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
   substitution product 的翻译结果: 查询用时:0.008秒
图标索引 在分类学科中查询
所有学科
更多类别查询

图标索引 历史查询
 

substitution product
相关语句
  取代产物
     3. Under the catalysis of bases, the product of twice Knoevenagel condensation of acenaphthalenequinone and malononitrile had undergone further O2-oxidative SNArH reaction with the hydroxy ion released by the condensation, and resulted in dark-blue substitution product;
     3.应用苊醌与丙二腈在碱性条件下进行两次Knoevenagel Condensation反应,生成的两次缩合产物与缩合反应释放的羟基负离子发生O_2-oxidative S_NAr~H反应,得到了深蓝色取代产物
短句来源
     Predominant β-scission of (PHCH2COPi)-follwed by dimerization of benzyl radical gave 1,2-diphenylethane as the major product. Residence of the odd electron of (ArNu)-at the polycylic aryl moiety resulted in the electron to transfer ground ArX and formation of the nucleophilic substitution product.
     β-裂解和苄基游离基二聚形成的1,2-二苯乙烷成为主要产物(ArNu)奇电子优先分布在稠环部分的奇电子转移给基态的ArX,从而生成亲核取代产物.
短句来源
  “substitution product”译为未确定词的双语例句
     In the reaction of Ⅲ with bromine there was formed, besides 1,2,3, 4-tetrabromo-2,3-dimethylbutane,a substitution product "tetrabromide",probably tetrabromomethylethylene (Ⅴ).
     2.Ⅲ在与溴作用时,除形成1,2,3,4-四溴代-2,3-二甲基丁烷(Ⅵ)外,还导致形成一个新的“四溴化物”,可能为四溴甲基乙烯(Ⅴ)。
短句来源
     Innovation in product of investment fund breedingsome purposes and deep background connects close with the changes of economic and financial environment and market demand, which has also a close relationship with epoch, investors' preferences, degree of perfection and openness, substitution product of financial investment and innovation in financial instrument continuously emerging in international markeSu.
     公司型投资基金通过引入现代的公司治理形式来处理与投资基金相关各方的关系,并在_内部采取公司形式的组织构造,如董事会、监事会以及必要的外部独立董事和报酬委员会等,来对基金进行正常和有效的运作,有助于投资人的利益保护。 但是公司型治理正常功能的发挥也需要外部环境支持,从而形成对公司管理层的约束机制。
短句来源
     The second chapter analyzed the industry competition structure which SINA. com locates from five aspects of latent entering threat, the existing competitor, the substitution product threat, the buyer straightforward price ability and the seller straightforward price ability five aspects, based on Porter’s "five forces models".
     第二章依据波特的“五力模型”从潜在进入者的威胁、现有竞争者间的争夺、替代产品的威胁、买方侃价能力和卖方侃价能力五个方面分析了新浪所在的门户网站行业的竞争结构。
短句来源
     Afterwads, CMS production will develop in the direction of high viscosity and high substitution product. 
     今后CMS的开发应向高粘度、高取代度产品的方向发展,同时,利用醚化与酸解、辐射降解、接枝、交联等改性方法相结合,即所谓的复合改性,将是开发羧甲基淀粉的新途径。
短句来源
     Based on an analysis of consumers' behavior in employing the partial total substitution product,and by introducing and accepting the concepts like diffusion and a series of new parameters,the diffusion and recognition model of non-(substitution) products under the assumed conditions and the diffusion model of known partial total substitution products are proposed.
     在分析消费者对部分完全替代新产品采用行为的基础上,通过引入认同扩散等概念和一系列新的参数,在一定假设条件下提出了非替代市场产品认同扩散模型和在明晰市场中部分完全替代创新产品的扩散模型。
短句来源
更多       
  相似匹配句对
     PRODUCT
     产品推荐
短句来源
     The Economic Analysis of Irreversible Product Substitution
     不可逆产品替代的经济学分析
短句来源
     The main product of substitution nuclephilic of cyclopropane halide is not
     卤代环丙烷亲核取代反应的主要产物不是环丙烷衍生物,而是丙稀类衍生物。
短句来源
     Product News
     新产品
短句来源
     ②substitution;
     2、替换法 ;
短句来源
查询“substitution product”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。
  substitution product
Reactions of F2NC(NO2)3 with metal fluorides (KF and CsF) in DMF yield a substitution product of the fluorine atom for one nitro group, F2NC(NO2)2F.
      
