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丙烯酰

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It provides a route tothe compounds which contains three functional groups, two carbon-nitrogentriple bonds and one carbon-carbon double bond. In water, metallic indiumpromotes carbon-sulfur bond coupling reaction of aromatic sulfonyl chloride withsuitable organic halides to afford sulfones. In the last chapter, metallic tin mediated allylation of aldimines with allylbromide was revealed.

第三章,我们研究了在水相介质中金属铟促进的烯丙基溴对1,1-二氰基-2-芳基乙烯的Michael加成反应,生成一个含碳碳双键和二个碳氮叁键的三官能团化合物,另外,金属铟在水介质中还可以促进芳基磺酰氯与卤代烃发生碳硫键的偶联,生成砜。

Methods Naloxone was synthesized starting from oxidation of thebaine, followed by hydrogenation, acylation, cyanidation, O-demethylation, hydrolyzation and N-allylation. The alternative method of O-demethylation, methane sulfonic acid/DL-methionine and hydrobromic acid were investigated.

在以蒂巴因为原料,经氧化、氢化、酰化、氰化、去氧甲基、水解、N-烯丙基化得到纳洛酮的合成路线中,分别采用甲磺酸/DL-甲硫氨酸和氢溴酸代替三溴化硼进行去氧甲基化和后续水解反应。

The results showed that there were 8 kinds of aliphatic, 5 kinds of esters, 2 kinds of aldehydes, 2 kinds of nitrogen sulfur heterocyclic rings and one kind of hydrocarbon, alcoholics, ketone, lactones respectively in the analyzed 21 kinds of aroma components, and the content of furfural,β-methyl valeric acid, palmitic acid, nicotine, neohytadiene were higher, next were acetyl ethyl propionate, caleric acid, phenyl ethyl acetate, hydroxylic diethyl succinate.

结果表明,在分析出的21种香气成分中,分别有脂肪酸类8种,酯类5种,醛类2种,氮硫杂环类2种,烃类、醇类、酮类、内酯类各l种,其中相对含量较高的物质成分是糠醛、β-甲基戊酸、十六碳酸、烟碱、新植二烯,其次是乙酰丙酸乙酯、异戊酸、苯乙酸乙酯、羟基丁二酸二乙酯等。

Objective To research the effects of a chiral aminoalcohol in the asymmetric allylation of acylhydrazones.

目的 研究手性氨基醇在酰腙不对称烯丙基化反应中的促进作用。

Last, we studied the allylation of benzoylhydrazones with allyltrichlorosilane.

在研究过程中,发现了一个C=N双键烯丙基化的新方法,和苯甲酰肼的新的合成方法。

We also studied the enantioselective conjugate addition of chalcone in the presents of chiral Ni2 aminoalcohol complexes.

我们还研究了手性氨基醇配体/镍盐催化的a,β-不饱和酮的不对称迈克尔加成反应,以及酰腙的不对称烯丙基化反应。

Objective: To investigate the arrest effect of diallyl disulfide in the cell cycle of human nasopharyngeal carcinoma CNE2 cell line and its molecular mechanism.

目的:在前期工作的检测上,进一步探讨二烯丙基二硫(diallyl disulfide, DADS)对人鼻咽癌CNE2细胞周期的阻滞作用,并研究组蛋白乙酰化状态及其调控p21WAF1蛋白表达改变的情况。

The alternative method of O-demethylation,methane sulfonic acid/DL-methionine and hydrobromic acid were investigated.

方法在以蒂巴因为原料,经氧化、氢化、酰化、氰化、去氧甲基、水解、N-烯丙基化得到纳洛酮的合成路线中,分别采用甲磺酸/DL-甲硫氨酸和氢溴酸代替三溴化硼进行去氧甲基化和后续水解反应。

A new fused polycyclic indoline compound was synthesized from aniline,with the key step of Pd-catalyzed tandem cyclization using hydroquinidine as the ligand and molecular oxygen as a green oxidant.

以芳香氨为原料,通过烯丙基化、重排、酰基化及钯催化的氧化环合反应合成了一种新的氮杂三环吲哚啉化合物,其结构经1H NMR,13C NMR,IR及HR-MS表征。

We ever reported cellulose is in propyl of Xi of ionic liquid 1-- chloric salt of Zun of 3- methylic Mi (the homogeneous phase acetyl in Am ImC L) converts reaction, falling without activator condition, one pace gets the CA of different DS, get acetone but the CDA[12] of dissolve.

我们曾报道了纤维素在离子液体1-烯丙基-3-甲基咪唑氯盐中的均相乙酰化反应,在无催化剂条件下,一步得到不同DS的CA,并得到丙酮可溶的CDA[12]。

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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。