Metathesis of heteroatom-substituted olefins and alkynes: Current scope and limitations

The use of vinyl- or alkynyl derivatives of the type Cdouble bond; length as m-dashC–X or Ctriple bond; length of mdashC–X (where X is an heteroatom) as substrates for metathesis increases further this reaction’s versatility. Selected examples illustrating recent progress in this area of research are presented. Current scope and future potential developments are discussed.