Which of the following does not react with $H C N ?$

C H_{3} C H O

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C H_{3} - O | | C - C H_{3}

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A r - O | | C - R

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A r - O | | C - A r

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Solution

The correct option is C $A r - O | | C - A r$
$O$
$A r - | | C - A r$
Aromatic group withdraws electron from oxygen.
So, negative charge is going to be created on carbonyl carbon.

So, option D won't react with $H C N$ and is the answer.

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