Regarding reactivity of the compounds having carbonyl group. The most reactive compound out of the following is:
Correct answer: C. C
- A. A
- B. B
- C. C
- D. D
Explanation
In terms of electrophilic character, carboxyl groups are not as reactive as carbonyl groups. Examination of the resonance structures reveals that the carbonyl carbon bears a higher degree of positive charge than the carboxyl carbon, and is, therefore, a better (more reactive) electrophile. The more electron donating groups create hindrance and also decrease the negative charge on oxygen which in turn makes H less partially positive and hence reactivity decreases.
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About Carboxylic Acids
Carboxylic acids are named and studied through the combined effects of the carbonyl and hydroxyl groups, their preparation, acidity and hydrogen bonding. Reactions include neutralisation, esterification, reduction and conversion into acid chlorides, anhydrides, esters and amides, with emphasis on how these derivatives interconvert.
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