关环反应,cyclization英语短句,例句大全

关环反应,cyclization
1)cyclization[英][,saikli'zei??n][美][,sa?kl?'ze??n, ,s?kl?-]关环反应
1.The Improvement of the Cyclization Step in the Stepwise Synthesis of Calix[4]arenes;逐步法合成杯[4]芳烃关环反应的改进
2.?ethylbenzoyl)benzoic acid was synthesized by Fri edel-crafts acylation from phthalic anhydride and excess ethylbenzene in the pr esence of AlCl 3 and NMP,and higher yield of 2-ethylanthraqunione was prepared by cyclization from 2-(4′-ethylbenzoyl)benzoic acid with 20% fuming sulphuri c acid as catalyst.以邻苯二甲酸酐和过量乙苯为原料 ,在无水AlCl3 和NMP存在下 ,通过傅氏酰化反应制得 2 (4′ 乙基苯甲酰 )苯甲酸 ;再用 2 0 %的发烟硫酸进行催化关环反应 ,合成了较高产率的2 乙基蒽醌 ,考察了溶剂体系、反应时间和温度对酰化反应的影响 ,并用IR、NMR等方法证实了其结构。

英文短句/例句

1.Tandem Ring-Opening/Closing Reactions of N-Ts Aziridines and Aryl Propargyl Alcohols氮杂环丙烷和芳基炔丙醇的串联开环关环反应
2.Amine-Mediated Ring-Opening and Ring-Closure Reaction of EWG-Activated 2-Methylene-1,3-dithioles;胺媒介的α-羰基二噻烯的开环—关环反应研究
3.Exploration of the Relationship between the Expression of Toll Like Receptor Four and Inflammation during Cardiopulmonary Bypass;TLR4的表达与体外循环术后炎症反应关系的探讨
4.The Study of Relationship between Nuclear Transcription Factor-κB and Inflammatory Response to Cardiopulmonary Bypass;核因子-κB与体外循环全身炎症反应关系的研究
5.Review of Carbonyl Alkylation Reactions of Lactams关于环状内酰胺羰基烷基化的反应综述
6.A Brief Discussion On The Key Steps of Anti-corruption Propaganda Education In Colleges and Universities浅谈高校反腐倡廉宣传教育应把握的关键环节
7.primary circular reaction初期循环反应初期循环反应
8.A Relation Study on Corporate Environmental Responsibility Stress Environmental Management Responses and Performance;企业环境责任压力、环境管理反应策略与绩效关系研究
9.Organocatalytic Intramolecular Ring-Closing Alkylation and Palladium-Catalyzed Ring-Opening Thiocarbonylation有机催化的分子内关环烷基化反应和钯催化的开环硫羰基化反应研究
10.Investigation on hydrolysis of ethyl benzoate in the presence of cyclodextrin as microreactor环糊精微反应器中酯的水解反应研究
11.dose response relationships: The direct relationship Between a specific amount of environmental pollution and its environmental impact.投配-反应关系:指一定剂量的环境污染物与其对环境影响的直接关系。
12.open-cycle reactor system开式循环反应堆系统
13.dual cycle boiling water reactor system双循环沸水反应堆系统
14.plutonium recycle test reactor钚再循环试验反应堆
15.indirect cycle reactor system间接循环反应堆系统
16.direct-cycle boiling water reactor直接循环沸水反应堆
17.closed cycle gas cooled reactor闭路循环气冷反应堆
18.once through reactor燃料一次循环反应堆

相关短句/例句

Intra-molecular condensation分子内关环反应
3)ring-closing metathesis关环复分解反应
1.Methods:A new approach to total synthesis of (-)-lasubine Ⅱ was established from readily available starting materials,via the new synthetic sequence including the creation of stereogenic centers through two sequential highly stereoselective Roush allylborations,SN2 cyclization and ring-closing metathesis reactions for the construction of the lasubine′s quinolizidine skeleton.方法:从简便易得的原料,通过两次高立体选择性的Roush硼烯丙基化反应以及SN2环合的方法构建3个手性中心,并利用关环复分解反应完成喹诺里西啶类生物碱(-)-lasubineⅡ的骨架构建。
2.A new synthetic strategy employing 1,3-diene-ene ring-closing metathesis (RCM) is proposed for formation of the 16-membered macrolactone in this thesis work.Bafilomyin A_1和MicromonospolideB的大环内酯部分结构相同,本工作提出了利用1,3-二烯-烯关环复分解反应来合成目标分子中16-元环内酯的新合成策略。
4)olefin cyclization成烯关环反应
1.The methods including photochemistry,Diels-Alder reaction,olefin cyclization,organotransition metal catalyzed [2+2+2] cycloisomerization and so on were discussed.综述了螺烯的制备方法方面的进展,述及的螺烯制备方法包括光化学反应、Diels-Alder反应、成烯关环反应以及过渡金属催化三炔的[2+2+2]环化异构化反应等。
5)tandem cyclizaiton串联关环反应
6)key reaction关键反应
1.Based on the principle of chemometrics, the key reactions of the reaction system were analyzed and defined as the reaction between NDA and BTC to form NDI, the reaction between NDA and HCl to fo.根据化学计量学原理确定了反应体系的关键反应为 NDA 与 BTC 合成 NDI 的反应, NDA与 HCl 生成 NDA盐酸盐的反应, NDA 和 NDI 生成脲的反应。