(2)氯甲基化 CH2CI e HCHO HCI 冰醋酸，P04→ 56% +H20 (3)由重氮盐制备 NH2 N2BF4 (1)NaNO,HCI (2)HBF4 (76%-84%) (89%) 回(2) 氯甲基化 CH2 Cl + HCHO + HCl 冰醋酸，H3 P O4 56% + H2 O (3) 由重氮盐制备 CH3 NH2 CH3 F CH3 N2 + BF4 - (1) NaNO2 ,HCl (2)HBF4  (76%-84%) (89%)