本章重点内容 Mechanisms of ele2 and e1cB E2 Reaction Reactivity Regioselectivity E1 Reaction Stereochemistry yy. Competition of E2/E1, E/S 五,E1 cB Reaction A. Other Elimination Reactions本章重点内容 一．Mechanisms of E1, E2, and E1cB 二．E2 Reaction 三．E1 Reactipn 四．Competition of E2/E1, E/S 五．E1cB Reaction 六．Other Elimination Reactions Reactivity Regeoselectivity Stereochemistry