Patent ID: 6194627
Filing Date: 2001-02-27
Classification: B01J,C07B,C07C

Abstract:
A process for preparing aromatic olefins of the formula (I) ##STR8##whereinR.sup.1a to R.sup.5a are, independently of one another, hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, C.sub.1 -C.sub.8 -acyloxy, O-phenyl, phenyl, fluorine, chlorine, bromine, OH, NO.sub.2, OSO.sub.2 CF.sub.3, CN, COOH, CHO, SO.sub.3 H, SO.sub.2 R, SOR, NH.sub.2, NH--C.sub.1 -C.sub.8 -alkyl, N(C.sub.1 -C.sub.8 -alkyl).sub.2, CHal.sub.3, NHCO--C.sub.1 -C.sub.4 -alkyl, N--C.sub.1 -C.sub.4 -alkyl-CO--C.sub.1 -C.sub.4 -alkyl, COO--C.sub.1 -C.sub.8 -alkyl, CONH.sub.2, CO--C.sub.1 -C.sub.8 -alkyl, NHCOH, NCOO--C.sub.1 -C.sub.4 -alkyl, CO-phenyl, COO-phenyl, CHCH--CO.sub.2 --C.sub.1 -C.sub.8 -alkyl, CHCHCO.sub.2 H, PO(phenyl).sub.2, PO(C.sub.1 -C.sub.4 -alkyl).sub.2, OSO.sub.2 -phenyl or OSO.sub.2 CH.sub.3, wherein one of the radicals R.sup.1a to R.sup.5a can also be ##STR9##whereinR.sup.6a is hydrogen, C.sub.1 -C.sub.8 -alkyl, phenyl, O--C.sub.1 -C.sub.8 -alkyl or fluorines; andR.sup.7a and R.sup.8a are, independently of one another, hydrogen, CN, CO.sub.2 H, CO.sub.2 --C.sub.1 -C.sub.8 -alkyl, CONH.sub.2, CONH--C.sub.1 -C.sub.4 -alkyl, CON(C.sub.1 -C.sub.4 -alkyl).sub.2, fluorine, CO.sub.2 -phenyl, C.sub.1 -C.sub.8 -phenyl, PO(phenyl).sub.2, PO(C.sub.1 -C.sub.4 -alkyl).sub.2, CO-phenyl, CO--C.sub.1 -C.sub.4 -alkyl, O--C.sub.1 -C.sub.4 -alkyl, NH--C.sub.1 -C.sub.4 -alkyl, PO.sub.3 H, SO.sub.3 H, SO.sub.3 --C.sub.1 -C.sub.4 -alkyl, SO.sub.2 --C.sub.1 -C.sub.4 -alkyl, O-phenyl or C.sub.1 -C.sub.8 -alkyl,by reacting haloaromatics of the formula (II) ##STR10##with olefins of the formula (III) ##STR11##wherein R.sup.1a to R.sup.8a are as defined above and X is as defined for R.sup.1a to R.sup.5a,wherein a palladium compound of the formula (IV) ##STR12##whereinR.sup.1, R.sup.2 are, independently of one another, hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.3 -C.sub.12 -cycloalkyl, C.sub.1 -C.sub.4 -alkoxy, fluorine, N(C.sub.1 -C.sub.4 -alkyl).sub.2, CO.sub.2 --C.sub.1 -C.sub.4 -alkyl, OCO--C.sub.1 -C.sub.4 -alkyl or aryl; andR.sup.3, R.sup.4, R.sup.5, R.sup.6 are, independently of one another, C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.12 -cycloalkyl or aryl;or wherein R.sup.1 and R.sup.2, R.sup.1 or R.sup.2 and R.sup.3 or R.sup.4, R.sup.3 and R.sup.4, R.sup.3 or R.sup.4 and R.sup.5 or R.sup.6, R.sup.5 and R.sup.6 together form an aliphatic ring having from 4 to 10 carbon atoms,or wherein R.sup.5 and R.sup.6, R.sup.3 or R.sup.4 and R.sup.5 or R.sup.6 together form an aromatic ring having from 5 to 9 carbon atoms, andY is an anion of an inorganic or organic acid, is used as catalyst.