One-Pot Synthesis of Pyrazolyl-Containing α-Aminophosphonates
作者:Si-Yao Lang、Fan Yue、Ling-Hua Cao
DOI:10.1080/10426507.2011.625510
日期:2012.4.1
Abstract A series of novel pyrazolyl-containing α-aminophosphonates were synthesized by one-pot reaction from 4-formylpyrazole, substituted aromatic amines, and dialkylphosphites. The synthesized compounds were characterized by elemental analysis, 1H NMR, and IR spectroscopy. Single-crystal X-ray diffraction data of compounds 4a and 5b were obtained, and some of these compounds showed inhibitory effect
A simple and efficient method for the synthesis of α-amino phosphonates has been accomplished from aromatic aldehydes, diethylphosphite, and aromatic (or) aliphatic amines using potassium hydrogen sulfate as a catalyst under solvent free condition at ambient temperature and these compounds are characterized by 31P NMR with reference to H3PO4.
在室温下无溶剂的条件下,使用硫酸氢钾作为催化剂,由芳族醛,亚磷酸二乙酯和芳族(或)脂族胺合成了一种简单高效的α-氨基膦酸酯合成方法,这些化合物的特征在于关于H 3 PO 4的31 P NMR 。