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Enolesters compounds

The Lewis acid mediated aldol-type reaction of nucleophilic alkenes (alkyl enol ethers, enolesters) has been investigated since 1939 and is well documented in the literature. The first breakthrough in this field was in 1973-74 when Mukaiyama and coworkers found that silyl enol ethers are much more effective than alkyl enol ethers in the Lewis acid mediated additions to carbonyl compounds. This is related to the fact that silicon is markedly more electropositive than carbon (1.64 vs. 2.35), resulting in a stronger polarization of Si-0 bonds and in a stronger tendency for nucleophilic attacks at silicon... [Pg.53]

Difluoroacetamidiiies 17,188 N,N-Difluoroamino compounds (s. a. N,N-Difluorocarboxylic acid amides) 17, 520 Difluoroboric acid enolesters... [Pg.228]

See other pages where Enolesters compounds is mentioned: [Pg.168]    [Pg.522]    [Pg.508]    [Pg.168]    [Pg.16]    [Pg.164]    [Pg.274]    [Pg.447]    [Pg.450]    [Pg.472]    [Pg.216]    [Pg.238]    [Pg.303]    [Pg.307]    [Pg.270]    [Pg.139]    [Pg.370]    [Pg.193]    [Pg.234]    [Pg.247]    [Pg.294]   
See also in sourсe #XX -- [ Pg.17 ]



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Enolesters

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