A) \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}N{{H}_{2}}\]
B) \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}NHC{{H}_{3}}\]
C) \[{{O}_{2}}N-C{{H}_{2}}\,N{{H}_{2}}\]
D) \[C{{H}_{3}}NHCHO\]
Correct Answer: D
Solution :
[d] \[C{{H}_{3}}NHCHO\] Amides are weaker bases than amines. Basicity order: \[{{(C{{H}_{3}})}_{2}}NH>C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{3}}N>N{{H}_{3}}>\] \[(C{{H}_{3}}C{{H}_{2}})NH>{{(C{{H}_{3}}C{{H}_{2}})}_{3}}\]\[N>C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}>N{{H}_{3}}\] \[3{}^\circ \,a\min e>2{}^\circ \,a\min e>1{}^\circ \]
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