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
A novel hydrophobic copper complex supported on γ-Fe<sub>2</sub>
O<sub>3</sub>
as a magnetically heterogeneous catalyst for one-pot three-component synthesis of α-aminophosphonates
作者:Sara Sobhani、Fatemeh Khakzad
DOI:10.1002/aoc.3877
日期:2017.12
extremely well for the synthesis of α‐aminophosphonates even up to five subsequent trails without significant loss of its catalytic activity or copper leaching. The TEM image and FT‐IR spectrum of the catalyst after five times recovery showed that the structure of the catalyst was stable under the reaction conditions with no change being observed. The strong magnetic properties of the reused catalyst were
Highly Efficient One-Pot Synthesis of<font>α</font>-Aminophosphonates Catalyzed by Ytterbium Triflate in Water
作者:MingGui Shen、ShiBin Shang、ZhanQian Song、Dan Wang、XiaoPing Rao、Hong Gao、Juan Wang
DOI:10.1080/00397911.2013.806669
日期:2014.2
Abstract A facile one-pot, three-component synthesis of α -aminophosphonates catalyzed by ytterbiumtriflate [Yb(OTf)3] in water using polyoxyethanyl α -tocopheryl sebacate (PTS) as amphiphile has been developed. The catalytic system could be readily recycled and reused several times without significant loss in its activity. GRAPHICAL ABSTRACT
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
Metal Triflate-Catalyzed One-Pot Synthesis of α-Aminophosphonates from Carbonyl Compounds in the Absence of Solvent
作者:Habib Firouzabadi、Nasser Iranpoor、Sara Sobhani
DOI:10.1055/s-2004-831251
日期:——
A simple and general method has been developed for one-pot three-component synthesis of α-aminophosphonates catalyzed by several metal triflates [M(OTf)n, M = Li, Mg, Al, Cu, Ce] in the absence of solvent in good to high yields.
本研究开发了一种简单而通用的方法,用于在无溶剂条件下,在几种金属三氟化物[M(OTf)n, M = Li, Mg, Al, Cu, Ce]催化下,一锅三组分合成δ-氨基膦酸盐,产率从好到高。