Journal
CHEMICAL COMMUNICATIONS
Volume 52, Issue 27, Pages 4914-4917Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6cc01436d
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A practical synthesis of fused benzimidazoles 5 has been developed by simply heating o-halonitrobenzenes 1 with tetrahydroisoquinolines 2. In this transformation, 2 played multiple roles as a building block, base and a double hydride donor in a cascade of uncatalyzed aromatic substitution, reduction of the nitro group, oxidation of the alpha-methylene group and condensation.
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