81889-96-5Relevant articles and documents
REACTION OF 1-AMINOBENZIMIDAZOLES WITH β-DIKETONES. SYNTHESIS OF PYRIDAZINOBENZIMIDAZOLES
Kuz'menko, V. V.,Komissarov, V. N.,Simonov, A. M.
, p. 314 - 318 (2007/10/02)
The action of acetyl- and benzoylacetone on 1-aminobenzimidazoles in the presence of catalytic amounts of zinc chloride was used to synthesize 1-ylidene derivatives, which at higher temperatures undergo thermal cyclization to 2,4-disubstituted pyridazinobenzimidazoles.