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亚胺

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Acenaphthene was dehydrogenated to afford acenaphthylene by photochemical reaction with N bromosuccinimide in benzene with the addition of quinoline at room temperature and atmospheric pressure was studied.

在常温常压下,以苯作为溶剂,加入喹啉,使苊与N-溴代丁二酰亚胺发生光化学脱氢反应生成苊烯。

The total yield of the product was 28%. Bridged imine acetamide was used to produce a new type of antibiotic derivatives from macrolid via removing cladinose sugar from macrolid and joining 6 and 11 position on macrolid ring.

桥红霉素亚胺用于生产新型抗生素类药物——桥红霉素,它是在红霉素内酯环结构上脱掉cladinosesugar,并将红霉素内酯环上6,11位相连,成为全新的红霉素衍生物。

Anilido-imino nickel complex 1 {(C6H3Me2-2,6)N=CH-5-NO2-C6H3N (C6H3Me2-2,6)}NiBr was first synthesized, and its catalytic behavior toward polymerizations of norbornene and ethylene in the presense of methylaluminoxane were investigated in detail. The complex activated with methylaluminoxane exhibited high activities for norbornene polymerization.

首次合成了苯胺基亚胺镍配合物1{(C6H3Me2-2,6)N=CH-5-NO2-C6H3N(C6H3Me2-2,6)}NiBr,研究了其在助催化剂甲基铝氧烷的作用下对降冰片烯、乙烯的均聚以及对降冰片烯和乙烯的共聚的催化性能。

For the advantages of mild reaction conditions,DDC condensation method and acyl chloride esterification method are much more popular.

由于具有反应条件温和的优点,二环己基碳二亚胺脱水缩合法和酰氯酯化法是目前国内外最常用的两种方法。

The result showed that 5-fluorouracil could link to the peanut agglutinin by EDC/NHS crosslinking with high drug ratio.

结果表明碳二亚胺法可成功实现药物与花生凝集素的连接,该法制备得到的结合物其药物结合率高。

The originalprocedure has subsequently been replaced by milder and more environmentallyfriendly conditions. We tried to alkylate 3,4,5-trimethoxytoluene by2-allylphenylbenzyl ether in the presence of N-bromosuccinimide.

本实验是在溴代琥珀酰亚胺的作用下使2-烯丙基苯基苄基醚产生苄正离子,苄正离子亲电进攻3,4,5-三甲氧基甲苯从而进行傅氏烷基化反应的。

To our knowledge, however, it has never been used for reductive amination of carbonyl compounds, nor for reduction of pre-formed imines.

可是据我们所知,它还从来没有被用于羰基的还原氨化和用于一个已制亚胺的还原。

Starting with two reactive methylene compounds, ethyl cyanoacetate and malononitrile, two 5-amino-1H-pyrazoles were prepared through the intermediates ketene dithioacetal.

从两个活泼亚甲基化合物开始,经过乙烯酮二硫代缩醛中间体,合成了两个5-氨基-1H-吡唑,以这个两个化合物为中间体,与芳香族和脂肪族α-溴代酮反应,而后经酸催化亚胺化互变异构后得到含咪唑并[1,2-b]吡唑甲硫醚类化合物6a-6g。

Tetrachloroterephthalic acid was prepared by chlorinating terephthalic acid, oleumsolvent and iodine catalyst. Tetrachloroterephthalic acid was acylated by sulphurous oxychloride in the presence of DMF to form tetrachloroterephthaloyl chloride. The acyl chloride product was fluorinated by potassium fluoride and esterified by methanol to synthesize dimethyl tetrafluoroterephthalate. The ester was reduced with potassium borohydride and lithium chloride to give tetrafluoroterephthalyl alcohol. The above product was bromated in the hydrobromic acid to obtain 4-bromomethyl-2,3,5,6-tetrafluoro-benzene methanol. 4-Methyl-2,3,5,-6-tetrafluorobenzene ethanol was obtained by reducing the bromide with magnesium. In the exist of DCC and DMAP, tefluthrin was got by the condensation reaction between 4-methyl-2,3,5,6-tetrafluoro-benzene methanol and-(1RS,3RS)- 3-(2- chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cycolpropanecar-boxylate acid.

对苯二甲酸与氯气在碘存在下以发烟硫酸为溶剂进行氯化制备四氯对苯二甲酸;再以DMF为催化剂与二氯亚砜反应生成四氯对苯二甲酰氯;以氟化钾为氟化剂,环丁砜为溶剂置换氟化,再与甲醇酯化得到四氟对苯二甲酸甲酯;以KBH4-LiCl为还原剂二甲醚为溶剂反应制得四氟对苯二甲基苄醇;以氯苯为溶剂在溴化氢溶液中溴化得到溴化产物;在乙醇溶液中经镁粉还原得到4-甲基-2,3,5,6-四氟苄醇;甲基苄醇与功夫酸在催化剂二环己基碳二亚胺和4-二甲氨基吡啶作用下缩合得到七氟菊酯,总收率达43.6%。

Compounds which possess active hydrogen atoms, include those which contain hydroxyl, carboxyl, mercapto, primary and secondary amino groups, carbonamido, sulphonamido, and reactive methylene or imide groups.

化合物具有活性氢原子,包括那些含有羟基,羧基,巯基,小学和中学氨基,carbonamido,sulphonamido,和活性亚甲基亚胺或团体。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

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