1: With potassium acetate; 4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl-4',4',5',5'-tetramethyl-1,3,2-dioxaborolane; bis-triphenylphosphine-palladium(II) chloride in ethylene glycol dimethyl ether T=70°C; P=760.051 Torr; 26 h; Inert atmosphere; 2: With water in ethylene glycol dimethyl ether; ethyl acetate Cooling;

potassium acetate in ethylene glycol dimethyl ether