Patent ID: 6348621
Filing Date: 2002-02-19
Classification: B01J,C07C,C07F

Abstract:
A process for the carbonylation of ethylene which process comprises reacting ethylene with carbon monoxide in the presence of water or organic hydroxyl groups and of a catalyst system, wherein the catalyst system is obtainable by combining:(a) a metal of Group VIII or a compound thereof; and (b) a bidentate phosphine of general formula (1) â€ƒwherein R0 is a tertiary carbon atom, each of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 and R12 is independently a pendant optionally substituted organic group which carries a carbon atom through which the group is linked to the respective R0; each of L1 and L2 is independently a linking group selected from an optionally substituted alkylene chain connecting the respective phosphorus atom to the group X; and X is a bridging group comprising an optionally substituted aryl moiety to which the phosphorus atoms are linked on available adjacent carbon atoms.