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Synthesis of new 1,2,3-triazolo[1,2-a]benzotriazoles or 2,3-benzo-1,3a,6,6a-tetraazapentalenes

✍ Scribed by Giuliana Biagi; Irene Giorgi; Oreste Livi; Valerio Scartoni; Pier Luigi Barili


Book ID
118284443
Publisher
Journal of Heterocyclic Chemistry
Year
1995
Tongue
English
Weight
504 KB
Volume
32
Category
Article
ISSN
0022-152X

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## Abstract This paper continues the synthesis of new 1,2,3‐triazolo[1,2‐__a__]benzotriazoles or 2,3‐benzo‐1,3a,6,6a‐tetrazapentalenes to submit to biological assays. The derivatives were obtained by deoxycyclization reactions of appropriate nitrophenyl‐1,2,3‐triazole derivatives and by thermal dec

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With sodium borohydride in tetrahydrofuran/ethanol (5 : 1). the product ( I ) gives a 75 yield of a compound, m.p. 233 "C, that is identical with the recently prepared 2-(diphenylmethyl)imidaz0le[~1. When product ( I ) is boiled for 2 h in tetrahydrofuran/water (2: I ) it affords 2-(hydroxy-dipheny