助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   芳基碘 的翻译结果: 查询用时:0.04秒
图标索引 在分类学科中查询
所有学科
化学
有机化工
更多类别查询

图标索引 历史查询
 

芳基碘    
相关语句
  aryl iodides
    Palladium——catalyzed arylation of butyl acrylate with aryl iodides in water
    钯催化丙烯酸丁酯与芳基碘在水相中的芳基化反应
短句来源
    Palladium-catalyzed arylation of acrylamide with aryl iodides in water
    钯催化丙烯酰胺与芳基碘在水相中的芳基化反应
短句来源
    Silica-supported Arsine Palladium(0) Complex Catalyzed Phenylation of Acid Chlorides and Aryl Iodides by Sodium Tetraphenylborate
    二氧化硅负载胂钯(0)配合物催化酰氯和芳基碘与四苯硼化钠的苯基化反应
短句来源
    It was found that this palladium(0) complex has not only high activity and stereoselectivity for arylation reaction of conjugated alkenes with aryl iodides and activated aryl bromides, but also can efficiently catalyze the Sonogashira coupling and the Suzuki coupling reactions.
    研究发现制备的巯基钯(0)配合物不仅对芳基碘与共轭烯烃的Heck偶联反应具有很高的催化活性,还能有效催化含吸电子取代基的芳基溴与共轭烯烃的Heck偶联反应。 该巯基钯(0)配合物还能有效催化Sonogashira偶联反应和Suzuki偶联反应。
短句来源
    We have also found that (Z)-a-silylvinyl Grignard reagents can react with trialkyl stannyl chlorides to give (E)-a-silylvinylstannanes in good yields. Another method for preparing (Z)-l,2-disubstituted vinylsilanes has been provided by (Z)-a-silylvinyl-stannanes reacting with aryl iodides in the presence of Pd(PPh3)4 and CuI.
    研究了(Z)-α-硅基烯基GrignaLrd试剂与三烷基氯化锡的反应,提供了立体选择合成(E)-α-硅基烯基锡烷的新方法:(E)-α-硅基烯基锡烷在Pd(PPh_3)_4和CuI的催化下与芳基碘反应,这为立体选择合成(Z)-1,2-双取代烯基硅烷提供了又一新途径。
短句来源
  aryl iodides
    Palladium——catalyzed arylation of butyl acrylate with aryl iodides in water
    钯催化丙烯酸丁酯与芳基碘在水相中的芳基化反应
短句来源
    Palladium-catalyzed arylation of acrylamide with aryl iodides in water
    钯催化丙烯酰胺与芳基碘在水相中的芳基化反应
短句来源
    Silica-supported Arsine Palladium(0) Complex Catalyzed Phenylation of Acid Chlorides and Aryl Iodides by Sodium Tetraphenylborate
    二氧化硅负载胂钯(0)配合物催化酰氯和芳基碘与四苯硼化钠的苯基化反应
短句来源
    It was found that this palladium(0) complex has not only high activity and stereoselectivity for arylation reaction of conjugated alkenes with aryl iodides and activated aryl bromides, but also can efficiently catalyze the Sonogashira coupling and the Suzuki coupling reactions.
    研究发现制备的巯基钯(0)配合物不仅对芳基碘与共轭烯烃的Heck偶联反应具有很高的催化活性,还能有效催化含吸电子取代基的芳基溴与共轭烯烃的Heck偶联反应。 该巯基钯(0)配合物还能有效催化Sonogashira偶联反应和Suzuki偶联反应。
短句来源
    We have also found that (Z)-a-silylvinyl Grignard reagents can react with trialkyl stannyl chlorides to give (E)-a-silylvinylstannanes in good yields. Another method for preparing (Z)-l,2-disubstituted vinylsilanes has been provided by (Z)-a-silylvinyl-stannanes reacting with aryl iodides in the presence of Pd(PPh3)4 and CuI.
    研究了(Z)-α-硅基烯基GrignaLrd试剂与三烷基氯化锡的反应,提供了立体选择合成(E)-α-硅基烯基锡烷的新方法:(E)-α-硅基烯基锡烷在Pd(PPh_3)_4和CuI的催化下与芳基碘反应,这为立体选择合成(Z)-1,2-双取代烯基硅烷提供了又一新途径。
短句来源
查询“芳基碘”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  aryl iodides
Heck reactions of alkenes with aryl iodides and aryl bromides: Rate-determining steps deduced from a comparative kinetic study o
      
Applying this approach to the Heck reaction has demonstrated that alkenes; reactive aryl iodides; and, contrary to the conventional opinion, unactivated aryl bromides participate in rapid steps of the Heck reaction.
      
For aryl iodides, the rate-determining step includes the dissociation of a C-H bond.
      
Tributyltin aryl selenides are highly efficient arylselenating agents in reactions with aryl iodides and aryl triflates under catalysis with Pd and Ni complexes respectively.
      
The arylation of the title compound with aryl iodides containing both electron-acceptor and electron-donor substituents was effected under catalysis by palladium or nickel complexes.
      
更多          


Seven aromatic iodonium and sulfonium salts,with hexafluoroantimonate and hexafluorophosphate as anions,were synthesized.The activity in initiating the bulk photolymerization of glycidyl methacrylate was examined.Bis-[4-(diphenyls- ulfonio)phenyl]-sulfide-bis-hexafluorophosphate was found to be the most effec- tive photoinitiator.The concentration of active centers([P~*])in cyclohexene oxide polymerization was determined by using sodium phenoxide as terminating agent. It was found that[P~*]increased linearly...

