Polar addition of HN3 to norbornadiene (1) affords exo-5-azidonorborne
ne (2, 70%). Subsequent azidomercuration-demercuration of 2, performed
by using in situ generated Hg(N3)2 followed by reductive demercuratio
n, proceeds stereospecifically to afford exo-2,exo-5-diazidonorbornane
(5, 68% yield).