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Synthesis of Nitro-Substituted 4-Oxo-4H-pyrimido[2,1-b]benzothiazole-3-carboxylic Acids and Their Spectral Characteristics

✍ Scribed by Bartovič, Alexander; Ilavský, Dušan; Šimo, Ondrej; Zalibera, Lubomír; Belicová, Anna; Seman, Milan


Book ID
120641365
Publisher
UOCHB
Year
1995
Tongue
English
Weight
97 KB
Volume
60
Category
Article
ISSN
0010-0765

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## Abstract 2‐Amino‐6‐methoxybenzothiazole **1** on reaction with bis(methylthio)methylene malononitrile **2** in the presence of dimethyl formamide and catalytic amount of anhydrous potassium carbonate afforded 3‐cyano‐4‐imino‐8‐methoxy‐4__H__‐pyrimido[2,1‐__b__][1,3]benzothiazole **3**. Under sim