Palladium-Catalyzed Arylation of the THP Derivative of (Z)-2-Butene-1,4-diol with Arenediazonium Salts and the Synthesis of β-Aryl-γ-butyrolactones
作者:Sandro Cacchi、Giancarlo Fabrizi、Antonella Goggiamani、Alessio Sferrazza
DOI:10.1055/s-0028-1087959
日期:2009.4
tetrafluoroborates with the THP derivative of (Z)-2-butene-1,4-diol in the presence of Pd(OAc) 2 in MeOH at 35 °C gives 4-aryl-2-methoxytetrahydrofurans in good to high yields. The reaction tolerates a variety of useful functional groups including ester, keto, cyano, nitro, chloro, and bromo functionalities as well as ortho substituents. Based on this process, y-aryl-β-butyrolactone derivatives can be prepared via
芳烃重氮四氟硼酸盐与 (Z)-2-丁烯-1,4-二醇的 THP 衍生物在 Pd(OAc) 2 存在下在 MeOH 中在 35 °C 下反应得到 4-芳基-2-甲氧基四氢呋喃产量。该反应耐受各种有用的官能团,包括酯、酮、氰基、硝基、氯和溴官能团以及邻位取代基。基于该过程,y-芳基-β-丁内酯衍生物可以通过连续钯催化的芳基化-环化-氧化方案制备,该方案省略了4-芳基-2-甲氧基四氢呋喃中间体的分离。