Kliknij ten link, aby zobaczyć inne rodzaje publikacji na ten temat: Difunctionnalization of internal olefins.

Artykuły w czasopismach na temat „Difunctionnalization of internal olefins”

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Sprawdź 50 najlepszych artykułów w czasopismach naukowych na temat „Difunctionnalization of internal olefins”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Przeglądaj artykuły w czasopismach z różnych dziedzin i twórz odpowiednie bibliografie.

1

Seayad, A. "Internal Olefins to Linear Amines". Science 297, nr 5587 (6.09.2002): 1676–78. http://dx.doi.org/10.1126/science.1074801.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
2

Brändli, Christof, i Thomas R Ward. "Librariesvia Metathesis of Internal Olefins". Helvetica Chimica Acta 81, nr 9 (9.09.1998): 1616–21. http://dx.doi.org/10.1002/(sici)1522-2675(19980909)81:9<1616::aid-hlca1616>3.0.co;2-p.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
3

Maity, Soham, Pravas Dolui, Rajesh Kancherla i Debabrata Maiti. "Introducing unactivated acyclic internal aliphatic olefins into a cobalt catalyzed allylic selective dehydrogenative Heck reaction". Chemical Science 8, nr 7 (2017): 5181–85. http://dx.doi.org/10.1039/c7sc01204g.

Pełny tekst źródła
Streszczenie:
A highly regio- and stereoselective cobalt catalyzed allylic selective dehydrogenative Heck reaction with internal aliphatic olefins was developed. Both internal and terminal aliphatic olefins can be employed, thereby significantly expanding the scope of alkenylation chemistry.
Style APA, Harvard, Vancouver, ISO itp.
4

Weliange, Nandita M., David S. McGuinness, Michael G. Gardiner i Jim Patel. "Insertion, elimination and isomerisation of olefins at alkylaluminium hydride: an experimental and theoretical study". Dalton Transactions 44, nr 34 (2015): 15286–96. http://dx.doi.org/10.1039/c5dt00955c.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
5

Roberts, D., i D. Williams. "Why Internal Olefins are difficult to Sulphonate". Tenside Surfactants Detergents 22, nr 4 (1.07.1985): 193–95. http://dx.doi.org/10.1515/tsd-1985-220408.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
6

Wu, Ping, Fei Huang, Jiang Lou, Quannan Wang, Zhuqing Liu i Zhengkun Yu. "Brønsted acid-catalyzed phenylselenenylation of internal olefins". Tetrahedron Letters 56, nr 19 (maj 2015): 2488–91. http://dx.doi.org/10.1016/j.tetlet.2015.03.096.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Yoshimura, Haruo, Yoshihisa Endo i Shigeru Hashimoto. "NMR study on sulfonation of internal olefins". Journal of the American Oil Chemists Society 68, nr 8 (sierpień 1991): 623–28. http://dx.doi.org/10.1007/bf02660166.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
8

Ternel, Jérémy, Bastien Léger, Eric Monflier i Frédéric Hapiot. "Amines as effective ligands in iridium-catalyzed decarbonylative dehydration of biosourced substrates". Catalysis Science & Technology 8, nr 15 (2018): 3948–53. http://dx.doi.org/10.1039/c8cy00621k.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
9

Zhu, Cheng-Liang, Jun-Shan Tian, Zhen-Yuan Gu, Guo-Wen Xing i Hao Xu. "Iron(ii)-catalyzed asymmetric intramolecular olefin aminochlorination using chloride ion". Chemical Science 6, nr 5 (2015): 3044–50. http://dx.doi.org/10.1039/c5sc00221d.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
10

Wen, Jiangwei, Longfei Zhang, Xiaoting Yang, Cong Niu, Shuangfeng Wang, Wei Wei, Xuejun Sun, Jianjing Yang i Hua Wang. "H2O-controlled selective thiocyanation and alkenylation of ketene dithioacetals under electrochemical oxidation". Green Chemistry 21, nr 13 (2019): 3597–601. http://dx.doi.org/10.1039/c9gc01351b.

