ISSN:
0947-3440
Schlagwort(e):
Pyridines
;
Chemistry
;
Organic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
2-[(Chloroacetyl)amino]acrylonitriles 1 and 3-[(chloroacetyl)-amino]propionitriles 4 were allowed to react with pyridine to form the 1-(4-amino-3-pyridyl)pyridinium salts 3 and 1-(4-amino-5,6-dihydro-3-pyridyl)pyridinium salts 6. Dehydrogenation of 6 with bromine in glacial acetic acid afforded 1-(4-amino-3-pyridyl)pyridinium bromides 7. Treatment of 3 and 7 with hydrazine hydrate yielded the 3,4-diamino-2(1H)-pyridinones 8. Analogously to other ortho-diamines, the substituted [1,2,5]thiadiazolo[3,4-c]pyridin-4-one 10, [1,2,5]selenadiazolo[3,4-c]pyridin-4-one 11, and further derivatives were obtained from 8. N-(Chloroacetyl) derivatives of acetylacetoneimide 13 and 3-oxo-3-phenyl-2-(phenylhydrazono)propionamide 17 were treated with pyridine to give 1-(3-pyridyl)-pyridinium salts 14 and 18, respectively.
Zusätzliches Material:
2 Tab.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/jlac.1995199505115
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