Process for the preparation of monochloromethyl ketones

Details Process for the preparation of monochloromethyl ketones Process for the preparation of monochloromethyl ketones

C - Chemistry, Metallurgy

07

C

260/582, 260/584

C07C 49/00 (2006.01) C07C 17/25 (2006.01) C07C 17/26 (2006.01) C07C 43/225 (2006.01) C07C 45/51 (2006.01) C07C 49/16 (2006.01) C07C 49/223 (2006.01) C07C 49/227 (2006.01) C07C 49/255 (2006.01) C07C 49/327 (2006.01) C07C 69/757 (2006.01)

Patent

CA 1169434

ABSTRACT A process for the production of a monochloromethyl ketone of the formula Image in which R1, R2 and R3 each independently is a hydrogen atom or an optionally substituted alkyl, alkenyl, alkinyl or aryl radical, or R1 and R2 together with the carbon atom to which they are attached form an optionally sub- stituted carbocyclic ring, comprising reacting a 1,1-dichloroalkene of the formula Image with a phenolate of the formula Image in which R4 each independently is a halogen atom, a nitro group, or an optionally substituted alkyl, alkoxy or aryl radical, n is 0, 1, 2 or 3, and M is one equivalent of an alkali metal ion or alkaline earth metal ion, thereby to obtain a phenyl ether intermediate, ant then subjecting the phenyl ether intermediate to an acid hydrolysis. The products are useful as intermediates in the synthesis of fungicides.

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