Task-specific ionic liquid-catalyzed efficient couplings of indoles with 1,3-dicarbonyl compounds: An efficient synthesis of 3-alkenylated indoles

Article abstract of DOI:10.1016/j.tetlet.2011.05.069

Direct alkenylation of indoles at the 3-position with 1,3-dicarbonyl compounds under Br?nsted 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 catalyt