(1,2-Dibromoethyl)benzene → HCID 20395139, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred suspension of 18.6 g of the disodium salt of 1,2-dicyano-1,2-dimercaptoethylene under nitrogen is added 26.4 g of 1,2-dibromo-1-phenylethane. After stirring at 40° C. for one-half hour, the mixture is heated under reflux for 1.5 hours, cooled, filtered, and the solvent removed under reduced pressure. The residue is crystallized by filtration with carbon tetrachloride to give the product, 2,3-dicyano-5,6-dihydro-5-phenyl-p-dithiin, as golden brown crystals, melting point 121.5° C. to 124° C. A purified sample had melting point 125° C. to 126.5° C.

Provenance & Evidence