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Electronic displacement effects
Concepts tested here
- Inductive effect and pi shift
All Questions
2015 AIPMT-I 1 question
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Which of the following is the most correct electron displacement of a nucleophilic reaction to take placeIn $CH_3-CH=CH-CH_2-Cl$, the $CH_3$ group shows +I effect and pushes electrons towards the double bond.
The $\pi$-electrons shift towards the $CH_2Cl$ end, and Cl, showing –I effect, pulls the C–Cl bond electrons towards itself.
The correct representation shows the +I arrow from $CH_3$, the $\pi$-shift towards $CH_2$ and the C–Cl bond pair moving onto Cl, making the carbon open to nucleophilic attack.