A α-amino group, monosubstituted amide, methyl ester, carboxylic acid and disubstituted amide has to be identified from the given biomolecule . Concept Introduction: Carboxylic acid: One − O H group is attached to the carbonyl carbon atom of the compound. It is represented as R C O O H Ester: One − O R ' group is attached to the carbonyl carbon atom of the compound. It is represented as R C O O R ' . The hydrogen atom of − C O O H is replaced by an alkyl or aryl group. Esterification reaction: Esters are prepared by the reaction of a carboxylic acid and an alcohol molecule with the elimination of water molecule. The addition of a strong acid such as H 2 SO 4 is used to increase the rate of reaction. Here, the − O H group is attached to the carbonyl carbon atom of the carboxylic acid is being replaced by the − O R ' in the alcohol forming ester and water. Amines are the derivatives of ammonia ( N H 3 ) with one or more of the hydrogens replaced with a substituent such as an alkyl group. Depending on the number of carbon side chain of the nitrogen, different types of amines can form. Aromatic Compounds: Compounds that are planar, conjugated, cyclic and having ( 4 n + 2 ) π electrons are known as aromatic compounds.

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Chapter 17.1, Problem 17.11P

Interpretation Introduction

Interpretation:

A α-amino group, monosubstituted amide, methyl ester, carboxylic acid and disubstituted amide has to be identified from the given biomolecule.

Concept Introduction:

Carboxylic acid: One −OH group is attached to the carbonyl carbon atom of the compound. It is represented as RCOOH

Ester: One −OR' group is attached to the carbonyl carbon atom of the compound. It is represented as RCOOR'. The hydrogen atom of −COOH is replaced by an alkyl or aryl group.

Esterification reaction: Esters are prepared by the reaction of a carboxylic acid and an alcohol molecule with the elimination of water molecule. The addition of a strong acid such as H2SO4 is used to increase the rate of reaction.

Here, the −OH group is attached to the carbonyl carbon atom of the carboxylic acid is being replaced by the −OR' in the alcohol forming ester and water.

Amines are the derivatives of ammonia (NH3) with one or more of the hydrogens replaced with a substituent such as an alkyl group.

Depending on the number of carbon side chain of the nitrogen, different types of amines can form.

Aromatic Compounds: Compounds that are planar, conjugated, cyclic and having (4n+2)π electrons are known as aromatic compounds.

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