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Which of statement is correct regarding the basicity of the following two primary amines?

 

$ \begin{array}{1 1}(a)\;\text{(I) > (II) because it is an aromatic amine}\\(b)\;\text{(II) > (I) because it is an aliphatic amine}\\(c)\;\text{(I) < (II) because of difference in the nature of }\beta-carbon\\(d)\;\text{Both are equally basic because both are }1^o\text {amines}\end{array}$

1 Answer

The $C^{\beta}$ in cyclohexyl-$CH_2NH_2$ uses $SP^3$ hybrid orbitals while $C^{\beta}$ in the benzalamines uses $SP^2$ hybrid orbitals.Hence the correct order is (II) > (I) and nature of $\beta$-carbon.
Hence (c) is the correct answer.
answered Mar 3, 2014 by sreemathi.v
 
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