- 更多网络例句与氨基的相关的网络例句 [注:此内容来源于网络,仅供参考]
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The resultant was hydrogenised to remove protective group of amino group, then the product was reacted with NaNO2 to give diazonium salt, which was conjugated with salicylic acid, hydroxybenzene, N-salicyloyl glycine acid to get azo derivatives of 4-ASA.
本文首先对4-ASA的氨基和羟基进行了选择性保护,通过氢化还原法选择性脱除氨基的保护基,然后将氢化产物制成重氮盐,通过与水杨酸、苯酚和水杨酰甘氨酸发生反应生成4-ASA的偶氮衍生物,最后在碱性条件下水解得到最终产物。
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Both the protection and deprotective group methods for the amino-group on side chain of a new N-pivot lariat crown ether were studied comparatively.
研究了一种新的氮支套素冠醚侧链上氨基的保护和脱保护基方法,结果表明,由过量乙二胺与对甲苯磺酰氯反应得到的单保护乙二胺(N-对甲苯磺酰基乙二胺4a),经N-烷基化环化反应,然后在氢化铝锂存在下脱除保护基,即可制得最佳产率的N-(2-氨基已基)单氮杂-12-冠-4(1)。
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A process for reducing nitryl with unstable guanyl on para-position of benzene ring into azyl features that active metal reacts on organic acid and solvent at ordinary temp. and pressure to reduce N-(2 or 3-M, 5 or 6-M',4-nitrophenyl)-N',N'-dimethyl acetamidine into N-(2 or 3-m, 5 or 6-M', 4-aminophenyl)-N',N'-dimethyl acetamidine, where M=H,-R,-OR,-COOR (R=H, C1-C6); and M'=H,-R,-OR,-COOR (R=H, C1-C6). Its advantages include reduced by-reaction and high reducting rate up to 80%-95%.
本发明是将苯环上对位带有不稳定脒基的硝基还原为氨基的方法,采用活泼金属,如:锌或锡,与有机酸和适当的溶剂,在常温、常压下发生反应,将N-(2或3-M,5或6-M',4-硝基苯基)-N',N'-二甲基乙脒还原为N-(2或3-M,5或6-M',4-氨基苯基)-N',N'-二甲基乙脒,其中M=H,-R,-OR,-COOR(R=H,C1-C6),M'=H,-R,-OR,-COOR(R=H,C1-C6),减少了副反应,使还原收率达到80%以上,最高可达95%以上,更适用于工业化生产。
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Therelationship of the amount of catalyst and the ee% of product was seen to be negative nonlin-ear. Catalyst 3 was used in the enantioselective addition of diethylzinc to aromatic aldehydesand gave good results. The configuration of products was determined by the configuration ofthe catalysts' chiral carbon linked with hydroxy group. Using β- amino alcohols bearing only one chiral center as catalysts for the enantiose-lective addition were studied. D-N, N-dialkyl-2-amino butanol gave poor catalytic effect be-cause of their structure. The configuration of the product is the same as the catalyst. Anotherkind of β- amino alcohols - phenylglycine derivatives and valine derivatives have chiralcenter on the carbon linked with amino group. Catalyzed by-phenylglycine derivatives 6,7, 9, 10, the reactions gave satisfied results. The optical yields exceeded 80%.
在探讨了含有两个手性中心的β-氨基醇之后,选择了只有一个手性中心的β-氨基醇,一是手性中心为连羟基的手性碳原子:D-N,N-二烷基-2-氨基丁醇;二是手性中心为连氨基的手性碳原子:D-苯基甘氨酸衍生物和L-缬氨酸衍生物。D-2-氨基丁醇的催化效果不太好,这与其结构的空间位阻较小有关系,反应产物与连羟基手性碳构型一致;由苯基甘氨酸和缬氨酸出发合成五种β-氨基醇6-10,研究了不同ee%的-6作用下的二乙基锌-苯甲醛加成反应,发现该催化剂具有不对称放大效应;-7,9,lO的催化效果也比较令人满意,光学产率80%以上,所得产物构型与催化剂构型一致。
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To understand the reaction of tetrakis hydroxymethyl phosphonium chloride with collagen protein,the interactions of THPC with polycaprolactam,poly vinyl alcohol or ethylenediamine which were used as the model substances of amido,hydroxy and amino groups of collagen protein were examed.
