Ruthenium-Catalyzed Selective C-C Coupling of Allylic Alcohols with Free Indoles: Influence of the Metal Catalyst

Chemistry. 2018 Apr 11;24(21):5474-5478. doi: 10.1002/chem.201706080. Epub 2018 Mar 25.

Abstract

Versatile reactive activities of allyl alcohols with free indoles in C-H functionalization reactions were investigated. Direct alkylation or cascade cyclization reactions could be selectively controlled based on the catalyst system: Ru(PPh3 )3 Cl2 provided C3-substituted β-ketone indoles whereas [Ru(p-cymene)Cl2 ]2 yielded cyclized indoles.

Keywords: allylic alcohols; free indoles; ruthenium; selective C−C coupling; β-ketone indoles.