CHSC=CMgBr ()EO-15C (2)H3O 8.写出下列反应的产物。 (1)c6H3C≡cH+CH3OH(过量)BsO4 (2)C2H5 CH-NCH3 NaHSO C6HsCH-A OCH3 HOCH2 CH2OH HOCH, CHCH, CH,CCH, CH, CHCH2OH (4) CH (5) CF3CH=O+CH; CH(OCH,h -H HCI (6)HOCH2 CH2CH2=O+ CH3OH Ooo C6HSCCCC6H6 CH3O 9.下列化合物中哪些在碱性溶液中会发生外消旋化? (1)(R)-2-甲基丁醛 (2)(S)-3-甲基2-庚酮 (3)(S)-3-甲基环己酮 (4)(R)-1,2,3-三苯基-1-丙酮 10.下面化合物中哪些可以起卤仿反应。 CH3 CH2 CHO CH3 CH(OH)CH2 CH2 CH3 CH3 CH2 CH2OH CH3 CH2COCH3 C6H5 COCH3 CH3 COCH, CH2 COCH sHsCHOHCH3 CHs CH2 CHOH 1l.下列化合物可以从什么原料合成? CH3COCH, CHCH, CH3 CH CHCH, COCHCH CH3 CH3CH, COCHCHCH2CH3 (CH3)CHCHCCHO (6) OH CH3(3) (2)H3O + (1) Et2O, -15 oC H2C CH2 O + C2H5C CMgBr 8．写出下列反应的产物。 (1) C6H5C CH + CH3OH (过 量 ) H2SO4 (2) C2H5CH NCH3 + NaHSO3 (3) C6H5CH C H OCH3 + HOCH2CH2OH H3O + (4) HOCH2CHCH2CH2CCH2CH2CHCH2OH CH3 O CH3 (5) CF3CH O + CH3CH(OCH3 )2 H + (6) HOCH2CH2CH2CH O + CH3OH HCl (7) H + C6H5CCCC6H6 CH3OH OOO + 9．下列化合物中哪些在碱性溶液中会发生外消旋化？ (1) (R)-2-甲基丁醛 (2) (S)-3-甲基-2-庚酮 (3) (S)-3-甲基环己酮 (4) (R)-1,2,3-三苯基-1-丙酮 10．下面化合物中哪些可以起卤仿反应。 CH3CH2CHO CH3CH(OH)CH2CH2CH3 CH3CH2CH2OH CH3CH2COCH3 C6H5COCH3 CH3COCH2CH2COCH3 C6H5CHOHCH3 C6H5CH2CH2OH 11. 下列化合物可以从什么原料合成？ (1) O (2) CH3COCH2CHCH2CH3 OH (3) CH3CHCH2COCH2CH3 OH (4) O C(CH3 )3 (5) CH3CH2COCHCHCH2CH3 CH3 OH (6) (CH3 )2CHCHCCHO OH CH3 CH3