1) Choose the correct molecules, A and B that would be part of the sequence show

ID: 709188 • Letter: 1

Question

1) Choose the correct molecules, A and B that would be part of the sequence shown. The 1H

NMR spectrum for the starting material A is provided. Note the formula for A is not provided as,

if you know the chemistry for the conversion of A to B, and B to the product, then you do not

need the spectrum at all to answer the question.

2) Which of the following reagents would be best for this reaction?

A) H3PO4

B) KMnO4, KOH,H2O

C) Jones' reagent (H2CrO4)

D) OsO4

E) PCC in CH2Cl2

F) H2SO4

G) HCl + ZnCl2

H) none of the above

1) g

2) E is the correct answer.

with strong acidic oxidizing agents, you will end up with acids but not aldehydes. So PCC in CH2Cl2 is the best choice for this conversion.

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