Kemp-type elimination of 1-arylsulfonyl-3-iodo-1H-indazoles
An intriguing ring-opening reaction of 1-arylsulfonyl-3-iodo-1H-indazoles, which can afford the corresponding ortho-(arylsulfonylamino)benzonitriles under base catalysis, was obtained unexpectedly. Herein, the optimal reaction conditions were explored and