Question

Show how you would accomplish the following synthetic transformations. You may use any necessary reagents.$\left(\mathbf{a}\right)\mathbf{N}\mathbf{-}\mathbf{ethylbenzamide}\to \mathbf{benzylethylamine}$

Short answer

Synthetic transformation for N-ethylbenzamide to benzylethylamine is show as,

Step-by-step solution

Step-by-Step SolutionStep 1: Use of  LiAIH4reagent

${\mathbf{LiAIH}}_4$is a strong reducing agent for polar double bonds, as it easily thought of as a source of ${\text{H}}^{-}$ . It will reduce aldehydes, ketones,esters, carboxylic acid chloride, carboxylic acids and even carboxylate salts to alcohols.

${\mathbf{LiAIH}}_4$is also reduce the amide and nitriles to amine, In above reaction amide is reduce to amine.

Synthesis of benzylethylamine from N-ethylbenzamide

When N-ethylbenzamide react with${\text{LiAIH}}_{\text{4}}$and${\text{H}}_{\text{2}}\text{O}$then there is a formation of benzylethylamine, in this reaction carbonyl group are direct reduce to alkane.

Formation of benzylethylamine