Process for the preparation of unsaturated ketones

Details Process for the preparation of unsaturated ketones Process for the preparation of unsaturated ketones

C - Chemistry, Metallurgy

07

C

260/480.2, 260/5

C07C 45/49 (2006.01) C07C 49/20 (2006.01)

Patent

CA 1301192

63293-2694 A B S T R A C T PROCESS FOR THE PREPARATION OF UNSATURATED KETONES Process for the preparation of compounds of the general formula: R-C?C-C(O)-C(R)?CH2 (I) R representing an H atom or an optionally substituted hydrocarbyl group, by reacting a compound R-C=CH with CO in the presence of a Pd(II) compound, an organic phosphine and a protonic acid having a PKa below 3Ø Compounds of formula I in which R represents an optionally substituted hydrocarbyl group are novel. Acetylenically and ethylenically unsaturated ketones may be used as starting materials for the preparation of jasmone-type compounds and of polymers.

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