120209-26-9Relevant articles and documents
NITRATION DE BENZIMIDAZOLES SUBSTITUES
Benchidmi, M.,Kihel, A. El,Essassi, E. M.,Knouzi, N.,Toupet, L.,et al.
, p. 605 - 612 (2007/10/02)
The mononitration of some 2-Alkyl-5(6)chloro-(or methyl-)benzimidazoles was carried out because the chemical literature results were ambiguous.Our work has shown that the nitro group was introduced in 6 (or 5) position.
A useful methodology for the synthesis of 2-methyl-4-nitrobenzimidazoles
Tian,Grivas
, p. 1283 - 1286 (2007/10/02)
Cyclocondensation of 3-nitro-1,2-benzenediamines 2 with 2,4-pentanedione provides a convenient route for the preparation of 2-methyl-4-nitrobenzimidazoles 3. A discrepancy in the literature regarding the 5-chloro-, 5-methoxy- and 5-methyl derivatives of the title compounds is discussed.