Synthesis of 1,4-dihydroimidazo[5,1-c]-1,2,4-triazin-4-ones and imidazo[5,1-c]-1,2,4-triazoles / Bezmaternykh M.A., Mokrushin V.S., Pospelova T.A. // Chemistry of Heterocyclic Compounds. - 1999. - V. 35, l. 11. - P. 1349-1356.

ISSN:
00093122
Type:
Article
Abstract:
Azo compounds obtained by the coupling of 5-diazoimidazoles with diethyl esters of nitro-, chloro-, bromo-, and acetylaminomalonic acids under conditions of base catalysis are cyclized to give 1,4-dihydroimidazo[5,1-c]-1,2,4-triazin-4-ones or imidazo[5,1-c]-1,2,4-triazoles. The chloro, bromo, and nitro groups in the bicyclic products are readily replaced by action of nucleophiles. The imidazotriazinones are converted to chloroimidazotriazines by reaction with thionyl chloride or phosphorus oxychloride. ©1999 KluwerAcademic/Plenum Publishers.
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Affiliations Urals State Technical University-UPI, 620002 Yekaterinburg, Russian Federation
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Correspondence Address Urals State Technical University-UPI, 620002 Yekaterinburg, Russian Federation
CODEN CHCCA
Language of Original Document English
Abbreviated Source Title Chem. Heterocycl. Compd.
Source Scopus