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在"英语"词典里pericyclic}的意思

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英语中PERICYCLIC的发音

pericyclic  [ˌpɛrɪˈsaɪklɪk] play
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PERICYCLIC的语法类别

noun
形容词
动词
副词
代词
介词
连词
限定词
感叹词

PERICYCLIC在英语中的意思是什么?

点击查看«pericyclic»在英语词典里的原始定义
点击查看在中文词典里此定义的自动翻译

周期反应

Pericyclic reaction

在有机化学中,周期反应是一种有机反应,其中分子的过渡态具有循环几何形状,并且反应以协调的方式进行。 周期反应通常是重排反应。 周期反应的主要类型是:一般来说,这些被认为是平衡过程,尽管可以通过设计产物处于显着较低能级的反应来将反应推向一个方向。 这是由于Le Chatelier的原理的单分解释。 周期性反应往往具有与它们相关的逐步激进过程。 一些周期性反应,如环加成,是“有争议的”,因为它们的机制并不明确地被认为是协调一致的。 周期反应通常也具有金属催化的类似物,尽管通常这些在技术上也不是周期性的,因为它们通过金属稳定的中间体进行,因此不协调。 由具有16π系统的Albert Eschenmoser进行的corrin合成中使用了大的光诱导氢信号转移。 In organic chemistry, a pericyclic reaction is a type of organic reaction wherein the transition state of the molecule has a cyclic geometry, and the reaction progresses in a concerted fashion. Pericyclic reactions are usually rearrangement reactions. The major classes of pericyclic reactions are: In general, these are considered to be equilibrium processes, although it is possible to push the reaction in one direction by designing a reaction by which the product is at a significantly lower energy level; this is due to a unimolecular interpretation of Le Chatelier's principle. Pericyclic reactions often have related stepwise radical processes associated with them. Some pericyclic reactions, such as the cycloaddition, are 'controversial' because their mechanism is not definitively known to be concerted. Pericyclic reactions also often have metal-catalyzed analogs, although usually these are also not technically pericyclic, since they proceed via metal-stabilized intermediates, and therefore are not concerted. A large photoinduced hydrogen sigmatropic shift was utilized in a corrin synthesis performed by Albert Eschenmoser containing a 16π system.

在英语 词典里pericyclic的定义

字典中的周环的定义涉及内皮下的一层植物组织:围绕着根和某些茎中的导电组织。

The definition of pericyclic in the dictionary is relating to a layer of plant tissue beneath the endodermis: surrounds the conducting tissue in roots and certain stems.

点击查看«pericyclic»在英语词典里的原始定义
点击查看在中文词典里此定义的自动翻译

PERICYCLIC押韵的英语 单词


acyclic
eɪˈsaɪklɪk
alicyclic
ˌælɪˈsaɪklɪk
bicyclic
baɪˈsaɪklɪk
carbocyclic
ˌkɑːbəʊˈsaɪklɪk
cyclic
ˈsaɪklɪk
dicyclic
daɪˈsaɪklɪk
encyclic
ɪnˈsɪklɪk
epicyclic
ɛpɪˈsaɪklɪk
exocyclic
ˌɛksəʊˈsaɪklɪk
hemicyclic
ˌhemɪˈsaɪklɪk
heterocyclic
ˌhɛtərəʊˈsaɪklɪk
homocyclic
ˌhəʊməʊˈsaɪklɪk
isocyclic
ˌaɪsəʊˈsaɪklɪk
macrocyclic
ˌmækrəʊˈsɪklɪk
monocyclic
ˌmɒnəʊˈsaɪklɪk
noncyclic
ˌnɒnˈsɪklɪk
pentacyclic
ˌpɛntəˈsɪklɪk
polycyclic
ˌpɒlɪˈsaɪklɪk
tetracyclic
ˌtɛtrəˈsaɪklɪk
tricyclic
traɪˈsaɪklɪk

PERICYCLIC一样开头的英语单词

perichondria
perichondrial
perichondrium
perichoresis
periclase
periclastic
Periclean
Pericles
periclinal
pericline
periclitate
pericopal
pericope
pericopic
pericrania
pericranial
pericranium
periculous
pericycle
pericynthion

