Ap. Krapcho et Sn. Haydar, [1]BENZOTHIOPYRANO[4,3,2-CD]-INDAZOLE-1-ETHANAMINE - A NOVEL HETEROCYCLE, Journal of heterocyclic chemistry, 34(5), 1997, pp. 1637-1638
Treatment of thioxanthenone 6 with N-(2-dimethylaminoethyl)hydrazine l
ed to the benzothiopyranoindazole 3, a novel heterocycle, along with t
he expected compound 8.