METHOD OF OBTAINING 5(6)-BENZIMIDAZOLE DERIVATIVES OR SALTS THEREOF

METHOD OF OBTAINING 5(6)-BENZIMIDAZOLE DERIVATIVES OR SALTS THEREOF

1. Process for the preparation of 5(6)-benzimidazole derivatives of general formula I see diagramm : EP0080555,P4,F2 wherein R represents hydrogen, halogen, C1-4 alkyl, C1-3 alkoxy or trifluoromethyl, R**1 represents amino or C1-4 alkoxycarbonylamino, and the salts thereof, characterised in that a c...

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Bibliographische Detailangaben
Hauptverfasser: MARIA SOMOR,HU, LIVIA NAD,HU, DEZHE KORBONITSH,HU, PAL KISHSH,HU, GERGELI KHEJA,HU, KAROJ KHORVAT,HU, CHABA GENTSI,HU, IDA SVOBODA,HU, EDE MARVANOSH,HU, VERA KOVACH,HU, ENDRE PALOSHI,HU, YUDIT KUN,HU
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:1. Process for the preparation of 5(6)-benzimidazole derivatives of general formula I see diagramm : EP0080555,P4,F2 wherein R represents hydrogen, halogen, C1-4 alkyl, C1-3 alkoxy or trifluoromethyl, R**1 represents amino or C1-4 alkoxycarbonylamino, and the salts thereof, characterised in that a compound of general formula II see diagramm : EP0080555,P4,F4 wherein R and R**1 are as hereinbefore defined, is reacted with chlorine gas and a rhodanide of general formula III R**3 -SCN wherein R**3 represents an alkali metal or alkaline earth metal atom or the ammonium group.