Preparation of 1,2-diacyl-2-(t-alkyl)hydrazines

Details Preparation of 1,2-diacyl-2-(t-alkyl)hydrazines Preparation of 1,2-diacyl-2-(t-alkyl)hydrazines

C - Chemistry, Metallurgy

07

C

C07C 243/38 (2006.01) C07C 241/04 (2006.01) C07C 255/66 (2006.01) C07C 309/63 (2006.01) C07C 317/32 (2006.01) C07C 323/48 (2006.01) C07C 327/06 (2006.01) C07C 331/12 (2006.01) C07D 317/68 (2006.01) C07D 319/18 (2006.01) C07F 7/10 (2006.01)

Patent

CA 2129770

This invention relates to a process for preparing 1,2-diacyl-2-(t- alkyl)hydrazines. More particularly, this invention relates to a process for preparing the aforesaid diacylhydrazine whereby an ester or a mixture of an ester and water is employed as the solvent in a process wherein an aromatic acid chloride is reacted in a first step with a t-alkylhydrazine or a corresponding acid addition salt of a t- alkylhydrazine such as the hydrochloride salt or the like in the presence of a base to afford a 1-acyl-2-t-alkylhydrazine followed by a second step wherein another aromatic acid chloride is reacted with the aforesaid monoacylhydrazine in the presence of a base to afford the desired 1,2-diacyl-2-(t-alkyl)hydrazine. Such compounds are known to have excellent insecticidal activity against insects of the orders Lepidoptera and Coleoptera. The invention also relates to certain 1,2-diacyl-2-(t-alkyl)hydrazines which are prepared in accordance with the process of this invention.

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