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Interaction of 2-aryl-6-hydroxy-5,6-tetra-methyl-enepiperidine-3,3,4,4-tetracarbonitriles and 2-aryl-5,6-tetramethylene-3,3,4-tricyano-2,3,4,5-tetrahydropyridine-4-carboxamides with ammonia

✍ Scribed by Ya. S. Kayukov; P. M. Lukin; O. E. Nasakin; Ya. G. Urman; V. N. Khrustalev; V. N. Nesterov; M. Yu. Antipin; V. V. Sheverdov


Publisher
Springer US
Year
1997
Tongue
English
Weight
422 KB
Volume
33
Category
Article
ISSN
0009-3122

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✍ Sergiy M. Kovalenko; Sergiy V. Vlasov; Valentin P. Chernykh 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 150 KB

## Abstract Possible approaches to synthesis of 5‐methyl‐4‐oxo‐2‐(coumarin‐3‐yl)‐__N__‐aryl‐3,4‐dihydrothieno[2,3‐__d__]pyrimidine‐6‐carboxamides **4** have been discussed. It is shown that the preferable approach is cyclization of 2‐iminocoumarin‐3‐carboxamides **1**, utilizing 5‐amino‐3‐methyl‐__