摘要：29．羧基 (3)CH3CH2CH2CH=CH2+Br2 ®CH3CH2CH2CHBrCH2Br (4) CH3-CH-CH2-COOH CH3-CH2-CH-COOH CH3 CH3 (5)CH3CH2CH2CH2CHO+2Ag(NH3)2OHCH3CH2CH2CH2COONH4+3NH3+2Ag¯+H2O

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