Organic Chemistry Laboratory I - Chem 341

Quiz 9c

1. What is the solid material that precipitates out of solution as the elimination proceeds? (2 pts)

The solid material that precipitates out of solution is potassium bromide.

2. Circle the major organic product from the following reaction. (2 pts)

3. Sketch the ¹H NMR spectrum for the following compound; label the peaks with corresponding protons and include the relative integration numbers for each signal. (3 pts)

1/2 pt for correct number of peaks, splitting patterns, integration number, and chemical shift

4. Circle the structure most consistent with the following ¹H NMR spectrum. (2 pts)

5. Why is the vacuum adapter of the apparatus to be fitted with a drying tube throughout the course of the elimination reaction and distillation ? (2 pts)

The drying tube will be able to absorb moisture from the air. Without this, water from the air would condense on the inside of the flask since you are cooling it in an ice bath.