Question

how many chiral centers are there in the compound below?

• your answer should be an integer.

provide your answer below:

Explanation:

Step1: Identify chiral center definition

A chiral center is a carbon atom bonded to four different groups.

Step2: Analyze each carbon atom

• The carbonyl carbon (C=O) has only three groups → not chiral.
• The first - OH - attached carbon: bonded to H, - OH, carbonyl group, and another carbon → four different groups → chiral.
• The second - OH - attached carbon: bonded to H, - OH, two different carbons (one with carbonyl and one with other groups) → four different groups → chiral.
• The third - OH - attached carbon: bonded to H, - OH, two different carbons (one with two - OH and one with terminal - OH) → four different groups → chiral.
• The terminal - OH - attached carbon: bonded to two H atoms (among its four bonds) → not chiral.

Answer:

3