| 摘要 |
<p>Process for the preparation of diesters of hexene-1,6-dioic acid. …<??>More specifically, a process for the preparation of diesters of 3-hexene-1,6-dioic acid by reaction of carbon monoxide and of an alcohol with at least one butene disubstituted by acyloxy groups in the presence of a palladium-based catalyst, characterised in that the reaction is also conducted in the presence of a quaternary onium halide of an element of group VB chosen from nitrogen and phosphorus, the said element being tetracoordinated with carbon atoms, it being possible for the nitrogen to be coordinated with two pentavalent phosphorus atoms, the halide anion being chosen from chloride and bromide.</p> |