Pełny tekst źródła
Streszczenie:
Efficient and H2O-controlled selective thiocyanation and alkenylation of internal olefins, to afford tetrasubstituted olefins under electrochemical oxidation, has been successfully developed.
Style APA, Harvard, Vancouver, ISO itp.
11

Chevella, Durgaiah, Arun Kumar Macharla, Srujana Kodumuri, Rammurthy Banothu, Krishna Sai Gajula, Vasu Amrutham, Grigor'eva Nellya Gennadievna i Narender Nama. "Synthesis of internal olefins by direct coupling of alcohols and olefins over Moβ zeolite". Catalysis Communications 123 (kwiecień 2019): 114–18. http://dx.doi.org/10.1016/j.catcom.2019.01.027.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
12

BRAENDLI, C., i T. R. WARD. "ChemInform Abstract: Libraries via Metathesis of Internal Olefins." ChemInform 29, nr 51 (18.06.2010): no. http://dx.doi.org/10.1002/chin.199851051.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
13

Nelson, Taylor A. F., i Simon B. Blakey. "Intermolecular Allylic C−H Etherification of Internal Olefins". Angewandte Chemie 130, nr 45 (15.10.2018): 15127–31. http://dx.doi.org/10.1002/ange.201809863.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
14

Nelson, Taylor A. F., i Simon B. Blakey. "Intermolecular Allylic C−H Etherification of Internal Olefins". Angewandte Chemie International Edition 57, nr 45 (15.10.2018): 14911–15. http://dx.doi.org/10.1002/anie.201809863.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
15

Ma, Wangjing, Xiao TC, Liu BN, Xu ZC, Jin ZQ i Gong QT. "12-Tungstophosphate Acids: An Efficient, Green and Recyclable Photocatalyst in Carbon-Carbon Double Bond Isomerization on Linear Alpha Olefins". Journal of Biomedical Research & Environmental Sciences 2, nr 11 (grudzień 2021): 1170–75. http://dx.doi.org/10.37871/jbres1367.

Pełny tekst źródła
Streszczenie:
The accelerated UV visible photocatalytic carbon-carbon double bond isomerization of Linear Alpha Olefins (LAO) with 12-Tungstophosphate Acids (12-TPA) as an efficient, environmentally-friendly and recyclable catalyst was described, which produced the corresponding Linear Internal Olefins (LIO) in general high selectivity and high yields.
Style APA, Harvard, Vancouver, ISO itp.
16

Miller, D. G., i D. D. M. Wayner. "Electrode-mediated Wacker oxidation of cyclic and internal olefins". Canadian Journal of Chemistry 70, nr 9 (1.09.1992): 2485–90. http://dx.doi.org/10.1139/v92-314.

Pełny tekst źródła
Streszczenie:
An improved method for the electrode-mediated oxidations of olefins by palladium(II) is described. Current efficiencies from 80% to 95% were obtained in oxidations of 1-decene, styrene, trans-2-octene, and cyclohexene in which perchloric acid was added to a chloride-free solution of a palladium(II) acetate catalyst. The palladium(0) was reoxidized to palladium(II) by reaction with catalytic amounts of benzoquinone, which was, in turn, regenerated by anodic oxidation. Addition of varying amounts of perchloric acid did not affect the current efficiency but accelerated the oxidation reaction, up to a concentration of approximately 0.15 M. The current efficiency remained high (>80%) over the course of the electrode-mediated oxidations of 1-decene, trans-2-octene, and cyclohexene. At the end of the reactions, when the substrate was depleted, a drastic decrease in the current was observed, indicating that the catalytic cycle leading to product was primarily responsible for the electrochemical reaction. It also was shown that the rates of the electrochemical reactions were generally slower than those of homogeneous reactions in which a stoichiometric amount of benzoquinone was used, indicating that the electrochemical regeneration of benzoquinone was mass transport limited at the highest concentrations of perchloric acid. This is in contrast to other reports in the literature that suggested that the homogeneous (non-electrochemical) reactions were actually slower. Reasons for the discrepancy between these results are discussed.
Style APA, Harvard, Vancouver, ISO itp.
17

