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The chromogenic responding ability increases as the substituent changes from phenyl to naphthyl or anthryl.

实验结果表明,偶氮团的引入改善了8-羟喹啉的生色能力,并且在乙腈溶液中随着取代变为萘和蒽时,化合物的吸收光谱发生红移。

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The major components were Triphenylmethane, Phytol, n-Hexadecanoic acid, Phenol, 2,4,6-tris (1,1-dimethylethyl).And etc.

其主要成-甲烷、叶绿醇、正十六碳酸、2,4,6-(1,1-二甲乙)-酚等,这为进一步开发利用蒌蒿提供了科学依据。

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By using phenylfluorone photometer analysis,solution of germanium content in 2-octanol and petroleum was measured.

本文采用荧光酮光光度法测定仲辛醇/石油醚溶液中锗的含量。

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MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry.

运用MNDO计算和群论,优化得到了较满的中位取代四卟啉(H2TPP)的子构型。

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Reaction of ferrocenylphenylcarbinol with ethereal solution of boron trifluoride in dichloride methane formed the relevant ferrocenylphenylmethyl carbocation.

二茂铁甲醇与氟化硼-乙醚溶液在二氯甲烷中作用,形成二茂铁碳正离子。

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Objective:To develop a GC-MS approach for the determination of tripropyltin(TPrT),tributyltin(TBT) and triphenyltin(TPhT) in fish.

建立水产品中锡、锡和锡的气相色谱-质谱(GC-MS)法。

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The bulk and solution photopolymerization of vinyl butyl ether were studied using diph-enyl-4-thiophenoxyphenyl sulfonium salt (DPTS) as photoinitiator.

以二-4-硫鎓盐(DPTS)为光引发剂,研究了乙烯正丁醚的本体和溶液光聚合。

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Methyl 1 phenyl Propanone was synthesized with benzene and iso butyryl chloride by using anhydrous aluminium trichloride as catalyst.

与异丁酰氯在无水氯化铝作催化剂的条件下制备异丙酮。

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A new path for the preparation of leaf alcohol with 3-chloropropanol, triphenylphosphine and propionaldehyde through Wittig reaction was studied.

本文研究了以3-氯丙醇,膦和丙醛为原料利用威蒂希反应合成叶醇的新路线。

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To continue the natural identified chemical after that,we have found that 4-(4-hydroxyphenyl)-2-butanol(Rhododendrol:RD)inhibited the melanin synthesis more than Arbutin did.

我们在探索天然化合物的过程中,发现4-(4-羟)-2-丁醇(杜鹃醇:以下简称RD)抑制黑色素合成的作用比熊果苷更强。

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This paper initially discussed synthesis and modification of tetrafunctional epoxy resin(1,1,2,2- tetrakis(hydroxy phenye)ethane),as well as application in copper clad laminate.

对四官能环氧树脂[1,1,2,2-四(对羟)乙烷四缩水甘油醚]的合成与改性及在覆铜板中的应用作了初步探讨,并对其屏蔽紫外线与产生荧光的机理作用作了简单阐述。

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As the isocyan group is polymerized further, diphenyl carbondiimine may be formed, further polymerization of which forms a nitrogen-containing polycyclic aromatic compound.

异氰化合物进一步二聚成二碳化二亚胺,后者又聚合生成含氮杂环的多环芳烃。

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N butyl 2 ethoxy thioacridone was prepared from o chloro benzoic acid and p phenetidine by means of Ullman reaction,cyclization,N alkylation and sulfurization.

以邻氯甲酸和对乙氧胺为原料,经过胺的化、二芳胺的环化、N-烷化、硫代化反应合成了N-丁-2-乙氧硫代吖啶酮。

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The main synthetic methods of o-phenylphenol were reviewed.The method and research status of dehydrogenation to o-phenylphenol after cyclohexane condensation reaction were discussed detailedly.

摘要介绍合成邻酚的几种主要工艺法,对环己酮缩合脱氢法制邻酚的合成法及研究状况进行详细阐述。

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Ethyl phenylacrylate intermediate bringing a double bond was introduced first,which is subsequently transformed into triketone and then DCM was obtained with high purity.

采用具有烯烃骨架的β-丙烯酸酯为中间体先引入双键,再经过酮合环制备乙烯吡喃。

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The reaction of triphenyltin with nitrous acid in aqueous phase in the presence and absence of O2 was studied by a laser flash photolysis technique.

利用激光闪光光解技术进行了有氧和无氧条件下氯化锡与亚硝酸水溶液的紫外光解反应研究。

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A new tetrakis( p glycylglycinephenyl)porphin and its rare earth (Yb,Sm) complexes were synthesized.They have been characterized by elemental analysis,UV vis,IR, 1HNMR and laser Raman spectra.

首次合成了一种新型的四(对甘氨酰甘氨酸)卟吩及其稀土镱、钐的配合物。用元素、红外光谱、紫外可见光谱、核磁共振和激光拉曼光谱等法进行了表征。

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As shown by study the extracting powers of two extraction agents are changed with acidy of developer extracting power N,N-diphenyl glycine is stronger than N-n-butyl glycine for 5 metal ions.

N,N—二甘氨酸对5种金属离子的萃取能力强于N—正丁甘氨酸。

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The synthetic medium of optical N acylalanines was N (2,6 xylyl) alanine.It was reacted with 1 menthol and prepared into its menthol esters which were purified by TLC, resolved and determined by HPLC.

光学活性杀菌剂的合成中间体N-(2,6-二甲)-丙氨酸与l-薄荷醇在催化剂作用下,生成非对映异构体的薄荷醇酯。

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Crash Course 综合篇

They're a phenyl group joined by a methyl group instead of just directly.

它们是一个由甲基连接的苯基, 而不是直接连接的。

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Crash Course

We also know that there's a phenyl group on the third carbon.

我们还知道第三个碳上有一个苯基

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博兹——化

And so in an acid-base titration what we'll use is phenolphthalein.

因此, 在碱滴定中, 我们将使用的是苯基邻苯二甲

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Crash Course 综合篇

Now benzoic acid is one of literally infinite possible benzene-based compounds.

现在苯甲是几乎无限可能的苯基化合物之一。

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语版 TED-Ed 演讲精选

Named Kevlar, this alternating blend of 1,4-phenylene-diamine and terephthaloyl chloride combine at the molecular level to form a series of parallel chains.

这种由 1,4-苯基二胺和对苯二甲酰氯交替混合而成的化合物被命名为凯夫拉,在分子水平上结合形成一系列平行链。

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Crash Course 综合篇

When benzene is used as an attachment, we call it a phenyl group, so this is 2-phenylhexane.

当苯用作连接物时, 我们称其为苯基, 因此这是 2-苯基己烷。

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Boost Your Biology with Lucas Aoun

So what I did is I took I took one gram of L-tyrosine, 500 milligrams of D-L-phenylalanine just for precursor for the dopamine.

所以我服用了1克L-酪氨和500毫克D-L-苯基丙氨,后者作为多巴胺的前体。

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Crash Course 综合篇

If one of the hydrogens is replaced with a phenyl group, well that chemical was first derived from trees in the Styrax family, so it's called styrene.

如果其中一个氢原子被苯基取代,那么这种化物质首先来自苏合香的树木, 因此被称为苯乙烯。

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Boost Your Biology with Lucas Aoun

And then we discovered that it's a natural source of phenylethylamine, which is PEA, which is known in chemistry as being the molecule of love, the molecule of joy.

后来我们发现, 它是一种天然的苯基乙胺来源,即PEA,在化中被称为“爱的分子”、“快乐的分子” 。

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