Which of the following statements is not correct?

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The ease with which :W of the acyl compound RCOW is lost depends upon its basicity; the weaker the base, the better the leaving group.

Adipic acid $HOOC {({CH}_{2})}_{4} COOH$ on heating produces cyclic adipic anhydride having structure.

Aldehydes or ketones undergo nucleophilic addition reactions instead of substitution reactions because the leaving group $(: H^{-} or : R^{-})$ are the strongest bases of all

It is more convenient to prepare amides and esters by first converting carboxylic acid into acid chloride followed by its reaction with ammonia or an alcohol.

answer is D.

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Detailed Solution

(d) The given structure contains seven membered ring which is not stable as the five and six membered rings. Instead of producing cyclic anhydride, adipic acid loses carbon dioxide and form cyclopentanone.

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