PERICYCLIC一样开头的英语单词

acrylic
alcoholic
catholic
Central African Republic
concyclic
Czech Republic
Dominican Republic
garlic
general public
hydraulic
italic
last-cyclic
member of the public
metabolic
metallic
post-cyclic
psychedelic
public
republic
symbolic

英语近义词词典里pericyclic的近义词和反义词

近义词

«pericyclic»的25种语言翻译

翻译者
online translator

PERICYCLIC的翻译

通过我们的英语多语言翻译器,找到pericyclic25种语言翻译
该章节所呈现的将pericyclic由 英语向其他语言的翻译是通过自动统计翻译获得的;在英语中基本的翻译单位是单词«pericyclic»。

翻译者英语 - 中文

周环
1,325 数百万发言者

翻译者英语 - 西班牙语

pericíclica
570 数百万发言者

英语

pericyclic
510 数百万发言者

翻译者英语 - 印地语

pericyclic
380 数百万发言者
ar

翻译者英语 - 阿拉伯语

pericyclic
280 数百万发言者

翻译者英语 - 俄语

перициклической
278 数百万发言者

翻译者英语 - 葡萄牙语

pericíclica
270 数百万发言者

翻译者英语 - 孟加拉语

pericyclic
260 数百万发言者

翻译者英语 - 法语

péricyclique
220 数百万发言者

翻译者英语 - 马来语

Pericyclic
190 数百万发言者

翻译者英语 - 德语

pericyclischer
180 数百万发言者

翻译者英语 - 日语

ペリ
130 数百万发言者

翻译者英语 - 韩语

고리 형 협동
85 数百万发言者

翻译者英语 - 印尼爪哇语

Pericyclic
85 数百万发言者
vi

翻译者英语 - 越南语

pericyclic
80 数百万发言者

翻译者英语 - 泰米尔语

pericyclic
75 数百万发言者

翻译者英语 - 马拉地语

पेरिसक्लिक
75 数百万发言者

翻译者英语 - 土耳其语

perisiklik
70 数百万发言者

翻译者英语 - 意大利语

pericicliche
65 数百万发言者

翻译者英语 - 波兰语

Perycykliczna
50 数百万发言者

翻译者英语 - 乌克兰语

періцікліческой
40 数百万发言者

翻译者英语 - 罗马尼亚语

pericyclic
30 数百万发言者
el

翻译者英语 - 希腊语

pericyclic
15 数百万发言者
af

翻译者英语 - 布尔语(南非荷兰语)

pericyclische
14 数百万发言者
sv

翻译者英语 - 瑞典语

pericykliska
10 数百万发言者
no

翻译者英语 - 挪威语

pericyclic
5 数百万发言者

pericyclic的使用趋势

趋势

词语 «PERICYCLIC»的使用趋势

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pericyclic的主要搜索趋势和常见用法
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词语«PERICYCLIC» 随时间而变化的使用频率

该图表展现了单词«pericyclic»在过去500年中的用法频率的每年演化其实施是基于分析词语«pericyclic»从1500年到现在在 英语数字出版物中出现的频率。

