环胺
- 与 环胺 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Firstly, Copolymerization of acrylamide and styrene was carried out in a microemulsion system, in which AM aqueous solution was the continue phase and St was the dispersed phase using ST-80 as surfactants respectively, then hydroxamic functions were prepared with hydroxylamine salt at temperatures of from 60℃ to 90℃.
首先以丙烯酰胺水溶液为连续相,以苯乙烯为分散相,ST-80为乳化剂制成微乳液,在15℃~35℃合成丙烯酰胺与苯乙烯的共聚物;然后采用程序控温方式,在60℃~90℃用硫酸羟胺将共聚物羟肟化合成了一种带有苯环结构的嵌段型氧肟酸类聚合物材料。
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The structure analysis indicates that the reverse symmetry ligand H4LB molecules are linked into a 2D supermolecular network by two types of hydrogen bonds. One type occurs between the oxalamide oxygen group and the phenol hydroxyl qroup of the nearest molecule with d=2.906(2) and ∠O-H…O=151.8°. The other type is between the oxalamide nitrogen group and the oxalamide oxygen group of anther molecule with d=2.849(2),∠N-H…O=158.7°.
晶体结构研究表明配体H4L为顺式桥联分子,晶体中存在两种氢键,一种是草酰胺基团的O原子与苯环上的酚羟基形成O-H…O氢键[d=2.906(2),∠O-H…O=151.8°];另一种是草酰胺基团的氨基与相邻草酰胺基上的O原子形成N-H…O氢键[d=2.849(2),∠N-H…O=158.7°],通过上述两种氢键将化合物H4LB连接成二维网络结构。
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Phenylenediamines, aminophenols, methoxyanil ines, and 1,4- hydroquinone, 1-naphthylamine were polymerized via the catalysis of horseradish peroxidase in mixed solvents of l,4-dioxane and water at amibient conditions by using hydrogen peroxide as the oxidant. Several factors influencing the polymer yield, such as the concentration of the substrate, pH value and oxidant amount were examined using a- phenylenediamine as substrate.
本文选择了苯二胺、氨基苯酚、甲氧基苯胺三个系列,以及对苯二酚、1-萘胺等单体,在二氧六环-水混合介质中以辣根过氧化物酶为催化剂,以双氧水为氧化剂进行了不同底物的室温酶促聚合,并以邻苯二胺为底物考察了溶剂用量、pH值、作为氧化剂的双氧水用量等条件对聚合物收率的影响。
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In the last part we first synthesized the propargylic amines though several methods and then developed a new methodology for the synthesis of -α-chloroalkylidene-β-lactams via the catalysis of PdCl〓 with CuCl〓 and BQ with moderate to good yields and good generality.
论文的第三部分工作是我们首先通过几种方法合成了炔丙基胺化合物,接着对PdCl〓催化的炔丙基胺的羰基插入环化反应进行了研究,以中等收率得到-α-氯代亚烷基-β-内酰胺化合物,反应的普适性良好。
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In this paper, 4-4-(trifluoromethoxy benzoyl cyclohexyl-3, 5-diaminobenzoate with a large branch chain, pyromellitic dianhydride and 4-(4-aminobenzyl) benzenamine were used to synthesize polyimides. The effect of monomer charge order on pretilt angle was investigated for the first time when PIs were used as LC alignment layer, and the effect of diamine mole ratio on pretilt angle was studied. The thermal stability of the pretilt angle was discussed.
文章用均苯四酸二酐、4,4'-二胺基二苯甲烷和具有较大支链的4-(4-苯甲酰基)环己基-3,5-二胺基苯甲酸酯等单体制备聚酰亚胺,首次研究了单体加料顺序对液晶预倾角的影响,同时也研究了二胺配比对液晶预倾角的影响问题,并探讨了预倾角的热稳定性等问题。
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The glycyrrhizic acid antigen is prepared through the process including following steps: dissolving glycyrrhizic acid in N, N-dimethyl formamide, dioxane or dimethyl sulfoxide, heliophobically adding N-hydroxy succinimide, reacting with dicyclohexylcarbodiimide at 0-10 deg.c for 2-5 hr; and reacting with carrier protein at normal temperature for 4-6 hr to obtain glycyrrhizic acid antigen.
本发明所提供的甘草酸抗体,是用甘草酸抗原免疫动物,然后从被免疫动物的血清中分离得到的;所述甘草酸抗原按如下过程制备:先将甘草酸溶解在N,N-二甲基甲酰胺、二氧六环或二甲基亚砜中,避光加入N-羟基琥珀酰亚胺,然后在0-10℃条件下与二环己基碳二亚胺反应2-5小时;接着与载体蛋白常温反应4-6小时,得到甘草酸抗原。
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Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.
采用&一勺烩&方法,以4-羟基苯甲腈为起始原料,首先与硫氢化钠和无水氯化镁在N,N-二甲基甲酰胺中反应,所得中间体不经分离,直接加入2-氯乙酰乙酸乙酯进行环合反应,得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯(2);然后通过六亚甲基四胺/三氟乙酸进行Duff反应,得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯(3);再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。
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Two types of P Br N contained flame retardant,O (2,4,6 1 trioxo 1 oxyphosphabiscyclooctane 4 methylene) O (2,3 dibromopropyl)phosphoric melamine salt and O (2,4,6 tribromophenyl)phosphoric melamine salt,were synthesized from phosphorus oxychloride,pentaerythritol,2,3 dibromopropanol,2,4,6 tribromophenol and melamine,etc.
以三氯氧磷、季戊四醇、2 ,3 二溴丙醇、2 ,4,6 三溴苯酚及三聚氰胺等为原料合成了两种含磷溴氮阻燃剂,即O (2 ,4,6 三氧杂 1 氧基磷杂双环 [2 。2 。2 ]辛烷 4 亚甲基) O 2 ,3磷酸三聚氰胺盐和O (2 ,4,6 三溴苯基)磷酸三聚氰胺盐。
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A plausible process of this reaction is as following: Aldehyde was in equilibrium with the enol form, aldehyde reacted with aniline catalyzed by 2,2,2-trichloroacetic acid to afford imine, the generated imine immediately reacted with enol to form intermediate via intramolecular cyclization.
我们发现一分子芳基叠氮和一分子三苯基磷反应生成一分子磷亚胺,后者与由两分子取代的苯氧乙酰氯原位生成的烯酮反应生成4-亚烷基-β-烷基-内酰胺,其串联过程涉及烯酮亚胺的形成及其与烯酮的[2+2]的环加成反应。
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Their chemical structures were elucidated on the basis of physicochemical properties and spectral dataIR,FAB-MS,~(1H-NMR,and ~(13)C-NMR.Result: Six compounds were isolated and identified as: aurantiamide acetate(1),cyclo(2),N-p-coumaroyltyramine(3), N-trans-feruloyltyramine(4),N-cis-feruloyltyramine(5),and nicotinic acid(6),respectively.
结果:分离鉴定了6个生物碱,分别为aurantiamide acetate(1)、环二肽(2)、香豆酰基酪胺(3)、N-反式阿魏酰基酪胺(4)、N-顺式阿魏酰基酪胺(5)、烟酸(6)。
- 推荐网络例句
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Plunder melds and run with this jewel!
掠夺melds和运行与此宝石!
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My dream is to be a crazy growing tree and extend at the edge between the city and the forest.
此刻,也许正是在通往天国的路上,我体验着这白色的晕旋。
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When you click Save, you save the file to the host′s hard disk or server, not to your own machine.
单击"保存"会将文件保存到主持人的硬盘或服务器上,而不是您自己的计算机上。