申请人:Mitsubishi Chemical Corporation
公开号:EP0605735A1
公开(公告)日:1994-07-13
A process for producing an alkadienol which comprises reacting a conjugated alkadiene with water in a reaction solvent in the presence of a palladium catalyst, separating the solvent from the resultant reaction mixture by distilling the mixture under the condition wherein the temperature of the bottom oil in a distillation column is 120 °C or below while directly feeding hot water and/or steam as the heat-transfer medium to the column, and subjecting the bottom to phase separation. This process causes neither the decomposition and/or polymerization of the formed alkadienol nor the metallation of the palladium catalyst, and hence serves to inhibit the loss of the alkadienol and the catalyst and provide the objective alkadienol in a high yield.
一种生产烷二烯醇的工艺,包括在钯催化剂存在下,在反应溶剂中使共轭烷二烯与水反应,在蒸馏塔中底油温度为120℃或以下的条件下,通过蒸馏混合物,将溶剂从生成的反应混合物中分离出来,同时将热水和/或蒸汽作为传热介质直接送入蒸馏塔,并使底部进行相分离。该工艺既不会导致已形成的烷二烯醇分解和/或聚合,也不会导致钯催化剂金属化,因此可抑制烷二烯醇和催化剂的损失,并以高产率提供目标烷二烯醇。