Question

Write the structure of the trans isomer of but-2-enoic acid

Answer 1

Answer : The structure of the trans isomer of but-2-enoic acid are shown below.

Explanation :

Cis-trans isomers :

The atoms of groups attached to each olefinic carbon (double bond) are given priority as per the sequence rule.

If the higher priority groups are present on same sides across the double bond, the geometrical isomer is said to be cis-isomer.

If the higher priority groups are present on opposite sides across the double bond, the geometrical isomer is said to be trans-isomer.

The given compound is, but-2-enoic acid.

The structure of the cis-trans isomer of but-2-enoic acid are shown below.