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Organic Chemistry

Lecture 8 Objectives and Skills

Objectives

Understand use and application of Newman projections.
Explain the reasons for high energy (less stable) and low energy (more stable) conformations.
Understand the use and application of Fischer projections.
Convert between bond-line drawings, Newman projections, and Fischer projections.
Compare Fischer projections for stereochemical relationships.

Skills

Visualization and manipulation of 3D geometries from 2D images
Utilization of tangible model systems
Comparisons of fine details

This page is referenced by:

Lecture 8: Newman and Fisher Projections 4 image_header 2020-08-31T05:19:50-07:00
Objectives and Skills

KEY INFORMATION SUMMARY

PROBLEMS

Problem 8.1: Newman Projections

a. Convert the following Newman projections into bond-line drawings and indicate if any are duplicates (i.e. the same structure). SOLUTION
b. Convert the following bond-line drawings into Newman projections along the C2-C3 bond. Rotate your resulting projection to the lowest energy conformation. SOLUTION

If you made some mistakes or want to practice more, review the concepts that gave you trouble and work on this extra problem. If you're good, move to the problem below ;)

Problem 8.2: Fischer Projections
1. Label each of the following pairs of structures as enantiomers, diastereomers, or representations of the same compound (identical): SOLUTION
1. Convert the following bond-line drawings into Fischer projections with C1 at the top. SOLUTION
If you made some mistakes or want to practice more, review the concepts that gave you trouble and work on this extra problem. If you're good, move to the next lecture ;)