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Synthesis of pyrazole-3-carboxylates and pyrazole-1,5-dicarboxylates by one-pot cyclization of hydrazone dianions with diethyl oxalate |
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| Authors: | Tung T. Dang Christine Fischer Peter Langer |
| Affiliation: | a Institut für Chemie, Universität Rostock, Albert-Einstein-Strasse 3a, 18059 Rostock, Germany b Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany c Institut für Anorganische und Analytische Chemie, Universität Jena, August-Bebel-Strasse 2, 07740 Jena, Germany |
| Abstract: | The one-pot cyclization of hydrazone dianions with diethyl oxalate allows a convenient synthesis of pyrazole-3-carboxylates and pyrazole-1,5-dicarboxylates. |
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