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Chapter 21: 4P (page 817)

Give the IUPAC name for each aldehyde.

a.2-isobutyl-3-isopropylhexanal

b. trans-3-methylcyclopentanecarbaldehyde

c. 1-methylcyclopropanecarbaldehyde

d. 3,6-diethylnonanal

Short Answer

Expert verified

a.

b

c

d

Step by step solution

01

IUPAC name of the carbonyl group

The first priority or number is given to the carbon of the carbonyl group. The suffix 鈥渁l鈥� is used in the parent name.

02

Structures of a, b, c, and d

a. The given compound has six carbon atoms in a chain. Aldehyde group, isobutyl group, and isopropyl group are attached to C-1, C-2, and C-3 atoms, respectively.

The structure of the given compound is shown below:

trans-3-methylcyclopentanecarbaldehyde

b. The given compound is composed of five carbon atoms in a cyclic form. Aldehyde group and methyl group are attached to C-1 and C-3 atoms, respectively. Both have different orientations in space.

The structure of the given compound is shown below:

trans-3-methylcyclopentanecarbaldehyde

c. The given compound has three carbon atoms in a cyclic form. Aldehyde group and methyl group are attached to the C-1 atom.

The structure of the given compound is shown below:

1-methylcyclopropanecarbaldehyde

d. The given compound has nine carbon atoms in a chain. Aldehyde group and ethyl groups are attached to C-1 and C-3, C-6 atoms, respectively.

The structure of the given compound is shown below:

3,6-diethylnonanal

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a.

b.
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