SYNTHESIS AND TRANSFORMATIONS OF NON-GRIGNARD ORGANOMAGNESIUM REAGENTS OBTAINED FROM 1,3-DIENES

This paper is the first attempt to systematize available published data on the synthesis and transformations of unsaturated organomagnesium compounds obtained from 1,3-dienes by nontraditional methods. Direct metallation of 1,3-dienes and polyenes by chemically activated highly active magnesium is reviewed. Some results of hydro- and carbo-magnesiation of unsaturated componds by hydride and alkyl magnesium derivatives are cited including those obtained with homogeneous metal complex catalysts. Attention is focused also on metallation of cyclic 1,3-dienes by highly active magnesium or Grignard reagents and some of their analogues. The structure and chemistry of non-trivial organomagnesium compounds are also discussed.