(二)、消除反应: 阝-消除: NaOH/乙醇 >C=c< 3°>2°>1° Br H3C-CH2 CH-CH3->H3CHC=CHCH3+H3CH2CHC=CH2 81% 19% Br CH3 + H:CH2CC=CH2 CH3 CH3 H3C 71% 29% 主要生成双键上烃基取代较多的稀一扎依采夫规则 Organic Chem Organic Chem (二)、消除反应: β- 消除: 主要生成双键上烃基取代较多的稀—扎依采夫规则 H3C CH2 CH CH3 Br H3CHC CHCH3 H3CH2CHC CH2 + H3C CH2 C CH3 Br CH3 H3CHC C H3CH2CC CH2 + CH3 CH3 H3C 81% 19% 71% 29% C CH X NaOH / 乙醇 C C 3° > 2° > 1°