N-bromosuccinmide; 2,2'-azo-bisisobutyronitrile in acetonitrile 8 h; Reflux;

1: 4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl-4',4',5',5'-tetramethyl-1,3,2-dioxaborolane; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; potassium carbonate / dimethyl sulfoxide; dichloromethane / 3 h / 85 °C / |Schlenk technique; |Inert atmosphere 2: 2,2'-azo-bisisobutyronitrile; N-bromosuccinmide / acetonitrile / 8 h / |Reflux View Scheme