The cis-trans isomers of the "vinylic" fluorine substitution product were isolated and characterized when Na[η5-C5H5Fe(CO)2] is reacted with ethyl perfluoromethacrylate.
      
Compound 1 reacts with dppm (dppm=bis(diphenyl- phosphino)methane) and [Co2(CO)8] to form the more stable substitution product [Co2(CO)4{μ-P(TMP)}(μ-dppm)] (3) and [Co4(CO)7(μ-CO)3{μ3-P(TMP)}] (4) respectively.
      
Both starting clusters react rapidly with dmpe at room temperature to give the corresponding substitution product Os3(CO)10(dmpe) (3), whose isomeric composition is shown to depend on the nature of the starting cluster.
      
Compound 1 reacted with PPh3 at 98°C to give the substitution product 4 which is an isomer of 3.
      
更多          


In the presence of benzoyl peroxide 2, 3-dimethylbutene-2 reacted readily with N-bromosuccinimide giving mainly substitution products.When a 1:1 molar ratio of the olefin and the brominating agent was used, the Products consisted of 1-bromo-2,3-dimethylbutene-2 (Ⅰ)(58%),2,3-dibromo-2,3-dimethylbutane(Ⅱ)(2%),and a mixture of cis-and trans-1,4 dibromo-2,3-dimethylbutene-2(Ⅲ)(23%). When a 1:2 molar ratio of the olefin and the brominating agent was used, the products consisted of Ⅰ(1%),Ⅲ(66%) and...

In the presence of benzoyl peroxide 2, 3-dimethylbutene-2 reacted readily with N-bromosuccinimide giving mainly substitution products.When a 1:1 molar ratio of the olefin and the brominating agent was used, the Products consisted of 1-bromo-2,3-dimethylbutene-2 (Ⅰ)(58%),2,3-dibromo-2,3-dimethylbutane(Ⅱ)(2%),and a mixture of cis-and trans-1,4 dibromo-2,3-dimethylbutene-2(Ⅲ)(23%). When a 1:2 molar ratio of the olefin and the brominating agent was used, the products consisted of Ⅰ(1%),Ⅲ(66%) and a "tribromide",probably 1,4-dibromo-2-methyl-3-bromomethylbutene-2(Ⅸ). In the reaction of Ⅲ with bromine there was formed, besides 1,2,3, 4-tetrabromo-2,3-dimethylbutane,a substitution product "tetrabromide",probably tetrabromomethylethylene (Ⅴ). V is a new compound and its reaction products, Ⅵ,Ⅶ, Ⅷ, With trimethylamine, Pyridine and thiourea have been prepared. When 2,3-dimethylbutene-2 wastreated with 4 moles of N-bromosuc cinimide in the presence of benzoyl peroxide, V could be obtained directly in 47% yield. V was also obtained in 70% yield when Ⅲ was treated with 2 moles of N-bromosuccinimide under the same conditions,No migration of the double bond was observed in all the bromination reactions. Benzoic acid was found among the reaction products when the bromination was carried out in the Presence of benzoyl Peroxide. When benzoyl peroxide was decomposed in 2,3-dimethylbutene-2, benzoic acid was also formed.A free-radical chain mechanism initiated by the abstraction of hydrogen atom from the ∝-methyl group of the olefin by C_6H_5COO·is suggested for the bromination reaction.

