week 2 - 2 - Chemistry S-20ab Week 2...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
We’ll focus on cyclohexane , most common ring size found in natural compounds: How should you draw the chair conformation of cyclohexane? H H H H H H H H H H H H H H H H H H H H H H H H H H H In the most stable conformation, two groups of H's can be identified: equatorial axial axial equatorial Cycloalkanes cyclopropane cyclobutane cyclopentane cyclohexane cycloheptane bond angles: 60 o ~90 o 108 o 109 o ~109 o strain energy: 9.17 6.58 1.24 ~0 ~0 per CH 2 (kcal/mol) Reading : Section 7.2 16
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Cyclohexanes: Interconversion of Chair Conformations Can you accomplish this “ring flip” with your models? Reading : Section 7.2 Chemistry S-20ab Week 2 94
Background image of page 2
Monosubstituted Cyclohexanes: Axial vs. Equatorial Reading : Section 7.3 Chemistry S-20ab Week 2 95
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Chemistry S-20ab Week 2 96 Energies of Axial vs. Equatorial Substitution The relative energy of axial vs. equatorial substitution is called the “
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/21/2010 for the course CHEM S20ab taught by Professor Mccarty during the Summer '10 term at Harvard.

Page1 / 9

week 2 - 2 - Chemistry S-20ab Week 2...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online