Phenol → Phenyl n-butylcarbamate

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Reaction Steps

5 g. N-butyl-carbamic acid benzoic acid sulfimide are suspended in the mixture of 1.67 g. phenol and 50 ml water, then while stirring (5 hours) a solution of 0.71 g. sodium hydroxyd in 50 ml water is added. After stirring another 3 hours the mixture is extracted with 2×30 ml ether. The ethereal extracts dried with sodium sulfate, then the solvent evaporated in vacuum at a temperature not above 30° C. 2.15 g. phenyl N-butyl-carbamate are obtained, which can be distilled at 146°-148° C. at 2 mmHg.

Provenance & Evidence