1: With palladium diacetate; 2,2'-bis-(diphenylphosphino)-1,1'- binaphthyl in ethylene glycol dimethyl ether T=20°C; 0.166667 h; Inert atmosphere; 2: With tetrabutylammomium bromide; sodium nitrite in ethylene glycol dimethyl ether 5 h; Reflux;