4. (30 points) Draw the major organic product or products for each of the following. Be sure to include stereochemistry where appropriate. Assume each is in the most appropriate solvent. Assume kinetic conditions. Remember "no reaction" may be an answer.
a)
H$_3$CO
heat
b)
OCH$_3$
heat
c)
HO
OH
Cl
Si
NR$_3$
d)
Br$_2$
light
e)
Na, NH$_3$(l)