Couplage mixte entre sulfones vinyliques et réactifs de grignard en présence de sels de métal de transition: synthèse stéréosélective d'oléfines trisubstituées.
作者:Jean-Luc Fabre、Marc Julia、Jean-Noël Verpeaux
DOI:10.1016/s0040-4039(00)87370-0
日期:1982.1
A new cross coupling reaction of vinylic sulphones with Grignard reagents catalyzed by nickel and iron complexes is described. This reaction is stereospecific: tri-substituted olefins of defined stereochemistry are obtained in good yield.
Organic Synthesis with Sulfones noXXIX Stereospecific hydrogenolysis of vinylic sulfones with grignards and transition metal catalysts.
作者:J.-L Fabre、M Julia
DOI:10.1016/s0040-4039(00)88328-8
日期:1983.1
Hydrogenolysis of various vinylic sulfones to the corresponding olefins can be carried out by alkyl Grignard reagents with nickel or palladium catalysts. Yields are good to excellent. Retention of configuration is observed. The influence of ligands is discussed.