[EN] PROCESS FOR THE DI-O-ALKYLATION OF 1,3-DIOLS TO 1,3-DIETHERS<br/>[FR] PROCÉDÉ DE DI-O-ALKYLATION DE 1,3-DIOLS EN 1,3-DIÉTHERS
申请人:SABIC GLOBAL TECHNOLOGIES BV
公开号:WO2021004760A1
公开(公告)日:2021-01-14
The present invention relates to a process for the di-O-alkylation of a 1,3-diol according to Formula I (I), said process comprising reacting said 1,3-diol with dioxane, an aliphatic or aromatic hydrocarbon solvent, an alkali metal hydroxide, and dimethyl sulphate, in order to obtain a 1,3-diether according to Formula II (II), wherein R1 and R2 are each independently a hydrogen atom or a hydrocarbyl group selected from alkyl, alkenyl, aryl, aralkyl, or alkylaryl groups, and one or more combinations thereof. The process according to the invention is an improved process for preparing 1,3-diether, such as 9,9-bis(methoxymethyl)fluorene, in a high yield and/or having a high purity. 9,9-bis(methoxymethyl)fluorene is a compound that is used as an electron donor for Ziegler-Natta catalysts.
本发明涉及一种根据式I(I)进行1,3-二醇的二-O-烷基化的方法,所述方法包括将所述1,3-二醇与二噁烷、脂肪族或芳香烃溶剂、碱金属氢氧化物和硫酸二甲酯反应,以获得根据式II(II)的1,3-二醚,其中R1和R2分别独立地是氢原子或从烷基、烯基、芳基、芳基烷基或烷基芳基组中选择的烃基团,以及一个或多个组合。根据本发明的方法是一种改进的制备1,3-二醚的方法,例如9,9-双(甲氧甲基)芴,其产率高和/或纯度高。9,9-双(甲氧甲基)芴是一种用作Ziegler-Natta催化剂的电子给体的化合物。