Final answer:
To draw the stereoisomer of cis-1,2-dimethylcyclohexane, switch the position of the methyl groups, placing them on the opposite sides of the ring. This gives us trans-1,2-dimethylcyclohexane.
Step-by-step explanation:
Cis-1,2-dimethylcyclohexane is a molecule with two methyl groups on adjacent carbons in a cyclohexane ring. In order to draw its stereo-isomer, we need to consider the cis and trans orientation of the alkyl groups. In the cis isomer, the two methyl groups are on the same side of the ring, while in the trans isomer, they are on opposite sides.
To draw the stereoisomer of cis-1,2-dimethylcyclohexane, we would simply switch the position of the methyl groups, placing them on the opposite sides of the ring. This gives us the trans-1,2-dimethylcyclohexane stereoisomer. The two isomers are shown below:
Cis-1,2-dimethylcyclohexane:
CH3-----CH3
Trans-1,2-dimethylcyclohexane:
CH3-----CH3