申请人:Polymer Sciences Corporation
公开号:US04259519A1
公开(公告)日:1981-03-31
Conjugated diolefins (e.g., 1,3-butadiene) are carbonylated by the palladium-catalyzed addition of carbon monoxide and an alcohol of the formula ROH (e.g., benzyl alcohol) whereby polycarboxylic esters are formed in which the pair of double bonds of the conjugated diolefin has been transformed into a moiety having the formula: ##STR1## In the process, the olefin, carbon monoxide, and alcohol are reacted in the presence of a palladium(II) salt, a copper(II) salt, and a base, at certain concentrations and at a pressure and temperature sufficient to effect the carbonylation. The resulting unsaturated diester can be hydrolyzed and hydrogenated or vice versa to obtain the corresponding linear diacid (e.g., adipic acid).
共轭二烯(例如1,3-丁二烯)通过钯催化的一氧化碳和ROH(例如苄醇)加成反应,生成多羧酸酯,其中共轭二烯的一对双键被转化为具有以下结构的基团:##STR1## 在该过程中,烯烃,一氧化碳和醇在钯(II)盐,铜(II)盐和碱的存在下反应,在一定浓度,压力和温度下进行羰基化反应。所得的不饱和二酯可以水解和加氢或反之,以获得相应的线性二酸(例如己二酸)。