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  • Which of the following carbanion is most stable ? Option: 1 <img alt="\mathrm{CH}_{3}-{ \circleddash }\mathrm{CH}-\mathrm{CF}_{3}" src="https://

Which of the following carbanion is most stable ? 

Option: 1

\mathrm{CH}_{3}-{ \circleddash }\mathrm{CH}-\mathrm{CF}_{3}


Option: 2

CH_3 - \circleddash CH-C(OH)_3


Option: 3

CH_3 - \circleddash CH-CH_2 - NO_2


Option: 4

CF_3 - \circleddash CH- CF_3


Answers (1)

CF_3 - \circleddash CH- CF_3 is most stable among the given option because both sides strong -I group(-CF3) are present.

1. -CH3 has +I effect and -CF3 has -I effect.

2. -CH3 has +I effect and -C(OH)3 has -I effect.

3. -CH3 has +I effect and -CH2-NO2 has -I effect.

4. -CF3 has -I effect and -CF3 has -I effect.

So, Option 4 is correct.

Posted by

Sumit Saini

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