Process for the preparation of alkylidene diesters
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0219906A2
公开(公告)日:1987-04-29
Process for the preparation of an alkylidene diester by reacting an ethylenically unsaturated compound with carbon monoxide, a carboxylic acid and an aldehyde in the presence of a catalytic system prepared by combining palladium or a palladium compound, at least 5 mol of a phosphine having three aryl groups, per gram atom of palladium, and with an acid with a pK. < 2 (at 18 'C in aqueous solution), except hydrohalogenic and carboxylic acids, as promoter.