A novel sequence of Sonogashira coupling and acid-mediated nucleophilic addition to the ynone intermediate with concomitant deprotection and cyclocondensation opens a new one-pot synthetic access to 3-chloro-, 3-iodo-, and 3-chloro-4-iodo-furans in moderate to good yields. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
Sonogashira 偶联和酸介导的对炔酮中间体的亲核加成以及伴随的脱保护和环缩合的新序列打开了一种新的单锅合成途径,可用于 3-
氯-、3-
碘-和 3-
氯-4-
碘-
呋喃中等至良好的产量。(© Wiley-
VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)