题干

化合物Ⅴ是中药黄芩中的主要活性成分之一,具有抗氧化和抗肿瘤作用.化合物Ⅴ也可通过如图所示方法合成:

回答下列问题:

(1)化合物Ⅲ的分子式为____  ,1mol该物质完全燃烧需消耗____ mol O2

(2)化合物Ⅱ的合成方法为:

合成肉桂酸的反应式中,反应物的物质的量之比为1:1.反应物A的结构简式是 ____  .

(3)反应①的反应类型为____ .化合物Ⅰ和Ⅱ反应还可以得到一种酯,生成该酯的反应方程式为 ____  .

(4)下列关于化合物Ⅳ、Ⅴ的说法正确的是____ (填序号).

a.都属于芳香化合物

b.都能与H2发生加成反应,Ⅳ消耗的H2更多

c.都能使酸性KMnO4溶液褪色

d.都能与FeCl3溶液发生显色反应

(5)满足以下条件的化合物Ⅰ的同分异构体Ⅵ的结构简式为 ____  .

①遇FeCl3溶液显示特征颜色

②1 molⅥ与浓溴水反应,最多消耗1mol Br2

③Ⅵ的核磁共振氢谱有五组峰,峰面积之比为1:1:2:2:6.

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答案(点此获取答案解析)

C18H18O5;20,20,,取代反应,,ac,

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    At what age does a child became an adult?____Here are a few examples.

    First, in some North American Indian culture, a boy became a man around the age of 13. At that time, he would go into the woods alone, without food or water, for several days.____Girls became adult women as soon as they were old to have babies, also around the age of 12 or 13.

    In the Jewish religion, children spend years studying their history and religion. Then, at age of 13 for boys and 12 for girls, they go through an important religious ceremony.____

    In Japan today, young people become legal adult at age 20. Each year on January 15th, they celebrate “Coming-of-Age Day”, when the 20-year-olds in a town are invited to attend to special ceremony.____

    Finally, in the United States, the passage into adulthood takes several years. American teenagers look forward to their 16th birthday because in most states that is the age when can get a driver's license. The legal age of adulthood is 18, when Americans can vote, get married and work full-time. However, they must wait until age 21 to buy alcohol.____

A. Many people celebrate their 21st birthday by having a drink with friends in a bar.

B. It's hard to answer the question.

C. The answer depends on your culture or religion.

D. From that day, they are adults, and they become responsible for their own religious development.

E. When he returned safely, he became an adult man.

F. The teenagers are not allowed to drink alcohol.

G. They wear traditional clothes, listen to speeches and visit old friends.