Hydrochloric Acid → HCID 135829371, compound
Reaction equation
C1(C[O:5][C:6]2[C:7]3[C:11]([CH:12]=[CH:13][CH:14]=2)=[N:10][N:9]([CH3:15])[C:8]=3[S:16]([NH2:19])(=[O:18])=[O:17])CC1.Cl>C(O)(=O)C>[OH:5][C:6]1[C:7]2[C:11]([CH:12]=[CH:13][CH:14]=1)=[N:10][N:9]([CH3:15])[C:8]=2[S:16]([NH2:19])(=[O:18])=[O:17]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A mixture comprising 62 g (221 mmol) of 4-cyclopropylmethoxy-2-methyl-2H-indazole-3-sulfonamide, 120 ml of acetic acid and 120 ml of concentrated hydrochloric acid, was stirred at 80° C. for one hour. After concentrating acetic acid-hydrochloric acid, the mixture was poured into ice water. Crystals were collected by filtration and washed with water. Further, the crystals were washed with IPE and dried to obtain 35.1 g (yield: 70%) of the desired product. Melting point: 180°-181° C.