Correct order of basicity of various nitrogen in LSD is :

1 > 2 > 3

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2 > 1 > 3

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2 > 3 > 1

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3 > 2 > 1

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Solution

The correct option is C $2 > 1 > 3$

Nitrogen 2 is most basic because there is no resonance to tie up their electrons and also 3 R-groups are electron donating (inductive effect).

Nitrogen 3 is least basic because the lone pair on N is in resonance with $C = O$ double bond of carbonyl group.

1 is less basic than 2 because in 1, the lone pair on N is in resonance with benzene ring as well as with the double bond.

Correct order of basicity of various nitrogen in LSD (lysergic acid diethylamide) is $2 > 1 > 3$ .

Option B is correct.

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