Task-specific ionic liquid-catalyzed efficient couplings of indoles with 1,3-dicarbonyl compounds: an efficient synthesis of 3-alkenylated indoles
作者:Sougata Santra、Adinath Majee、Alakananda Hajra
DOI:10.1016/j.tetlet.2011.05.069
日期:2011.7
Direct alkenylation of indoles at the 3-position with 1,3-dicarbonyl compounds under Bronsted acidic ionic liquid catalysis has been developed. The yields were excellent, and the catalyst can be reused at least six times without noticeable loss of catalytic activity. (C) 2011 Elsevier Ltd. All rights reserved.
Iodine-Catalyzed Highly Efficient Synthesis of 3-Alkylated/3-Alkenylated Indoles from 1,3-Dicarbonyl Compounds
作者:Krishna Singh、Neetu Singh
DOI:10.1055/s-0032-1316684
日期:2012.9
Molecular iodine has been found to be an efficient and inexpensive catalyst for the synthesis of 3-alkylated/3-alkenylated indoles in excellent yields by using different indoles and 1,3-dicarbonylcompounds at room temperature.