Abstract
An efficient TEMPO-air/cat. TEMPO-O2 oxidative protocol was developed to synthesize multisubstituted or fused tetracyclic benzimidazoles via a metal-free oxidative C-N coupling between the sp(3) C-H and free N-H of readily available N(1)-benzyl/alkyl-1,2-phenylenediamines.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Amination
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Benzimidazoles / chemical synthesis*
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Benzimidazoles / chemistry
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Catalysis
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Cyclic N-Oxides / chemistry*
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Magnetic Resonance Spectroscopy
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Metals / chemistry*
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Molecular Structure
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Oxidation-Reduction
Substances
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Benzimidazoles
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Cyclic N-Oxides
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Metals
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TEMPO