Synthesis of pyrrolidones and quinolines from the known biomass feedstock levulinic acid and amines
作者:Carmen Ortiz-Cervantes、Marcos Flores-Alamo、Juventino J. García
DOI:10.1016/j.tetlet.2016.01.018
日期:2016.2
cost effective synthetic strategy. Here, we describe the synthesis of a variety of N-(alkyl, aryl)-5-methyl-2-pyrrolidones through the reductive amination of levulinic acid using formic acid as the hydrogen source. This system is catalyzed by 3.8 nm ruthenium nanoparticles that were prepared by thermal decomposition of [Ru3(CO)12] in solvent-free conditions. When the reactions were carried out without
将生物质衍生的化合物催化转化为增值产品,例如食品添加剂,农用化学成分和药物制剂,是一种有前途且具有成本效益的合成策略。在这里,我们描述了通过使用甲酸作为氢源对乙酰丙酸进行还原胺化来合成各种N-(烷基,芳基)-5-甲基-2-吡咯烷酮。该系统由3.8 nm钌纳米颗粒催化,该纳米颗粒是通过热分解[Ru 3(CO)12]在无溶剂的条件下使用。当反应在没有催化剂的情况下进行时,吡咯烷酮的收率低且选择性差。另外,乙酰丙酸和2-乙炔基苯胺之间的反应在温和且无金属的条件下以良好的产率产生了2-(2,4-二甲基喹啉-3-基)乙酸(8)。此外,取代的喹啉的合成是通过乙酰丙酸与对甲苯磺酸促进的不同的2-炔基苯胺之间的缩合反应而实现的,该方法被认为是制备喹啉的新方法。