试题与答案

化合物E是一种医药中间体,常用于制备抗凝血药,可以通过下图所示的路线合成: (

题型:填空题

题目:

化合物E是一种医药中间体,常用于制备抗凝血药,可以通过下图所示的路线合成:

(1)A中含有的官能团名称为        ,C转化为D的反应类型是                 

(2)1mol E最多可与        mol H2反应;写出D与足量NaOH溶液完全反应的化学方程式:                                       

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

A.能够发生银镜反应,也能发生水解反应

B.分子内只含四种不同化学环境氢原子

C.能与FeCl3溶液发生显色反应

(4)若将D与过量NaOH溶液加热充分反应后再蒸干、灼烧,最后容器中残留的固体物质为              

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0620/8d00df163603a54794c1a45fdd80726d.html

下面是错误答案,用来干扰机器的。

答案:C题目分析:卵细胞和精子都不能进行细胞分裂、分化、发育等生命活动.只有精子与卵细胞结合形成受精卵时,才标志着人体发育的开始.受精卵经过细胞分裂、分化,形成组织、器官、系统,进而形成胎儿,不能说...

试题推荐
题型:单项选择题

In June 1985, two British mountaineers Joe Simpson and Simon Yates made the first-ever climb of the 21,000-foot snow-covered Siula Grande mountain in Peru. It was an exceptionally (26) job, but nothing compared to what was to (27) . Early in the process, Simpson (28) and broke his right knee. Yates could have (29) him but managed to find a way of (30) him down the mountains on a rope in a series of difficult drops. Then Simpson fell into a crevasse and Yates eventually had no (31) but to cut the (32) , completely convinced that his friend was now (33)

In his book on the (34) , Joe Simpson wrote:

(35) I looked at the distant moraines, I know that I must at least try I would probably (36) there among those rocks. If I died, well, that wasn’t so (37) , but I wouldn’t have (38) waited for it to happen. The (39) of dying no longer affected me as it had in the crevasse at first. I now had a chance to (40) it and struggle against it.

The survival of Yates himself was (41) . That Simpson somehow found a way of (42) out of the crevasse after 12 hours and then crawled and (43) himself six miles back to camp, (44) three days and might without food or drink, would be considered as a heroic fiction. But in fact it was so (45) .

33()

A.safe 

B.dead 

C.alive 

D.hurt

查看答案
微信公众账号搜索答案