Fig. 1: Existing applications of O2NO-I(III) compounds and known accesses to furazans.

a Known O2NO-I(III) compounds 1a–c. b Reported works utilizing O2NO-I(III) reagents 1a and 1c in a fully-exo fashion. c Reported strategies for the preparation of furazan derivatives. d This work: a O2NO-I(III) compound 1d and its application for synthesis of furazans as a nitrating reagent.