Synthesis of cyclopentadienyl enaminonitriles from α-chlorovinyl p- tolyl sulfoxides and acetonitrile with three consecutive carbon-carbon bond- formations

Article abstract of DOI:10.1016/S0040-4039(99)00341-X

Treatment of α-chlorovinyl p-tolyl sulfoxides with 5-equivalents of lithium carbanion of acetonitrile at -78 2°C to room temperature afforded cyclopentadienyl enaminonitriles in high yields with three consecutive carbon-carbon bond-formations. The mechani