Nitrogen Containing Compounds Question 4
Question: The correct order of basicity?s of the following compounds is $ \underset{4}{\mathop{CH_3-\overset{O}{\mathop{\overset{||}{\mathop{C}},}},-NH_2}}, $ [IIT-JEE (Screening) 2001]
Options:
A) $ 2>1>3>4 $
B) $ 1>3>2>4 $
C) $ 3>1>2>4 $
D) $ 1<2<3<4 $
Show Answer
Answer:
Correct Answer: B
Solution:
The relative basic character of $ 1^{o},2^{o} $ and $ 3^{o} $ amines also depends upon the nature of the alkyl group. $ R $ Relative basic strength $ -CH_3 $ $ R_2NH>R-NH_2>R_3N>NH_3 $ $ -C_2H_5 $ $ R_2NH>R-NH_2>NH_3>R_3N $ $ -CHMe_2 $ $ R-NH_2>R_3N>R_2NH>NH_3 $ $ -CMe_3 $ $ NH_3>R-NH_2>R_2NH>R_3N $
BETA
