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To optimize the compounding of the photo-sensitive resin, a novel prepolymer was synthesized and token by FT-IR. The prepolymer was an alicyclic epoxy acrylate, which was synthesized from the alicyclic epoxy resin.
为了优化光敏树脂配方,作者又合成了一种光敏树脂组分中的主体树脂并经傅立叶红外光谱表征,该树脂是以脂环族环氧树脂为原料合成的脂环族环氧丙烯酸酯。
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At first,the intermediate of sodium 3-chloro-2-hydroxy propanesulfate was synthesized from epichlorohydrin and sodium bisulfite;And then,using NaOH as a catalyst,the title compound has been synthesized from intermediate and allyl alcohol to reach the yield of about 70%.
先由环氧氯丙烷和亚硫酸氢钠合成中间体3-氯-2-羟基丙磺酸钠,然后中间体再与丙烯醇在氢氧化钠催化下生成目标产物2-羟基-3-烯丙氧基丙磺酸钠。
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Then Doripenem came into the market in the July ,2005. We studied the synthesis of Doripemen.Firstly, we synthesized the chemical 2 from the starting material------o-hydroxylphenylacylamine through Reformastky reaction, alkylation, Diekmann reaction, enolization, esterification and etc. Secondly, we synthesized the chemical 3 from L — hydroxylproline through the protection of carboxyl, amidogen and hydroxyl group, reduction by NaBr, SN_2 substitution and Mitsumobu reaction.
我们以水杨酰胺为起始原料,经Reformatsky反应、烷基化、Diekmann环合、烯醇化、酯化等反应合成双环母核2;再从L-羟基脯氨酸出发,经酯化保护羧基、保护氨基、保护羟基、硼氢化还原酯得醇、Sn2取代和Mitsumobu反应等合成巯基侧链3;最后由化合物3经脱保护、水解得硫醇,和化合物2在二异丙基乙基胺的作用下缩合,最后Pd/C催化脱保护,历经16步反应最终得到产物多尼培南。
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The results showed that the two synthesized compounds have good thermal stability; two synthesized compounds as additives in 5 cst possess rather good antiwear property and load-carrying capacity, and the antiwear ability of the additive loma is stronger than that of the additive boma; there is a pronounced synergism between the additives loma/boma and zddp in terms of the anti-wear property and load-carrying capacity.
发现两种化合物有很好的热稳定性;两种化合物作为润滑油添加剂在5 mm2/s基础油中有相当好的抗磨性能和承载能力,其中含有三嗪环的抗磨添加剂比不含三嗪环的抗磨能力好;两种抗磨添加剂均与zddp有很好的协同抗磨减摩作用。
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Some materials were synthesized in this paper at first, 1-nitro-2-pentanol was synthesized with nitromathane and butyraldehyde and the yield was 70.2%; l-nitro-2-pentanol was reduced to 1 -amino-2- pentanol with iron and the yield was 65.2%.
分别用氢氧化钠、三乙胺为缚酸剂,2-氨基-1-丁醇、1-氨基-2-戊醇、环己酮和二氯乙酰氯为原料,采用一步法和分步法合成了两种潜在除草剂安全剂。
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The following conclusions have been gotten from a large amount of experiments and determinations: Triiodide, pentaiodide, heptaiodide, nonaiodide, undecaiodide of solid tetra-n-butyl ammonium polyiodides and tetrabutyl ammonium bromide polyiodides can be synthesized by solid phase process which is a economic easy way, while its not suitable for synthesizing solid tetramethyl ammonium polyiodides; Solution polyiodides of triiodide, pentaiodide can be synthesized through the complexation process, and TX-10 is a better complexing agent; Triiodide, pentaiodide, heptaiodide resinic polyiodides were synthesized by ion-exchange of resinifying process, and that is a viable easy way.
