High-yielding sequential one-pot synthesis of chiral and achiral α-substituted acrylates via a metal-free reductive coupling reaction
作者:Dhevalapally B. Ramachary、Chintalapudi Venkaiah、Y. Vijayendar Reddy
DOI:10.1039/c4ob00667d
日期:——
A general process for the high-yielding synthesis of substituted chiral and achiral α-substituted acrylates was achieved through the sequential one-pot combination of a metal-free reductive coupling reaction followed by an Eschenmoser methylenation. The proline catalyzed reaction of Meldrum's acid, aldehydes and Hantzsch ester followed by methylenation was successful with Eschenmoser's salt in the
通过无金属还原偶联反应的顺序一锅法结合然后进行Eschenmoser甲基化,可以实现高产率合成取代的手性和非手性α-取代的丙烯酸酯的一般方法。在醇溶剂存在下,Eschenmoser盐能成功地使脯氨酸催化Meldrum的酸,醛和Hantzsch酯的甲基化反应。本文中,我们显示了由手性/非手性α-取代丙烯酸酯高特权合成的合成原料,并显示它们是药物和天然产物合成中非常好的中间体。