Which one of the following works best as a base to quantitatively convert ethyl acetate $C H_{3} C O O C H_{2} C H_{3}$ to its enolate?

N a O H

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K O C (C H_{3})_{3}

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C H_{3} L i

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[(C H_{3})_{2} C H]_{2} N L i

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Solution

The correct option is A $K O C (C H_{3})_{3}$
Bulky base will work as better H ion acceptor and it will work poorly as nucleophile so it will convert ester into its enolate form.

Hence, the correct option is B.

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