Seven aromatic iodonium and sulfonium salts,with hexafluoroantimonate and hexafluorophosphate as anions,were synthesized.The activity in initiating the bulk photolymerization of glycidyl methacrylate was examined.Bis-[4-(diphenyls- ulfonio)phenyl]-sulfide-bis-hexafluorophosphate was found to be the most effec- tive photoinitiator.The concentration of active centers([P~*])in cyclohexene oxide polymerization was determined by using sodium phenoxide as terminating agent. It was found that[P~*]increased linearly during the early stage of polymerization; at the same monomer conversion,the[p~*]in solution polymerization was higher than that in bulk polymerization,indicating possible involvement of solvent(1, 2- dichloroethane)in the initiation step.

合成了7种具有不同阳离子结构和不同配阴离子的芳基碘、硫(钅翁)盐,并测定了它们的光谱特征。其中以双[4-(二苯锍基)苯基]硫(钅翁)盐(BDS)在甲基丙烯酸缩水甘油酯光聚合中的引发活性最高。用苯酚钠终止氧化环已烯光聚合中的活性中心,从而测得活性中心浓度,发现至少在低转化率(10%)以内,活性中心浓度随聚合时间而线性增加;在相同转化率时,溶液聚合的活性中心浓度高于本体聚合者,表明溶剂可能参与引发作用。

Triarylsulfonium Salts and diaryiodonium salts are photoinitiator for cationic polymerization as well as photo- acid generator. However, they exhibit low absorptivity above 300 nm, which limits the efficiency of light use for common UV sources. In order to overcome this limitation, a number of novel iodonium salts and sulfonium salts were prepared and their photoactivity for cationic polymerization were investigated by gel time studies. The results indicated that 2- phenylsulfur- methyl, 2',4'- dimethyl diphenyl...

Triarylsulfonium Salts and diaryiodonium salts are photoinitiator for cationic polymerization as well as photo- acid generator. However, they exhibit low absorptivity above 300 nm, which limits the efficiency of light use for common UV sources. In order to overcome this limitation, a number of novel iodonium salts and sulfonium salts were prepared and their photoactivity for cationic polymerization were investigated by gel time studies. The results indicated that 2- phenylsulfur- methyl, 2',4'- dimethyl diphenyl iodonium salts and 9- anthryl- propyl, diphenyl sulfonium salts, which possess built- in sensitizer, show very high photoactivity. An intramolecular electron transfer mechanism has been proposed to explain this result. Thus, the anthryl group(An) is an electron donor and a built- in sensitizer group on the molecule of 9- anthryl- propyl, diphenyl sulfonium salts, and the photoreaction can be shown as following:

芳基碘鎓盐和三芳基硫鎓盐是阳离子聚合的光引发剂和光敏产酸物,但他们在300nm以上的光吸收很低,限制了对紫外光的利用效率。为解决此问题,本文合成了一些新的碘鎓盐和硫鎓盐,并用凝胶时间方法考察了它们的光引发效率。实验结果表明,2-苯硫基甲基,2′,4′-二甲基二苯碘鎓盐和9-蒽丙基,二苯基硫鎓盐具有特别高的光引发效率,这归之于光照时这些鎓盐发生了分子内电荷转移反应,即发生了分子内敏化。9-蒽丙基二苯硫鎓盐分子中的蒽基(An)是电子给体也是敏化基团,光照时可发生如下反应:

Two different kinds of eledron donating ammes AH- Ⅰ and AH- Ⅱ in combination with electron accepting diaryliodonium salts were used as a new type of photoinitiation system for radical polymerization sensitive to visible light.The AH-- Ⅰ ammes, such as aliphatic and aromatic ammes, can only absorb light below 300--400 urn by themselves, but readily interact with iodonium salts to form a charge transfer complex (CTC), which extends the absorption largely into the visible range. The AH--Ⅱ amines, such as N--substituted...

Two different kinds of eledron donating ammes AH- Ⅰ and AH- Ⅱ in combination with electron accepting diaryliodonium salts were used as a new type of photoinitiation system for radical polymerization sensitive to visible light.The AH-- Ⅰ ammes, such as aliphatic and aromatic ammes, can only absorb light below 300--400 urn by themselves, but readily interact with iodonium salts to form a charge transfer complex (CTC), which extends the absorption largely into the visible range. The AH--Ⅱ amines, such as N--substituted derivatives of chalcone, coumarin ketone and styryl ketone, et al have a long conjugated structure and exhibit large absorbability in the visible range. These systems are stable in the bark. but rapidly undergo electron transfer reaction upon irradiation with visible light to generate initiating radicals. Both AH--Ⅰ/DPIO and AH-- Ⅱ /DPIO systems can efficiently induce photopolymerization of acrylates, acrylonitrile and styrene, etc. The photopolymerization rates and related kinetic equations for several systems were studied.

应用于可见光聚合的新型光敏化引发体系,是由二类不同的具有给电子作用的胺AH-Ⅰ、AH-Ⅱ和受电子作用的二芳基碘盐(DPIO)复合组成。AH-Ⅰ类胺,如脂肪族胶和芳香族胺的光吸收在300—400no以下,很容易和碘盐作用形成电荷转移络合物(CTC),使光吸收显著移至可见光区。AH-Ⅱ类胺如N~取代的查耳酮、吗啉酮和芪酮等衍生物,具有很大的共轭结构,并且在可见光区有很高的吸收能力,这些体系在暗处很稳定,然而在可见光作用下,很快发生电子转移反应,生成具有引发活性的自由基。AH-Ⅰ/DPIO和AH-Ⅱ/DPIO体系皆能有效地引发丙烯酸酯、丙烯腈和苯乙烯等光聚合。研究了几种体系的光聚合反应速度和相关的动力学方程。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关芳基碘的内容
在知识搜索中查有关芳基碘的内容
在数字搜索中查有关芳基碘的内容
在概念知识元中查有关芳基碘的内容
在学术趋势中查有关芳基碘的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社