硝基化合物的还原 CH3 Fe FeSO4 NaOH CH HOCH2-C-NOL H2O-HOSOA HOCHO-C-NH CH CH H R一NO R一NH M/HT Zn/hcl. fe/hcl. sn/hcl H2/ NI NayS, NaSH, (NH4)HS, (NH4)2S硝基化合物的还原 HOCH 2 C NO 2 CH 3 CH 3 Fe, FeSO 4 H 2O￾H 2SO 4 NaOH HOCH 2 C NH 2 CH 3 CH 3 R NO 2 R NH 2 M / H+ : Z n / H Cl , F e / H C l , S n / H Cl , H 2 / Ni Na 2 S , NaSH, (NH 4 ) HS , ( N H 4 ) 2 S [H ]