Abstract
Aqueous syntheses of methylimidazo[1,2-a]pyridines without any deliberate addition of catalyst are reported. Imidazo[1,2-a]pyrazine and imidazo[2,1-a]isoquinoline were also obtained in good yields under similar conditions. With acetonitrile as solvent, Ag-catalyzed intramolecular aminooxygenation produced imidazo[1,2-a]pyridine-3-carbaldehydes in moderate to good yields.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Catalysis
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Imidazoles / chemical synthesis*
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Imidazoles / chemistry
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Isoquinolines / chemical synthesis*
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Isoquinolines / chemistry
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Pyrazines / chemical synthesis*
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Pyrazines / chemistry
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Pyridines / chemical synthesis*
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Pyridines / chemistry
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Silver / chemistry*
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Structure-Activity Relationship
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Water
Substances
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Imidazoles
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Isoquinolines
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Pyrazines
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Pyridines
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imidazo(1,2-a)pyrazine
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imidazo(2,1-a)isoquinoline
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Water
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Silver