三烯烃
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The thermolysis of the isomerized products derived from norbornadiene-coordinated carbonyl iron complexes gave two sorts of the thermolytic products based on different substituents on the olefin ligands. One is the corresponding diiron dimer complex, and the other is the complex in which the C-C bond of the cycloolefin ligand is broken.
以降冰片二烯三羰基铁络合物衍生出来铁卡宾络合物的异构化产物的热解,随着烯烃配体上取代基的不同,而分别得到了络合物发生二聚和烯烃配体发生碳碳键断裂的两类热解产物。
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We have studied the transition metal complexes catalyzed sequential cross coupling reactions of these new difunctional group reagents with electrophiles and nucleophiles, respectively; developed some convenient and practical new methods for the stereoselective synthesis of disubstituted alkenes, trisubstituted alkenes, conjugated dienes containing heteroatom, conjugated enyne containing heteroatom etc., enriching methodologies for organic synthesis.
继而研究了这些新型双官能试剂在过渡金属配合物催化下分别与亲电试剂、亲核试剂的顺序交叉偶联反应,为双取代烯烃、三取代烯烃、杂原子取代的共轭二烯烃、杂原子取代的共轭烯炔烃等的立体选择合成提供了方便实用的新方法,丰富了烯烃立体选择合成的方法学。
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Through mechanism analyzing on the process of producing HMT , it was known that because the resistance of isobutylene was small ,the yield of outgrowth in such a reaction system was little and the yield of reaction was as high as 86%. 2,3-dimethyI-butene-2 had the biggest resistance and lowest yield of reaction of 18%. 2,3-dimethyl-butene-l had bigger resistance than isobutylene and more outgrowth than isobutyles but its yield of reaction could reach 70%.
通过对上述三种烯烃合成HMT的研究可知,由于新己烯位阻小,反应中副反应少,收率高达86%:而2,3—二甲基—丁烯—2的位阻最大,反应中副反应最多,反应收率最高仅为18%;2,3—二甲基—丁烯—1的位阻比新己烯大,反应副产物比新己烯多,但反应收率仍可达70%。
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In addition nC〓, nC〓, two isomers of C〓 sterene and three isomers of C〓 isoprenoid hydrocarbons were also identified from aliphatic fraction of pyrolyzed product at 200℃. After pyrolyzed at 300℃, the main aliphatic hydrocarbons were normal alkanes ranged from C〓 to C〓, with C〓 as the main peak and C〓 as the second main peak. Meanwhile, pristane, phytane and C〓 sterane were also detected. In the pyrolysates at 400℃ and 500℃, the content of saturated hydrocarbons decreased, the range of normal alkanes distribution became narrow and the main peak was nC〓. Low concentration of C〓-C〓 steranes was detected and the content of C〓-C〓 increased more.
在200℃热模拟产物饱和烃馏分中除检测出两种长链烯烃外,还检测到正十九碳单烯烃、正三十五碳双烯烃、两个碳二十八甾烯的同分异构体和三个C〓类异戊二烯烷烃化合物同分异构体。300℃模拟产物饱和烃主要为正烷烃,正烷烃的碳数分布范围为C〓-C〓,以C〓为主峰、C〓为次主峰;另外,样品中还检出姥鲛烷、植烷和C〓甾烷等化合物。400和500℃热模拟产物中的饱和烃含量下降,正烷烃系列碳数分布范围变窄,主峰碳后移至C〓,检测到低浓度的C〓-C〓甾烷系列化合物,另外,C〓-C〓藿烷系列化合物含量进一步增加。
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In part one, the reactions of some active fluorine-containing compounds such as 2, 2-dihydropolyfluoroalkanoic acids and ethyl 2-hydropolyfluoroalkenoates were studied and various fluorine-containing heterocyclic compounds were synthesized. Using 2, 2-dihydropolyfluoroalkanoic acids as the starting material, 4-fluoroalkyl quinolin-2-ols, 2- [ -1-hydropolyfluoro-1-alkenyl] -4H-3, 1-benzoxazin-4-ones, 1-aryl -4, 9-dihydro-3-fluoro-alkyl-1H-pyrazo [3, 4-b] quinolin-4-ones, 5-fluoroalkyl-12H-quin olino [2, 1-b] quinazolin-12-ones, 4-fluoroalkyl-1, 3-dihydro-1, 5-benzodiazepin-2-ones and 4-fluoroalkyl-2H-pyrido [1, 2-a] pyrimidin-2-ones were synthesized through its condensation reaction with anilines, anthranilic acid, N'-aryl-o-aminobenzamides, o-nitro aniline, o-amino pyridine and their derivatives and the subsequent transformations. 5-Fluoroalkyl isoxazolidines, 3-fluoro-3-fluoroalkylisoxazolidino [4, 3-c] quinolin-4-ones, 3-fluoroalkylisoxazolino [4, 3-c] quinolin-4-ones and 2-aryl-3per fluoroacylindoles were synthesized by inter-and intramolecular 1, 3-dipolar cycloaddition of fluorine-containing olefins and nitrones.
