Organic Chemistry Practice Problems R and S Configuration Practice Problems Solution: Consider the cyclohexane derivative below and answ...

Solution: Consider the cyclohexane derivative below and answer all associate questions. a) Complete the Newman projection looking down the direction indicated. Add all H's and alkyl groups in the correct positions directly on the scaffolds below. b) What is the R/S configuration of all three stereocenters, use the numbering above to indicate which center you are referring to. c) What is the conformation of each group in II (axial, equtorial)?  C1 t-butyl ______  C3 t-butyl _______  methyl  _________ d) Calculate all the interactions for each conformer. Use the table on the next page to assist you. CIRCLE which of the two forms is more stable. I _______________________________________ kcal/mol II _______________________________________ kcal/mol  

Problem

Consider the cyclohexane derivative below and answer all associate questions.

a) Complete the Newman projection looking down the direction indicated. Add all H's and alkyl groups in the correct positions directly on the scaffolds below.

b) What is the R/S configuration of all three stereocenters, use the numbering above to indicate which center you are referring to.

c) What is the conformation of each group in II (axial, equtorial)? 

C1 t-butyl ______  C3 t-butyl _______  methyl  _________

d) Calculate all the interactions for each conformer. Use the table on the next page to assist you. CIRCLE which of the two forms is more stable.

I _______________________________________ kcal/mol

II _______________________________________ kcal/mol

 

Additional Practice Problems

R and S Configuration

R and S Configuration

Q. Determine the R and S configuration of the following compound. 

Solved • Thu Sep 15 2016 15:23:14 GMT-0400 (EDT)

R and S Configuration

Q. Determine the absolute stereochemistry for the following molecule

Solved • Fri Aug 19 2016 17:02:39 GMT-0400 (EDT)

R and S Configuration

Q. Draw the molecule using bondline structure. (4S,5R)-4,5-dimethylhept-1-yne

Solved • Thu Aug 04 2016 09:53:10 GMT-0400 (EDT)