Process for the preparation of 4-(3-methyl-2-butenyl)- 1,...

Details Process for the preparation of 4-(3-methyl-2-butenyl)- 1,... Process for the preparation of 4-(3-methyl-2-butenyl)- 1,...

C - Chemistry, Metallurgy

07

D

260/315.5

C07D 231/34 (2006.01)

Patent

CA 1179354

ABSTRACT OF THE DISCLOSURE New process for the preparation of 4-(3-methyl-2-butenyl)-1,2-diphenyl- 3,5-dioxopyrazolidine (Feprazone) Image which comprises reacting 3-methyl-2-butenyl acetate with an alkali metal salt of1,2-diphenyl-3,5-dioxopyrazolidine in the presence of a catalyst, preferably a palladium complex, and a ligand.

414428

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