Q11 / 180 · COMEDK 2023 (Memory Based) · Chemistry

Rank the following compounds in order of increasing basicity. Figure

  • A
    $4 < 2 < 1 < 3$
  • B
    $4 < 1 < 3 < 2$
  • Correct answer
    C
    $4 < 3 < 1 < 2$
  • D
    $2 < 1 < 3 < 4$

Solution

As, EDG on benzene increase the basicity and EWG decrease thus when (EWG) is directly attached to benzene nucleus it is, least basic strength. (1) aromatic amine (2) aliphatic $-\mathrm{CH}_2 \mathrm{NH}_2$, thus maximum basic strength (3) aromatic but $-\mathrm{NO}_2$ group is (EWG) decreasing electron density at $\mathrm{N}$-atom (4) Figure
$4 < 3 < 1 < 2$

Hence, the correct answer is option: 'C'.

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