Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Synthesis of 1,4-dihydroimidazo[5,1-c]-1,2,4-triazin-4-ones and imidazo[5,1-c]-1,2,4-triazoles
AU - Bezmaternykh, M. A.
AU - Mokrushin, V. S.
AU - Pospelova, T. A.
PY - 1999/11/1
Y1 - 1999/11/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=27544515961
U2 - 10.1007/BF02252008
DO - 10.1007/BF02252008
M3 - Article
VL - 35
SP - 1349
EP - 1356
JO - Chemistry of Heterocyclic Compounds
JF - Chemistry of Heterocyclic Compounds
SN - 0009-3122
IS - 11
ER -
ID: 55809486