Ma. Abdallah et al., A CONVENIENT SYNTHESIS OF 5-AMINO-4-(2-BENZOTHIAZOLYL)PYRAZOLES, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 36(12), 1997, pp. 1175-1177
Reaction of 2-cyanomethylbenzothiazole 1 with hydrazonoyl halides 2A-D
in ethanol in the presence of sodium ethoxide affords 5-amino-4-(2-be
nzothiazolyl)pyrazoles 6.