Reactions of Isothiocyanates with Cyanothioformamides. Cyclization of 5-Imino-4-thioxo-2-imidazolidones and 5-Imino-2,4-imidazolidinedithiones to 5,7-Dihydrodiimidazo[4,5-b: 4',5’-e ]pyrazine-2,6(1H,3H)-diones and -dithiones

Journal of Organic Chemistry

Volumn 50, Issue 19, 1985, Pages 3431-3434

  Khattak, Ismail ^a   Ketcham, Roger ^b   Schaumann, Ernst ^c   Adiwidjaja, Gunadi ^c  

^a GOMAL UNIVERSITY   (Pakistan)

^b UNIVERSITY OF CALIFORNIA   (United States)

^c UNIVERSITY OF HAMBURG   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000577632     PISSN: 00223263     EISSN: 15206904     Source Type: Journal    
DOI: 10.1021/jo00219a001     Document Type: Article

References (7)

1. Part 8 of the series “Heterocyclic Ring-Closure Reactions”. Part 7: Ketcham, R.; Schaumann, E.; Niemer, T. Synthesis 1980, 869.
2. Ketcham, R.; Schaumann, E. J. Org. Chem. 1980, 45, 3748.
3. Dieckmann, W.; Kämmerer, H. Ber. Dtsch. Chem. Ges. 1905, 38, 2977; 1907, 40, 3737.
4. Papadopoulos, E. P. J. Org. Chem. 1979, 44, 3858.
5. Khattak, I.; Ketcham, R. J. Chem. Soc., Chem. Commun. 1983, 260. Gokel, G. W.; Durst, A. D. Synthesis 1976, 168.
6. Hirohashi, R. Chiba Daigaku Kogakubu Kenkyu Hokoku 1972, 23 (44), 169–237. (11) “Pyrolytic Methods in Organic Chemistry”; Academic Press, Inc.: New York, 1980; p 141.
7. Reissert, A.; Bruggemann, K. Ber. Dtsch. Chem. Ges. 1924, 57, 981. Fieser, L. F.; Fieser, M. “Reagents for Organic Synthesis”; John Wiley and Sons, Inc.: 1976; Vol. 1, p 834.