答案：
OCOOHCOOHCOOC2H5OHCHOONa25COOC2H5OHCOOC2H5C2H5OOHH+OOC2H5COOC2H5C2H5OONaCOOC2H5OC2H5COOHC2H5Br(1)OH-(2)H3O+O
C2H5
答案：
2CH2(COOC2H5)2C2H5ONa
2NaCH2(COOC2H5)2CHC(COOC2H5)2CH2C(COOC2H5)2BrC2H5BrCH2CH(COOC2H5)22C2H5ONaBrC2H5BrCH2CH(COOC2H5)2OH5C2OCCOOC2H5COOH(1)OH-(2)H3O+,H5C2OCOCOOC2H5COOH
答案：
CH3COOHCH2OHKMnO4LiAlH4CH3CH2BrCOOHCH2CNCH2OHCH2COOC2H5PBr3NaCNC2H5OHHClCH2BrCH2CNCH2COOC2H5C2H5ONaO(1)OH-(2)H3O+OCOOC2H5
答案：
HOOHClSO3H
HOOHHO3SNO2HOHNO3OHH3O+SO3HNO2HOOHH2SO4
HO3SSO3H
答案：
CH3O
CH3+OAlCl3多聚磷酸COOHOCH3CH3CH3NaBH4OOHH3O+OHO
答案：
C2H5ONaONaOOCH3CH2CCHCH2OOC2H3OOCHCH3O
答案：
O
O+OAlCl3Zn(Hg)HClCOOHCOOHO多聚磷酸MgBrOOMgBrH3O+Pd/C
