Synthesis of new 1,2,3-triazolo[1,2-a]benzotriazoles or 2,3-benzo-1,3a,6,6a-tetraazapentalenes
β 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 1,2,3βtriazolo[1,2β__a__]benzotriazoles or 2,3βbenzoβ1,3a,6,6aβtetrazapentalenes to submit to biological assays. The derivatives were obtained by deoxycyclization reactions of appropriate nitrophenylβ1,2,3βtriazole derivatives and by thermal dec
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