Chemistry of Heterocyclic Compounds p. 735 - 740 (1980)
Update date:2022-08-17
Topics:
Zhilina, O.D.
Shagalov,L. B.
Vasil'ev, A. M.
Suvorov, N. N.
It was established that products of monosubstitution of 4-nitro- and 7-nitro-3-formyl<4,5>benzindoles and products of disubstitution of 4,8-dinitro- and 7,8-dinitro-3-formyl<4,5>benzindoles are formed in low yields in the nitration of 3-formyl<4,5>benzindole with sodium nitrate in concentrated sulfuric acid.Similar nitration of 3-formyl<6,7>benzindole leads to 9-nitro- and 5,6-dinitro-3-formyl<6,7>benzindoles.The 3-formylnitrobenzindoles obtained were converted to nitrovinyl derivatives by condensation with nitromethane.
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