申请人:DSM N.V.
公开号:EP0839787A1
公开(公告)日:1998-05-06
Process for the preparation of an aldehyde through hydroformylation of an unsaturated organic compound in the presence of a catalyst system comprising rhodium or iridium and a multidentate organic phosphite ligand, wherein a monodentate phosphine is present.
The process according to the invention can advantageously be carried out for the preparation of methyl-5-formylvalerate, which is an intermediate product in the preparation of ε-caprolactam or adipic acid, which are in turn raw materials for the preparation of nylon-6 and nylon-6,6, respectively.
在由铑或铱和多价有机亚磷酸酯配体组成的催化剂体系存在下,通过不饱和有机化合物的氢甲酰化制备醛的工艺,其中存在单价膦。
5-甲酰基戊酸甲酯是制备ε-己内酰胺或己二酸的中间产物,而ε-己内酰胺或己二酸又分别是制备尼龙-6 和尼龙-6,6 的原料。