Place Asterisks at All the Chirality Centers in Each Molecule

question 21

Multiple Choice

Place asterisks at all the chirality centers in each molecule below.
-The following atoms are commonly encountered in organic molecules. For which is it not possible to isolate enantiomers due to rapid inversion?

• A) trivalent phosphorus
• B) trivalent nitrogen
• C) divalent sulfur
• D) trivalent sulfur
• E) both b and c

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