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  • 1
    Electronic Resource
    Electronic Resource
    Reactions with pyrrolidine-2,4-diones, I. New synthesis of pyrano[2,3-c]pyrrole and pyrrolo[3,4-b]pyridine systems (1982)
    Springer
    Monatshefte für Chemie 113 (1982), S. 475-484 
    Details
    ISSN: 1434-4475
    Keywords: Bis-2,4,6-trichlorophenyl malonates ; 1,5-Diaryl-1,5-dihydro-4-amino-2H-pyrrol-2-ones ; 1,5-Diarylpyrrolidine-2,4-diones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Synthese einiger substituierter 4-Hydroxy-2,5,6,7-tetrahydro-pyrano[2,3-c]pyrrol-2,5-dione (5) und 4-Hydroxy-1,2,6,7-tetrahydro-5H-pyrrolo[3,4-b]pyridin-2,5-dione (6) gelingt durch Reaktion von 1,5-Diaryl-pyrrolidin-2,4-dion (1) bzw. 1,5-diaryl-1,5-dihydro-4-amino-2H-pyrrol-2-on (3) mit Malonsäure-bis-2,4,6-trichlorphenylester (4).
    Notes: Abstract The synthesis of some substituted 4-hydroxy-2,5,6,7-tetrahydro-pyrano[2,3-c]pyrrole-2,5-diones (5) and 4-hydroxy-1,2,6,7-tetrahydro-5H-pyrrolo[3,4-b]pyridine-2,5-diones (6) by reacting 1,5-diaryl-pyrrolidine-2,4-diones (1) and 1,5-diaryl-1,5-dihydro-4-amino-2H-pyrrol-2-ones (3) with bis-2,4,6-trichlorophenyl malonates (4) is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00799923
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  • 2
    Electronic Resource
    Electronic Resource
    Benzimidazole condensed ring systems, VI: Organic azides in heterocyclic synthesis, X: Synthesis of some substituted pyrimido[1,6-a]-benzimidazoles as potential antimicrobial agents (1989)
    Springer
    Monatshefte für Chemie 120 (1989), S. 1159-1164 
    Details
    ISSN: 1434-4475
    Keywords: Condensed benzimidazo-uracils ; Tricyclic pyrimido[1,6-a]benzimidazoles ; Geminal diazido compounds ; “Staudinger reaction”
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Synthese von 3-Chlor-2-alkyl-pyrimido[1,6-a]benzimidazol-1(2H)-onen (2 a, b) und von 4,4-Dichlor- und 4,4-dibrom-pyrimido[1,6-a]benzimidazol-1,3(2H,4H)-dionen (3 a, b, 4) wird beschrieben. Diese Verbindungen lassen sich zu den entsprechenden Azido- (5, 6), Amino- (8), Morpholino- (9 a, 10, 11), Piperidino- (9 b), Cyano- (12) und Methoxy- (13) Derivaten umwandeln.
    Notes: Summary The syntheses of 3-chloro derivatives of 2-alkyl-pyrimido[1,6-a]benzimidazol-1(2H)-ones2a, b as well as of 4,4-dichloro and 4,4-dibromo derivatives of 2-alkylpyrimido[1,6-a]benzimidazole-1,3(2H,4H)-diones3 a, b and4 are reported. Methods for converting some of the chloro compounds to azido (5, 6), amino (8), morpholino (9 a,10,11), piperidino (9 b), cyano (12), and methoxy (13) derivatives of the adopted tricyclic system are also described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809299
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    Paper (German National Licenses)
    Fulltext
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