Beller, Matthias, i Jürgen G. E. Krauter. "Cobalt-catalyzed biphasic hydroformylation of internal short chain olefins". Journal of Molecular Catalysis A: Chemical 143, nr 1-3 (lipiec 1999): 31–39. http://dx.doi.org/10.1016/s1381-1169(98)00360-4.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
18

Deng, Chao, Hua-Kui Liu, Zhong-Bo Zheng, Lijia Wang, Xiang Yu, Weihua Zhang i Yong Tang. "Copper-Catalyzed Enantioselective Cyclopropanation of Internal Olefins with Diazomalonates". Organic Letters 19, nr 21 (24.10.2017): 5717–19. http://dx.doi.org/10.1021/acs.orglett.7b02694.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
19

Klein, Holger, Ralf Jackstell i Matthias Beller. "Synthesis of linear aldehydes from internal olefins in water". Chemical Communications, nr 17 (2005): 2283. http://dx.doi.org/10.1039/b418350a.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
20

Wu, Ping, Fei Huang, Jiang Lou, Quannan Wang, Zhuqing Liu i Zhengkun Yu. "ChemInform Abstract: Broensted Acid-Catalyzed Phenylselenenylation of Internal Olefins." ChemInform 46, nr 34 (sierpień 2015): no. http://dx.doi.org/10.1002/chin.201534227.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
21

de Klerk, Arno, Siphamandla W. Hadebe, Jude R. Govender, Deo Jaganyi, Andile B. Mzinyati, Ross S. Robinson i Nontokozo Xaba. "Linear α-Olefins from Linear Internal Olefins by a Boron-Based Continuous Double-Bond Isomerization Process". Industrial & Engineering Chemistry Research 46, nr 2 (styczeń 2007): 400–410. http://dx.doi.org/10.1021/ie060476c.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
22

Weliange, Nandita M., David S. McGuinness, Michael G. Gardiner i Jim Patel. "Cobalt-bis(imino)pyridine complexes as catalysts for hydroalumination–isomerisation of internal olefins". Dalton Transactions 45, nr 26 (2016): 10842–49. http://dx.doi.org/10.1039/c6dt01113f.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
23

Zhang, Zongpeng, Caiyou Chen, Qian Wang, Zhengyu Han, Xiu-Qin Dong i Xumu Zhang. "New tetraphosphite ligands for regioselective linear hydroformylation of terminal and internal olefins". RSC Advances 6, nr 18 (2016): 14559–62. http://dx.doi.org/10.1039/c5ra23683e.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
24

Chen, Caiyou, Pan Li, Zhoumi Hu, Heng Wang, Huaisu Zhu, Xinquan Hu, Yan Wang, Hui Lv i Xumu Zhang. "Synthesis and application of a new triphosphorus ligand for regioselective linear hydroformylation: a potential way for the stepwise replacement of PPh3 for industrial use". Org. Chem. Front. 1, nr 8 (2014): 947–51. http://dx.doi.org/10.1039/c4qo00132j.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
25

Liu, Zhuqing, Fei Huang, Jiang Lou, Quannan Wang i Zhengkun Yu. "Copper-promoted direct C–H alkoxylation of S,S-functionalized internal olefins with alcohols". Organic & Biomolecular Chemistry 15, nr 26 (2017): 5535–40. http://dx.doi.org/10.1039/c7ob01234a.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
26

Żak, P., M. Bołt, M. Kubicki i C. Pietraszuk. "Highly selective hydrosilylation of olefins and acetylenes by platinum(0) complexes bearing bulky N-heterocyclic carbene ligands". Dalton Transactions 47, nr 6 (2018): 1903–10. http://dx.doi.org/10.1039/c7dt04392a.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
27

Yang, Yang, Shi-Liang Shi, Dawen Niu, Peng Liu i Stephen L. Buchwald. "Catalytic asymmetric hydroamination of unactivated internal olefins to aliphatic amines". Science 349, nr 6243 (2.07.2015): 62–66. http://dx.doi.org/10.1126/science.aab3753.

