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is CH 3 or any alkyl group a +R or -R group? and if it is +R group then why p-CH 3 -C 6 H 4 -NH 2 is less basic than p-OCH 3 -C 6 H 4 -NH 2 as CH 3 group shows +I and +R effect while OCH 3 shows -I and +R effect. and according to that the earlier one is more basic than the latter one.

is CH3 or any alkyl group a +R or -R group? and if it is +R group then why p-CH3-C6H4-NHis less basic than p-OCH3-C6H4-NHas CH3 group shows +I and +R effect while OCH3shows -I and +R effect.and according to that the earlier one is more basic than the latter one.

Grade:12th pass

1 Answers

REVTI RAMAN
32 Points
5 years ago
Electronic effects are not alone responsile for deciding acidity and basicity
Yes CHis a +R group since it provides electrons for delocalisation
But as we can see in second compound there is resonance and more hyperconjugation
also due to OCH3 group while there isnt in 1st one
so more the resonating structures more is the basicity..
approve if satisfied

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