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Dehydrohalogenation for Alkenes

Which of the ...

Question

Which of the following will give the best yield of 2-pentene on reaction with $C_{2} H_{5} O N a / C_{2} H_{5} O H$ ?

2-iodopentane

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2-bromopentane

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3-iodopentane

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all equally satisfactorily

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Solution

The correct option is C 3-iodopentane
3-iodopentane will give the best yield of 2pentene on reaction with sodium ethoxide / ethanol.

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