Nomenclature of these compounds usually involves the terms “syn” and “anti” that are preserved by rotation around a single bond. For 10 points each:
[10m] Name these organic compounds that have multiple chiral centers, but unlike meso compounds, are not superimposable on their mirror images.
ANSWER: diastereomers [or diastereoisomers; prompt on stereoisomers; reject “enantiomers”]
[10e] The diastereomer nomenclature terms “threo” and “erythro” come from examples of these compounds called threose and erythrose. Dextrose is an alternate name for right-handed glucose, which is one of these biomolecules.
ANSWER: sugars [or saccharides]
[10h] Diastereoselective reactions are governed by this phenomenon, observed in chiral ketones by Donald Cram. Nguyễn Trọng Anh incorporated the Burgi–Dunitz angle to Hugh Felkin’s model of this phenomenon.
ANSWER: asymmetric induction
<MY, Chemistry>