Conjugate addition of lithium enolates

For the sake of brevity, such important transformations as the conjugate addition of lithium enolates on activated olefins or the halogenation, amination, oxidation. .. of enolates have not been considered here. Each of these reactions has been the object of considerable developments lately, in particular for their asymmetric versions, and giving even short accounts about the state of the art would have been extremely space-consuming. [Pg.527]

Conjugate addition of lithium enolates to a,/3-unsaturated thioamides is also promoted by the addition of 1-2 equiv. of HMPT. ... [Pg.424]

Conjugate additions. Enals undergo selective allylation with diallylcerium chloride in the presence of ATPH. Regioselective Robinson annulations can be initiated by the conjugated addition of lithium enolates to enones. - Remarkably, silyllithium reagents add to the p-position of aromatic carbonyl compounds in the presence of ATPH. ... [Pg.14]

Conjugate addition of lithium enolates onto terminal alkynyl- and allenyl-sulfoxides has been reported to give allylic sulfoxides which undergo Mislow-Braverman-Evans rearrangement to a-keto vinyl carbinols (Scheme 187). (g)... [Pg.589]

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