1,3-DIPOLAR CYCLOADDITION SYNTHESES OF 3,3'-BI(2-PYRAZOLINES), 3,3'-BIPYRAZOLES AND 3,3'-BI(1,2,4-TRIAZOLES)

Citation
Am. Farag et al., 1,3-DIPOLAR CYCLOADDITION SYNTHESES OF 3,3'-BI(2-PYRAZOLINES), 3,3'-BIPYRAZOLES AND 3,3'-BI(1,2,4-TRIAZOLES), Gazzetta chimica italiana, 123(8), 1993, pp. 467-470
Citations number
22
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemistry
Journal title
ISSN journal
0016-5603
Volume
123
Issue
8
Year of publication
1993
Pages
467 - 470
Database
ISI
SICI code
0016-5603(1993)123:8<467:1CSO33>2.0.ZU;2-A
Abstract
3,3'-bi(2 -pyrazolines), 4, 6 and 8, and 3,3'-bi(1,2,4-triazolo[3,4-a] isoquinolines), 13-16, have been prepared in good yields via 1,3-dipol ar cycloaddition reactions of bis(arylnitrilimines), 3, with acrylonit rile, acrylamide, benzalacetophenone and 3,4-dihydroisoquinolines, 12, respectively. 3,3'-bipyrazoles 10 and 11 have been prepared in excell ent yields by reaction of 3 with dibenzoylmethane and benzoylacetonitr ile, respectively. The regiochemistry of the cycloadducts is discussed