Synthesis of 2-Arylacrylates from Pyruvate by Tosylhydrazide-Promoted Pd-Catalyzed Coupling with Aryl Halides
作者:José Barluenga、María Tomás-Gamasa、Fernando Aznar、Carlos Valdés
DOI:10.1002/chem.201002425
日期:2010.11.15
Important synthetic intermediates and direct precursors of the prophen class of anti‐inflammatory agents, 2‐arylacrylates are prepared in one step from ethyl pyruvate by employing the recently developed Pd‐catalyzed cross‐coupling between tosylhydrazones and aryl halides. Moreover, substituted 2‐oxoesters afford tri‐ and tetrasubstituted functionalized alkenes.
重要的合成中间体和芬太尼类抗炎药的直接前体,是通过使用最近开发的甲苯磺酰hydr与芳基卤化物之间的钯催化交叉偶联,从丙酮酸乙酯一步制备丙烯酸2-芳基丙烯酸酯。此外,取代的2-氧酸酯可提供三和四取代的官能化烯烃。