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NEET2012ChemistryAminesActual

Which of the following is most basic in nature?

Options

  1. ANH ₃
  2. BCH ₃ NH ₂
  3. C( CH ₃ )₂ NH
  4. DC ₆ H ₅ ~N ( CH ₃ )₂

Correct answer

C. ( CH ₃ )₂ NH

Step-by-step solution

Basicity of amines depends upon the availability of lone pair of nitrogen for donation. Electron releasing group like - CH ₃ increases the basicity of amines by increasing electron density over nitrogen, which facilitate the donation of lone pair of electrons. Electron withdrawing groups like -Ph group withdraws electrons and thus, make amines less basic by decreasing electron density over nitrogen. Hence, the order of basic nature of the given amines is ( CH ₃ )₂ NH C ₆ H ₅ ~N ( CH ₃ )₂ CH ₃ NH ₂ NH ₃ Thus, ( CH ₃

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