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Cyclization, radicals with strained compounds

Radical Reactions. The a-p-tolylsulfonylmethyl radical, generated using either tributyltin hydride, azobisisobutyro-nitrile, or hexabutyldistannane with UV irradiation, adds to enol ethers, enatnines, and silyl enol ethers. The addition to enam-mes shows considerable syn diastereoselectivity which can be explained on the basis of an allylic 1,3-strain model (eq 11). When an alkenic or alkynic moiety is present in the a-substituent of the a-p-tolylsulfonylmethyl radical, cyclization can occur to give five-membered ring compounds (eqs 12 and IS). ... [Pg.135]

See other pages where Cyclization, radicals with strained compounds is mentioned: [Pg.72]    [Pg.173]    [Pg.83]    [Pg.325]    [Pg.434]    [Pg.434]    [Pg.1]    [Pg.48]    [Pg.93]    [Pg.277]    [Pg.434]    [Pg.1]    [Pg.87]    [Pg.87]   
See also in sourсe #XX -- [ Pg.1224 ]



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Cyclization, radicals compounds

Radical cyclization

Strain compounds

Strained compounds

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