[EN] HYDROFORMYLATION PROCESS FOR PHARMACEUTICAL INTERMEDIATE<br/>[FR] PROCÉDÉ D'HYDROFORMYLATION D'INTERMÉDIAIRES PHARMACEUTIQUES
申请人:DOW GLOBAL TECHNOLOGIES INC
公开号:WO2005110986A1
公开(公告)日:2005-11-24
The invention relates to an improved process for the preparation of an advanced synthetic intermediate of ACE inhibitors. In one aspect, the present invention is based on a novel process for the preparation of an aldehyde of formula (I), wherein (N)PrG is a protected amino group, R is an alkyl or aralkyl group and X1-4 are each independently H or a non-reacting substituent, which comprises hydroformylation of an α-olefin of formula (II), by reaction with syngas (CO/H2) in the presence of, as catalyst, a group VIII transition metal complex of a phosphorus-containing ligand. Aldehyde (I), the product of linear hydroformylation, is formed in preference to aldehyde (III). In another aspect of the invention, α-olefin (II) is a novel composition. The process to convert (II) to (I) enables an efficient manufacturing route to MDL 28,726 and analogues.
该发明涉及一种改进的制备ACE抑制剂高级合成中间体的工艺。在一个方面,本发明基于一种新颖的制备式(I)醛的工艺,其中(N)PrG是保护的氨基团,R是烷基或芳基烷基团,X1-4分别独立地是H或非反应取代基,包括通过与合成气(CO/H2)在磷含配体的第VIII族过渡金属复合物的催化剂存在下,对式(II)的α-烯烃进行水甲醛化。醛(I),线性水甲醛化的产物,优先形成醛(III)。在本发明的另一个方面,α-烯烃(II)是一种新型组合物。将(II)转化为(I)的工艺为MDL 28,726及类似物提供了一条高效的制造途径。