Big Chemical Encyclopedia

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

Articles Figures Tables About

Vinylcyclopropanes metathesis

Metathesis of vinylcyclopropane over Re207/Al203/Bu4Sn proceeds with 2-3% conversion in the liquid phase at 35°C (Finkel shtein 1992a) reaction (8). By continuous removal of ethene the yield can be increased to 60-65% after 3-4 h with a selectivity of 95%. [Pg.107]

While the double bond of a vinylcyclopropane may participate in normal [2 -H 4] cycloadditions, " " tene addition to (341) results in a new uncatalysed olefin metathesis reaction (Scheme 51), with no [2 -I- 3] adduct analogous to (344) being pro-duced. The isolable dispiro tene addition products (342) are converted into... [Pg.76]

A combination of cross-metathesis and cyclopropanation gave vinylcyclopropanes 274 (Scheme 1.134) [192]. Three-component coupling progressed with high efficiency. [Pg.36]

See other pages where Vinylcyclopropanes metathesis is mentioned: [Pg.50]    [Pg.148]    [Pg.545]    [Pg.546]    [Pg.545]    [Pg.546]    [Pg.95]    [Pg.1685]    [Pg.1685]    [Pg.108]   
See also in sourсe #XX -- [ Pg.1515 ]



SEARCH



Vinylcyclopropanation

Vinylcyclopropane

© 2024 chempedia.info