4.酰化反应 R-C-X R--NHC-R R-c·O-C-R RNH, oO ArSo Cl,RNHO,S-O R一C-X Ro-NC-R RONH ArSO,C RoNOS No Reaction No Reaction4. 酰化反应 R NH2 R C O X R C O O C R O ArSO2 Cl R NHC R O RNHO2 S R2 NH R C O X ArSO2 Cl R2 NC R O R2 NO2 S R3 N No Reaction No Reaction