第四节炔烃的制备 一、用邻二卤代烷和偕二卤代烷制备 CH3CHBr-CHBrCH3KOH-C2HsOH or NaNH2的矿物油<100C CH,CH2-CBr2CH3 K0H-C2H,0H,>150C ◆CH3C=CCH3 CH.CH=CCH3- Br NaNH2的矿物油，150-160°C CH CH,C=CH一、用邻二卤代烷和偕二卤代烷制备 CH3CHBr-CHBrCH3 KOH-C2H5OH or NaNH2的矿物油 <100oC CH3CH2 -CBr2CH3 CH3CH=CCH3 Br KOH-C2H5OH, >150oC NaNH2的矿物油 , 150-160o C CH3CCCH3 NaNH2 KOH-C2H5OH 第四节 炔烃的制备 CH3CH2CCH