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Carbenes alkyl substituted, 1,2-migration

By studying the effect of various a-substituents, it has been shown that the bond to the most highly substituted a carbon is preferentially cleaved and that the more nucleophilic alkyl carbon migrates to the relatively electron-poor free radical to form the carbene intermediate,... [Pg.380]

If acceptor-substituted carbene complexes are generated in the presence of thioethers, ylide formation is generally the mostly favored process. The resulting sulfonium ylides are often sufficiently stable to be isolated [975,1307-1309]. Typical reactions of sulfonium ylides include 1,2-alkyl migration, leading to products of... [Pg.213]

See other pages where Carbenes alkyl substituted, 1,2-migration is mentioned: [Pg.70]    [Pg.42]    [Pg.420]    [Pg.113]    [Pg.429]    [Pg.84]    [Pg.93]    [Pg.115]    [Pg.115]    [Pg.1271]    [Pg.152]    [Pg.257]    [Pg.152]    [Pg.115]    [Pg.1271]    [Pg.30]    [Pg.4725]    [Pg.115]    [Pg.308]    [Pg.918]    [Pg.115]    [Pg.150]    [Pg.234]    [Pg.865]    [Pg.248]   


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2-Substituted alkyl 3-

Alkyl migration

Alkyl substitute

Carbenes alkyl

Carbenes substitution

Substitution alkylation

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