Selenides, a-metallovinyl

Alkylation ofa-thio- and a-seleno-alkyllithiums Alkylation ofa-thio- and a-seleno-benzylmetals Alkylation ofa-thio- and a-seleno-allylmetals Alkylation ofa-thio- and a-seleno-propargylic metal derivatives Alkylation of a-metallovinyl sulfides and selenides... 

Metalloamides are suitable for the synthesis of 1-metallovinyl aryl selenides (Scheme 44) and 1-metalloallenyl phenyl selenides (Scheme 45) from the corresponding vinyl or allenyl selenides. The synthesis of the latter organometallics is even more conveniently achieved by metallation of l-phe-nylseleno-l-propyne or by a two-step, one-pot sequence of reactions fiom 2-chloroallyl phenyl selenide (Scheme 45). 

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