Draw structure or product(s) formed when 4-methyl-1,3-hexadiene reacts with
a) 1 equivalent HBr
b) excess HBr
c) excess of OsO4 followed by NaHSO3
d) KMnO4

I really need help understanding b & c

Draw structure or products formed when 4methyl13hexadiene reacts with a 1 equivalent HBr b excess HBr c excess of OsO4 followed by NaHSO3 d KMnO4 I really need class=