sodium azide in water

sodium azide in water 20 h;

in dichloromethane 3 h; Ambient temperature; Title compound not separated from byproducts;

in acetonitrile T=5°C; 1 h; Irradiationphotolysis in the presence of aceton or dimethyl fumarate; photolysis in the presence of NaN3, dimethyl fumarate and tetrabutylammonium bromide or chloride; photolysis of other vinyl bromides under the mentioned conditions; Product distribution;

in toluene

in acetonitrile

in acetone 8 h; Irradiation;

in acetone T=5°C; 1 h; Irradiation;