A process for the preparation of an insecticidally active compound such as ##STR1## comprising reacting a benzoyl-phosphonic acid ester of the formula ##STR2## with an alkali metal cyanide in aqueous acetic acid to produce the new compound ##STR3## which is reacted with an alkali or alkline earth metal salt of the formula ##STR4##
一种制备具有杀虫活性的化合物的方法,例如##STR1##,包括在
水合
乙酸中将公式##STR2##的苯甲酰-
膦酸酯与碱
金属
氰化物反应,以产生新化合物##STR3##,然后将其与公式##STR4##的碱
金属或碱土
金属盐反应。