通过研究THPC与聚己内酰胺、聚乙烯醇、乙二胺的酰胺基、羟基、氨基的反应,间接证明THPC主要与胶原蛋白的氨基结合,可与氨基以n∶n=1.0∶2.2形成交联,THPC与羟基和酰胺基均有少量结合,并在pH=8.0时结合量最高。
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Crystal by DTT into the protoxin with an end amino group; activation and derivation of abamectin to form abamectin-COONa with a carboxylic group; final bioconjugation by using amino-carboxylic conjugator EDC to achieve the substance combination of two biotoxins.
晶体进行酶解改造,形成带末端氨基的原毒素;将阿维菌素的羟基进行激活、衍生化,形成带羧基的阿维菌素衍生物(Abamectin-COONa);再利用氨基-羧基偶联剂进行两种生物毒素的生物耦合。
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The a-amino groups of amino acids react reversibly with aldehydes to form a variety of compounds, each of which is called a Schiff's base.
氨基的α氨基与醛反应是可逆的,可形成多种化合物,每一种都叫希夫碱。
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Bombyx mori silk fibroin film was treated by plasma processes with SO 2 gas to introduce functional groups on the surface of film. Meanwhile, functional groups were also introduced by the reaction of 1,3 propane sultone with amine sites on the surface of silk fibroin film which were produced by NH 3 gas plasma.
从蚕丝中提取的丝素蛋白制备成薄膜,首次采用二氧化硫等离子体处理在材料表面引入磺酸基团;同时丝素蛋白膜用氨气等离子体处理后在表面接入氨基,利用 1,3 丙磺酸内酯与氨基的反应在材料表面接枝磺酸基团。
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Owing to different structures of cotton fiber and chitin fiber ,they have different adsorbability to reactive dyestuffs.
采用不同的醛类化合物对甲壳素纤维上的氨基进行保护,活性染料染色后用稀酸脱去氨基的保护基。
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The reactivities of epoxy,melamine and phenolics in epoxy/melamine/ phenolics baking paint were investigated.
考察了环氧氨基酚醛烘烤涂料中环氧树脂、酚醛、氨基的反应活性。
- 更多网络解释与氨基的相关的网络解释 [注:此内容来源于网络,仅供参考]
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amino:氨基的
amino resins 氨基树脂 | amino 氨基的 | aminoacetic acid 氨基乙酸
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Amino resin:氨基树脂
氨基树脂(amino resin)是由氨基化合物和甲醛缩聚而成的热固性树脂,它通常作为涂料生产的原料.涂料工业所用的氨基树脂必须用醇类醚化改性,使之可溶于有机溶剂中,它在热固性涂料中起交联作用.氨基树脂漆中,氨基树脂与醇酸树脂,聚酯树脂,
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deaminase:脱氨基酶
deairing vessel for flow meter 流量计用真空器 | deaminase 脱氨基酶 | deaminated wool 脱氨基的羊毛
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oxidative deamination:氧化脱氨基(作用)
(一)氧化脱氨基作用(Oxidative Deamination) 氧化脱氨基作用是指在酶的催化下氨基酸在氧化脱氢的同时脱去氨基的过程. ...在体内,谷氨酸脱氢酶催化可逆反应. 一般情况下偏向于谷氨酸的合成(△G°′≈30kJ.mal1),因为高浓度氨对机体有害,此反应平衡点...
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PABA:对氨基苯甲酸
伍兹发现酵母提取物所含的对氨基苯(甲)酸(PABA)与具有对抗作用的对氨基苯磺酰胺极为相似. 这种对抗作用发生在生物体需要对氨基苯(甲)酸的生物新陈代谢过程中. 几年后,在对叶酸的研究中发现,对氨基苯(甲)酸是叶酸分子的一个组成部分.
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amido:表"氨基"之义
amido | 氨基 氨基的 | amido- | 表"氨基"之义 | amidobenzene | 苯胺, 阿尼林
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aminoacetal:氨基乙缩醛
amino 氨基的 | aminoacetal 氨基乙缩醛 | aminoacyl 氨基酰
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aminoacetic acid:氨基乙酸
amino 氨基的 | aminoacetic acid 氨基乙酸 | aminobutyric 氨基丁酸
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deaminated wool:脱氨基的羊毛
deaminase 脱氨基酶 | deaminated wool 脱氨基的羊毛 | Dean and Stark apparatus 迪安-斯脱克水分测定仪
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allosteric:别构的
allosteric modification 别构修饰 | allosteric 别构的 | amino 氨基的 ~acid氨基酸