Pełny tekst źródła
Streszczenie:
Catalytic assembly of enantiopure aliphatic amines from abundant and readily available precursors has long been recognized as a paramount challenge in synthetic chemistry. Here, we describe a mild and general copper-catalyzed hydroamination that effectively converts unactivated internal olefins—an important yet unexploited class of abundant feedstock chemicals—into highly enantioenriched α-branched amines (≥96% enantiomeric excess) featuring two minimally differentiated aliphatic substituents. This method provides a powerful means to access a broad range of advanced, highly functionalized enantioenriched amines of interest in pharmaceutical research and other areas.
Style APA, Harvard, Vancouver, ISO itp.
28

Nakashima, Yusei, Goki Hirata, Tom D. Sheppard i Takashi Nishikata. "The Mizoroki‐Heck Reaction with Internal Olefins: Reactivities and Stereoselectivities". Asian Journal of Organic Chemistry 9, nr 4 (14.02.2020): 480–91. http://dx.doi.org/10.1002/ajoc.201900741.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
29

She, Yuan, Shuyu Zhang i Le Wang. "Advances in Selective Allylic C—H Amination of Internal Olefins". Chinese Journal of Organic Chemistry 45, nr 2 (2025): 531. https://doi.org/10.6023/cjoc202407007.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
30

Mola, Laura, Mireia Sidera i Stephen P. Fletcher. "Asymmetric Remote C–H Functionalization: Use of Internal Olefins in Tandem Hydrometallation–Isomerization–Asymmetric Conjugate Addition Sequences". Australian Journal of Chemistry 68, nr 3 (2015): 401. http://dx.doi.org/10.1071/ch14556.

Pełny tekst źródła
Streszczenie:
We describe catalytic asymmetric C–C formation using terminal alkyl-metal nucleophiles generated from internal olefins through a ‘chain-walking’ isomerization mechanism. Hydrometallation of internal olefins with the Schwartz reagent gives the least hindered alkyl-zirconocene after thermal (60°C in THF) isomerization. After switching the solvent from THF to dichloromethane, the alkyl-zirconocenes can be used in copper-catalyzed asymmetric conjugate additions. Addition to a variety of cyclic α,β-unsaturated species were achieved in modest (22–50 %) yield with high (84–92 % ee) enantioselectivity. This work demonstrates that remote C–H functionalization coupled with asymmetric C–C bond formation is possible, but the present procedures are limited in terms of yield and olefin scope.
Style APA, Harvard, Vancouver, ISO itp.
31

Wang, Xing, Junfeng Qian, Zhonghua Sun, Zhihui Zhang i Mingyang He. "Synthesis, characterization, and functional evaluation of branched dodecyl phenol polyoxyethylene ethers: a novel class of surfactants with excellent wetting properties". RSC Advances 11, nr 60 (2021): 38054–59. http://dx.doi.org/10.1039/d1ra06873c.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
32

Weliange, Nandita M., David S. McGuinness, Michael G. Gardiner i Jim Patel. "Insertion and isomerisation of internal olefins at alkylaluminium hydride: catalysis with zirconocene dichloride". Dalton Transactions 44, nr 46 (2015): 20098–107. http://dx.doi.org/10.1039/c5dt03257a.

