1乙酰乙酸乙酯的a~烷基化、a-酰基化 00 CH:CCHCOC2Hs 0 0 C2HONa CHI Nat CH3C-CH-COC2H5 -C2H;OH 00 CHy CH3C=CHCOC2H5 00 CH3CCH2COC2Hs- 00 CH,COCI CH:CCHCOC2Hs 00 CH.COCCH 00 NaH CH3C-CH-COC2Hs -H2 0°0 COCH3 CH3C-CHCOC2Hs CH,COOC,H U