trifluoromethylsulfonic anhydride in dichloromethane T=20°C; 6 h; Inert atmosphere;

1: 2-Bromo-4-fluoro toluene With magnesium; lithium chloride in tetrahydrofuran T=20°C; Inert atmosphere; 2: N-cyano-N-phenyl-p-methylbenzenesulfonamide in tetrahydrofuran T=0 - 20°C; Inert atmosphere;

in butanone

N-bromosuccinmide; 2,2'-azo-bisisobutyronitrile in tetrachloromethane T=20°C; 8.16667 h;