实验操作： A round bottom flask was charged with a stir bar, 3-bromo-2-fluropyridine S5 (1.76 g, 10.0 mmol,1.0 equiv.), cyclohex-1-en-1-ylboronic acid S6 (1.39 g, 11.0 mmol, 1.1 equiv.), PdCl2(dppf)•CH2Cl2 ...