Abstract
Benzylcyanide and 4-nitrobenzylcyanide condensed with triethyl orthoformate and piperidine or morpholine to yield 2-aryl-2-piperidinyl or 2-morpholinylacrylonitriles. These coupled with aromatic diazonium salts to yield the 2-arylhydrazno-2-arylethane nitriles in good yields. The latter were converted into 4-aminopyrazoles in good yields using the Thorpe-Ziegler cyclization.
MeSH terms
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Acrylonitrile / analogs & derivatives
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Acrylonitrile / chemical synthesis
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Alkylation
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Cyclization
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Diazonium Compounds / chemistry
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Dimethylformamide / chemistry
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Formates / chemistry
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Heterocyclic Compounds, 2-Ring / chemistry*
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Microwaves
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Nitriles / chemistry*
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Piperidines / chemistry
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Pyrazoles / chemical synthesis*
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Solvents / chemistry
Substances
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Diazonium Compounds
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Formates
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Heterocyclic Compounds, 2-Ring
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Nitriles
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Piperidines
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Pyrazoles
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Solvents
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enaminonitrile
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piperidine
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Dimethylformamide
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Acrylonitrile