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The Synthesis and Transformations of Methyl 2-[2,2-Bis(ethoxycarbonyl)-ethenyl]amino-3-dimethylaminobut-2-enoate. The Synthesis of 3-Amino-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-ones

✍ Scribed by Stanovnik, Branko; Selic, Lovro; Golic Grdadolnik, Simona

Book ID
125332590
Publisher
Japan Institute of Heterocyclic Chemistry
Year
1997
Tongue
English
Weight
207 KB
Volume
45
Category
Article
ISSN
0385-5414

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## Abstract Transformations of intermediates 4, prepared from methyl 2‐(2,2‐disubstituted‐ethenyl)amino‐3‐dimethylaminopropenoates 2 and sterically hindered heteroarylamines 3, into methyl 1‐heteroaryl‐1__H__‐imidazole‐4‐carboxylates 7 are described.

Reactions of methyl (E,Z)-2-(2-benzoyl-2
Reactions of methyl (E,Z)-2-(2-benzoyl-2-ethoxycarbonyl-1-ethenyl)-amino-3-dimethylaminopropenoate with heteroarylhydrazines. 2-(2-Benzoyl-2-ethoxycarbonyl-1-ethenyl)amino-3-heteroarylhydra-zonopropanoates and 1-heteroaryl-4-ethoxycarbonyl-3-phenylpyrazoles
✍ Sonja Strah; Branko Stanovnik 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 234 KB

## Abstract In the reaction of methyl (__E,Z__)‐2‐(2‐benzoyl‐2‐ethoxycarbonyl‐1‐ethenyl)amino‐3‐dimethylaminopro‐penoate (1) with heteroarylhydrazines 2 in ethanol in the presence of catalytic amounts of hydrochloric acid two types of products were formed: methyl 2‐(2‐benzoyl‐2‐ethoxycarbonyl‐1‐eth