1,2-Dibromoethane → HCID 10093123, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 3.1 g of 3, from Example 3, in 46 ml ammonia, 10 ml THF, 10 milliliters toluene, was added 449 mg of metallic lithium in small pieces. After stirring the blue solution for 2 hours at -78° C., a solution of 1,2-dibromoethane in 2 ml THF was added. After stirring the solution at -78° C. for 10 minutes, 2.1 g of ammonium chloride was added and the mixture stirred for 10 minutes. The excess ammonia was removed by evaporation under a nitrogen stream. The reaction mixture was diluted with brine, extracted with ethyl acetate. The organic layer was washed with brine, dried and concentrated to yield crude brown viscous liquid 4 which was used as such in Example 5. Rf=0.70 (20% EtOAc/hexane). Mass Spec. 412 (EI); calculated MW 412.70.

Provenance & Evidence