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The synthesis of some dialkyl 4-(3-substituted amino)phenyl-1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylates

✍ Scribed by Igor Simonič; Branko Stanovnik


Publisher
Journal of Heterocyclic Chemistry
Year
1997
Tongue
English
Weight
389 KB
Volume
34
Category
Article
ISSN
0022-152X

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Synthesis of Dialkyl 1,4-Dihydro-2,6-dim
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## Abstract The Hantzsch condensation of the heteroarylcarboxaldehydes 3a‐c with alkyl acetoacetates 4a‐c and alkyl 3‐aminocrotonates 5a‐b afforded the respective dialkyl 1,4‐dihydro‐2,6‐dimethyl‐4‐(heteroaryl)‐pyridine‐3,5‐dicarboxylates 6a‐f possessing a C‐4 4‐quinolinyl, 8‐quinolinyl or 1‐oxido‐

Synthesis of dialkyl 1,4-dihydro-2,6-dim
✍ Afshin Fassihi; Carlos Velazquez; Edward E. Knaus 📂 Article 📅 2004 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 148 KB

## Abstract The Hantzsch condensation of 5‐formyluracil (**1**) with methyl, isopropyl or isobutyl acetoacetate **(2a‐c)** in the presence of ammonium hydroxide afforded the respective dialkyl 1,4‐dihydro‐2,6‐dimethyl‐4‐(2,4‐dloxo‐1,2,3,4,‐tetrahydropyrimidin‐5‐yl)pyridine‐3,5‐dicarboxylate **(3a‐c