Abstract
Methyl 1-aryl-7-nitro-1H-thiopyrano[4,3,2-cd]indazol-4-carboxylates 2 and 1,5-diaryl-7-nitro-1,5-dihydropyrazolo[3,4,5-de]- cinnolines 4 were prepared based on 1-aryl-3-formyl-4,6-dinitro-1H-indazoles 1, which were synthesised previously starting from 2,4,6-trinitrotoluene.
References
1.
Vinogradov V.M., Starosotnikov A.M., Shevelev S.A.
Mendeleev Communications,
2002
2.
Mezheritskii V.V., Tkachenko V.V.
Advances in Heterocyclic Chemistry,
1990
3.
10.1070/MC2002v012n05ABEH001642_bib3
Tumkevicius
Liebigs Ann. Chem.,
1703
4.
10.1070/MC2002v012n05ABEH001642_bib4
Werbel
Adv. Pharmacol. Ther., Proc. 7th Int. Congr. Pharmacol., vol. 10,
1979