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- W2953245816 abstract "A new and facile access to cinnolines, dihydrocinnolines, and 1-aminoindolines was established by use of diazo functionalities. The hydrazines and hydrazones as cyclization precursors derived from 3-haloaryl-3-hydroxy-2-diazopropanoates, which are prepared by one-pot procedure utilizing phase-transfer catalysis, are successfully converted to the corresponding nitrogen heterocycle by Cu-catalyzed N-arylation. Furthermore, analysis of UV spectra proved that 4-oxo-3-carboxylates predominantly exist not as 4-hydroxycinnoline (enol form) but as cinnolone (keto form)." @default.
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- W2953245816 date "2008-07-09" @default.
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- W2953245816 title "Novel Synthesis of Cinnolines and 1-Aminoindolines via Cu-Catalyzed Intramolecular N<i>-</i>Arylation of Hydrazines and Hydrazones Prepared from 3-Haloaryl-3-hydroxy-2-diazopropanoates" @default.
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- W2953245816 doi "https://doi.org/10.1021/jo8010864" @default.
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