Bromine → Hydrogen Bromide

Participants

Reaction Conditions

Reaction Steps

Under a slight stream of nitrogen, 18.4 g of (2-chloro-allyl)-dithiocarbamic acid phenyl ester are placed in 100 ml of bromochloromethane and cooled to 0-1° C. Before and during the addition of bromine, the apparatus is flushed thoroughly with nitrogen. 13.8 g of bromine are added in the course of 120 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 residue, and the product is filtered off with suction at 20-25° C., washed with 30 ml of hexane and dried in vacuo at room temperature. The title product is obtained in the form of the hydrobromide (compound 2.2).

Provenance & Evidence