ORGANIC CHEMISTRY Chapter 17 O C|H -C-R C-C-R C=C-R B: O R OH HB LO HB H B: C-C CC、+B: R R R Enol form Enolate anion Keto form 烯醇式 烯醇负离子 酮式 Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 17 C H C O R B C C O R C C O R C C O R δ δ C C O R δ δ Enolate anion 烯醇负离子 C C OH R C H C O R B + + B HB HB Keto form 酮式 Enol form 烯醇式