JPS6045631B

JPS6045631B

A process for the preparation of a phenylglyocylic acid ester of the formula (VII) wherein R1 represents alkyl, X represents halogen, alkyl, halogenoalkyl, alkoxy or nitro, and n represents 0, 1, 2, or 3 by contacting a benzoyl cyanide of the formula (VIII) wherein X and n have the meanings stated a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: UIRUFURIITO DORABERU, UINFURIITO RUNKENHAIMERU, ANTOREASU UIITEITSUHI, HERUMUUTO TEIMURERU
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A process for the preparation of a phenylglyocylic acid ester of the formula (VII) wherein R1 represents alkyl, X represents halogen, alkyl, halogenoalkyl, alkoxy or nitro, and n represents 0, 1, 2, or 3 by contacting a benzoyl cyanide of the formula (VIII) wherein X and n have the meanings stated above, in a sulphuric acid/water system in the presence of chloride ions at a temperature between 0 DEG and 70 DEG C. to form phenylglyoxylic acid amide and reacting the phenylglyoxylic acid amide without isolation with an alcohol of the formula R1-OH, wherein R1 has the meaning stated above, optionally in the presence of a diluent, at a temperature between 40 DEG and 100 DEG C.