LIAIH PB CH3 CH=CHCH,CHO AC CHCH=CHCH,Br 3.以甲醇和2-氯丁烷为原料合成CH3CH2CH( CH3)CHO KCr2O7 CHOH HCHO 答 H3O,△ 1. HCHO CH3CHCH2 CH3 EL,O CH3 CHCH- C13 2.H3O MgCl KCrO CH3 CHCH2CH CH2,CHCHO H3O+,△ CH,OH CH 4.以丙酮为原料合成(CH3)2C= CHCOOH OH 2 CH2 COCH 5%NaOH △ 答 CH3)2CCH2CCH3-H20 ( CH3),C=CHCCH3-I. Na0H-(CH3),C=CHCOOH +CHI3+ OH 5.以BCH2)CHO为原料合成(CH3)2CCH24OH Br(CH,)cHo-EtoH OC2H5 Br(Ch2)3CH 答 OCH o BrIg(Ch2)3Ch 1. CH: COCH COC,Hs2hot (CH3)2C( CH2)3CHO OH aBHa (CH3)C(CH2)4OH 6.以乙烯和丙酮为原料合成CH=CHCH2OC(CH3)2CH1CH2CH CH3 CH=CH2 BrCHoCh= cha46 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 OH (CH3 )2C(CH2 )4OH NaBH4 6．以乙烯和丙酮为原料合成 CH2 CHCH2OC(CH3 )2CH2CH2CH3 答： CH3CH CH2 BrCH2CH CH2 NBS CCl4