Bromine → Hydrogen Bromide

Participants

Reaction Conditions

Reaction Steps

Under a slight stream of nitrogen, 19.0 g of (2-chloro-allyl)-dithiocarbamic acid cyclohexyl ester are placed in 100 ml of acetonitrile and cooled to 0-1° C. Before and during the addition of bromine, the apparatus is flushed thoroughly with nitrogen. Then 14.0 g of bromine are added in the course of 70 minutes in such a manner that the temperature can be maintained at 0-10° C. When the addition is complete, stirring is carried out for about 20 minutes. The reaction mixture is concentrated in vacuo at 20-25° C. 50 ml of hexane are added to the crude product, and the product is filtered off with suction at 20-25° C., washed twice with 45 ml of hexane and dried in vacuo at room temperature. The title product is obtained in the form of the hydrobromide (compound 2.3).

Provenance & Evidence