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The increasing order of basicity of the following compounds is (1) (2) (3) (4)

Options

  1. A(4) < (2) < (1) < (3)
  2. B(1) < (2) < (3) < (4)
  3. C(2) < (1) < (3) < (4)
  4. D(2) < (1) < (4) < (3)

Correct answer

D. (2) < (1) < (4) < (3)

Step-by-step solution

3 is most basic because its conjugate acid is stabilized by equivalent resonance. Out of 1 and 4, 4 is more basic due to +I effect. 2 is less basic than 1 and 4 because N atom is s p 2 hybridized (more s%).

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