Chapter 4.14, Problem 33CC

Interpretation Introduction

Interpretation:

TheHaworth projectionsof cis and trans-1-3-dimethylcyclohexane are drawn and its stability should be comparatively explained.

Concept Introduction:

Haworth projection:

• The representation of cyclic chemical compounds by normal ring structure and the substituents can either pointing up or down on this ring is called Haworth projection.

Conformational isomers:

• The two or more compounds have same molecular formula and different structural formulas from the result of C-C single bond rotations are called conformational isomers.
• The atom or group is occupy at similar to a vertical axis passing through the chair conformationof Cyclohexane ring is called axial position.
• The atom or group is occupy at similar to horizontal axis passing through the chair conformationof ring is called equatorial position.
• The substituents are occupy in equatorial position is more stable than axial because of the 1,3-diaxial interactions are less in equatorial position.