CHEM 3428 Worksheet 5
Nan TA/Section Score
Show all work, hand write legibly, and use complete sentences. Use correct units when _(_())_(_()) /64 applicable.
Rubric Scoring
For 3-point questions
3 points - complete, correct without errors
2 points - on the right track, minimal omissions, or errors
1 point - attempt made, omissions, and errors
0 points - no answer
Part One: ^(1)H NMR Analysis of Epoxidation Reactions
( 10 pts ) Assume the epoxidation reaction with Oxone had a 100% yield. Calculate the percent purity and the corrected percent yield for the epoxidation with Oxone from Spectrum A shown below. Report the corrected percent yield in proper format. Hand draw the structure of the desired product on the spectrum below. Label the non-equivalent protons using lowercase letters. Assign the peaks in the spectrum below to protons in the desired product. Draw the structure(s) of the impurity(ies) and label the protons. Assign the remaining peaks according to what impurity(ies) you think you have. Be clear about which peak integrations you are using to determine the percent purity (refer to your drawing) and how you arrived at your answer.