Synthesis of β-(3,5-di-t-butyl-4-hydroxyphenyl)-propionyl-hydrazide

di t butyl 4 hydroxyphenyl) propionyl hydrazide is an improtant intermediate product in synthesizing N,N' bis β (3,5 di t butyl 4 hydroxyphenyl) propionyl hydrazine.The compound are obtained by reacting methyl β (3,5 di t butyl 4 hydroxyphenyl)propionate with hydrazine hydrate. The preparation method of the compound has been introduced in U.S. Patent 3773722.But the yield of the product by this method is lower and the product is uneasy to be divided. This experiment improves the method to raise the yield and to cut down the cost.