Patent ID: 9593063
Date: 2017-03-14
CPC Classifications: C07C

Claim:
1. A method for producing a ketone of general formula (I), where R1, R2, R3, R4 and R5, independently of one another, can each denote hydrogen, —NO R6 and R7, independently of one another, denote a secondary, tertiary or quaternary C-atom, and Q denotes an R6 and R7 bridging substituted or unsubstituted group having 1 to 10 carbon atoms, characterized in that a) a ketone of general formula (II) where the groups R6, R7 and Q are identical to general formula (I), in the presence of a phosphonate of general formula (III), where R8 and R9, independently of one another, each denote a linear or branched, substituted or unsubstituted alkoxy group having 1 to 15 carbon atoms, is reacted with a benzonitrile of general formula (IV), where the groups R1, R2, R3, R4 and R5 are identical to general formula (I), and subsequently b) the alpha,beta-unsaturated ketone of general formula (V) obtained in step a), where the groups R1 to R7 and Q are identical to general formula (I), is selectively hydrogenated to yield a ketone of general formula (I).