A Short Route to the Synthesis of Pyrrolocoumarin and Pyrroloquinolone Derivatives by Sonogashira Cross-Coupling and Gold-Catalyzed Cycloisomerization of Acetylenic Amines
作者:Krishna Majumdar、Buddhadeb Chattopadhyay、Srikanta Samanta
DOI:10.1055/s-0028-1083295
日期:2009.1
The syntheses of pyrrolocoumarin and pyrroloquinolone derivatives have been achieved in excellent yields from the acetylenic amines by gold-catalyzed cycloisomerization in the absence of any silver salts or any other bases. The acetylenic amines were in turn obtained by Sonogashira coupling of the corresponding coumarin and quinolone derivatives. coumarin - quinolone - Sonogashira coupling - gold catalysis
在没有任何银盐或任何其他碱的情况下,通过金催化的环异构化反应,由乙炔胺以优异的产率获得了吡咯香豆素和吡咯并喹诺酮衍生物的合成。炔胺又通过Sonogashira偶联相应的香豆素和喹诺酮衍生物而获得。 香豆素-喹诺酮-Sonogashira偶联-金催化-分子内环化-环异构化