CH(CH3)2 稀QH,(CH2 CHCH,CH=CHO 2.以乙醇为唯一碳源合成CH3CH=CHCH2Br 答: C2 HOH -Cu.30C℃CH3CHo稀QHCH3CH= CHCHO LIAIH4 CH3 CH= CHCH2CHO Br3→CH3CH=CHCH2Br 0°C 3.以甲醇和2-氯丁烷为原料合成CHCH2CH( CHCHO KCrO CHOH HCHO H3O,△ CH,CHCH,CH-- ch1HCHO+ Mgcl KCrO CH,CHCHCH HQ,△~ CH3CH2CHCHO CH,OH CH3 4.以丙酮为原料合成(CH32C= CHCOOH OH 5%NaOH 2 CH3COCH (CH3)2 CCH2CCH3 △ 答 -HO (CH3)2C=CHCCH3 1. 1,/NaOH (CH3)2C=CHCOOH +CHl, 2.H3O OH 5.以B(H)CHO为原料合成(CH3)2C(CH2)OH Br(CH2)3CHOH- Br(CH2)3CH -OC2H5_Mg - EtOH OH BrIg(Ch2) O3CHOC2Hs 1 CHCOCH3(CH3)2C(CH2)3CHO COCH 2. hOt45 (CH3 )2CHCH2CH CCHO CH(CH3 )2 稀 OH - 2．以乙醇为唯一碳源合成 CH CHCH2Br 3CH 答： CH3CHO CH3CH Cu, 稀 OH - C2H5OH 300 oC CHCHO CH CHCH2Br 3CH CHCH2CHO LiAlH4 PBr3 0 oC CH3CH 3．以甲醇和 2-氯丁烷为原料合成 CH3CH2CH(CH3)CHO 答： CH3OH HCHO K2Cr2O7 H3O + , Mg Et2O CH3CHCH2CH3 2. H3O + Cl CH3CHCH2CH3 MgCl 1. HCHO CH3 K2Cr2O7 H3O + , CH3CHCH2CH3 CH2OH CH3CH2CHCHO 4．以丙酮为原料合成 (CH3 )2C CHCOOH 答： 2 CH3COCH3 5%NaOH (CH3 )2CCH2CCH3 OH O -H2O 2. H3O + (CH3 )2C CHCOOH O CHCCH3 1. I2 /NaOH (CH3 )2C + CHI3 5．以 Br(CH2)3CHO 为原料合成 OH (CH3 )2C(CH2 )4OH 答： Mg Et2O Br(CH2 )3CHO EtOH H + Br(CH2 )3CH OC2H5 OC2H5 2. H3O + BrMg(CH2 )3CH OC2H5 OC2H5 1. CH3COCH3 (CH3 )2C(CH2 )3CHO OH