Carbamic acid, ethyl ester → Ethyl N-tert-butylcarbamate

Participants

Reaction Conditions

Reaction Steps

A stirred mixture of 89 g of ethyl carbamate, 10 g of ®LEWASORB AC-10 and 70 g of isobutene was heated to 70° C. in a stirred autoclave, and stirring was continued at this temperature for 4 hours. After the reaction was complete, the catalyst was separated off and the reaction mixture was analyzed by gas chromatography. It still contained 4.5 percent by weight of diisobutene, in addition to the end product. Distillation of the crude product gave 134 g (92% of theory) of ethyl N-tert.-butylcarbamate of boiling point 70°-71° C./20 mbar.

Provenance & Evidence