在大量实验和分析的基础上,可得到以下结论:用固相法可以合成出碘三、碘五、碘七、碘九和碘十一形式的正四丁基多碘化铵固体高聚碘和四丁基多碘化溴化铵固体高聚碘系列化合物,是制备高聚碘的经济、方便的合成方法,但此法对合成四甲基多碘化铵固体高聚碘系列化合物并不适用;TX-10是合成溶液高聚碘较佳的络合剂,通过其络合作用可以合成出碘三和碘五形式的溶液高聚碘;采用树脂法,通过离子交换,合成出了碘三、碘五和碘七形式的树脂高聚碘,此法简单可行。
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In solid phase process, the polyiodides, which include triiodide, pentaiodide, heptaiodide, nonaiodide and undecaiodide tetra-n-butyl ammonium iodide, tetrabutyl ammonium bromide and tetramethyl ammonium iodide poly-compounds, were synthesized by the low-heat solid phase reaction between iodine and tetra-n-butyl ammonium iodide, tetrabutyl ammonium bromide or tetramethyl ammonium iodide; In complexation process, solution polyiodides were synthesized by complexing action of different agents; In resinifying process, triiodide, pentaiodide, heptaiodide resinic polyiodides were synthesized by ion-exchange when the strong basicity styrene anion exchange resin, potassium iodide and iodine were used as raw materials.
固相法是用正四丁基碘化铵、四丁基溴化铵或四甲基碘化铵分别与碘作用,通过低热固相反应,合成出碘三、碘五、碘七、碘九和碘十一形式的正四丁基碘化铵、四丁基溴化铵或四甲基碘化铵的系列高聚碘化合物;在络合法合成溶液高聚碘的实验中,选用几种络合剂通过络合作用首次合成了溶液高聚碘;树脂法合成高聚碘的实验是采用强碱性苯乙烯系阴离子交换树脂、碘化钾和碘为原料,通过离子交换,合成了碘三、碘五和碘七形式的树脂高聚碘。
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Respectively, glutamic acid derivatized β-CD has been synthesized with epoxy chloropropane as the intermediate, a water-insoluble yellow liquid was got after the acetylating of the by using acetic anhydride, which was used as a novel gas chromatographic CSP; A water-soluble β-CD polymer cross-linked with epoxy chloropropane has been synthesized, and the derivatives of β-CD polymer were synthesized by its alkylating and acetylating. The different β-CD derivatives were coated on silica capillary columns by dynamic method, the chromatographic properties and retention behaviors of the fused silica capillary columns were studied, the results showed that the β-CD derivatives had good stereoselectivity and separation results to some compounds, especially to various positional isomers and enantiomers.
本文还分别以环氧氯丙烷为中间体,合成了七{2,6-二-O-[3-(1,3-二羟基丙氨酸)]}-β-环糊精,再用醋酸酐将其乙酰化,得到了一种淡黄色粘稠液体,合成了一种新型的环糊精衍生物;以环氧氯丙烷作交联剂合成了一种水溶性的β-环糊精聚合物,再将其烷基化和酰基化,合成了β-环糊精聚合物的不同衍生物,用动态法将不同类型的β-环糊精衍生物涂渍在石英毛细管柱上,通过对所制备柱柱性能的测试和对一系列化合物的分离和保留行为的研究,结果表明所合成的β-环糊精衍生物对各类化合物,特别是对位置异构体和对映异构体具有较好的分离效果,显示了很强的立体选择性。
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The samples have lower permittivities by adding MgO before Ba0.6Sr0.4TiO3 powder be pre-synthesized, but have higher tunabilities and lower high frequency losses by adding MgO after Ba0.6Sr0.4TiO3 powder be pre-synthesized. The tunabilities of the samples prepared by adding 15%~25% MgO after Ba0.6Sr0.4TiO3 powder be pre-synthesized are all higher than 20% at 103 V/mm.
MgO添加量相同时,在预合成BSTO前加入,样品的介电常数较低;在预合成BSTO后加入,样品的高频损耗较小,可调性较高,当添加质量分数为15%~25%的MgO,样品在10^3V/mm电场强度下的可调性均高于20%。
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The supported WP catalysts showed considerable activity in HDS reaction of dibenzothiophene and HDN reaction of quinoline. The ibenzothiophene HDS activity and quinoline HDN activity of the spported WP catalysts synthesized by co-impregnation method was better than that synthesized by mixing method. The HDS and HDN activities of 25~30% WP catalysts synthesized by co-impregnation method and reduced at 650~750℃ were better than those of the corresponding sulfurized catalyst.
负载型WP催化剂具有较好的二苯并噻吩加氢脱硫和喹啉加氢脱氮活性,共浸渍法制备的磷化钨催化剂二苯并噻吩加氢脱硫和喹啉加氢脱氮活性要高于混合法制备的磷化钨催化剂。650~750℃还原制备的负载量25~30%的浸渍法磷化钨催化剂具有较高的二苯并噻吩加氢脱硫和喹啉加氢脱氮活性,高于相应的硫化态催化剂。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。