Which compounds give an SN2 substitution reaction on treatment with alcoholic NaSH? (b) Which compounds give an E2 elimination reaction on treatment with alcoholic KOH? (c) Which compounds do not react under either of the previous reaction conditions?

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Q: (а) но (b) -CH3 он (гасemic)

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Q: CH3CH,CH,OH HO, HO,

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Q: comment

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Reactions at the Alpha Carbon Atom

The position next to the ketone or aldehyde functional group is termed as alpha position and the reaction which occurs at alpha position is called alpha substitution reaction. In an alpha substitution reaction, the alpha proton atom is substituted by an electrophile by the formation of an enol intermediate or enolate ion intermediate. Most of the carbonyl compounds go through an alpha substitution reaction.