Cycloisomerization of omega-aryl-1-alkynes: GaCl3 as a highly electrophilic catalyst for alkyne activation.
Cycloisomerization of a variety of omega-aryl-1-alkynes, where omega = 5 or 6, in the presence of a catalytic amount of GaCl3 provided dihydronaphthalene derivatives or dihydrobenzocycloheptenes, respectively, in high yields.
Inoue
Hiroki
H
Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.
Chatani
Naoto
N
Murai
Shinji
S