Aqueous-phase hydrogenation and hydroformylation reactions catalyzed by a new water-soluble [rhodium]–thioligand complex
作者:S. Paganelli、O. Piccolo、P. Pontini、R. Tassini、V.D. Rathod
DOI:10.1016/j.cattod.2014.05.038
日期:2015.6
Rh(DHTANa) is a new water-soluble catalyst easily obtained by mixing in water the catalytic precursor [Rh(COD)Cl]2 and the dihydrothioctic acid sodium salt (DHTANa). This catalyst showed to be very active in the hydrogenation of unsaturated substrates as 2-cyclohexen-1-one, the biomass-derived furfural and acetophenone. In this last case the catalytic system obtained by using as water-soluble ligand (R)-(DHTANa)
Rh(DHTANa)是一种新型水溶性催化剂,可通过在水中混合催化前体[Rh(COD)Cl] 2轻松获得和二氢硫代乙酸钠盐(DHTANa)。该催化剂在不饱和底物如2-环己烯-1-酮,生物质衍生的糠醛和苯乙酮的加氢中显示出非常高的活性。在后一种情况下,通过使用水溶性配体(R)-(DHTANa)获得的催化体系提供了具有非常适度的对映选择性的(R)-1-苯基乙醇。Rh(DHTANa)在苯乙烯的水相加氢甲酰化反应中也具有活性,仅产生两种相应的醛,对支链醛2-苯基丙醛的选择性为80-86%。这种新的催化体系很容易在加氢和加氢甲酰化过程中循环使用,没有观察到浸出现象。