有兴趣做大学有机试卷的同学做一下吧 不是我们学校的？来吧 让大家迅速变成大学生 华东理工大学2006–2007学年第一学期 《 有机化学 》课程期末考试试卷??A??2006.1.24 开课学院：理优05级??专业：?????????? 考试形式：一页开卷，所需时间：120分钟 考生姓名：??????????????学号：????????????????????班级：?????????????? 任课教师：荣国斌 题序????一????二???? 三????四????五????六????七????八????总 分 得分???????????????????????????????????????????? 评卷人???????????????????????????????????????????? 可用中文或英文回答一~七各题（共八页，八大题）： 一.(1) Indicate all isomeric C4H9+ carbocations, which one is the most stable? (2 points) (2) Write the appropriate resonance structures of anion 1 and show which form is more stable? (2 points) (3) March the boiling points(9℃, 28℃, 36℃) with the appropriate alkane: pentane, 2-methylbutane, 2,2-dimethylpropane. (2 point) (4) Draw the most stable conformation of 1-tert-butyl-1-methylcyclohexane. (2 point) (5) Classify each of the following molecules as aromatic or not according to Huckel's rule. (4 point) : (6) Assign absolute configurations as R or S for the compound 1 and E or Z for 2. (5 points) (7) Give two structures of the product 4 and 5 from the hydration of 3. Indicate which one is optically active and another isomer is not. (5 points) 二. The Compound A, C6H12, reacts with 1 molar equivalent of H2 over a palladium catalyst. A react with OsO4 to give a diol, B. When react with KMnO4 in acidic solution, A give two fragments, one is CH3CH2CO2H and the other is a ketone, C. What are the structures of A，B, and C? (6 point) 三. Propose a mechanism to account the following reaction. (10 points) 四 The synthetic sequences shown below are unlikely to occur as written. Tell what is wrong with each, and predict the true product. (6 points) 五. How would you carry out the following transformation? Indicate the products or reagent (1~7 )you would use in each case. (24 points) 六. （1）The 1H NMR spectra of compound A, C8H9Br are shown. Propose a structure for A, and assign peaks in the spectra to your structure. (4 points) （2）How would you use MS, or IR, or UV to distinguish between the following pairs of compounds, explain your choice. (6 points) 七. How would you synthesize the following two target molecules starting from the given compound? (12 points) 八. Translate the following message to Chinese: (10 points) Although useful, the Friedel-Crafts alkylation reaction has several limitations. For one thing, only alkyl halides can be used; aryl halides such as chlorobenzene don’t react. In addition, Friedel-Crafts reactions don’t succeed on aromatic rings that are already substituted by the groups –NO2, –CN, –SO3H, or –COR. Such aromatic rings are much less reactive than benzene for reasons we’ll discuss in Section 5.7 and 5.8. Closely related to the Friedel-Crafts alkylation reaction is the Friedel-Crafts acylation reaction. When an aromatic compound is treated with a carboxylic acid chloride, RCOCl, in the presence of AlCl3, an acyl group, –COR, is introduced onto the ring.查看更多1个回答 . 13人已关注
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