Project supported by the National Natural Science Foundation of China (Nos. 20372024 and 20172018); the Excellent Scientist Foundation of AnhuiProvince (No. 2001040); the Natural Science Foundation of the Education Department of Anhui Province (No. 2
A novel debromination of vic-dibromides to alkenes with InCl3(cat.)/Sm system in aqueous media has been de- veloped. The reaction gives the E-isomers with excellent yields.