1972
DOI: 10.1002/chin.197248320
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ChemInform Abstract: SYNTH. VON DERIVATEN DES 2‐HYDRAZONO‐THIAZOLIDONS‐(4) AUS THIOSEMICARBAZID‐DERIVATEN

Abstract: Die Reaktion des Anhydrids (I) (aus Monochloressigsäure und Keten) mit Thiosemicarbazid (II) (als Hydrochlorid) liefert exotherm das Hydrazonothiazolidinon (III).

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“…Mixed anhydride (67), prepared by passing ketene into chloroacetic acid, reacts with substituted and unsubstituted thioureas in chloroform at 60 °C to give various 2-imino-4-thiazolidinoneslu'112 (68). Various 3-substituted-2-thiono-4-thiazolidinones (69) can be conveniently prepared by the reaction of substituted isothiocyanates with a-mercaptoacetic acid or its ester followed by acid cyclization of the resulting (thiocarbamoyl)mercaptoacetic acids and acetates.113 amount of alcoholate to give 4-thiazolidinones147,148 (74).…”
Section: B 4-thiazolidinonesmentioning
confidence: 99%
“…Mixed anhydride (67), prepared by passing ketene into chloroacetic acid, reacts with substituted and unsubstituted thioureas in chloroform at 60 °C to give various 2-imino-4-thiazolidinoneslu'112 (68). Various 3-substituted-2-thiono-4-thiazolidinones (69) can be conveniently prepared by the reaction of substituted isothiocyanates with a-mercaptoacetic acid or its ester followed by acid cyclization of the resulting (thiocarbamoyl)mercaptoacetic acids and acetates.113 amount of alcoholate to give 4-thiazolidinones147,148 (74).…”
Section: B 4-thiazolidinonesmentioning
confidence: 99%