How many isomers can be drawn (constitutional and stereoisomers)for dimethycyclopropane?
A)2
B)3
C)4
D)6

Question

Quizplus · Accepted Answer

For dimethylcyclopropane, there are two constitutional isomers (different connectivity of atoms) possible: 1,1-dimethylcyclopropane and 1,2-dimethylcyclopropane. Additionally, each constitutional isomer has a stereoisomer due to the presence of stereocenters. The 1,1-dimethylcyclopropane has no stereocenters and is an achiral molecule. The 1,2-dimethylcyclopropane has one stereocenter and can exist as two different stereoisomers (enantiomers). Therefore, the total number of isomers possible for dimethylcyclopropane is 4.

How Many Isomers Can Be Drawn (Constitutional and Stereoisomers)for Dimethycyclopropane