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Gabriel-Isay synthesis

Diaminopyrimidines cyclocondense with symmetrical 1,2-dicarbonyl compounds to give pteridines 1 Gabriel-Isay synthesis) ... [Pg.426]

Gabriel-Isay synthesis (pteridine) Gabriel synthesis (thiazole) 207 Gassmann synthesis (indole) 135 Gattermann synthesis, HCN-free 509 Gewald synthesis (thiophene) 97 Graebe-Ullmann reaction 266 Guareschi synthesis (2-pyridone) 384... [Pg.631]

Since the structures of the Gabriel-Isay condensation products of 5,6-diaminopyrimidines with unsymmetrical 1,2-dicarbonyl or a-substituted monocarbonyl compounds are always ambiguous, the synthesis of 6- and 7-substituted pteridines by an unambiguous approach was and still is a necessity and an important challenge. [Pg.313]

See other pages where Gabriel-Isay synthesis is mentioned: [Pg.309]    [Pg.309]    [Pg.714]    [Pg.309]    [Pg.447]    [Pg.934]    [Pg.680]    [Pg.57]   
See also in sourсe #XX -- [ Pg.426 ]



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