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Recyclization of ethyl 1-alkyl-5-benzoyl-6-methylsulfanyl-2-oxo-1,2-dihydropyridine-3-carboxylates into BicyclicN-alkyl-5-benzoyl-2-oxo-1,2-dihydropyridine-3-carboxamide derivatives by the action of nitrogen-containing 1,4- and 1,5-binucleophiles

✍ Scribed by V. N. Britsun; A. N. Esipenko; A. V. Gutov; A. N. Chernega; M. O. Lozinskii


Book ID
111465230
Publisher
SP MAIK Nauka/Interperiodica
Year
2009
Tongue
English
Weight
533 KB
Volume
45
Category
Article
ISSN
1070-4280

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## Abstract 4‐Ethoxycarbonyl‐5‐phenyl‐2,3‐dihydrofuran‐2,3‐dione **1** reacts with aldehydes __via__ the acylketene intermediate **2** giving the 1,3‐dioxin‐4‐ones **3a‐e** and the 1,4‐bis(5‐ethoxycarbonyl‐4‐oxo‐6‐phenyl‐4__H__‐1,3‐dioxin‐2‐yl)benzene **4**, and a one step reaction between dibenzoy