JEE Mains · Chemistry · STD 11 - 8.4. Organic chemistry reaction mechanism
Given below are two statements:
Statement I: On the basis of inductive effect, the order of stability of alkyl carbanions is CH\(_3^- >\) CH\(_3\)-CH\(_2^- >\) (CH\(_3\))\(_2\)CH\(^- >\) (CH\(_3\))\(_3\)C\(^-\).
Statement II: Allyl and benzyl carbanions are more stabilised by inductive effect and not by resonance effect.
In the light of the above statements, choose the correct answer from the options given below
- A Both Statement I and Statement II are correct
- B Both Statement I and Statement II are incorrect
- C Statement I is correct but Statement II is incorrect
- D Statement I is incorrect but Statement II is correct
Answer & Solution
Correct Answer
(C) Statement I is correct but Statement II is incorrect
Step-by-step Solution
Detailed explanation
Statement I is correct because alkyl groups exert a +I effect (electron-donating inductive effect). This increases the electron density on the negatively charged carbon atom, destabilizing the carbanion. Thus, as the number of alkyl groups increases, the stability of the…
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