Process for the production of 4,5-disubstituted thiazoles

Process for the production of 4,5-disubstituted thiazoles

4,5-Disubstituted thiazoles are manufactured by reacting 4-amino-5-cyano-thiazoles with hydrogen sulfide in the presence of basic compounds, followed by dehydrogenating cyclization. The new 3-amino-thiazolo-(4,5-c)-isothiazoles I, 4-amino-5-thiocarbamidothiazoles III and 4,5-disubstituted thiazoles...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SEYBOLD, GUENTHER, EILINGSFELD, HEINZ
Format: Patent
Sprache:eng
Schlagworte:
ADHESIVES
CHEMISTRY
DYES
HETEROCYCLIC COMPOUNDS
LAKES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC CHEMISTRY
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
POLISHES
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Beschreibung
Zusammenfassung:4,5-Disubstituted thiazoles are manufactured by reacting 4-amino-5-cyano-thiazoles with hydrogen sulfide in the presence of basic compounds, followed by dehydrogenating cyclization. The new 3-amino-thiazolo-(4,5-c)-isothiazoles I, 4-amino-5-thiocarbamidothiazoles III and 4,5-disubstituted thiazoles IV obtainable by the process of the invention are valuable intermediates for the manufacture of azo dyes and of crop protection agents.