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NMR study of a Ti ate enolate [3Ob] showed that the ketone was formed in the generation of the Ti ate enolate (although this is only mentioned in the footnote of Fig. 2 of the paper). This fact also supports the proposed mechanism.
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Silyl enol ether of α-Me cyclohexanone consists of thermodynamic enolate: kinetic enolate = 87:13.
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109
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Silyl enol ether of α-Ph cyclohexanone contains only thermodynamic enolate.
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