Process for the preparation of ketoalkynoic acids and use of...

Details Process for the preparation of ketoalkynoic acids and use of... Process for the preparation of ketoalkynoic acids and use of...

C - Chemistry, Metallurgy

07

C

260/480.2, 260/5

C07C 69/74 (2006.01) C07C 59/76 (2006.01) C07C 69/73 (2006.01) C07D 317/16 (2006.01) C07D 317/30 (2006.01)

Patent

CA 1082215

ABSTRACT Reaction of a 2-methyl 2-(alkenyl)-1,3-dioxolane with an .alpha.,.omega.-dihalogenoalkane to obtain a 2-methyl-2-(.omega.-chloro- alkynyl)-dioxolane, conversion of the latter to a corres- ponding nitrile, and hydrolysis of the nitrile to form a ketoalkynoic acid is a novel process for preparing the acid. Use of the process in the synthesis of 2-(substituted)- cyclopentane-1,3,4-triones improves that synthesis.

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