S[C:2]1[S:3][C:4]2[CH:10]=[C:9]([N+:11]([O-:13])=[O:12])[CH:8]=[CH:7][C:5]=2[N:6]=1.[NH3:14]>>[NH2:14][C:2]1[S:3][C:4]2[CH:10]=[C:9]([N+:11]([O-:13])=[O:12])[CH:8]=[CH:7][C:5]=2[N:6]=1It has also been reported [see J. Amer. Chem. Soc. 49, 1748 (1927)] that treatment of 2-mercapto-6-nitrobenzothiazole with concentrated aqueous ammonia under pressure at 160° C. followed by crystallization from alcohol and treatment with bone black gives 2-amino-6-nitrobenzothiazole in small yield.
Loading…