Consider the following compounds:

Conformational analysis reveals that, though compound A exists in a chair conformation, compound B does not.
(a) Make a model of A. Draw chair conformations and label the substituent's as equatorial or axial. Circle the most stable conformation.
(b) Make a model of B. Consider both transannular and gauche interactions in your analysis of its two chair forms. Discuss the steric problems of these conformations in comparison with those of A. Illustrate the key points of your discussion with Newman projections. Suggest a less satirically encumbered conformation for B.

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H,, catalyst