Pełny tekst źródła
Streszczenie:
The insertion of internal olefins and chain walking isomerisation at di-n-octylaluminium hydride [Al(Oct)2H], promoted by zirconocene dichloride [Cp2ZrCl2] has been studied.
Style APA, Harvard, Vancouver, ISO itp.
33

Song, Lijuan, Qiang Feng, Yong Wang, Shengtao Ding, Yun-Dong Wu, Xinhao Zhang, Lung Wa Chung i Jianwei Sun. "Ru-Catalyzed Migratory Geminal Semihydrogenation of Internal Alkynes to Terminal Olefins". Journal of the American Chemical Society 141, nr 43 (9.10.2019): 17441–51. http://dx.doi.org/10.1021/jacs.9b09658.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
34

Yan, Yongjun, Xiaowei Zhang i Xumu Zhang. "A Tetraphosphorus Ligand for Highly Regioselective Isomerization−Hydroformylation of Internal Olefins". Journal of the American Chemical Society 128, nr 50 (grudzień 2006): 16058–61. http://dx.doi.org/10.1021/ja0622249.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
35

Miller, D. G., i Danial D. M. Wayner. "Improved method for the Wacker oxidation of cyclic and internal olefins". Journal of Organic Chemistry 55, nr 9 (kwiecień 1990): 2924–27. http://dx.doi.org/10.1021/jo00296a067.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
36

MILLER, D. G., i D. D. M. WAYNER. "ChemInform Abstract: Electrode-Mediated Wacker Oxidation of Cyclic and Internal Olefins." ChemInform 24, nr 14 (20.08.2010): no. http://dx.doi.org/10.1002/chin.199314098.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
37

Morandi, Bill, Zachary K. Wickens i Robert H. Grubbs. "Practical and General Palladium-Catalyzed Synthesis of Ketones from Internal Olefins". Angewandte Chemie 125, nr 10 (16.01.2013): 3016–20. http://dx.doi.org/10.1002/ange.201209541.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
38

Kumar, Ravi, Vikas Dwivedi i Maddi Sridhar Reddy. "Metal-Free Iodosulfonylation of Internal Alkynes: Stereodefined Access to Tetrasubstituted Olefins". Advanced Synthesis & Catalysis 359, nr 16 (10.08.2017): 2847–56. http://dx.doi.org/10.1002/adsc.201700576.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
39

van der Veen, Lars A., Paul C. J. Kamer i Piet W. N. M. van Leeuwen. "Hydroformylation of Internal Olefins to Linear Aldehydes with Novel Rhodium Catalysts". Angewandte Chemie International Edition 38, nr 3 (1.02.1999): 336–38. http://dx.doi.org/10.1002/(sici)1521-3773(19990201)38:3<336::aid-anie336>3.0.co;2-p.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
40

Morandi, Bill, Zachary K. Wickens i Robert H. Grubbs. "Practical and General Palladium-Catalyzed Synthesis of Ketones from Internal Olefins". Angewandte Chemie International Edition 52, nr 10 (16.01.2013): 2944–48. http://dx.doi.org/10.1002/anie.201209541.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
41

Hahn, Christine, Maria E. Cucciolito i Aldo Vitagliano. "Coordinated Olefins as Incipient Carbocations: Catalytic Codimerization of Ethylene and Internal Olefins by a Dicationic Pt(II)−Ethylene Complex". Journal of the American Chemical Society 124, nr 31 (sierpień 2002): 9038–39. http://dx.doi.org/10.1021/ja0263386.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
42

Scharnagl, Florian Korbinian, Maximilian Franz Hertrich, Francesco Ferretti, Carsten Kreyenschulte, Henrik Lund, Ralf Jackstell i Matthias Beller. "Hydrogenation of terminal and internal olefins using a biowaste-derived heterogeneous cobalt catalyst". Science Advances 4, nr 9 (wrzesień 2018): eaau1248. http://dx.doi.org/10.1126/sciadv.aau1248.

