Structural reassignment of an ‘unusual’ derivative of 3-methyl-5-phenylpyrazol-5-one (Edaravone) |
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| Authors: | Jennifer Burgess |
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| Institution: | Department of Chemistry, University of Canterbury, Christchurch, New Zealand |
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| Abstract: | The structure of the major product from the reaction of 4-bromo-3-methyl-1-phenylpyrazol-5-one (1) with ethyl cyanoacetate is shown, by means of an X-ray crystal structure determination, to be the spirocyclic compound 4, rather than the previously proposed isomer 3. |
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| Keywords: | Pyrazolone Spiro compound Crystal structure |
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