12-5 完成下列反应:-|||-CH3-|||-(1) -NO2 +HCOOEt EtONa-|||-NO2-|||-(2) +NaOCH3 CH3OH-|||-Cl-|||-Cl-|||-(3) -CH2CH 2NH2 CH3COCl () ②H2O-|||-NH2-|||-(4) -NO2 -(O)_(2)/(H)_(2)S(O)_(4)() - CuCl/HCl () CH3OH-|||-NO2-|||-(5) -CN +2C(H)_(3)I → () dfrac ({A)_(2)(O)_(2)}({H)_(2)O,Delta }-|||-N-|||-H-|||-NO2-|||-HO-|||-(6) Fe/HCl () NaNO2,HCl () -N(H)_(2)-|||-=8sim 10-|||-(7) (H)_(3)-N=C-O+C(H)_(3)OH-|||-(8) bigcirc (square )-overset (overset {||)(|)}(C)-N(H)_(2)dfrac ({P)_(2)(O)_(5)}(Delta ) () H2,NT