MCQ
Correct order of basicity of various nitrogen in $LSD$ is
- A$1 > 2 > 3$
- ✓$2 > 1 > 3$
- C$ 2 > 3 > 1$
- D$3 > 2 > 1$
✓
Answer
Correct option: B.
$2 > 1 > 3$
b
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 $2$ 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 $2\,>\,1\,>\,3$.
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