烯化
- 与 烯化 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
The experimental results showed that the catalyst had better catalytic activity and selectivity. The main product of the isomerization reaction was camphene, and the byproducts were limonene, terpinolene and tricyclene etc.
该催化剂具有较好的催化活性和选择性,异构化反应的主产物是莰烯,副产物是苎烯、异松油烯、三环烯等。
-
A new method for synthesizing rosin allyl alcohol ester was studied. p-Toluenesulfonic acid allyl alcohol ester was first synthesized by O-acylation of allyl alcohol with p-toluene sulfonyl chloride, using NaOH as catalyst. Then rosin allyl alcohol ester was synthesized from sodium resinate and p-toluenesulfonic acid allyl alcohol ester.
探索了一种两步合成松香烯丙醇酯的新方法,即先以烯丙醇和时甲苯磺酰氯为原料,以NaOH为催化剂,通过O-酰化反应合成中间体对甲笨磺酸烯丙醇酯,再与松香钠皂发生亲核取代反应合成目标产物松香烯丙醇酯。
-
The key steps involved Friedel-Crafts reaction of o-cresol and the Wittig reaction for construction the skeleton of amine moiety,at the same time, using the synthesis of E,(7S)-7-methoxytetradec-4-enoic acid in chapter 2,and Johnson-Clainsen rearrangement as a key step for construction the fatty acid part,the corresponding acid was prepared in 23%and 50%overall yield,respectively.
随后将手性不饱和脂肪酸和氨片段进行酰胺化反应构筑了malyngamide M的基本骨架,再将Z-烯氯转化为E-烯氯完成了目标分子的全合成,高立体选择性地构筑了末端烯氯结构,为制备其它含有类似烯氯结构的malyngamides探索出行之有效的合成路线。
-
The allylation reactions of aldehydes with allyl bromide were carried out in 76%~93% yields with Nd-SnCl2-H2O under ultrasound irradiation at room temperature for 50~60 min.
在Nd-SnCl2-H2O体系中,用烯丙基溴超声诱发下进行了一系列芳香醛的烯丙基反应,室温反应50~60min得76%~93%烯丙基化产物;而不用超声波时同样体系中搅拌3~4h高烯丙基醇产率为30%~86%。
-
Grasp the electron delocolization theory; be capable of judging the relative stability of allylic and benzylic free radicals and carbocations, know the relative stability of dienes and other multiple unsaturated hydrocarbons; grasp the characteristics for the nucleophilic substitution reactions of allyl halides and benzyl halides, and the addition reactions of conjugate dienes.
掌握电子非定域化理论;能够分析判断烯丙基、苄基自由基和正离子的稳定性和二烯及多重不饱和碳氢化合物的稳定性;掌握烯丙基、苄基卤代物的亲核取代反应特性和共轭二烯的加成反应。
-
A process for the carbonylation of allylic butenyl ether (for example, methyl crotyl ether, 3-methoxybutene-1 and mixtures thereof) or mixture of butadiene and alcohol and production of beta-gamma unsaturated carboxylic acid esters (for example, methyl-3-pentenoate) utilizing a rhodium-containing catalyst for example, dicarbonylacetylacetonate rhodium(I or the like promoted with an iodide-containing compound (for example, HI, AlI3, SnI4, TiI4, CrI3, and CoI2 or the like).
一种将烯丙型丁烯基醚(如甲基巴豆基醚、3-甲氧基丁烯-1及其混合物)或者丁二烯与醇的混合物羰基化的方法,以及由含碘化物化合物(如HI、AlI3、SnI4、TiI4、CrI3和CoI2或等效物)促进,用含铑催化剂如二羰基乙酰丙酮酸铑(I或其等效物制备β-γ不饱和羧酸酯(如甲基-3-戊烯酸酯)的方法。
-
In this Ph. D. dissertation, reverse microemulsion method was fully used infabricating and modifying polyacrylamide with functional and high-relative moleculeweight. The copolymerization of 2-acrylamide-2-methylpxopanesulfonic acid, fluorescent monomer 4-methoxy-N-(2-N\', N\'-dimethylamino ethyl)naphthalimide alkyl chloride quaternary ammonium salt, fluorescentmonomer 4-(N\'-methyl-1-piperazinylallyl)-N-butyl-naphthalimide chloride quaternaryammonium salt, Cationic monomer dimethylethylammonium bromide and hydrophobical monomer octadecylacrylate with acrylamide and properties of the copolymers werestudied. The interaction between five polymers and Al_2O_3(012) crystal surface have beensimulated by Materials Studio 3.0 program package, binding energies and non-bondinteraction energies and deformation energies have also been acquired.
本文以制备具有较高相对分子质量和功能型PAM为研究目的,将反相微乳液法运用到其制备及改性的有关环节,通过反相微乳液聚合工艺,将几种改性功能单体2-丙烯酰胺基-2-甲基-丙磺酸、荧光单体2-(4-甲氧基-1,8-萘二甲酰亚胺基)-乙基二甲基烯丙基氯化铵、荧光单体4-(N'-甲基-1-哌嗪基)-N-丁基-1,8-萘烯丙氯季铵盐、阳离子单体丙烯酰氧乙基-二甲基-乙基溴化铵和疏水单体丙烯酸十八酯与AM共聚,制备AMPS改性PAM、荧光示踪型PAM、阳离子单体DMB改性PAM和OA改性PAM等四类不同功能单体改性PAM,并研究其应用性能。
-
In this project, we have prepared conveniently Si-Mg 1,1-difunctional group reagents-α-silylvinyl Grignard reagents by hydromagnesiation of alkynylsilanes; Se-Br 1,1-difunctional group reagents-α-bromovinylselenides by hydrobromination of alkynylselenides; Sn-Br and Sn-I 1,1-difunctional group reagents by hydrozirconation of alkynylstannanes followed by halogenating reaction.
本项目通过炔基硅烷的镁氢化反应,方便地制得了Si-Mg 1,1-双官能团试剂-α-硅基烯基镁化物;通过炔基硒醚的溴氢化反应,方便地制得了Se-Br 1,1-双官能试剂-α-溴代烯基硒醚;通过炔基锡烷的锆氢化反应,继而卤代方便地制得了Sn-Br和Sn-I 1,1-双官能试剂。
-
The result of potassium malonyloxyborohydride as a new hydroboration reagent reacts with terminal alkenes and alkynes is described.
介绍新的硼氢化试剂丙二酰氧基硼氢化钾与链端烯炔烃的作用,烯烃的硼氢化物在PTC条件下,插入∶CCl2 ,可得饱和羧酸;炔烃则难以与之硼氢化。
-
In addition, 65% ee was obtained for 1, 3-dimethylprop-2-enyl acetate. Interestingly, the reactivities of these ligands are all very high.
对于1, 3-二苯基烯丙基醋酸酯的烷基化和胺化反应, ee 值最高分别为93%和98%,此外,在对1, 3-二甲基烯丙基醋酸酯的烷基化反应中 ee 值最高也可达65%。
- 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。