Consider butanone (A) and its two possible enolates B & C.
Which of the two enolates will be more stable? B because of the more stable primary carbanion, or C because of more stable enolate (better hyperconjugation)?
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Very much related: http://chemistry.stackexchange.com/questions/17103 – Klaus-Dieter Warzecha Mar 04 '17 at 07:22
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3This is a classic example of forming enolates under thermodynamic or kinetic control. – Zhe Mar 04 '17 at 15:01
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in my opinion it should be C. – Prakhar Mar 04 '17 at 16:21