氧化合物
- 与 氧化合物 相关的网络例句 [注:此内容来源于网络,仅供参考]
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A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl-ester derivatives thereof; or inertly substituted derivatives of the foregoing.
一种用于丙烯聚合的催化剂组合物,所述催化剂组合物包括:一种或多种齐格勒-纳塔主催化剂组合物,该主催化剂组合物包括一种或多种过渡金属化合物和一种或多种芳族二羧酸酯内部电子给体;一种或多种包含铝的助催化剂;选择性控制剂,该选择性控制剂包括至少一种包含硅的化合物,该化合物包括至少一种与硅原子连接的C 1-10 烷氧基;和一种或多种活性限制剂化合物,该活性限制剂包括一种或多种脂族或脂环族的单或聚羧酸类、其烷基-、环烷基-或烷基-衍生物、或上述惰性取代的衍生物。
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Quinazolinone ring was used to replace the quinoline moiety of quinoline phenoxyphenylacetic acids which have been discovered as potent AⅡ antagonists, to give a new series of antagonists, while their quinazoline analogs were obtained as isomers during the synthesis of.
前文报道了一系列喹啉苯氧基苯乙酸类非肽类血管紧张素Ⅱ受体拮抗剂,本文以喹唑啉酮代替化合物的喹啉获得化合物,在合成化合物时,同时还获得了化合物。
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The present invention relates to compounds of formula wherein R is hydrogen, lower alkyl, lower alkoxy, halogen or lower alkyl substituted by halogen; R is hydrogen or halogen; or R and R are together with the carbon atom to which they are attached -CH=CH-CH=CH-; R is hydrogen, lower alkyl, phenyl optionally substituted by halogen, or is hetaryl, optionally substituted by lower alkyl; R is hydrogen, lower alkyl, phenyl, benzyl, lower alkenyl, lower alkoxy, phenyloxy, benzyloxy, S-lower alkyl, halogen, CN, lower alkyl substituted by halogen or O-lower alkyl substituted by halogen; R is hydrogen or lower alkyl, aryl is phenyl or naphthyl; n is 1, 2 or 3; m is 1 or 2; and pharmaceutically acceptable acid addition salts and tautomeric forms thereof.
本发明涉及式化合物及其可药用的酸加成盐和互变异构形式,其中R 1 是氢、低级烷基、低级烷氧基、卤素或被卤素取代的低级烷基;R是氢或卤素;或R 1 和R与它们连接的碳原子一起是-CH=CH-CH=CH-;R 2 是氢、低级烷基、任选被卤素取代的苯基或者是任选被低级烷基取代的杂芳基;R 3 是氢、低级烷基、苯基、苄基、低级链烯基、低级烷氧基、苯氧基、苄氧基、S-低级烷基、卤素、CN、被卤素取代的低级烷基或被卤素取代的O-低级烷基;R 4 是氢或低级烷基,芳基是苯基或萘基;n是1、2或3;m是1或2。
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Two benzothiazole ester compounds containing boron with different alkyl chain, Di-n-hexyl-[2-(2-benzothiazolylthio)] ethyl boric acid ester (BNS-1) and Dicyclohexyl-[2-(2-benzothiazolylthio)] ethyl boric acid ester(BNS-2), were synthesized and their tribological performance as additives in rapeseed oilwas investigated using a four-ball testing machine.
合成了两种含不同烷基链的含硼苯并噻唑酯类化合物,即二正己氧基-2-[(2-苯并噻唑基)硫代]乙氧基甲硼烷(BNS-1)和二环己氧基-2-[(2-苯并噻唑基)硫代]乙氧基甲硼烷(BNS-2)。
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The dissertation mainly consists of two parts:1. The Reaction Chemistry of Alkynes under Palladium Catalysis Part 1 studies the reaction α,β-unsaturated carbonyl compounds with alkenylpalladium intermediate generated by nucleopalladation, and discovered 1 the Pd-catalyzed tandem addition reaction of halides, alkynes and α,β-unsaturated carbonyls,2 the four-component tandem addition reaction of halides, alkynes and α,β-unsaturated carbonyls, 3 the tandem intramolecular oxypalladation-conjugate additionreaction of alkynoic acids with α,β-enals. These new reactions provide notonly efficient highly stereoselective methods for the synthesis of γ,δ-unsaturated,polyunsaturated carbonyl compounds and γ-lactonic aldehydes, but also thebasic transformations for a number of C-C bond formation reactions which can be usedto design synthesis of many acyclic, cyclic or polycyclic compounds.