Pełny tekst źródła
Streszczenie:
Hydrogenation of olefins is achieved using biowaste-derived cobalt chitosan catalysts. Characterization of the optimal Co@Chitosan-700 by STEM (scanning transmission electron microscopy), EELS (electron energy loss spectroscopy), PXRD (powder x-ray diffraction), and elemental analysis revealed the formation of a distinctive magnetic composite material with high metallic Co content. The general performance of this catalyst is demonstrated in the hydrogenation of 50 olefins including terminal, internal, and functionalized derivatives, as well as renewables. Using this nonnoble metal composite, hydrogenation of terminal C==C double bonds occurs under very mild and benign conditions (water or methanol, 40° to 60°C). The utility of Co@Chitosan-700 is showcased for efficient hydrogenation of the industrially relevant examples diisobutene, fatty acids, and their triglycerides. Because of the magnetic behavior of this material and water as solvent, product separation and recycling of the catalyst are straightforward.
Style APA, Harvard, Vancouver, ISO itp.
43

Landge, Vinod G., Vinita Yadav, Murugan Subaramanian, Pragya Dangarh i Ekambaram Balaraman. "Nickel(ii)-catalyzed direct olefination of benzyl alcohols with sulfones with the liberation of H2". Chemical Communications 55, nr 43 (2019): 6130–33. http://dx.doi.org/10.1039/c9cc02603g.

Pełny tekst źródła
Streszczenie:
A nickel(ii)-catalyzed direct olefination of benzyl alcohols with sulfones to access various terminal and internal olefins with the liberation of hydrogen gas is reported. The present protocol has been used for E-selective synthesis of DMU-212, and Resveratrol.
Style APA, Harvard, Vancouver, ISO itp.
44

Liu, Bin, An Jie Wang i Chen Guang Liu. "Reactivity of Olefins and Thiophenes in Hydrodesulfurization of FCC Gasoline". Advanced Materials Research 881-883 (styczeń 2014): 271–78. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.271.

Pełny tekst źródła
Streszczenie:
The reactivity of olefins and S-compounds and their distributions in different catalyst-bed lengths were experimentally evaluated with a FCC gasoline in a high-pressure fixed-bed continuous flow pilot unit over the CoMoS/γ-Al2O3 catalyst. The evaluation results demonstrated that the increased steric hindrances around the double bond (C=C) and that to the thiophene molecules could suppress the hydrogenation of olefins and hydrodesulfurization (HDS) of S-compounds, respectively. Meanwhile, the reaction temperatures could influence the acidic property of the CoMoS active phase confirmed by FT-IR analysis, and thus induced the different reactions. It was found that the isomerization of terminal olefins to internal olefins was promoted by the Brønsted acid sites (-SH) at low temperatures, as well as the skeletal isomerization by the strong Lewis acid sites occurred to a minor extent at high temperatures. Besides, the distributions of olefins and S-compounds in different catalyst-bed lengths showed that the removal of S-compounds reached 80% of its maximum conversion at the first 40% of the reactor length, however, the saturation of olefins increased linearly as the reactor length increased. Therefore, a new catalyst-loading method was developed, i.e., the upper 40% of the reactor length filling with catalyst of high HDS activity and the bottom 60% with catalyst of low olefin saturation activity, respectively. The evaluation results showed that the graded catalyst loading process showed higher selectivity in HDS of FCC gasoline.
Style APA, Harvard, Vancouver, ISO itp.
45

Vicera, Clara, Raphael Dada i Rylan J. Lundgren. "Z-Selective Hydrofunctionalization of Dienes". Alberta Academic Review 2, nr 2 (23.09.2019): 77–78. http://dx.doi.org/10.29173/aar74.

