Patent ID: 6486359
Filing Date: 2002-11-26
Classification: B01J,C07C,C07F

Abstract:
A catalyst comprising at least one complex of a metal of group VIII with at least one uni-, bi- or multidentate phosphinite ligand of the formula I â€ƒin which A is a 2,2â€²-biphenylylene or 2,2â€²-binaphthylylene radical, which may have 1, 2 or 3 substituents selected from alkyl, alkoxy or halogen, R1 is alkyl, aryl or hetaryl, each of which optionally has one, two or three substituents selected from alkyl, cycloalkyl, aryl, alkoxy, cycloalkyloxy, aryloxy, halogen, trifluoromethyl, nitro, cyano, carboxyl, carboxylate, acyl, sulfonyl, NE1E2 and alkylene-NE1E2, where E1 and E2 are identical or different and are selected from alkyl, cycloalkyl and aryl; or is a radical of the formula II â€”Xâ€”Yâ€ƒâ€ƒ(II) in whichX is either C2-C8-alkylene bridge which is optionally interrupted by SiraRb, N, NRc, O or S, in which Ra and Rb are hydrogen, alkyl, alkoxy, halogen, trifluoromethyl, nitro or cyano, and Rc is hydrogen, alkyl or aryl, where aryl is optionally mono- or disubstituted by alkyl, alkoxy, halogen, trifluoromethyl, nitro or cyano, optionally has one, two or three double bonds and/or is optionally fused once, twice or three times to aryl and/or hetaryl, where the aryl or hetaryl groups have, independently of one another, optionally one, two, three or four substituents selected from alkyl, cycloalkyl, aryl, alkoxy, cycloalkyloxy, aryloxy, halogen, trifluoromethyl, nitro, cyano, acyl, carboxyl, carboxylate, NE1E2 and alkylene-NE1E2, where E1 and E2 have the meanings indicated previously, and adjacent fused rings are optionally connected by SiRaRb, N, NRc, O or S or by a C1-C6-alkylene bridge which optionally additionally carries a group selected from SiRaRb, N, NRc, O or S, in which Ra, Rb and Rc are as defined above; or â€ƒan optionally substituted metallocene bridge; and Y is a radical of the formula III â€ƒin which D has the meanings indicated previously for A, and m and n are, independently of one another, 0 or 1, or a salt thereof.