Abstract
IN connexion with an investigation on the elaboration of the Coffey1 synthesis of 1-ketotetra-hydrocarbazoles, a study of the action of acidic reagents on a number of 1 : 2-cyclohexadionemonophenylhydrazones of the type (I) has recently been undertaken. Although it has not so far proved possible to obtain 1-ketotetrahydrocarbazolenines (II) by this means, an interesting synthesis of cinnoline derivatives has come to light.
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References
Coffey, S., Rec. trav. chim., 42, 528 (1923).
Simpson, J. C. E., J. Chem. Soc., 447 (1943).
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MOORE, B. A New Synthesis of Cinnoline Derivatives. Nature 163, 918–919 (1949). https://doi.org/10.1038/163918c0
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DOI: https://doi.org/10.1038/163918c0
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