在碱存在下,苯并三唑-1-基(1 H-吡咯-2-基)甲酮10和苯并三唑-1-基(1 H-吲哚-2-基)甲酮11在碱的存在下与各种酮,异氰酸酯和异硫氰酸酯的反应得到吡咯并[1,2 - c ]恶唑-1-酮1,恶唑并[3,4- a ]吲哚-1-酮2,吡咯并[1,2- c ]咪唑3和咪唑并[1,5- a通过简单的一步操作即可吲哚4。
A route to access imidazol[1,5-<i>a</i>]indole-1,3-diones and pyrrolo[1,2-<i>c</i>]imidazole-1,3-diones
作者:Ramana Sreenivasa Rao、Femil Joseph Shajan、D. Srinivasa Reddy
DOI:10.1039/c9ob01462d
日期:——
A novel and practical route to synthesize imidazol[1,5-a]indoles and pyrrolo[1,2-c]imidazoles via N-H functionalization has been developed. Indole-2-carboxylic acid or pyrrole-2-carboxylic acid with diverse aniline groups and carbonyldiimidazole (CDI), in the presence of a base under microwave conditions, resulted in imidazol[1,5-a]indoles and pyrrolo[1,2-c]imidazoles, respectively. The present method