问题7.5如何完成下列转变？ CH3 CH2 CH2 CH=CHCHCH2CH2C=CH CH3CH2OH一→CH3CH2C=CCH2CH2 CH CH2 CH2 CH2OH-CH3CH2CH2CH2COCH3 CH3CH2CH2CH2OH-CH3(CH2)sCH3问题7.5 如何完成下列转变？ CH3CH2CH2CH=CH2 CH3CH2CH2C≡CH CH3CH2OH CH3CH2C≡CCH2CH2 CH3CH2CH2CH2OH CH3CH2CH2CH2COCH3 CH3CH2CH2CH2OH CH3 (CH2 )8CH3