CLC H2-ch2cl+2 NaOH- ethanol-HC trich+2 NaCl+2 H2O,

HC triple ch CH-Na 1 10 +00 or nan H2-HC HC triple CNa, h2c = cHCh3+HCl-ch3clch3, hc triple CNA+CH 3c lch 3-HC triple C-CH(CH3)2,

HC tric-ch(CH3)2+HCl-h2c = ccl(CH3)2，

H2C = CCl(CH3)2+NaOH-H2O-H2C = COH(CH3)2+NaCl，

H2C = COH(CH3)2+ Na-H2C=CONa(CH3)2+H2, H2c = ConA (CH3) 2+HCl-Na2O2-CLCHH2-Chona (CH3) 2,

CLC H2-CHONa(CH3)2+c 6 H5 MgCl-c 6 H5 ch 2 CHONa(CH3)2+MGC L2，

C6H5CH2CHONa(CH3)2+H2SO4 concentration-

C6H5CH=CH(CH3)2+H2O