The present invention provides a hydroformylation process comprising: (1) forming a reaction mixture containing: (a) an olefinic compound, (b) hydrogen, (c) carbon monoxide, (d) a phosphite in which each phosphorus atom is bonded to three oxygen atoms and at least one such oxygen atom is bonded to a carbon atom of an aromatic ring that is adjacent to another carbon atom of said ring having a pendant monovalent group having a steric hindrance at least as great as the steric hindrance of the isopropyl group, (e) a catalytic amount of rhodium, and (f) a Group VIII metal (other than a rhodium) in an amount sufficient to reduce the rhodium-catalyzed decomposition of the phosphite during the hydroformylation process; and (2) maintaining the reaction mixture under conditions at which the olefinic compound reacts with the hydrogen and carbon monoxide to form an aldehyde.
本发明提供了一种加氢甲酰化工艺,包括:(1) 形成一种反应混合物,其中含有(a) 烯烃化合物,(b)
氢气,(c)
一氧化碳,(d)
亚磷酸酯,其中每个
磷原子与三个氧原子键合,且至少一个氧原子与一个芳香环的碳原子键合,该芳香环的碳原子与所述芳香环的另一个碳原子相邻,该芳香环的另一个碳原子上有一个单价基团,该单价基团具有至少与异丙基基团的立体阻碍相同的立体阻碍、(e) 催化量的
铑,以及 (f) VIII 族
金属(
铑除外),其用量足以在氢甲酰化过程中减少
亚磷酸酯在
铑催化下的分解;(2) 将反应混合物保持在烯烃化合物与
氢气和
一氧化碳反应生成醛的条件下。