NH CH3CH= CHCH3 CH2OCCH3 CH,CHCOOH CH3COCHCOOCHO 四、推测结构(20分) CH 1. A(CH3)C=CCH2 CHO Dk(CH3)=CHCH2CH2CCH3 B: CH3 CCH CH2 COOH B A: CH2= CHCHCH3 Brbr Br B: CH2-CH-CHCH3 C: CH2= CHCH= CH COOH COOH COoCH: OH OCOCH3 OH CHO CHO OH B: HO-TH H-OH CH2OH CH,OH (2R3R)-2,3,4-三羟基丁醛 (2S,3R-2,3,4-三羟基丁醛 五、按指定原料合成下列化合物(20分) SOC 1. CH3 CH2 CH2COOH CH3 CH CH2COCI CCH,CH CH2 CH CHCH3 CH3 CH2 CH2 COC Zn-Hg/HCl 无水ACl9． 10． 11． 12． 13． 四、推测结构（20 分） 1． 2． 3. 4. 五、按指定原料合成下列化合物（20 分） 1. (2R,3R)-2,3,4-三羟基丁醛 (2S,3R)-2,3,4-三羟基丁醛 NH2 + N2Cl N = N N(CH3)2 CH3CH = CHCH3 O CH2OCCH3 O CH3CHCOOH OH CH3COCH2COOCH2CH3 A: CH2 = CHCHCH3 Br B: CH2 -CH-CHCH3 Br Br Br C: CH2 = CHCH = CH2 COOH OH COOH OCOCH3 COOCH3 OH A: B: C: CHO H OH H OH CH2OH CHO HO H H OH CH2OH A: B: CCH2CH2CH3 O CH3CH2CH2COOH SOCl2 CH3CH2CH2COCl CH3CH2CH2COCl 无水AlCl3 Zn-Hg/HCl CH2CH2CH2CH3 A: (CH3 )2C = CCH2CH2CHO 或 (CH3 )2C=CHCH2CH2CCH3 CH3 O B: CH3CCH2CH2COOH O