Question

Draw two cyclic constitutional isomers of trans-1,2-dimethylcyclobutane with the same size ring.

Answer 1

Explanation: Constitutional isomers are the isomers having same molecular formula but have different connectivity of groups.

The two cyclic constitutional isomers of trans-1,2-dimethylcyclobutane having same ring size are:

1. trans-1,1-dimethylcyclobutane
2. trans-1,3-dimethylcyclobutane

These two isomers are shown in the image attached below.