CHLOROACETYLENES AS MICHAEL ACCEPTORS. II. DIRECT ETHYNYLATION AND VINYLATION OF TERTIARY ENOLATES.

Article abstract of DOI:10.1016/S0040-4039(00)87345-1

The reaction of ClC<*>CCl, PhC<*>CCl and PhSC<*>CCl with a variety of tertiary enolates leads in 43-90percent yields to α-chloroethynyl, α-phenylethynyl and α-thiophenylethynyl derivatives.The -C<*>CCl group is smoothly converted to -C<*>CH using copper p