Regioselective ring expansion followed by H-shift of 3-ylidene oxindoles: a convenient synthesis of N-substituted/un-substituted pyrrolo[2,3-<i>c</i>] quinolines and marinoquinolines
作者:Gopathi Ramu、Srinivas Ambala、Jagadeesh Babu Nanubolu、Bathini Nagendra Babu
DOI:10.1039/c9ra07831b
日期:——
and metal-free protocol for the synthesis of 4-oxo-4,5-dihydro-3H-pyrrolo[2,3-c]quinolines. The present method under mild reaction conditions with wide functional group compatibility gives several unexplored N-substituted/unsubstituted 4-oxo-4,5-dihydro-3H-pyrrolo[2,3-c]quinolines and marinoquinolines in good to excellent yields. Mechanistic insights for the synthesis of N-substituted pyrroloquinolines
在此,我们报告了一种用于合成 4-oxo-4,5-dihydro-3 H -pyrrolo[2,3 - c ] 喹啉的简单且无金属的方案。本方法在温和的反应条件下具有广泛的官能团相容性,以良好至优异的产率提供了几种未开发的 N-取代/未取代 4-oxo-4,5-dihydro-3 H -pyrrolo [2,3 - c ] 喹啉和 marinoquinolines。N-取代吡咯并喹啉合成的机理研究揭示了 3-亚基氧吲哚的扩环和 H 位移是关键步骤。