[EN] PROCESS FOR THE PREPARATION OF 3-METHYLENE-?-BUTYROLACTONE<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION DE 3-MÉTHYLÈNE-G-BUTYROLACTONE
申请人:DSM IP ASSETS BV
公开号:WO2012116977A1
公开(公告)日:2012-09-07
The invention relates to a process for the preparation of 3-methylene-γ-butyrolactone (Z), the process comprising a hydroformylation step wherein 1,4-butene-diol (X) or its ester derivative cis-1,4-diacetoxy butene (Y) is subjected to H2 gas and CO gas in the presence of a hydroformylation catalyst, thereby forming an intermediate product comprising a mixture of compounds containing an aldehyde group or a hemiacetal, and an oxidation step wherein the intermediate product or hydrolyzed derivative thereof is oxidized by an oxidation agent thereby forming Z.
本发明涉及一种制备3-亚甲基-γ-丁内酯(Z)的方法,该方法包括水合甲酰化步骤和氧化步骤。其中,在存在水合甲酰化催化剂的条件下,将1,4-丁二醇(X)或其酯衍生物顺式-1,4-二乙酰氧基丁烯(Y)与H2气体和CO气体反应,从而形成包含醛基或半缩醛的化合物混合物的中间产物;然后,在氧化剂的作用下,将中间产物或其水解衍生物氧化,从而形成Z。