一、卤代酸 Dazen反应: 0 RH) NaOC2H5_ Ph-C-C2Hs CICH-COOC2H5 or NaNH2 R(H) C2Hs R(H) HCI C-C 6264% OHCI Ph O COOC2Hs H20/0H C2Hs R(H) C2H5 R(H) -C02 CHC Ph O COOH △ Ph 0 Organic Chem Organic Chem 一、卤代酸 Dazen 反应: C O Ph C2 H5 + ClCH COOC2 H5 R (H) NaOC2 H5 or NaNH2 C C R Cl COOC2 H5 C2 H5 Ph OH (H) - HCl 62~64% C O C C2 H5 R(H) Ph COOC2 H5 C O C C2 H5 R(H) Ph COOH H2 O/OH- - CO2 CH C O C R(H) 2 H5 Ph