Heterocyclic ring-closure reactions. 8. 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
Heterocyclic ring-closure reactions. 8. 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
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作者:El-Sharief, A. M. Sh.、Ketcham, Roger、Schaumann, Ernst
DOI:——
日期:——
EELSHARIEF, A. M. SH.;KETCHAM, ROGER, PHOSPH., SULFUR AND SILICON AND RELAT. ELEM., 46,(1989) N-2, C. 83-86
作者:EELSHARIEF, A. M. SH.、KETCHAM, ROGER
DOI:——
日期:——
KHATTAK, I.;KETCHAM, R.;SCHAUMANN, E.;ADIWIDJAJA, G., J. ORG. CHEM., 1985, 50, N 19, 3431-3434
作者:KHATTAK, I.、KETCHAM, R.、SCHAUMANN, E.、ADIWIDJAJA, G.
DOI:——
日期:——
Heterocyclic ring-closure reactions. 8. 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