Patent ID: 8378147
Filing Date: 2013-02-19
Classification: B01J,C07C

Abstract:
1. A process for producing a 2-alkyl-2-cycloalken-1-one represented by formula (2), comprising: (a): activating a palladium and/or platinum catalyst in an atmosphere comprising a hydrogen gas, in a reaction system, to obtain an activated palladium and/or platinum catalyst; (b): replacing said hydrogen gas in said atmosphere for said activating of said palladium and/or platinum catalyst in step (a), with an inert gas to remove hydrogen gas from said reaction system; and (c): contacting a 2-alkylidene cycloalkanone represented by formula (1) with said activated palladium and/or platinum catalyst in said reaction system from which hydrogen has been removed, wherein m is an integer of 0 to 3; n is an integer of 1 or 2; R 1 and R 2 are each independently a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, with the proviso that R 1 and R 2 together with the carbon atom to which they are bonded may form a cyclopentane ring or a cyclohexane ring; and each R 3 is independently an alkyl group having 1 to 5 carbon atoms which may be substituted for any of hydrogen atoms bonded to the alicyclic structure; and wherein m, n, R 1 , R 2 and R 3 are the same as defined above.