Formation of 3,3,5,7-tetranitrooxindole and 3,5,7-trinitroindazole by nitration of oxindole

DOI: 10.1016/S0040-4039(96)02139-9

Source and publish data:

Tetrahedron Letters p. 9263 - 9266 (1996)

Update date:2022-08-05

Topics:

Authors:

Bergman, Jan

Bergman, Solveig

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Article abstract of DOI:10.1016/S0040-4039(96)02139-9

Nitration (HNO₃/H₂SO₄) of oxindole gave 3,3,5,7-tetranitrooxindole (1c), which readily underwent ring-opening and decarboxylation to 4,6-dinitro-2-(dinitromethyl)aniline (4b), which in turn could be cyclized to 3,5,7-trinitroindazole (5).

Full text of DOI:10.1016/S0040-4039(96)02139-9

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