Process for producing arylsulfonylureide compounds

The arylsulfonylureide compound which is of value as a color developer is provided in high yield and high purity by a simple procedure. The technology of the invention for producing an arylsulfonylureide compound of general formula (1) (Ar -SO2NHCONH)n-Ar wherein Ar represents an aromatic residue; A...

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Main Authors SASAKI, NOBUAKI, KAWABATA, TOSHIHIKO, MATSUMOTO, MANSUKE, SAWANO, BUNJI
Format Patent
LanguageEnglish
French
German
Published 25.11.1998
Edition6
Subjects
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Abstract The arylsulfonylureide compound which is of value as a color developer is provided in high yield and high purity by a simple procedure. The technology of the invention for producing an arylsulfonylureide compound of general formula (1) (Ar -SO2NHCONH)n-Ar wherein Ar represents an aromatic residue; Ar represents a bivalent or trivalent aromatic residue; n represents an integer of 2 or 3 comprises reacting an arylsulfonamide alkali metal salt of general formula (2) Ar -SO2NH.B wherein B represents an alkali metal with an aromatic isocyanate compound of general formula (3) Ar -(NCO)n in at least one solvent selected from the class consisting of acetonitrile, acetone, methyl ethyl ketone, diethyl ketone, methyl isobutyl ketone, tetrahydrofuran, ethyl acetate, and butyl acetate and containing 1 to 10 weight % of water in a state of suspension being maintained throughout the reaction and eliminating the alkali metal from the resulting arylsulfonylureide compound alkali metal salt in the same solvent.
AbstractList The arylsulfonylureide compound which is of value as a color developer is provided in high yield and high purity by a simple procedure. The technology of the invention for producing an arylsulfonylureide compound of general formula (1) (Ar -SO2NHCONH)n-Ar wherein Ar represents an aromatic residue; Ar represents a bivalent or trivalent aromatic residue; n represents an integer of 2 or 3 comprises reacting an arylsulfonamide alkali metal salt of general formula (2) Ar -SO2NH.B wherein B represents an alkali metal with an aromatic isocyanate compound of general formula (3) Ar -(NCO)n in at least one solvent selected from the class consisting of acetonitrile, acetone, methyl ethyl ketone, diethyl ketone, methyl isobutyl ketone, tetrahydrofuran, ethyl acetate, and butyl acetate and containing 1 to 10 weight % of water in a state of suspension being maintained throughout the reaction and eliminating the alkali metal from the resulting arylsulfonylureide compound alkali metal salt in the same solvent.
Author KAWABATA, TOSHIHIKO
MATSUMOTO, MANSUKE
SASAKI, NOBUAKI
SAWANO, BUNJI
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DocumentTitleAlternate Procédé de préparation de composés d'arylsulfonylurée
Verfahren zur Herstellung von Arylsulfonylharnstoffverbindungen
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Snippet The arylsulfonylureide compound which is of value as a color developer is provided in high yield and high purity by a simple procedure. The technology of the...
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SubjectTerms ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
Title Process for producing arylsulfonylureide compounds
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