CH3 H;PO4 H3 OH (84%) (16%) 既然反应是按E1历程进行的，由于反应中间体为碳 正离子，就有可能先发生重排，然后再按Saytzeff规则脱 去一个阝-H而生成烯烃。如： 4 H CH3 CH3 CH一CH3 CH3 OH CH3 OH2Y CH3 重排 CH3 CH3 CH,=C-CH一CH3 CH,一C一 CH -CH3 CH3 CH3 CH3 (20%) (80%) Saytzeff产物 CH3 OH H3 PO4 CH3 CH3 + ( 84 % ) ( 16 % ) 既然反应是按E1历程进行的，由于反应中间体为碳 正离子，就有可能先发生重排，然后再按Saytzeff规则脱 去一个β- H 而生成烯烃。如： CH3 C CH CH3 CH3 CH3 OH H + CH3 C CH CH3 CH3 CH3 OH2 + CH3 C CH CH3 CH3 CH3 H2O + 重 排 CH3 C CH CH3 CH3 CH3 H + C C + CH3 CH3 CH3 CH3 CH2 C CH CH3 CH3 CH3 = + (20%) (80%) Saytzeff 产物