Big Chemical Encyclopedia

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

Articles Figures Tables About

Diynes, reactions with metal complexes cobalt

The reaction of dienes, diynes, or en-ynes with transition metals " (usually cobalt) " forms organometalhc coordination complexes. In the presence of carbon monoxide, the metal complexes derived primarily from enynes (alkene-alkynes) form cyclopentenone derivatives in what is known as the Pauson-Khand... [Pg.1141]

In contrast to the thermal reactions of 1-alkynylboronic esters, the cycloaddition smoothly takes place under very mild conditions in the presence of metal catalysts (Scheme 28). A cobalt(i) complex catalyzed the [4+2]-cycloaddition of alkynyl boronates with 1,3-dienes to give cycloalkenyl boronates 266431 and with ct,cu-diynes giving arylboronates... [Pg.180]

See other pages where Diynes, reactions with metal complexes cobalt is mentioned: [Pg.293]    [Pg.19]    [Pg.388]    [Pg.74]    [Pg.119]    [Pg.376]    [Pg.138]    [Pg.317]    [Pg.110]    [Pg.267]    [Pg.13]    [Pg.317]    [Pg.302]    [Pg.173]    [Pg.296]    [Pg.250]   
See also in sourсe #XX -- [ Pg.201 , Pg.202 , Pg.203 , Pg.204 ]



SEARCH



1.3- Diynes reactions

Cobalt complexes reactions

Cobalt complexes, with

Cobalt reactions

Diynes

Metal complexes reactions

Metals cobalt

With metal complexes, reactions

© 2024 chempedia.info