申请人:Celanese GmbH
公开号:US06288288B1
公开(公告)日:2001-09-11
A process for preparing saturated alcohols comprising effecting an aldol condensation of alkyl methyl ketones of 6 to 8 carbon atoms which are branched at the &bgr;-carbon atom with aldehydes of 4 to 15 carbon atoms which are branched at the &agr;-carbon atom to form &agr;,&bgr;-unsaturated ketones and subsequent hydrogenation of the &agr;,&bgr;-unsaturated ketones to obtain alcohols, wherein the aldol condensation is carried out at a temperature of 60 to 130° C. in the presence of a 30-55% strength aqueous solution of an alkali metal hydroxide resulting in very low by-product formation.
一种制备饱和醇的方法,包括通过使6至8个碳原子的侧链位于β-碳原子的烷基甲基酮与4至15个碳原子的侧链位于α-碳原子的醛进行醛缩反应,形成α,β-不饱和酮,然后对α,β-不饱和酮进行加氢以获得醇,其中醛缩反应在60至130°C的温度下,在30-55%浓度的碱金属氢氧化物水溶液存在下进行,从而减少副产物的形成。