JPH0247988B

JPH0247988B

To prepare a 1-nitrobenzene-2-alkyloxycarbonyl-5-carboxylic acid, a dialkyl benzene-1,4-dicarboxylate is first nitrated in a customary manner and the dialkyl 1-nitrobenzene-2,5-dicarboxylate compound obtained is subjected to a partial acidic ester hydrolysis without isolating the nitro compound prep...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: UORUFUGANGU TORONITSUHI, UERUNERU UIKIPIIRU
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:To prepare a 1-nitrobenzene-2-alkyloxycarbonyl-5-carboxylic acid, a dialkyl benzene-1,4-dicarboxylate is first nitrated in a customary manner and the dialkyl 1-nitrobenzene-2,5-dicarboxylate compound obtained is subjected to a partial acidic ester hydrolysis without isolating the nitro compound prepared as an intermediate. The acidic ester hydrolysis is carried out in the presence of a catalytic amount of an organic solvent which is completely or partially miscible with water and has a boiling point of above 90 DEG C. and/or of an emulsifier; it is preferably carried out at a temperature between 65 DEG and 110 DEG C.