A simple, efficient, and general method has been developed for the one-pot synthesis of α-aminophosphonic esters, under solvent-free conditions, with the use of CaCl 2 as a Lewis base catalyst. The esters were obtained under mild conditions and in high yield (80 to 96%) and purity. They were synthesized by the reaction of diethyl phosphite with a mixture of aldehydes and amines, in the presence of
已经开发了一种简单、有效和通用的方法,用于在无溶剂条件下使用 CaCl 2 作为路易斯碱催化剂一锅法合成 α-
氨基膦酸酯。在温和条件下以高产率(80-96%)和纯度获得酯。它们是通过
亚磷酸二乙酯与醛和胺的混合物,在 CaCl 2 存在下,在无溶剂条件下反应合成的。该协议的主要优点是:产量高,方法便宜,使用无毒催化剂,最后温和无溶剂条件。