1. (4 pts) Complete the following reactions by adding the missing part: either the starting compound, the necessary reagents and conditions, or the expected major product.
a)
b)
2. (4 pts) Write a complete mechanism for the HCl-catalyzed addition of methanol to 1,2-epoxybutane. Show all steps and electron-pushing arrows.
3. (2 pts) Sulfoxides can be chiral. Write both enantiomers for methyl phenyl sulfoxide and identify the R and S configurations.