Which of the following chiral compounds is(are) S enantiomer(s)?

Question

Quizplus · Accepted Answer

The S enantiomer has priority groups arranged in a counterclockwise manner around the chiral center. In compound I, the priority groups around the chiral carbon (H, COOH, OCH3, and CH3) are arranged in a counterclockwise manner, indicating that it is the S enantiomer. In compound II, the priority groups around the chiral carbon (H, NH2, C6H5, and CH3) are arranged in a clockwise manner, indicating that it is the R enantiomer. In compound III, there is no chiral center present. Therefore, the correct answer is A, as only compound I is the S enantiomer.

Which of the Following Chiral Compounds Is(are) S Enantiomer(s)