Chapter 20: Q17E (page 653)

Give IUPAC names for the following carboxylic acids (reddish brown = Br);

Short Answer

Expert verified

The IUPAC names of the given compounds can be found.

Step by step solution

Finding IUPAC name for the compound (a)

The compound model can be represented as,

It is the derivative of benzoic acid with the atom of bromine on C₃ and group of methoxyl on C₄. The IUPAC name can be named as 3-bromo 4-methoxybenzoic acid.

Finding IUPAC name for the compound (b)

The compound model can be represented as,

It is an unsaturated acid with 4 carbon straight chain in addition to the presence of double bond between C₂ and C₃. The IUPAC name can be named as 3-methyl 2-butenoic acid.

Finding IUPAC name for the compound (c)

The compound model can be represented as,

It has cyclopentadiene ring which attaches the carboxyl group.

The double bond present between C₁ and C₂ & C₃ and C₄. The IUPAC name can be named as cyclopentane 1,3-dienecarboxylic acid.

Finding IUPAC name for the compound (d)

The compound model can be represented as,

It is a carboxylic acid with the 3 carbon straight chain which attaches methyl group to C₂ and cyclopentyl group to C₃. This has C₂ chiral carbon with optically active compound.

The first highest, second and third consecutive groups can be viewed in the anti-clockwise direction.

The IUPAC name can be named as (S)-3-cyclopentyl-2-methylpropanoic acid.