p-Toluenesulfonic acid → HCID 54435613, compound

Participants

Reaction Steps

430 parts of n-valeraldehyde and 5 parts of p-toluenesulfonic acid are added in succession to a solution of 750 parts of methyl carbamate in 2,000 parts by volume of diethyl ether at 25° C. After a reaction time of one hour, in which the temperature rises to 40° C., filtration with suction and subsequent fractional distillation of the solid in the presence of 15 parts of potassium carbonate and 2 parts of hydroquinone give 559.1 parts of methyl N-(1-pentenyl)-carbamate (78.2% yield, based on n-valeraldehyde employed) as a cis/trans isomer mixture of boiling point 97°-102° C./16 mbar, and 352.5 parts of methyl carbamate, which can be re-used.

Provenance & Evidence