申请人:Kuraray Company, Limited
公开号:US04417079A1
公开(公告)日:1983-11-22
n-Octanol is obtained by (i) reacting butadiene with water in a solution containing water, a carbonate and/or bicarbonate salt of a monodentate tertiary amine, and sulpholane in the presence of a palladium compound and a hydrophilic monodentate phosphine, to form 2,7-octadien-1-ol; (ii) extracting 2,7-octadien-1-ol from at least part of the reaction mixture obtained in step (i) with a saturated aliphatic hydrocarbon, a monoolefinic hydrocarbon or an alicyclic hydrocarbon, and recycling the extraction residue to the 2,7-octadien-1-ol synthesis step (i); (iii) subjecting the extract layer containing 2,7-octadien-1-ol as obtained in step (ii) to distillation to distill off a large proportion of the extracting solvent therefrom, followed by distillation in the presence of water, whereby the extracting solvent remaining is distilled off in the form of an azeotropic mixture with water, to obtain a distillation residue; (iv) recovering 2,7-octadien-1-ol from the distillation residue obtained in step (iii) by distillation; (v) hydrogenating the 2,7-octadien-1-ol obtained in step (iv) in the presence of a hydrogenation catalyst to obtain n-octanol; and (iv) recovering n-octanol from the hydrogenation reaction mixture by distillation.
n-辛醇的制备方法如下:(i)将丁二烯与水在含有水、单齿三级胺的碳酸盐和/或氢碳酸盐、硫代磷酰胺和钯化合物以及亲水性单齿膦存在下反应,生成2,7-辛二烯-1-醇;(ii)用饱和脂肪烃、单烯烃或脂环烃从步骤(i)中至少一部分反应混合物中提取2,7-辛二烯-1-醇,并将提取残渣回收至步骤(i)的2,7-辛二烯-1-醇合成步骤中;(iii)将含有2,7-辛二烯-1-醇的提取层在蒸馏中分离提取溶剂,然后在水的存在下进行蒸馏,从而以水共沸的形式蒸馏残留的提取溶剂,得到蒸馏残渣;(iv)通过蒸馏从步骤(iii)中得到的蒸馏残渣中回收2,7-辛二烯-1-醇;(v)在氢化催化剂存在下将步骤(iv)中得到的2,7-辛二烯-1-醇加氢,得到n-辛醇;(vi)通过蒸馏从氢化反应混合物中回收n-辛醇。