Nickel-catalyzed regioselective carbocyclization of ortho-halophenyl ketones with propiolates: an efficient route to disubstituted indenols.
Carbocylization of o-halophenyl ketones with propiolates in the presence of Ni(dppe)Br2 and Zn powder in acetonitrile at 80 degrees C afforded the corresponding 2,3-disubstituted indenols.
Department of Chemistry, Tsing Hua University, Hsinchu, Taiwan 300.
Dinesh Kumar
DK
Rayabarapu
Chien-Hong
CH
Cheng