Pełny tekst źródła
Streszczenie:
Olefins play a fundamental role in synthetic organic chemistry because they are useful building blocks that create molecules. However, geometry control (E- vs Z-) in olefin synthesis is of utmost importance because the olefin geometry has a tremendous impact on its physical, chemical and biological properties. Additionally, Z-olefins are less stable compared to their E-olefin counterparts; due to this difference, general methods to make olefins results in more cases of E-olefins production with relatively fewer Z-olefins caused by its instability. It has been reported that Z-olefins can be synthesized from dienes through a rhodium-catalyzed formate mediated transformation, with tolerance to several reducible functional groups. With this successful method in hand, the focus is to make functionalized Z-alkenes while still maintaining tolerance to reducible functional groups under mild reaction conditions. Thus, this project presents the production of Z-olefins through rhodium-catalyzed hydrofunctionalization using the starting materials, dienes and aldehydes. This method requires an inert atmosphere and the reaction progress can be monitored by Nuclear Magnetic Resonance (NMR) using an internal standard to quantify the amount of product formed. In this process, it was observed that the starting material was consumed until more than 95% conversion. In addition, the possibility of using different dienes, such as diene esters and phenyl dienes, as well as different aldehydes could further broaden the scope of this method. The usefulness of this process can be applied to the production of complex molecules. For example, in the synthesis of a glucagon receptor antagonist, which is a drug that is used in the treatment of diabetes. Currently, there is a limited number of methods used to create Z-olefins; however, this proven procedure can be further applied in other hydrofunctionalization
Style APA, Harvard, Vancouver, ISO itp.
46

Bagh, Bidraha, i Douglas W. Stephan. "Half sandwich ruthenium(ii) hydrides: hydrogenation of terminal, internal, cyclic and functionalized olefins". Dalton Trans. 43, nr 41 (2014): 15638–45. http://dx.doi.org/10.1039/c4dt02407a.

Pełny tekst źródła
Streszczenie:
Ruthenium(ii) complexes 2b–e with the general formula RuCl2(p-cymene)(NHC) were reacted with Et3SiH to generate a series of ruthenium(ii) hydrides 5b–e. These compounds 5b–e are effective catalysts for the hydrogenation of terminal, internal and cyclic and functionalized olefins.
Style APA, Harvard, Vancouver, ISO itp.
47

Song, Chuanling, Yihua Sun, Jianwu Wang, Hui Chen, Jiannian Yao, Chen-Ho Tung i Zhenghu Xu. "Successive Cu/Pd transmetalation relay catalysis in stereoselective synthesis of tetraarylethenes". Organic Chemistry Frontiers 2, nr 10 (2015): 1366–73. http://dx.doi.org/10.1039/c5qo00205b.

Pełny tekst źródła
Streszczenie:
A new and efficient strategy for the synthesis of tetraaryl-substituted olefins with two cis furans based on a Cu/Pd catalyzed oxidative coupling reaction of cyclopropene with internal alkyne was developed. These novel tetraarylethenes were fully characterized and proved to be good AIE luminogens.
Style APA, Harvard, Vancouver, ISO itp.
48

Jia, Xiaofei, Zheng Wang, Chungu Xia i Kuiling Ding. "Novel spiroketal-based diphosphite ligands for hydroformylation of terminal and internal olefins". Catalysis Science & Technology 3, nr 8 (2013): 1901. http://dx.doi.org/10.1039/c3cy00187c.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
49

Lu, Xiao-Yu, Jing-Song Li, Mei-Lan Hong, Jin-Yu Wang i Wen-Jing Ma. "Synthesis of trisubstituted olefins via nickel-catalyzed decarboxylative hydroalkylation of internal alkynes". Tetrahedron 74, nr 49 (grudzień 2018): 6979–84. http://dx.doi.org/10.1016/j.tet.2018.10.037.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
50

Alper, Howard, Krzysztof Januszkiewicz i David J. H. Smith. "Palladium chloride and polyethylene glycol promoted oxidation of terminal and internal olefins". Tetrahedron Letters 26, nr 19 (styczeń 1985): 2263–64. http://dx.doi.org/10.1016/s0040-4039(00)95069-x.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!

Do bibliografii