Preparation of N-substituted carbamates

Preparation of N-substituted carbamates

A method of preparing an N-substituted carbamate comprising reacting by heating in sulfolane at a temperature ranging from about 65 DEG C. to about 100 DEG C. (1) an alkali metal cyanate, (2) at least one sulfolane-soluble organic halide of the formula RX wherein X is halogen and R represents a radi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CHUNG, RACK H
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A method of preparing an N-substituted carbamate comprising reacting by heating in sulfolane at a temperature ranging from about 65 DEG C. to about 100 DEG C. (1) an alkali metal cyanate, (2) at least one sulfolane-soluble organic halide of the formula RX wherein X is halogen and R represents a radical selected from the group consisting of alkyl, alkenyl, aralkyl and aralkenyl, and (3) at least one sulfolane-soluble non-aromatic monohydric or polyhydric alcohol, and isolating the N-substituted carbamate thereby produced from the resulting reaction mass.