Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

The preparation of a,p-unsaturated ketones by direct acylation of vinylcopper reagents has proven more problematic, since lithium cuprates do add to the product enones. Better results are obtained with the less reactive monovinyl copper compounds in the presence of a palladium catalyst. Alkynic ketones have been prepared by a variation of the Stephens-Castro coupling. ... [Pg.226]

See other pages where Stephens-Castro coupling alkynic ketones is mentioned: [Pg.700] [Pg.227]

See also in sourсe #XX -- [ Pg.3 , Pg.226 ]

See also in sourсe #XX -- [ Pg.226 ]

See also in sourсe #XX -- [ Pg.3 , Pg.226 ]