本论文的主要工作分为两个部分:一、钯催化下炔烃的反应化学在本小组前人工作的基础上,我们详细研究了炔烃亲核钯化产生的烯基钯中间体与α,β-不饱和羰基化合物的反应,发现两价钯催化下卤离子-炔烃-α,β-不饱和醛酮的串联加成反应、卤离子-炔烃-α,β-不饱和醛酮的西组分串联加成及炔酸分子内氧钯化-串联Michael型加成反应;由此发展了γ,δ-不饱和醛酮、多不饱和羰基化合物和带有醛酮基侧链的γ-丁内酯衍生物的高立体选择性合成方法,这一过量卤离子存在下的烯基钯对α,β-不饱和羰基化合物共轭加成反应的发现,为大量碳-碳键形成反应的实现提供了基础,使我们能够从这一基本反应出发,设计和开发多种分子内、分子间的碳碳成键反应,以好的立体、区域选择性组建开链、环状及多环类型的化合物。
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Compounds were identified by NMR etc, and they are veraflorizine 1, ebeinone 2, verticinone 3, isoverticine 4, trilinolein 5, phenanthrene 6, 2,5-dimethoxy-1,4-benzoquinone 7, tetradecane 8. All of them were isolated from this plant for the first time.
从安徽舒城县产舒城贝母的干燥鳞茎中分离得到了14个单体化合物,应用核磁共振等手段鉴定了8个化合物的结构,其中4个化合物为异甾体生物碱,4个为非生物碱,分别为:veraflorizine 1、鄂贝乙素2、浙贝乙素3、异浙贝甲素4、三亚麻油酸甘油酯5、菲6、2,5—二甲氧基苯醌(2,5-dimethoxy-1,4-benzoquinone)7和正十四烷8,这些化合物均为首次从该植物中分离得到。
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In the results of the optical properties, these molecular monomers have different HOMO and LUMO energy gap such that there are dual-emission and energy transfer mechanism in solution fluorescence spectrum. In the study of the electrochemical properties, various of triphenylamine derivaties have different oxygen binding site and they make elecropolymerization happen or not. In the applications of the hole-transport materials, the performance of compound 21 is better than other compounds. The electropolymerized-film may have residual cation molecules so they can increase the concentration of hole-transport. Due to this reason , compound 21 is suitable to become hole-transport materials.
在光学研究方面,由於目标化合物内单体的HOMO及LUMO能阶差异,使得在溶液萤光放射上有双发射及能量转移的情形发生;在电化学研究方面,不同的三苯胺衍生物由於氧基的位置不同,使得取代基在间位的化合物有不错的电聚合效果;而元件的应用上,具有咔唑基团的化合物21由於在形成电聚薄膜后,可能有残余的阳离子态化合物,使得电聚薄膜内的电洞数浓度较高,因此与其他元件相比之下,有较低的启动电压和不错的元件效率。
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For example, in the process of aeration or oxygen exposures, oxygen together with compounds in the sewage generates a different stench; Also, in the anaerobic process, in the role of microorganisms, sulfur from the sewage, reates hydrogen sulfide, mercaptans and sulfide compounds.
例如,在曝气或曝氧过程中,氧气可与污水中的化合物生成有异臭味的产物;又如,在厌氧过程中,污水中的硫在微生物的作用下,生成硫化氢、硫醇和硫醚等化合物。
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For metabolites of strain SIPI-800, three active compounds were found, named as SIPI-800-1, 2 and 3 respectively, moreover SIPI-800-1 was new compound showing immunosuppressant activity and moderate anti- anaerobic activity; 2 and 3 were isoflavones with estrogenic activity, attracting activity to fungal zoospores, inhibiting alcohol dehydrogenase and aldehyde dehydrogenase I activities.
对SIPI-800菌株的代谢产物研究,分离出3个活性化合物,分别命名为:SIPI-800-1、2和3,其中1化合物为文献没有报道的新化合物,具有免疫抑制活性(1ug/ml浓度抑制NK细胞88.9%的活性)和弱的抗厌氧菌活性;2和3为异黄酮化合物,分别为Daidzein和Genisten的7甲基化衍生物,具有雌激素活性、强吸引真菌游动孢子、抑制乙醇或醛脱氢酶等活性。
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Reactive flux also provide a nearly disoxygen environment which is good for the synthesis of group-5-metal sulfides and selenides.
但是第5族元素极易与氧结合而难以得到硫硒化合物,尤其是多元化合物,而反应性融盐法提供了一个近似绝氧的环境。
- 推荐网络例句
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She gently rebuff ed him, but agreed that they could be friends
她婉言拒绝了,但同意作为朋友相处。
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If in the penal farm, you were sure to be criticized.
要是在劳改农场,你等着挨绳子吧!
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Several theories about reigniting and extinguishing of the arc have been refered.
本文综合考虑了几种电弧重燃和熄灭理论。