pericyclic的英语文献、引用和新闻中的使用范例

示例

«PERICYCLIC»相关的英语书籍

在以下的参考文献中发现pericyclic的用法。与pericyclic相关的书籍以及同一来源的简短摘要提供其在 英语文献中的使用情境。
1
Photochemistry And Pericyclic Reactions
This Book Is Especially Designed According To The Model Curriculum Of M.Sc. (Prev.) (Pericyclic Reactions) And M.Sc. (Final) (Photochemistry Compulsory Paper Viii) Suggested By The University Grants Commission, New Delhi.
J. Singh, 2005
2
Pericyclic reactions: a textbook : reactions, applications ...
Over 1200 references from the original literature are cited. The only up-to-date work of its kind on the market, this is an invaluable tool for students and chemistry teachers, organic chemists, and libraries.
Sethuraman Sankararaman, 2005
3
Pericyclic Reactions
At this stage, a wider range of reactions is introduced, and the governing principles explained. This book does that.
Ian Fleming, 1998
4
Overlap determinant method in the theory of pericyclic reactions
The author summarizes the development and the applications of overlap determinant method in various fields of pericyclic reactivity.
Robert Ponec, 1995
5
Stereochemistry of Organic Compounds: Principles and ...
Dynamic. Stereochemistry. III. : Pericyclic. Reactions. 14.1 Introduction The stereochemistry of reactions so far discussed is based on selective transformation of stereoheterotopic faces and ligands distinguished by intramolecular symmetry.
D. Nasipuri, 1994
6
Organic Chemistry
In this chapter a group of concerted (one-step) reactions, called pericyclic reactions, that involve none of these intermediates is discussed. The mechanisms of these reactions are exceedingly simple because they consist of a single step.
Joseph Hornback, 2005
7
Comprehensive Organic Reactions in Aqueous Media
12.1 INTRODUCTION Pericyclic reactions are reactions that occur by a concerted process through a cyclic transition state. Such reactions include cycloadditions, sigmatropic rearrangements, and electrocyclizations.1 Based on Klopman's ...
Chao-Jun Li, Tak-Hang Chan, 2007
8
Organic Reaction Mechanisms, 2007
Pericyclic. Reactions. 8. K. Armstrong Formerly of Department of Chemistry, University of Glasgow [3,31-Sigmatropic Rearrangements All-carbon Pericyclic Systems One Heteroatom Two or More Heteroatoms [2,3]-Sigmatropic ...
A. C. Knipe, 2011
9
Molecular Orbitals and Organic Chemical Reactions
Pericyclic reactions 20,21arethesecond distinctclassofthethree, moreor less exclusive categoriesoforganic reactionsionic(Chapters 4and5), pericyclic (this Chapter) and radical (Chapter 7). Their distinctive features are that they have cyclic ...
Ian Fleming, 2011
10
Organic Synthesis: The Science Behind the Art
The Woodward-Hoffmann theory makes it possible to predict accurately both the conditions necessary for carrying out a particular pericyclic reaction and its stereochemical outcome. In particular, it became clear that the photochemical ...
William A. Smit, Alekseĭ Feodosʹevich Bochkov, Ron Caple, 1998

包含词语«PERICYCLIC»的新条目

找出国内和国际出版社所讨论的内容,以及词语pericyclic在以下新条目的上下文中是如何使用的。
1
Researchers provide evidence for a non-enzymatic pathway to …
The product is formed through a pathway known as a bis-pericyclic process, passing through a transition state in which the two possible modes ... «Phys.Org, 七月 15»
2
Here's why Sanskrit is not a dead language and should be at the …
... virtues like honesty, fidelity, and courage which one hopes they will imbibe along with differential equations and pericyclic equations. «Daily News & Analysis, 十二月 14»
3
Filming chemistry with a high speed x-ray camera
Filming bond making and bond breaking during a pericyclic reaction: We show theoretically that the ultrafast x-ray camera is not only sensitive ... «Nanowerk, 十二月 14»
4
Organic chemistry: structure, mechanism and synthesis
A good example is the inclusion of thymine dimerisation in the pericyclic chemistry section. From the introductory pages onwards, the authors ... «Royal Society of Chemistry, 十一月 14»
5
List: 2014 Colorado State University graduates
Hydrocarbons via Pericyclic Decarboxylation of α,. β- and β, γ- Unsaturated Fatty Acids using Polycyclic. Aromatic Hydrocarbon (PAH) Solvent ... «The Coloradoan, 五月 14»
6
More dead ends and detours en route to successful total synthesis
A wide range of topics is covered – from metal-mediated reactions, through pericyclic processes, to classical reactivity and protecting group ... «Chemistry World, 十月 13»
7
Flueggine A
Adding their remaining (–)-norsecurine (an equally potent dipolarophile) and tickling with a little heat prompted the pericyclic reaction – forming ... «Chemistry World, 一月 13»
8
Diels-Alder Reaction
And who can forget the endiandric acids from the pericyclic chemistry unit in their graduate organic chemistry class? The unsaturated acid with ... «Chemical & Engineering News, 十一月 11»
9
Synthetic enzyme catalyses Diels-Alder reaction
The Diels-Alder reaction - diene and dienophile undergo a pericyclic [4 + 2] cycloaddition to form a chiral cyclohexene ring. The image also ... «Chemistry World, 七月 10»
10
Interview: Making logical connections
My own breakthrough came with an apparently senseless question asked by a student during an undergraduate lecture on pericyclic reactions. «Chemistry World, 四月 09»

参考文献
« EDUCALINGO. Pericyclic [在线]. 可用 <https://educalingo.com/zh/dic-en/pericyclic>. 五月 2024 ».
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