Continuous-Flow<i>O</i>-Alkylation of Biobased Derivatives with Dialkyl Carbonates in the Presence of Magnesium-Aluminium Hydrotalcites as Catalyst Precursors
作者:Lisa Cattelan、Alvise Perosa、Piero Riello、Thomas Maschmeyer、Maurizio Selva
DOI:10.1002/cssc.201601765
日期:2017.4.10
The base‐catalysed reactions of OH‐bearing biobased derivatives (BBDs) including glycerol formal, solketal, glycerol carbonate, furfuryl alcohol and tetrahydrofurfuryl alcohol with non‐toxic dialkyl carbonates (dimethyl and diethyl carbonate) were explored under continuous‐flow (CF) conditions in the presence of three Na‐exchanged Y‐ and X‐faujasites (FAUs) and four Mg–Al hydrotalcites (HTs). Compared
在连续流(CF)条件下研究了含OH的生物基衍生物(BBD)的碱催化反应,包括甘油缩甲醛,单缩醛,碳酸甘油酯,糠醇和四氢糠醇与无毒的碳酸二烷基酯(碳酸二甲酯和碳酸二乙酯)在三个Na交换Y和X八面沸石(FAU)和四个Mg-Al水滑石(HT)存在的情况下。与以前的由碳酸二烷基酯介导的醚化方案相比,所报道的方法不仅在(化学)选择性方面,而且在催化剂的可循环性,后处理,产品纯化的简便性以及重要的是工艺强化方面都提供了实质性的改进。表征研究证明,HT30和KW2000水滑石都可作为催化剂前体:在热活化预处理中,