1.在苯甲酰过氧化物存在下,2,3-二甲基丁烯-2容易与N-溴代丁二酰亚胺起反应,主要形成取代产物。当烯烴与溴化剂的用量为1:1克分子比例时,反应产物为1-溴代-2,3-二甲基丁烯-2(Ⅰ)(58%),2,3-二溴代-2,3-二甲基丁烷(Ⅱ)(2%)及順式-与反式-1,4-二溴代-2,3-二甲基丁烯-2(Ⅲ)的混合物(23%)。当烯烴与溴化剂的用量为1:2克分子比例时,反应产物为Ⅰ(1%),Ⅲ(66%)及一“三溴化物”,可能为1,4-二溴代-2-甲基-3-溴甲基丁烯-2(Ⅸ)(23%)。 2.Ⅲ在与溴作用时,除形成1,2,3,4-四溴代-2,3-二甲基丁烷(Ⅵ)外,还导致形成一个新的“四溴化物”,可能为四溴甲基乙烯(Ⅴ)。Ⅴ为一个新的化合物,它与三甲胺,吡啶,硫脲作用所形成的衍生物(Ⅵ),(Ⅶ),(Ⅷ)亦經制备。 3.2.3-二甲基丁烯-2与四倍克分子N-溴代丁二酰亚胺在苯甲酰过氧化物存在下作用时可直接得到Ⅴ,产率47%。Ⅲ(反式異构体)与二倍克分子N-溴代丁二酰亚胺在同样条件下作用时亦得到Ⅴ,产率70%。在上述的溴化反应中,都没有观察到有双键的移位作用发生。 4.从苯甲酰过氧化物引发的溴化反应产物中,曾經分...

1.在苯甲酰过氧化物存在下,2,3-二甲基丁烯-2容易与N-溴代丁二酰亚胺起反应,主要形成取代产物。当烯烴与溴化剂的用量为1:1克分子比例时,反应产物为1-溴代-2,3-二甲基丁烯-2(Ⅰ)(58%),2,3-二溴代-2,3-二甲基丁烷(Ⅱ)(2%)及順式-与反式-1,4-二溴代-2,3-二甲基丁烯-2(Ⅲ)的混合物(23%)。当烯烴与溴化剂的用量为1:2克分子比例时,反应产物为Ⅰ(1%),Ⅲ(66%)及一“三溴化物”,可能为1,4-二溴代-2-甲基-3-溴甲基丁烯-2(Ⅸ)(23%)。 2.Ⅲ在与溴作用时,除形成1,2,3,4-四溴代-2,3-二甲基丁烷(Ⅵ)外,还导致形成一个新的“四溴化物”,可能为四溴甲基乙烯(Ⅴ)。Ⅴ为一个新的化合物,它与三甲胺,吡啶,硫脲作用所形成的衍生物(Ⅵ),(Ⅶ),(Ⅷ)亦經制备。 3.2.3-二甲基丁烯-2与四倍克分子N-溴代丁二酰亚胺在苯甲酰过氧化物存在下作用时可直接得到Ⅴ,产率47%。Ⅲ(反式異构体)与二倍克分子N-溴代丁二酰亚胺在同样条件下作用时亦得到Ⅴ,产率70%。在上述的溴化反应中,都没有观察到有双键的移位作用发生。 4.从苯甲酰过氧化物引发的溴化反应产物中,曾經分离出苯甲酸,苯甲酰过氧化物在2,3-二甲基丁烯-2中分解时,亦有苯甲酸形成。根据这些結果,作者提出由C_6H_5COO·夺取烯烴分子中∝-甲基上的氫原子所引发的溴化反应的鏈式历程。本文中所报告的臭氧分解实驗系在中国科学院应用化学研究所进行的,作者謹表謝意。碳氫分析及一部分氮、溴的分析系請中国科学院有机化学研究所代做,一部分氮、溴的分析系由本系赵尊同志所做,均此致謝。

The quantum chemistry model of SN2' reaction transition state is suggested by this paper. It is pointed out that the delocalized scope of SN2' reaction transition state involves three carbon cores, an attacking atom of the nucleophile, and a leaving group, five cores in all. It is inferred by using HMO method and some approximate treatment that the secular determinant of the MO of SN2' reaction transition state is similar to the secular determinant of Huckel or Mobius annulene of five carbon atoms. Its delocalized...

