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An improved synthesis of pyrido[2,3-d]pyrimidines |
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| Authors: | Tsuneo Itoh Ikuko Fujii Yasuo Tomii Ichiro Ishikawa Hamo Ogura Yoshihisa Mizuno Norio Kawahara |
| Abstract: | An improved and efficient synthesis of 1,3-dialkylpyrido2,3-d]pyrimidine-2,4-(1H,3H)-diones from 6-methylaminouracils and methyl propiolate or diethyl ethoxymethylenemalonate is described. |
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