In addition to nitro groups, tin (II) chloride can reduce azide groups to amines in the presence of at least two equivalents of MeOH. Using ChemDraw, propose a mechanism for this reaction (NOTE: The MeOH and SnCl2 are premixed prior to addition of the azide, similar to the premixing of conc. HCl with SnCl2).
SnCl2, MeOH,
RNN=N
NEN=NH
+Sn(OMe)2Cl2
benzene