Question

The molecules are anethole, cinnamaldehyde, eugenol, (+)-carvone, and (-)-carvone. Circle the chirality centers in all of the molecules, and tell if it is R or S. Square the stereocenters. Draw the stereoisomers of the molecules and tell if diastereomers or enantiomers of the original structure.

Answer 1

In Anethole, cinnmaldehyde, eugenol, there are no Chiral centre, so the molecule is achiral,

And the (+) - carvone, (-) - carvone chiral centres and its corresponding R&S notation is clearly depicted in the following picture,