The AlCl3-promoted reactions of cycloalkanones with hydrazones are described. This approach represents a mild and operationally simple method to access 2,3-diaryl-4,5,6,7-tetrahydro-1H-indazoles and their analogues in good to moderate yields.
Corrigendum to “AlCl3-promoted reaction of cycloalkanones with hydrazones: A convenient direct synthesis of 4,5,6,7-tetrahydro-1H-indazoles and their analogues” [Tetrahedron Lett. 60 (2019) 150988]