CH5COOC2H5 H-CH2COCH5 NaOC2Hs ②H CHCOCH2COCH5 NaOC2H5 OHC HCOOCH5 CH5OH CH3COCH2COC6Hs 想 和 想 CH5OH KMnO4 CH3COOH CHOH CH3COOC2H5 H+ CHCOOH SOCI CH:COCI CH3COCI CH3COOC2H5 COCH COCH3 A1C5,△ NaOC2H5 C6H5COOC2H5 + H CH2COC6H5 NaOC2 H5 ② H + ① C6H5 COCH2 COC6H5 O HCOOC2H5 + NaOC2 H5 O OHC H+ C2H5OH CH3 COOC2H5 CH3 COOH CH3COCl SOCl 2 NaOC2 H5 CH3COOC2H5 COCH2COCH3 CH3COCl AlCl3 , COCH3 C2H5OH CH3 COOH KMnO4 和 C2H5OH CH3 COCH2 COC6H5