in tetrahydrofuran (N2), Au complex and THF at room temp. treated under stirring with 5 equiv. of Me3SiN3 in THF, reacted for 5 h; filtered (celite), evapd.(vac.), washed (hexanes), filtered, dried (vac.);

Tl(CH3C(O)CHC(O)CH3) in methanol; toluene Tl compd. (1.05 equiv.) was added to suspn. of Au complex in toluene; reacted for 4 h; filtered through Celite; azide was added to filtrate; MeOH was added; stirred for 20 h; filtered through Celite; concd. (vac.); pentane added; elem. anal.;