第二部分,我们研究了α,α-二氟苄基卤类化合物的亚磺化脱卤反应、产物的转化及全氟烷基亚磺酸盐与芳环化合物的全氟烷基化反应,发现全氟苄基碘或溴及α,α一二氟苄基溴在保险粉等亚磺化脱卤试剂引发下可生成相应的亚磺酸盐;全氟苄基亚磺酸盐与氯气或溴反应可生成全氟苄基磺酰氯或磺酰溴;在烯烃存在下,全氟苄基碘则与烯烃发生加成反应,生成相应的1:1加成产物;在三价醋酸锰的作用下,部分芳香化合物如茴香醚,二甲氧基苯,吡啶,喹啉等可以和过量的全氟烷基亚磺酸盐发生双全氟烷基化反应,反应表现出一定的区域选择性,产率良好。
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The results show that isobutene oligomerization is fast liquid-solid reaction. Under the temperature of 80 ℃~120 ℃ and pressure of 2.0 MPa, the products of oligomerization are mainly dimers and trimers of isobutene. The yield of trimers is higher than that of dimers and the mass fraction of trimers decreases with reaction temperature increasing. The yield of tetramers is much lower than that of dimmers and trimers. The tetramers are formed by reaction of isooctenes and C8 carbonium ion.
结果表明,异丁烯齐聚反应为快速液固相催化反应,在80 ℃~120 ℃,2.0 MPa的实验条件下,反应产物主要是异丁烯的二聚物和三聚物,且三聚物的收率远高于二聚物,两者的浓度比值随反应温度的升高而下降;少量四聚物的生成主要源于碳八烯烃与碳八正碳离子的反应。
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Methodologies for stereoselective synthesis of alkenes are of great interest in synthetic organic chemistry since many biologically active compounds occuring in nature possess the structural skeleton of disubstituted or trisubstituted alkenes.
烯烃的立体选择合成方法学研究是有机合成化学中的重要课题,因为许多重要的天然产物中均含有双取代或三取代烯烃的结构单元。
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Molybdophopsphoric Acid Catalysis in the Oxidative Cleavage of Olefins by the Hydrogen Peroxide Oxidative cleavage of the double bond could be catalyzed by H_3PMo_(12)O_(40) using H_2O_2 as oxidant, various trisubstituted olefins were oxidized to aldehydes or ketones in high yields. The system was not satisfied for electron-deficient olefins such as trans-(2-nitrovinyl) benzol or chalcone. The reaction of aliphatic olefins did not occur under the same conditions.
二、磷钼酸催化过氧化氢对烯烃的氧化断裂反应用过氧化氢(30%)作为氧化剂,磷钼酸可以催化氧化碳碳双键的断裂反应,三取代的烯烃被氧化生成醛或酮,产率较高;此体系对于缺电子烯烃如查尔酮,不饱和硝基化合物的断裂反应效果较差,脂肪族烯烃在此体系下的氧化并不发生。
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We are interesting in the synthesis and the application of 1,2,3-triazoles inthis paper, which including the following:In the first chapter, we reviewed mainly the development of Huisgen\'s 1,3-dipolar[3+2]-cycloaddition from organoazides and alkynes or alkenes to synthize1,2,3-triazoles in recent years.
本论文针对1,2,3-三唑的合成和应用,主要包括以下方面:第一章对近几年来1,2,3-三唑合成研究进行了概述,总结了有机叠氮和炔烃、烯烃的1,3-偶极环加成反应以及其他方法合成三唑的进展。
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In this work, alpha-olefin (carbon number 14, 16, 18) were used as materials, the alpha-olefinsulfonates (AOS-h,AOS-14, AOS-16, AOS-18) were synthesized with applying gas SO_3 Film-Reactor,and its application properties in EOR were studied.
本文以直链α-烯烃为原料,采用气体三氧化硫膜式磺化合成了α-烯烃磺酸盐(AOS-h,AOS-14,AOS-16,AOS-18),并应用于三次采油工业中。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。