1. Draw the arrow-pushing mechanism for the reaction below from start to finish. (3 Points)
a. Indicate the correct stereochemistry for intermediate A. (1 Point)
N
HBr$_3^-$
pyridinium perbromide
MW = 320 g/mole
CH$_3$CO$_2$H
A
K$^+$OH
mp = 236-237 $^\circ$C triethylene glycol