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Decarboxylation

Which of the ...

Question

Which of the compounds shown will react with dimethyl malonate in the presence of methoxide ion to give a compound, which on treatment with aqueous acid and gentle heating will decarboxylate to form butanoic acid?

A

C H_{2} C H C H_{2} C O O H

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B

C H_{3} C H_{2} B r

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C

C H_{3} C H_{2} C O C H_{3}

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D

C H_{3} C H_{2} C H_{2} B r

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Solution

The correct option is A $C H_{3} C H_{2} B r$
Butanoic Acid:
The compounds shown in the above reaction $C H_{3} C H_{2} C H_{2} - B r$ react with dimethyl malonate in the presence of methoride ion to give a compound, which on treatment with aqueous acid and gentle heating will decarbonylate to form butanic acid.

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