Supercritical CO2 as an effective medium for a novel conversion of glycerol and alcohols in the heterogeneous telomerisation of butadiene
作者:Lucinda Conceiçao、Rafał Bogel-Łukasik、Ewa Bogel-Łukasik
DOI:10.1039/c2gc16149d
日期:——
The selective telomerisation of 2,3-dimethylbuta-1,3-diene with several different mono- and polyalcohols proceeds in the presence of a heterogeneous palladium catalyst. By applying a green solvent (CO2), the selectivity of the reaction as well as the conversion of diene is easily moderated, imitating the results of reactions with organic solvents. In addition, the pressure tuning allows the driving of the reaction towards a highly selective synthesis of monotelomers, which could be valuable future intermediates in the production of surfactants or defoaming agents. Additionally, it was highlighted for the first time that the catalytic addition of glycerol and other polyalcohols to 2,3-dimethylbuta-1,3-diene is possible with complete avoidance of any volatile organic solvents.
在异质钯催化剂的作用下,2,3-二甲基丁-1,3-二烯与几种不同的一元醇和多元醇发生了选择性端聚反应。通过使用绿色溶剂(二氧化碳),反应的选择性和二烯的转化率很容易调节,从而模仿了使用有机溶剂进行反应的结果。此外,压力调节还能推动反应向高选择性单体合成的方向发展,而单体可能是未来生产表面活性剂或消泡剂的重要中间体。此外,研究还首次强调,在完全避免使用任何挥发性有机溶剂的情况下,可以将甘油和其他多元醇催化添加到 2,3-二甲基丁-1,3-二烯中。