[EN] PROCESS FOR THE PREPARATION OF 2-ISOPENTYL-2-ISOPROPYL-1,3-DIMETHOXYPROPANE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE 2-ISOPENTYL-2-ISOPROPYL-1,3-DIMÉTHOXYPROPANE
申请人:SABIC GLOBAL TECHNOLOGIES BV
公开号:WO2022078576A1
公开(公告)日:2022-04-21
The present invention relates to a process for the preparation of 2-isopentyl-2-isopropyl-1,3-dimethoxypropane, said process comprising the steps of: i) contacting iso-valderaldehyde with an aqueous solution of a hydroxide base selected from the group consisting of sodium hydroxide (NaOH), potassium hydroxide (KOH) or a combination thereof, said solution having an amount of said hydroxide base of at least 20 % w/v, and (m)ethanol; to form (2Z)-2-isopropyl-5-methyl-2-hexenal; step ii) contacting (2Z)-2-isopropyl-5-methyl-2-hexenal with a reducing system to form 2-isopropyl-5-methylhexanal; step iii) contacting 2-isopropyl-5-methylhexanal with formaldehyde and an inorganic base to form 2-isopentyl-2-isopropylpropane-1,3-diol; and step iv) contacting 2-isopentyl-2-isopropylpropane-1,3-diol with a methylation agent and a base to form 2-isopentyl-2-isopropyl-1,3-dimethoxypropane.
本发明涉及一种制备2-异戊基-2-异丙基-1,3-二甲氧基丙烷的过程,该过程包括以下步骤:i)将异戊醛与氢氧化钠(NaOH)、氢氧化钾(KOH)或其组合物所选的水溶性碱基的水溶液(所述溶液中所含的所述碱基的量至少为20%w / v)以及(甲)乙醇接触,以形成(2Z)-2-异丙基-5-甲基-2-己烯醛;步骤ii)将(2Z)-2-异丙基-5-甲基-2-己烯醛与还原体系接触,以形成2-异丙基-5-甲基己醛;步骤iii)将2-异丙基-5-甲基己醛与甲醛和无机碱基接触,以形成2-异戊基-2-异丙基丙烷-1,3-二醇;步骤iv)将2-异戊基-2-异丙基丙烷-1,3-二醇与甲基化试剂和碱接触,以形成2-异戊基-2-异丙基-1,3-二甲氧基丙烷。