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ChemInform Abstract: Synthesis of N-Substituted 2,4-Diaminothiazoles and Their Salts.

โœ Scribed by R. FLAIG; H. HARTMANN

Publisher
John Wiley and Sons
Year
2010
Weight
27 KB
Volume
28
Category
Article
ISSN
0931-7597

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Synthesis and Cyclization of 1-(N-Nitroamidino)thioureas to 2,4-Diaminothiazoles. -Reaction of nitroguanidine (I) with isothiocyanates in the presence of powdered KOH provides 1-(N-nitroamidino)thioureas (III) which react with phenacyl bromides to give unexpectedly 2,4-diaminothiazoles (V) in high