Question:
Which of the following is least basic ?
Correct Option: , 3
Solution:
For the given compounds :
(Hence least basic)
(4) $\mathrm{CH}_{3}-\mathrm{CH}_{2}-\ddot{\mathrm{NH}}-\mathrm{CH}_{2}-\mathrm{CH}_{3} ;$ L.P. on Nitrogen is localised.
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