英语人>网络例句>烯基 相关的搜索结果
网络例句

烯基

与 烯基 相关的网络例句 [注:此内容来源于网络,仅供参考]

The reaction takes place as soon as 3a is dissolved in solution. With the presence of a tethering terminal vinyl group bound to the vinylidene ligand, the [2+2] cycloaddition of two C=C double bonds readily occurred.

当有一乙烯基键结在丙二烯基上,分子内的两个碳碳双键会马上发生[2+2]的环化加成反应。

The presence of a gem-diphenylmethylene moiety at the vinylidene ligand with the appropriate terminal vinyl or alkynyl group along with the proper steric environment implements such a novel reactivity in the ruthenium vinylidene complexes.

因此推测丙二烯基与末端的不饱和键确实可以进行一些分子内的反应,但是gem-diphenylmethylene 官能基需位於适当的立体位置方可进行。

Pyrazolyl alkenyl Fischer carbene complexes have both the virtues of multiple reactivity in carbene fragment and high bioactivity in pyrazole fragment, which attracts our interest in their synthesis and application from a theoretical and applied viewpoint.

吡唑基烯基卡宾化合物同时具有高反应活性的卡宾基团和高生物活性的吡唑基团,因而其反应研究具有一定的理论意义和应用价值。

Provided are a variety of monomers suitable of producing photosensitive polymers, that are in turn, useful in photoresist compositions, through radical polymerization including at least one multi-ring alkenyl ethers and one alpha-fluorinated acrylate.

本发明提供多种单体,所述单体适用于通过包括至少一种多环烯基醚和一种α-氟化丙烯酸酯的自由基聚合制造光敏聚合物,所述光敏聚合物又可用于光致抗蚀剂组合物中。

1A series ofω-alkylmercapo acid were synthesized by two methods:one involved the reaction of the appropriateω-bromoalkyl acid with mercaptide under the presence of base;the other method was used only for the long alkyl compound by the reaction ofω-alkenyl acid and alkanethiol in the presence of AIBN.

正是基于以上考虑,本论文探索了合成下沿带有硫醚官能团,而上沿带有偶氮官能团的杯[4]芳烃衍生物的方法,进行了以下研究: 1采用ω-溴代羧酸和烃基硫醇在碱性条件下发生反应,或由ω-烯基羧酸和硫醇在AIBN的存在下反应,得到了ω-硫醚羧酸,使用氯化亚砜将羧酸转化为酰氯。

Amino-2-methylpropanol was used as the chemical modifying reagent of fatty acids to modify the carboxyl group into nitrogen-containing heterocycle which would effectively prevent the migration of carbon double bonds of the alkenyl in the electron impact source.

以2-氨基-2-甲基-丙醇为脂肪酸的化学修饰试剂,气相色谱-电子轰击质谱分析葵子油脂肪酸。2-氨基-2-甲基-丙醇将脂肪酸羧基修改为含氮杂环,使在EI源中避免了链烯基中碳碳双键的移动。

Understand the mechnism of aromatic electrophilic substitution reactions and the characteristics of the benzonium ion; grasp halogenation, nitration, sulfonation, Friedel-Crafts alkylation and acylation reactions; understand the effect of substituents on reactivity and orientation; know the side-chain reactions of alkylbenzenes and alkenyl benzenes; be familiar with the synthetic methods and application of derivatives of benzene.

了解苯环亲电取代反应机理及苯正离子的特性;掌握苯环卤化、硝化、磺化、Friedel-Crafts 烷基化和酰基化反应及取代效应;了解烷基苯、烯基苯的支链反应和苯衍生物的合成应用。

The present invention relates to sulphonyloxazolamines of general formula, wherein R, R represent independently from each other H, A,-(CH2)n-Ar or alkenyl with 2-6 C atoms, R and R together also represent a mononuclear saturated heterocycle with 1-2 N, O and/or S atoms, Z is H, A, CF3, NO2, Hal, OH, OA, NH2, NHA or NA2, A represents alkyl with 1-6 C atoms, Ar is Z-monosubstituted or Z-disubstituted phenyl, halogen is F, Cl, Br or I, n is 1 or 2 or the physiologically acceptable salts or solvates thereof.

本发明涉及式磺酰基∴唑胺或其生理上可接受的盐或溶剂化物,其中R 1 ,R 2 每一个相互独立为H、A、-(CH 2 )n-Ar或具有2到6个C原子的链烯基,R 1 和R 2 也一起为具有1到2个N、O和/或S原子的单核饱和杂环,Z为H、A、CF 3 、NO 2 、卤素、OH、OA、NH 2 。NHA或NA 2 ,A为具有1到6个C原子的烷基,Ar为被Z取代的或Z二-取代的苯基,卤素为F、Cl、Br或I,n为1或2。

This paper contains three parts: 1 Synthesis of novel titanium complexes; 2 Polymerization behaviors of alkoxyl substituted Cp Titanocenes as catalysts for styrene syndiotactic polymerization; 3 Polymerization behaviors of alkenyl substituted Cp Lanthanocenes as Methyl Methacrylate polymerization catalysts.

中文题名新型茂钛、噁唑啉钛络合物的合成、表征以及茂钛、茂稀土络合物催化性能的研究副题名外文题名 Synthesis,characterization of novel Cp,oxazoline titanium complexes and polymerization behaviors of titanocenes and lanthanocenes 论文作者张浩导师钱延龙黄吉玲学科专业应用化学研究领域\研究方向金属有机与均相催化学位级别博士学位授予单位华东理工大学学位授予日期2003 论文页码总数148页关键词金属有机化学稀土络合物噁唑啉类钛络合物茂钛络合物馆藏号BSLW /2003 /O627 /27 本论文包括三部分内容:1)有机金属钛络合物的合成;2)烷氧基取代茂钛络合物催化苯乙烯间规聚合的研究;3)烯基取代茂稀土络合物催化甲基丙烯酸甲酯聚合的研究。

A conjugate addition of alkadienyl carbonyl compound with vinyl palladium intermediates which can be formed from oxypalladation of alkynes or allenes was studied, and 1, 6-addition products were obtained.

发现不饱和烃的分子内氧钯化得到的烯基钯中间体能够与不饱和共轭双烯的醛酮反应,选择性的得到1,6-加成产物。

第8/84页 首页 < ... 4 5 6 7 8 9 10 11 12 ... > 尾页
推荐网络例句

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称;三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起,称之为挽歌体诗人或者史诗诗人,他们被称为诗人,似乎只是因为遵守格律写作,而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。

This is not paper type of business,it's people business,with such huge money involved.

这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。