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4-(1-Methyl-2-sulfamoylvinyl)pyrazoles by Ring Transformation of 1,1-dioxo-2H-1,2-thiazine-4-carbaldehydes with hydrazines

✍ Scribed by Prof. Dr. Egon Fanghänel; H. Bartossek; Th. Lochter; U. Baumeister; H. Hartung


Book ID
105354827
Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
608 KB
Volume
339
Category
Article
ISSN
1615-4150

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Amidine-Induced Ring Transformation of a
✍ Fanghänel, Egon ;Bartossek, Hagen ;Baumeister, Ute ;Hartung, Helmut 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 440 KB

## Abstract As a masked 1,3‐dicarbonyl compound, the 1,1‐dioxo‐__2H__‐1,2‐thiazine‐4‐carbaldehyde 1 undergoes ring transformation with amidines to produce 2‐substituted 4‐methyl‐5‐[1‐methyl‐2‐methylthio‐2‐(__N__‐phenylsulfamoyl)vinyl]pyrimidines 3a–f. For 3b, an X‐ray structure analysis is reported