| 摘要 |
<p>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 pKa < 2 (at 18 DEG C in aqueous solution), except hydrohalogenic and carboxylic acids, as promoter.</p> |
