1) trans-stereoisomer
反应立体异构体
2) stereo-differentating reactions
立体差异反应
3) stereoisomerism
[英][,steriəuai'sɔmərizəm] [美][,stɛrɪoaɪ'sɑmərɪzṃ]
立体异构
1.
The teaching of stereoisomerism is full of difficulties in organic chemistry and students are often ambiguous to some concepts of them.
详细讨论了立体异构命名中的手性元素和配位体大小的顺序规则 ,并分析了反应过程中反应物构型和反应符号 (R或S)之间的变化关系 ,同时讨论了立体选择性和立体定向性两个概念之间的区
4) stereoisomer
[英][,steriəu'aisəmə] [美][,stɛrɪo'aɪsəmɚ]
立体异构体
1.
Using propenyl as starting material, the total syntheses of (±)-Cnidilide 1 and its stereoisomer 2 is described through icolated cis- and trans-isomers of products in such reactions as Wittig reaction、Classen rearragement and Grignard reaction successively.
（±）－蛇床酞内酯及其立体异构体的合成王兴明，李绍白，李裕林（兰州大学应用有机国家重点实验室，兰州大学有机化学研究所兰州７３００００）关键词蛇床酞内酯，立体异构体，合成蛇床酞内酯（３Ｓ、３ａＳ、７ａＲ－３－正丁基－３ａ、４、５、７ａ－。
5) stereoisomers
立体异构体
1.
The separation of four stereoisomers of cypermethrin has been studied by capillary gas chromatography.
OV - 1石英毛细管柱 ,FID氢火焰离子化检测器 ,在柱温 2 2 0℃ ,对氯氰菊酯四个立体异构体进行了完全分离。
2.
Four optically pure stereoisomers of 5,6-dimethylidenebicyclo [2.
1]庚-2-醇的四种光学纯立体异构体的合成及其比旋光度[α]_D,并通过它们之间的相互关系,确定了它们的绝对构型。
3.
wo compounds were obtained in preparing 16ξ-bromo-17, 17-ethylene dioxyestra-1, 3, 5 (10)-trien-3-of-acetate from 17, 17-ethytenedioxyestra-1, 3, 5(10)-trien-3 of-acetate in different conditions, and by using physical and chemical methods, these two compounds were proved as stereoisomers with same formula and structure.
通过物理方法和化学方法，证明这２种化合物为立体异构体，并确定了它们的构型。
6) Isomer
[英]['aisəmə] [美]['aɪsəmɚ]
立体异构体
1.
Objective:To establish a method to separate and determine the four isomers of tramadol hydrochloride in the oral preparations of trans -tramadol hydrochloride.
目的 :建立盐酸反式曲马朵口服制剂中盐酸曲马朵 4种立体异构体的分离测定方法。
补充资料：反应素性变态反应
反应素性变态反应
见"I型变态反应"。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条