Nickel-catalyzed regioselective carbocyclization of ortho-halophenyl ketones with propiolates: an efficient route to disubstituted indenolsElectronic supplementary information (ESI) available: synthesis and characterization of compounds 3. See http://www.rsc.org/suppdata/cc/b2/b201473d/

Abstract

Carbocylization of o-halophenyl ketones with propiolates in the presence of Ni(dppe)Br₂ and Zn powder in acetonitrile at 80 °C afforded the corresponding 2,3-disubstituted indenols.