The quantum chemistry model of SN2' reaction transition state is suggested by this paper. It is pointed out that the delocalized scope of SN2' reaction transition state involves three carbon cores, an attacking atom of the nucleophile, and a leaving group, five cores in all. It is inferred by using HMO method and some approximate treatment that the secular determinant of the MO of SN2' reaction transition state is similar to the secular determinant of Huckel or Mobius annulene of five carbon atoms. Its delocalized electron population should be four plus effectual lone-pair electron population. If attacking atoms of the nucleophile are N, O, Cl, etc., their effectual lone-pair electron population is nearly 2. In this case, Huckee ring will be at lower energy levels,and SN2' reaction will take place by cis-substitution, If attacking atoms of the nucleophile are C, and S, etc., their effecthal lone-pair electron population is much less than 2, and it may be nearly 1. At that time, Huckel and Mobius ring will have almost equal energy and cis- and trans-substitution products will be in proportion. Sometimes, the major product is transsubstitution ones.The quantum chemistry model and its relative molecular graph suggested here are topologically equivalent to actual reaction molecule. In the light of Hammond postulate, it is comparatively reasonable and nearly true, and therefore, the stereochemistry specificity and actual experimental results of SN2' reaction are explained comparatively satisfactorily in this way. Finally, SB2' reaction transition state is dealt with in the same way, and its stereochemistry is presumed,

本文提出了S_N2′反应过渡态的量子化学模型,指出S_N2′反应过渡态离域区由三个碳原子实、亲核试剂的进攻原子及亲去基团共五个原子实组成.运用HMO法和近似处理证明其分子轨道的久期行列式与五碳环的Hückel和Móbius轮烯的久期行列式完全相似.离域电子效应为4加有效孤对电子.如果亲核试剂直接起进攻作用的原子是N.O.Cl等,有效弧对电子接近于2个电子,此时Hückel环有较低能量,S_N2′反应按顺式取代.如果亲核试剂直接起进攻作用的原子是C.S等,有效孤对电子远小于2个电子,约为1左右,此时Hückel环和Móbius环能量接近,顺反两种取代产物占一定比例,有时是以反式产物为主.本文提出的量子化学模型及相应的分子图与反应物实体是拓朴等价的.按照Hammond假说,它是较为合理的也是接近真实的,因而较园满地解释了S_N2′反应的立体化学选择性和实验事实,最后对S_E2′反应过渡态作了类似的处理和立体化学推测.

After first report of diseovoring pseudomorphous octahedra of serpentine in 1981 pseudomor-phous octahedra of chrom-bearing chlorite also has been diseovered in chiomite of the same ultra-mafic rooks. Chlorite is the substitution product of serpentine. Based on reseach results we can makefollowing conclutions: 1. the plimary mineral of octahedral pseudomorphous Chlorite must bo γ-olivine. The pressure of formation of γ-olivine was about 140kb, corresponds to 500km in depth;2.Al, Cr of pseudomorphous octahedra...

After first report of diseovoring pseudomorphous octahedra of serpentine in 1981 pseudomor-phous octahedra of chrom-bearing chlorite also has been diseovered in chiomite of the same ultra-mafic rooks. Chlorite is the substitution product of serpentine. Based on reseach results we can makefollowing conclutions: 1. the plimary mineral of octahedral pseudomorphous Chlorite must bo γ-olivine. The pressure of formation of γ-olivine was about 140kb, corresponds to 500km in depth;2.Al, Cr of pseudomorphous octahedra must come from chromite; 3. Chromite including pseudomo-rphous octahedra of serpentine and chlorite, may be a trpe of directlg coming from lower Part ofmantle; 4.North Tibet ultramafic rock belt would be formed deeper than that in South Tibetbelt, because pseudomorphous octahedra are found only in North Tibet ultramafic rock belt.

继1981年首次报导八面体假象蛇纹石之后,在同一超镁铁岩中又发现了一些八面体假象含铬绿泥石,后者是交代前者的产物。通过研究我们认为:1)八面体假象绿泥石中的Al、Cr等元素来自铬铁矿石;2)和八面体假象蛇纹石一样,八面体假象绿泥石的最初原生矿物也应为γ一橄榄石,后者的形成压力为140×10~8Pa(140Kb),相当于500公里的深度;3)包有八面体假象蛇纹石和绿泥石的铬铁矿可能是一种直接来自深部地慢的铬铁矿类型;4)藏北岩带的两处(安多和阿里地区)超镁铁岩中出现八面体假象矿物说明藏北超镁铁岩带(或岩带的几处超镁铁岩)形成的构造环境可能深于藏南超镁铁岩带。

 
<< 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substitution product的内容
在知识搜索中查有关substitution product的内容
在数字搜索中查有关substitution product的内容
在概念知识元中查有关substitution product的内容
在学术趋势中查有关substitution product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