Among the following compounds, the increasing order of their basic strength is :
← JEE Main 2017 · 9 Apr · Shift 1
ChemistrySingle correct+4 / -1Question 60 of 90
JEE Main 2017 · 9 Apr · Shift 1, Chemistry question 60
Answer and worked solution
Official answer: C
Pyrrole's lone pair is part of its aromatic sextet, so it is the weakest base. In aniline the lone pair is delocalised into the ring. Cyclohexylamine is a primary alkylamine, and N-methylpiperidine, a tertiary amine with alkyl groups pushing electrons onto N, is the strongest: II < I < IV < III.