A New Facile Synthesis of 5-Alkyl-2-Aryl-3H-Pyrazol-3-Ones |
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| Authors: | Bang-Chi Chen Xian Huang Sheng-Ming Ma |
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| Affiliation: | Department of Chemistry , Hangzhou University , Hangzhou, People's Republic of China |
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| Abstract: | The title compounds widely used in construction of pigments and antimaterials are most usually prepared by condensation of arylhydrazines and β-keto esters 1,2. Although a number of 5-methyl and aryl derivatives have been obtained, other 5-alkyl-3-pyrazolones are rarely mentioned in literature 3 because of the lack of a convenient method to prepare the approperate β-keto esters used in condensation. |
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