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ChemInform Abstract: Formation of 3,3,5,7-Tetranitrooxindole and 3,5,7-Trinitroindazole by Nitration of Oxindole.

โœ Scribed by J. BERGMAN; S. BERGMAN

Book ID
101844755
Publisher
John Wiley and Sons
Year
2010
Weight
25 KB
Volume
28
Category
Article
ISSN
0931-7597

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โœฆ Synopsis

1997 indole derivatives, isoindole derivatives indole derivatives, isoindole derivatives R 0140 14 -104 Formation of 3,3,5,7-Tetranitrooxindole and 3,5,7-Trinitroindazole by Nitration of Oxindole.

-The tetranitrooxindole (I) is obtained by reaction of oxindole with HNO3/H2SO4 as one of the products. Its treatment with HNO3/NO4 leads to the rearranged compound (II). The reaction mechanism seems to include ring-opening, decarboxylation and reduction. -

๐Ÿ“œ SIMILAR VOLUMES

Formation of 3,3,5,7-tetranitrooxindole
Formation of 3,3,5,7-tetranitrooxindole and 3,5,7-trinitroindazole by nitration of oxindole
โœ Jan Bergman; Solveig Bergman ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 216 KB

Absfract: Nitration (IINO3/II2SO4) of oxindole gave 3,3,5,7-teuaniuooxindole (1~). which readily underwent ring-opening and decarboxylation to 4,6-diniuo-2.(dinitromethyl)aniline (4b), which in turn could be cyclizcd to 3,5,7-uinitroindazole (5).