立学学 ERSITY 搜工学
2021/2/23 1 立体化学课堂练习 化学生物工程系
The Nobel Prize in Chemistry 1902 s9 Hermann Emil Fischer (1852~1919) in recognition of the extraordinary services he has rendered by his work on sugar and purine syntheses 2021/2/23 2
2021/2/23 2 The Nobel Prize in Chemistry 1902 "in recognition of the extraordinary services he has rendered by his work on sugar and purine syntheses" Hermann Emil Fischer (1852 ~ 1919)
◎发现酒石酸钠铵晶体外形不对称 1848年 CooNa Louis pasteur CooNa (1822~1895 OH HO H HO oh 法国化学家、细学家 COONH4 COONH
2021/2/23 3 发现酒石酸钠铵晶体外形不对称 Louis Pasteur (1822~1895) 1848 年 COONa H OH COONH4 HO H COONa HO H COONH4 H OH 法国化学家 、细菌学家
The Nobel Prize in Chemistry 2001 for their work on chirally catalysedfor his work on chirally hydrogenation reactions catalysed oxidation reactions William s. Knowles yoji Noyori K. Barry Sharpless (1917~) (1938~) (1941~)
2021/2/23 4 William S. Knowles (1917 ~ ) Ryoji Noyori (1938 ~ ) K. Barry Sharpless (1941 ~ ) The Nobel Prize in Chemistry 2001 "for their work on chirally catalysed hydrogenation reactions" "for his work on chirally catalysed oxidation reactions
下列化合物 (1)指出有多少立体异构体; (2)写出其 Fischer投影式 (3)指出对映体(用恉出)、非对映体、 内消旋体(用meso表示); (4)给每个手性碳原子以R,S构型: (1)CH3 CHB rCHBrCH3 (2)CH3 CH2 CHB rCHBrCH3 (3)CH3 CHCICHCICHCICH3 (4)CH3 CHBrCHCICHCICH3 (5) CH3CH2 CC12 CH3 2021/2/23
2021/2/23 5 一、下列化合物: (1)指出有多少立体异构体; (2)写出其Fischer投影式; (3)指出对映体(用 指出)、非对映体、 内消旋体(用meso表示); (4)给每个手性碳原子以R,S构型:
解 (1)2个相同手性碳原子,2个立体异构体: CH CH H Br B H(乃 Br s) (S)Br-H H Br( Br (R) CH C2H5 CH meso 非对映体) (2)2个手性碳原子,4个立体异构体: C CH CH3 CH Br Br-H(R (S)H Br Br H(R (R H Br B H S B H H r CH C2H C2H5 2021/2/23 非对映体)
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CH 3 CH (S)H C1 H(()H C1 H C1(S) CHCI CHCI H--C1()c1 H (S)C1 H C1 (R) (R)H C1 H C1() CH CH CH3 CH m meso 非对映体) 2021/2/23
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CH 5 (SH Br Br H (R (RBr H H Br(s ()H C1 H (S (R H H (S) (RH C1 H()(H H ( S CH CH CH 5 (S)H-Br Br--H(R (S)H-Br BrH(R (S)C1 C1((乃H C1 C1 ()H C1 H (S) (S)C1 H H C1(乃 CH CH CH (士) 各对对映体之间都是非对映体的关系。 3)3先手性碳原子,非手性分子,无立体异构体
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二、麻黄素具有的结构有: CH(OH)CH(NHCH3)-CH3 写出它所有光活异构体的构型。 解:有4个光活异构体,可表示如下: 5 CH 3 H NHCH3 H NHCH CHNH H CH3NH H H OH HO H HO H OH 5 615 (d) 2021/2/23
2021/2/23 9 二、麻黄素具有的结构有: 写出它所有光活异构体的构型
HANK YOo ERSITY 2021/2/23 理工 10
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