问题 填空题

(15分)化合物F是有效的驱虫剂。其合成路线如下:

(1)化合物A的官能团为              。(填官能团的名称)

(2)反应③的反应类型是                

(3)在B—C的转化中,加入化合物X的结构简式为                   

(4)写出同时满足下列条件的E(C10H16O2)的一种同分异构体的结构简式:      

Ⅰ.分子中含有六元碳环;Ⅱ.分子中含有两个醛基。

(5)已知:

化合物是合成抗癌药物白黎芦醇的中间体,请写出以

为原料制备该化合物的合成路线流程图(无机试剂任用)。合成路线流程图示例如下:

答案

(1)醛基、碳碳双键(4分) (2)加成反应(2分)

(3)CH3OH(2分)(4)(或其它合理答案)(2分)

(全部正确的得5分;若有错误,每有一步正确的给1分)

(1)根据A的结构简式可知,化合物A的官能团为碳碳双键和醛基。

(2)C生成D的反应中,碳碳双键变成碳碳单键,因此是加成反应。

(3)根据C的结构简式可知,反应②是酯化反应,所以X是甲醇,结构简式为CH3OH。

(4)分子中含有两个醛基,所以六元环中不存在双键,全部是单键,所以结构简式可以是(可以改变取代基的位置,或者是1个乙基)。

(5)本题考查有机物的合成,一般采用逆推法。根据已知的信息和反应②⑤可知,合成路线是(见答案)。

问答题 简答题
单项选择题

There are many kinds of friends. Some are always (1) you, but don’t understand you. Some say only a few words to you, but understand you. Many people will step in your life, but only (2) friends leave footprints.
I shall always recall the autumn and the girl with the (3) . She will always bring back the friendship between us. I know she will always be my best friend.
It was the golden season. I could see the yellow leaves (4) with the cool (5) . In such a season, I liked walking alone on the roads covered with leaves, (6) to the sound of them.
Autumn is a (7) season and life is uninteresting. The free days always get me (8) . But one day, the sound of a violin (9) into my ears like a stream flowing in the mountains. I was so surprised that I jumped to see what it was. A young girl, standing in the wind, was (10) in playing her violin.
I had (11) seen her before. The music was so nice that I listened quietly. Lost in the music, I didn’t know that I had been (12) there for so long but my existence did not seem to disturb her.
Leaves were still falling. Every day she played the violin at the comer of the building (13) I went downstairs to watch her performance. I was the only listener. The autumn seemed no longer lonely and life became (14) . (15) we didn’t know each other, I thought we were already good friends. I believe she also loved me.
Autumn was nearly over. One day, when I was listening carefully, the sound suddenly (16) . To my astonishment, the girl came over to me.
"You must like music from the violin." she said.
"Yes. And you play very well. Why did you stop’." I asked.
Suddenly, a (17) expression appeared on her face and I could feel something unusual.
"I came here to see my grandmother, but now I must leave. I once played very badly. It was your listening every day that (18) me. " she said.
"In fact, it was your playing (19) gave me a meaningful autumn," I answered, " Let’s be friends. "
The girl smiled, and so did I. I never heard her play again in my life. I no longer went downstairs to listen to her. Only thick leaves were left behind. But I will always remember the fine figure of the girl. She is like a (20) —so short, so bright, like a shooting star giving off so much light that makes the autumn beautiful.

Ⅱ. 完形填空/Close

A.song

B.dream

C.fire

D.sister