7£®

CH3CHCH2OHCH3+H2SO4CH3CHCH2OH2CH3+H2OCH3CHCH2ÖØÅÅHǨÒÆCH3+CH3CCH3CH3

+ 8£®

£«CH3CCH3CH3H+C(CH3)3H+C(CH3)2

CCH2H+CH3CCH3PhCCH2¼Ó³É£«CH3CH3+H3CCH3CCH2+CPh CH3H3C+CH3H+H3CH3CCH3Ph

9£®

HPhCH3

CH3CH2CH2Br+AlBr3AlBr4CH3CH2CH2++ÖØÅÅCH3CHCH3+

£«CH3CHCH3CH(CH3)2HH+CH(CH3)2