N-Alkylation of α-iminophosphonates with Grignard reagents gives α-N-alkylaminophosphonates. A subsequent Horner–Wadsworth–Emmons reaction of the intermediary α-metalated phosphonate takes place with aldehydes to give enamines. The enamine thus prepared reacts with MVK to give a four-component coupling product.
α-
亚胺膦酸酯与
格氏试剂进行N-烷基化反应生成α-N-烷基
氨基膦酸酯。随后,中间产物α-
金属化
膦酸酯经Horner-Wadsworth-Emmons反应与醛反应生成烯胺。所制备的烯胺与MVK反应生成四组分偶联产物。