1. (4 points) Complete each of the following reactions by adding the missing part: either the starting compound, the necessary reagents and conditions, or the final major product. Show stereochemistry if it is specific.

a)

b)

c)

d)

2. (3 points) Write a complete mechanism for the reaction shown below. Show all steps and use electron-pushing arrows.

3. (3 points) Show a sequence of reactions that could be used to convert tert-butyl bromide into isobutyl bromide.