[摘要]：The electrophilic cyclization reaction of (Z)-chalcogenoenynes using butyltellurium tribromide as an electrophilic source is presented. The cyclization reaction proceeded cleanly under mild reaction conditions and 3-(butyltellanyl)chalcogenophenes were formed in moderate to excellent yields. Subsequent, using these heterocycles as substrate to Pd-catalyzed cross-coupling reactions a new C-C bond was formed in good yields.
