Ammonia → HCID 59702374, compound

Participants

Reaction Steps

To a solution of [7-(2,4-dichloro-phenyl)-2-methyl-2H-indazol-3-yl]-methanol from step 2 (0.153 g) in 2 mL of THF was added a 2 M ammonia in IPA solution (1.0 mL, 2.0 mmol), MgSO4 (0.910 g, 7.56 mmol), and 85% activated MnO2 (0.771 g, 7.54 mmol). The dark mixture was stirred for 2 d, then filtered thru CELITE® 521 (rinsing with dichloromethane) and concentrated to a yellow solid. Column chromatography (0→10% EtOAc/hexanes) afforded 7-(2,4-dichloro-phenyl)-2-methyl-2H-indazole-3-carbonitrile (20: R3=2,4-dichlorophenyl; 0.058 g; 39%; m.p. 137-139) as a white solid:

Provenance & Evidence