【正文】
H B rC H 3 C H C H 2 C H 3ClC H 3 C H C H C H 3C H 3BrC H 3 C H C C H 3C H 3+ H 2 S O 4C H 3 C H 2 C C H 3C H 3O S O 2 O HH2OC H 3 C H 2 C C H 3C H 3O HC H 3 C H C C H 3C H 3+ H O B rC H3C H C C H3C H3Br O H+CH 2 C H C H 2 C H 3 H+C H 3 C H C H 2 C H 3C H 2 C H 2 C H 2 C H 3++1.2.ClC H 3 C H C H 2 C H 3+ + C H 3 C H C H 2 C H 3ClC H3C H C C H3C H3+ Cl+C H3C H C C H3C H3ClC H3C H C C H3C H3Cl++1.2.C H3C H C C H3C H3Cl O HO H+++1. 2. 3.哪種碳正離子更容易形成? Br- Br, Cl- Cl, 生成二鹵代烷,和 Br2- CCl4的反應(yīng)可鑒別烯烴 H- OH/H+,生成醇 H- Br, H- Cl,生成鹵代烷 HO- Br, HO- Cl ,生成鹵代醇 H- OSO2OH,生成烷基硫酸氫酯,可用于除去少量烯烴雜質(zhì), 進(jìn)一步水解生成醇 P107 5 (2)四元環(huán)過渡態(tài) HBH2 反應(yīng)條件: 1) BH3 2) H2O2/OH ( 3)催化加氫 H2/催化劑 ( 4)游離基歷程,反馬氏規(guī)則 HBr/過氧化物 由 CH3CHBrCH3制 CH3CH2CH2Br CH 2 C H C H 2 C H 3 C H 3 C H 2 C H ( C H 2 ) 3 C H 3C H 31.C H 3 C H 2 C H 2 O HC H 3 C H C H 3O H2.( 5)聚合反應(yīng) ( 1)與臭氧反應(yīng) 例題: 1.某烯烴經(jīng)催化加氫得 2-甲