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,

同类题4

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    My folks bought their first house in the early 1940s after Dad got a better job in Marquette, Michigan. We lived just inside the city limits in what was still a rural area.

    In the spring of 1948, when I was 6 years old, my parents bought a calf (小牛) to replace our cow, which had been killed the year before. So one day we drove to a local farm and returned with a white and brown calf we named Tubby.

    We didn't own a truck, so Tubby rode home in the backseat of Dad's car with my 9-year-old brother Steve, and me. As you can imagine, the trip was a lot of fun for us kids.

    Later that summer, Mom thought it would be cute to take a picture of me sitting on Tubby's back. All went well unti1 the snap of the camera shutter sent Tubby charging off on a run, with me holding on for dear life. I lasted for about 30 feet before I hit the ground. Mom was quick enough to shoot a follow-up picture, so we had photos of me both on and off Tubby!

    When summer had passed, the day arrived for poor Tubby to fill our freezer I must have been somewhere else with my Mom on the fateful day, because I have no memory of how it happened. All I knew was that the barn was empty, and that we had plenty of meat for dinners.

    I hadn't lived on a farm like my mother, so I didn't understand that what happened to Tubby was not unusual. Livestock aren't meant to be pets, and most farm kids know and accept that truth.

    Whenever we had beef for dinner, I would tearfully, “Is this Tubby” This went on for a couple of weeks until Dad had finally had enough and declared, “No more cows!” That made me feel a little better about poor Tubby.