) and can be easily
Synthesis of α-Aminophosphonates via Phosphonylation of an Aryne–Imine Adduct
作者:Taehyun Lim、Byeong Moon Kim
DOI:10.1021/acs.joc.0c01410
日期:2020.10.16
Multicomponent phosphonylation is accomplished upon the reaction of an imine with an aryne generated in situ in the presence of a dialkyl phosphite. This transition-metal-free protocol shows a broad substrate scope, providing a variety of α-aminophosphonates in moderate to good yields. A plausible mechanism for the reaction is proposed based on a deuterium exchange experiment.