Selective hydrodeoxygenation of biomass-derived furfural-acetone to prepare 1-octyl acetate
作者:Xuyang Liu、Yanbing Li、Jin Deng、Yao Fu
DOI:10.1039/c9gc01767d
日期:——
Sc(OTf)3 can not only promote ring-opening esterification but also selectively activate the secondary alcohol ester bond to achieve high selectivity for 1-octyl acetate. NMR and MS methods were utilized to investigate the reaction process. In addition, after 8 cycles of the Pd/C catalyst, the 1-octyl acetate yield gradually decreased from 90% to 80%. The decrease, according to XPS determination, in
通过在Pd / C和Sc(OTf)3上选择性加氢脱氧作为共催化体系,开发了一种绿色高效的催化体系,用于在温和条件下从生物质衍生的糠醛丙酮(FFA)一锅生产乙酸1-辛酯。醋酸。已经系统地研究了反应条件对产物分布的影响。的90%的最高1-辛酯产率可以在温和条件下(150℃,2兆帕ħ获得2,2小时)。发现四氢呋喃开环和酯键选择性裂解是关键步骤。在这些步骤中,由于其合适的路易斯酸度,Sc(OTf)3不仅可以促进开环酯化反应,而且还可以选择性地激活仲醇酯键,从而实现对乙酸1-辛酯的高选择性。NMR和MS方法用于研究反应过程。另外,在Pd / C催化剂的8个循环之后,乙酸1-辛酯的产率从90%逐渐降低到80%。根据XPS测定,Pd / C催化剂的催化效率下降主要是由于在后处理过程中金属Pd通过与空气接触而部分氧化。