5.用化学方法区别下列各组化合物: (1)正庚烷CH(CH)4CH2C 6.写出下列反应的主要产物 Eto--EtOH (3) DCI NaCN PCI NaS NaOH-H,O Br CN CH3 COCH H2SO4 (10) CN H3c Br Etoh (12) CH3 NaCn CH3CH一C-CH3 HBr(c) DMF (13) (14 CuLi (R)-CH3 CHCH2OH NaCN DMSO5． 用化学方法区别下列各组化合物： (1) 正庚烷 CH3(CH2)4CH2Cl (2) Cl Cl Cl (3) Cl Cl Cl 6. 写出下列反应的主要产物: (1) Cl2 hv Mg Et2O D2O (2) Cl CH(CH3 )2 EtO - -EtOH (3) D (4) Cl OH OH PCl3 NaCN (5) (6) OH OH PCl3 Na2S HO Cl NaOH-H2O (7) (8) Br CN NaI CH3COCH3 OH OH HCl(1mol) H2SO4 (9) (10) CN - DMF H3C Br EtOH H Br H CH3 CH3 H (11) (12) CH3 H Br H NaCN DMF CH3CH C OH CH3 CH3 CH3 HBr (c) (13) (14) (R)-CH3CHCH2OH Cl NaCN DMSO Cl2 hv CuLi 2