Data Analysis Questions for Methyl Acetoacetate

A. Polarimetry

a. What is the rotation for the reduction?

b. Why?

c. Does it support synthesis of methyl 3-hydroxybutyrate? Why or why not?

B. Percent Yield

a. What was your percent yield?

b. Is this good or bad?

c. Why?

d. Were there any errors observed?

e. What caused these errors?

f. Why do the errors give you the results in the experiment?

C. IR

a. IR functional group region analysis

i. What peaks are present that should be present?

ii. What peaks are absent that should be absent?

iii. Are there any peaks present or absent that should not be?

iv. What conclusion can you draw about the functional group region?

b. IR fingerprint region analysis

i. What peaks are present that should be present?

ii. What peaks are absent that should be absent?

iii. Are there any peaks present or absent that should not be?

iv. What conclusion can you draw about the fingerprint region?

c. IR final analysis

i. Does the IR support the synthesis of methyl 3-hydroxybutyrate?

ii. Why or why not?

D. NMR

a. Is the correct number of peaks present?

i. If there are any missing, which ones?

ii. Is the chemical shift correct for each peak?

iii. Is the splitting pattern for each peak correct?

iv. Is the integration of each peak correct?

b. Are there any peaks absent? If yes, which ones?

c. Are there any peaks present that should not be?

i. How many?

ii. What are the chemical shifts, splitting pattern and integration?

iii. What is the potential source of these peaks?

d. NMR final analysis

i. Does the proton NMR support the synthesis of methyl 3-hydroxybutyrate?

ii. Why or why not?