硝基苯还原关系图 2H NO NHOH Na,Croz+hoso Fe/Hci 2H H/ cat. M/HCI SnCl/ho NO NH2 (M=Fe, Zn, Sn)
Organic Chemistry Organic Chemistry Xiamen Xiamen University University 硝基苯还原关系图 NO NHOH NO 2 NH2 Na2Cr2 O 7 + H 2SO 4 2 H H 2/ Cat., M / HCl , S nCl 2/ HCl ( M = F e, Z n, S n ) 2 H Fe / H C l Fe / HCl H2SO5 Zn / NH4Cl + H2O
双分子还原 Q Reduction in basic media gives binuclear compounds As2O NO N一N aq.NaOH,△ azoxybenzene Zn/naoh al ①D Zn(excess) N-N XNHNH ⑨D Naoh azobenzene hydrazobenzene
Organic Chemistry Organic Chemistry Xiamen Xiamen University University 双分子还原 Reduction in basic media gives binuclear compounds. NO 2 N NHNH N O N N a q. NaOH, Z n / NaOH NaOH Zn (excess) As 2 O 3 H2NNH2, Ru/C alc. KOH azo x yb enzene hyd razo b enzene azo b enzene
Nucleophilic Aromatic Substitution 芳香亲核取代反应 Nu t Nud +L Cl OH 10% NaOH H+ ressure 360
Organic Chemistry Organic Chemistry Xiamen Xiamen University University Nucleophilic Aromatic Substitution 芳香亲核取代反应 L Nu + Nu + L Cl 1 0% NaOH pr e s s ur, 360 H + OH
OH 10% NaOH pressur, 135-160 NO NO2 NO OH Naco2 Hoo NO 100 nO, NO Cl ①D OH NO ON NO H2O ⑨D room tempt NO2 NO2
Organic Chemistry Organic Chemistry Xiamen Xiamen University University p ressur, 135~160 Cl H + OH NO 2 10% NaOH NO 2 100 Cl H + OH NO 2 Na 2CO 3, H 2 O NO 2 NO 2 NO 2 Cl NO 2 O 2 N NO 2 H 2 O ro o m tem pt. H + OH NO 2 O 2 N NO 2
Nucleophilic substitution can occur when strong electron-withdrawing groups are ortho or para to the halogen atom 除硝基外下列基团也能起活化邻对位亲核取代的作用 2 N NONO2一CF3-CRCN CO,H SO cl-Br -C6H5
Organic Chemistry Organic Chemistry Xiamen Xiamen University University Nucleophilic substitution can occur when strong electron-withdrawing groups are ortho or para to the halogen atom 除硝基外 下列基团也能起活化邻对位亲核取代的作用 N 2 N NO NO 2 CO 2 H CF 3 CR CN O SO 3 Cl Br I CO 2 C 6 H 5