1) nucleophilic substitution
亲核取代
1.
Significantly enhanced reactivities of the nucleophilic substitution reactions induced by microwaves in ionic liquids;
离子液体作为微波吸收剂用于促进亲核取代反应
2.
Solvent's Influence on Nucleophilic Substitution Reaction's Rate;
溶剂对亲核取代反应速率的影响
3.
The nucleophilic substitution reaction of 2-aryloxyl-4-chloro pyrimidy with sodium allylalconol;
烯丙醇钠对2-芳氧基-4-氯嘧啶的亲核取代反应
2) nucleophilic reaction
亲核取代
1.
Polyether ether ketones are prepared by the nucleophilic reaction of hydroquinone with 4,4'-difluorodibenzophenone using diphenylsulfone as solvent in the presence of anhydrous K_2CO_3/Na_2CO_3;the effect of the reaction temperature on molecular weights is discussed.
采用付氏烷基化法,以氟苯、四氯化碳为原料,无水三氯化铝为催化剂,合成单体4,4’-二氟二苯甲酮;再以二苯砜为溶剂,在无水碳酸钾/碳酸钠的催化下,通过对苯二酚与4,4’-二氟二苯甲酮进行亲核取代反应,合成了聚醚醚酮(PEEK),并探讨了反应温度对相对分子质量的影响。
2.
Polyether ether ketones were prepared by the nucleophilic reaction of hydroquinone with 4,4'-difluorobenzophenone using diphenylsulfone solvents in the presence of anhydrous K_2CO_3/Na_2CO_3,of which inherent viscosity was 0.
以二苯砜为溶剂,在无水碳酸钾/碳酸钠的催化下,通过对苯二酚与4,4'-二氟二苯甲酮进行亲核取代反应,合成了特性黏度为0。
3.
Polyether ether ketone ketone was prepared by the nucleophilic reaction of hydroquinone with 1,4-bis (4-fluorbenzoyl)-benz.
以二苯砜为溶剂,在无水碳酸钾/碳酸钠的催化下,以P,P-BFB为单体与对苯二酚进行亲核取代反应合成了特性粘度为0。
3) nucleophilic sugar substitution
亲核糖取代
1.
The synthetic methods of C - glycosides including electrophilic substitutions, nucleophilic sugar substitutions, rearrangements and cycloadditions, transition metal catalysis, anomeric radicals reactions and sugar ring formations were briefly reviewed.
本文介绍了近几年来有关碳糖苷合成的最新进展,包括亲电取代、亲核糖取代、过渡金属催化、异头碳自由基反应、重排和环加成反应以及糖环形成反应等。
4) S_N2 nucleophilic substitution
S_N2亲核取代
5) nucleophilic substitution
亲核取代反应
1.
The nucleophilic substitution of potassium salts of dicarbonylimide 3a~3g with 2-chloro- 1-oxy-5-chloromethylpyridine prepared by oxidation of the nitrogen of 2-chloro-5-chloromethylpyridine gave seven new N-(2-chloro-l-oxy-5-pyridinemethyl)dicarbonylimides via conventional method and mi- crowave irradiation technique.
以二甲酰亚胺钾3a~3g与2-氯-5-氯甲基吡啶的N原子氧化后得到的2-氯-1-氧-5-氯甲基吡啶发生亲核取代反应,用传统和微波两种方法合成了7种未见文献报到的化合物N-(2-氯-1-氧-5-吡啶甲基)二甲酰亚胺类化合物4a~4g。
2.
By the nucleophilic substitution of S for Br on 3-bromo-1,3,4,5-tetrahydro-2-oxo-1H-benazepine, 32 derivatives of tetrahydro-2-oxo-1H-benazepine were synthesized.
以芳酰肼为原料,合成了一系列3-巯基-5-芳基-1,2,4-三唑、2-巯基-5-芳基-1,3,4-噁二唑和2-巯基-5-芳基-1,3,4-噻二唑,并通过硫原子对3-溴-2-氧代-苯并氮杂3-位上的亲核取代反应将杂环化合物引入了苯并氮杂的结构当中,合成了32个新的苯并氮杂杂环衍生物。
3.
With the help of phase transfer catalyst tetrabutylammonium iodide (TBAI), and by means of nucleophilic substitution, four types of Nchloroacetylsubstituted nitrogencontaining benzoheterocycles were introduced into pyrimidines by the formation of ether.
4种苯并含氮杂环化合物分别与氯乙酰氯反应,得到相应的N 氯乙酰取代的衍生物 在相转移催化剂四丁基碘化铵(TBAI)的作用下,经亲核取代反应,4种N 氯乙酰取代的苯并含氮杂环化合物通过醚键的形成被引入嘧啶结构。
6) Nucleophilic substitution reaction
亲核取代反应
1.
Aripiprazole in overall yield of 68% was synthesized from 2,3-dichloroaniline by a three-step nucleophilic substitution reaction in yield of 83%,91% and 90%,respectively.
以2,3-二氯苯胺为原料,经3步亲核取代反应合成了阿立哌唑。
2.
According to teaching practice, some factors such as polarization property of ambident nucleophiles, solvent effect, structure of nucleophilic acceptance body affecting ambident nucleophilic substitution reaction are discussed with the present achievements in teaching and scientific research both at home and abroad in this way.
结合国内外关于两可亲核取代反应的教学、科研成果,就两可亲核试剂的极化性(软硬性)、溶剂化效应、亲 核受体的结构等因素对两可亲核试剂发生亲核取代反应的影响及两可亲核试剂在亲核取代反应中的作用加以讨 论。
3.
The compound (C 16 H 14 O 4) 1,4-bis(o-benzenmethyl)-1,4-butyl dioxide has been synthesized by nucleophilic substitution reaction of Salicylaldehyde and 1,2-ethylene dioxide.
以 1 ,2 -二溴乙烷和水杨醛为原料 ,通过亲核取代反应 ,合成了 1 ,4 -二( 2 -邻苯甲醛基 ) - 1 ,4 -二氧乙烷 (C16H14 O4)。
补充资料:光化芳香亲核取代
分子式:
CAS号:
性质:芳烃在光照射下发生的亲核取代反应。例如:3,4-二甲氧基硝基苯在紫外光照射下与碱作用,生成3-位甲氧基被羟基取代的产物,光化学反应是激发态的反应,在激发态时,硝基的邻位和间位同对位相比带有较多的正电荷,而甲氧基的邻位和间位同对位相比则带有较多的负电荷,因而定位效应与热化学反应不同。可利用光化芳香亲核取代反应,制备由热化学难以得到的多取代基的芳烃。当然芳香亲核取代的定位规律是很复杂的,需进一步研究。
CAS号:
性质:芳烃在光照射下发生的亲核取代反应。例如:3,4-二甲氧基硝基苯在紫外光照射下与碱作用,生成3-位甲氧基被羟基取代的产物,光化学反应是激发态的反应,在激发态时,硝基的邻位和间位同对位相比带有较多的正电荷,而甲氧基的邻位和间位同对位相比则带有较多的负电荷,因而定位效应与热化学反应不同。可利用光化芳香亲核取代反应,制备由热化学难以得到的多取代基的芳烃。当然芳香亲核取代的定位规律是很复杂的,需进一步研究。
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