The increasing basicity order of the following compounds is:
(A) $C H_{3} C H_{2} N H_{2}$ (B) $C H_{2} C H_{3} | C H_{3} C H_{2} NH$
(C) $C H_{3} | H_{3} C - N - CH_{3}$ (D) $C H_{3} | Ph - N - H$

Question

The increasing basicity order of the following compounds is: (A) CH_3CH_2NH_2(B) CH_2CH_3 |CH_3CH_2 NH (C) CH_3 |H_3C-N- CH_3(D) CH_3 | Ph-N-H

Accepted Answer

Correct answer: B. (b) pK_b (A) EtNH_2 3.29 (B) (Et_2 ) NH 3.00 (C) Me_3N 4.22 (D) Ph- NH- Me 4.7 So, order of basic strength is: C_2H_5 NH ←C_2H_5 C_2H_5 NH ←C_2H_5>C_2H_5NH_2>Me_3N > PhNH- Me 2C_2H_5 1C_2H_2 steric e pair delocalized over groups groups factor Ph-ring (B)> (A)>(C)>(D)

$The increasing basicity order of the following compounds is: (A) C H_{3} C H_{2} N H_{2} (B) C H_{2} C H_{3} | C H_{3} C H_{2} NH (C) C H_{3} | H_{3} C - N - CH_{3} (D) C H_{3} | Ph - N - H$

Solution

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