Question

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>

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Summary

California2025-02-01Y316.67100%67%0%
Florida2025-02-01Y33.3333%0%0%
Great Lakes2025-02-01Y610.0050%50%0%
Lower Mid-Atlantic2025-02-01Y68.3383%0%0%
Midwest2025-02-01Y611.6783%17%17%
North2025-02-01Y310.0067%33%0%
Northeast2025-02-01Y512.00100%20%0%
Pacific Northwest2025-02-01Y25.0050%0%0%
South Central2025-02-01Y215.00100%50%0%
Southeast2025-02-01Y47.5075%0%0%
Upper Mid-Atlantic2025-02-01Y910.0067%33%0%
Upstate NY2025-02-01Y33.3333%0%0%

Data

Cornell DCornell C0000
RIT ARIT B0000
ESF ABinghamton A010010