Patent ID: 6051741
Filing Date: 2000-04-18
Classification: B01J,C07C,C07F

Abstract:
A process for preparing .gamma.,.delta.-unsaturated ketones of the formula I comprising: ##STR12## reacting an allyl alcohol of the formula II ##STR13## in which R.sup.1 is H or a saturated or unsaturated branched hydrocarbon radical having 1 to 20 carbon atoms, with diketene or an alkyl acetoacetate of the formula III ##STR14## in which R.sup.2 is alkyl having 1 to 5 carbon atoms, in an unmodified or modified Carroll reaction in the presence of an aluminum catalyst of the formula V ##STR15## in which R.sup.3 is an alkyl group having 1-5 carbon atoms;R.sup.4 is an alkyl group having 3 to 10 carbon atoms; andR.sup.4 is an alkyl group having 1 to 10 carbon atoms,where the radicals R.sup.3, R.sup.4 and R.sup.5 can not all have the same meaning.