Q.
Which one of the following alkyl groups is more powerful electron donating group when they are attached to saturated carbon?
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a
-CH(CH3)2
b
- CH(CH3)C2 H5
c
- CH3
d
-C(CH3)3
answer is D.
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Detailed Solution
When alkyl group attached to saturated carbon then there is no hyper conjugation effect and only +I-effect operating.As the branching at α-carbon increases electron donating ability by +I-effect increases.
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