Question

Draw and label the E and Z isomers for each of the following:

a. CH₃CH₃CH = CHCH₃

b. CH₃CH₃CH₂CH₂

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CH₃CH₂C=C CH₂Cl

|

CH₃CHCH₃

c. CH₃CH₂C=CHCH₂CH₃

|

Cl

d. HOCH₂CH₂ C = C C ≡ CH

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O = CH C(CH₃)₃

Short answer

The E and Z isomers of the given compounds are:

a)

b)

c)

d)

Step-by-step solution

Steps to follow while drawing E and Z isomers.

1. Assign the priority order to the groups on the basis of atomic number. The higher atomic number getsthe highest priority.

2. If higher priority groups are on the same side, then it will be a Z isomer as shown below

3. If higher priority groups are on the different side, then it will be an E isomer as shown below.

Subpart (a) The E and Z isomer of the compound a.

As per the steps followed, the isomers of CH₃CH₃CH = CHCH₃ are shown below.

Subpart (b) The E and Z isomer of the compound b.

As per the steps followed, the isomers of the given compound are.

Subpart (c) The E and Z isomer of the compound c.

As per the steps followed, the isomers of the given compound are.

Subpart (d) The E and Z isomer of the compound d.

As per the steps followed, the isomers of the given compound are.