| 查看: 905 | 回复: 1 | ||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | ||
[求助]
有机化学机理外文翻译求助
|
||
|
In contrast we have found that a wide variety of allylic trichloroacetamidates, which are easily prepared in nearly quantitative yield from the corresponding alcohol and trichlorIn contrast we have found that a wide variety of allylic trichloroacetamidates,which are easily prepared in nearly quantitative yield from the corresponding alcohol and trichloroacetonitrile, readily undergo thermal rearrangement within a few hours in refluxing m-xylene to afford the corresponding trichloroacetamides in isolated yields in excess of 80 In no case has the trichloroacetamide with an unrearranged carbon skeleton been detected. This transformation is formulated as a simple electrocyclic reaction on the basis of its stereo- and regiospecificity which is similar to that observed in related [3,3]-sigmatropic processes. 2,8 For example, the trichloroacetimidate of 1-hepten-3-01 affords 2-heptenyltrichloroacetamide with a trans to cis ratio of at least 98:2.acetonitrile,~ readily undergo thermal rearrangement within a few hours in refluxing m-xylene to afford the corresponding trichloroacetamides in isolated yields in excess of 80 In no case has the trichloroacetamide with an unrearranged carbon skeleton been detected. This transformation is formulated as a simple electrocyclic reaction on the basis of its stereo- and regiospecificity which is similar to that observed in related [3,3]-sigmatropic processes. 2,8 For example, the trichloroacetimidate of 1-hepten-3-01 affords 2-heptenyltrichloroacetamide with a trans to cis ratio of at least 98:2. |
回复此楼» 猜你喜欢
博士去二本高校当辅导员，如何调整心态？
已经有8人回复
-
27细胞生物学申博
已经有5人回复
-
面上有专家说实验设备不是我们单位的
已经有5人回复
-
江苏省自然基金 什么时候出结果
已经有6人回复
-
广西大学-广州大学招聘博士后 欢迎广大优秀人才！！！
已经有11人回复
-
闲聊
已经有3人回复
-
如何查询2026年获批项目名称？
已经有3人回复
-
两块石头
已经有10人回复
-
售SCI一区T0P文章，我:8O.55.1.O.54,科目全,可伽急
已经有15人回复
-
面上没中，邀请各位路过的虫友分析一下分数
已经有13人回复
13599388598
金虫 (正式写手)
- 翻译EPI: 17
- 应助: 1 (幼儿园)
- 金币: 911.1
- 散金: 300
- 红花: 2
- 帖子: 364
- 在线: 52.1小时
- 虫号: 1472756
- 注册: 2011-11-02
- 专业: 水产生物营养与饲料学
【答案】应助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
185012831(金币+40, 翻译EPI+1): 翻译的很好，不过有些估计是您没学有机化学的原因，不是很通顺啊。。 2011-12-03 14:48:00
爱与雨下(金币+1): 2011-12-04 09:59:53
sltmac(金币+10): 2011-12-14 12:38:48
185012831(金币+40, 翻译EPI+1): 翻译的很好，不过有些估计是您没学有机化学的原因，不是很通顺啊。。 2011-12-03 14:48:00
爱与雨下(金币+1): 2011-12-04 09:59:53
sltmac(金币+10): 2011-12-14 12:38:48
|
楼主也整理下再求助呀 有很多重复内容呀 In contrast we have found that a wide variety of allylic trichloroacetamidates,which are easily prepared in nearly quantitative yield from the corresponding alcohol and trichloroacetonitrile, readily undergo thermal rearrangement within a few hours in refluxing m-xylene to afford the corresponding trichloroacetamides in isolated yields in excess of 80。In no case has the trichloroacetamide with an unrearranged carbon skeleton been detected. This transformation is formulated as a simple electrocyclic reaction on the basis of its stereo- and regiospecificity which is similar to that observed in related [3,3]-sigmatropic processes. For example, the trichloroacetimidate of 1-hepten-3-01 affords 2-heptenyltrichloroacetamide with a trans to cis ratio of at least 98:2.acetonitrile,~ readily undergo thermal rearrangement within a few hours in refluxing m-xylene to afford the corresponding trichloroacetamides in isolated yields in excess of 80。 对比我们发现的多种烯丙基trichloroacetamidate（三氯乙酰胺），他能从相应的酒精和三氯乙氰中容易制备得到，在回流的间二甲苯中几个小时内容易受到热重组影响，从而使得三氯乙酰胺的产量超过80%。 经过检测三氯乙酰胺的碳骨架无论如何都不会产生重排。这种转变是一种基于其实体和区域特异性的简单的电环化反应，这与已观察到的单键转移现象相似。 例如，1-hepten-3-1的三氯乙酰胺为2-heptenyltrichloroacetamide （庚烯基三氯乙酰胺）提供反顺比至少98:2的乙腈,使其在回流的间二甲苯中几个小时内容易受到热重组影响，从而使得三氯乙酰胺的产量超过80% |
2楼2011-12-03 13:32:44