Processes for the preparation of 3-alkoxyalkanols useful as solvents for coating materials, photoresists, or the like.
Specifcally,
(1) a process which comprises reacting an α,β-unsaturated aldehyde with an alcohol in the presence of an acidic catalyst and subjecting the obtained product to hydrolysis and hydrogenation successively;
(2) a process which comprises subjecting a reaction mixture obtained by the reaction of an α,β-unsaturated aldehyde with an alcohol and comprising the corresponding 1,1,3-trialkoxyalkane and 3-alkoxyalkanal to hydrolysis and hydrogenation at the same time;
(3) a process which comprises recovering a 3-alkoxyalkanal through distillation as an azeotropic mixture thereof with water from a reaction solution obtained by the reaction of an alcohol with acid-containing acrolein or methacrolein prepared by the oxidation of propylene or isobutylene, and hydrogenating the recovered 3-alkoxyalkanal into the corresponding 3-alkoxyalkanol; and
(4) a process which comprises bringing a gas produced by the oxidation of propylene or isobutylene Into contact with an alcohol, conducting the reaction of the gas with the alcohol to form the corresponding 1,1,3-trialkoxyalkane, and subjecting it to hydrolysis and hydrogenation.
制备用作涂层材料、光刻胶或类似材料溶剂的 3-烷氧基烷醇的工艺。
特别是
(1) 一种工艺,包括在酸性催化剂存在下使α,β-不饱和醛与醇反应,并使得到的产物相继进行
水解和氢化;
(2) 一种工艺,包括将由α,β-不饱和醛与醇反应得到的反应混合物同时进行
水解和氢化,该混合物包括相应的 1,1,3-三烷氧基
烷烃和 3-烷氧基烷醛;
(3) 一种工艺,包括从醇与
丙烯或
异丁烯氧化制备的含酸
丙烯醛或甲基
丙烯醛反 应得到的反应溶液中,通过蒸馏回收 3-烷氧基烷醛作为其与
水的共沸混合物, 并将回收的 3-烷氧基烷醛氢化为相应的 3-烷氧基烷醇;以及
(4) 将
丙烯或
异丁烯氧化产生的气体与醇接触,使气体与醇反应生成相应的 1,1,3-三烷氧基
烷烃,并使其
水解和氢化的工艺。