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Relevant bibliographies by topics / Alkenes Benzene

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Academic literature on the topic 'Alkenes Benzene'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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Journal articles on the topic "Alkenes Benzene"

1

Zhang, Pengfei, and Zhenchu Chen. "Hypervalent Iodine in Synthesis 74: Synthesis and Reactivity of New Functionalised Alkenyliodonium Salts1." Journal of Chemical Research 2003, no. 9 (September 2003): 570–71. http://dx.doi.org/10.3184/030823403322597342.

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β-Amino substituted α,β-unsaturated ketones react with [hydroxy(tosyloxy)iodo]benzene to afford the corresponding alkenyl(phenyl)iodonium tosylates; these new α-acyl-β-aminoalkenyl(phenyl)iodonium tosylates offer an easy access to highly functionalised alkenes upon reaction with verious nucleophiles

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2

Rajapakse, Nimal, Brian R. James, and David Dolphin. "Alkyne and alkene complexes of (tetramesitylporphyrinato)ruthenium(II)." Canadian Journal of Chemistry 68, no. 12 (December 1, 1990): 2274–77. http://dx.doi.org/10.1139/v90-350.

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The reactions of benzene or toluene solutions of RuII(TMP), where TMP is the dianion of 5,10,15,20–tetramesitylporphyrin, with some acetylenes and alkenes are reported. Acetylene yields the isolable [Ru(TMP)]2(μ-C2H2) species; while with phenylacetylene or diphenylacetylene, 1:1 π-complexes are formed. The π-complexes Ru(TMP)(C2H4) and Ru(TMP)-(C2H4)(iPrOH)•iPrOH are isolated from reactions with ethylene, and a similar cyclohexene species is characterized insitu. The findings are relevant to O2-epoxidation of alkenes catalyzed by the trans-Ru(TMP)(O)2 complex. Keywords: ruthenium, porphyrin (tetramesityl), alkene complexes, alkyne complexes.

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3

Hoffmann, Norbert. "Photochemical Cycloaddition between Benzene Derivatives and Alkenes." Synthesis, no. 4 (2004): 481–95. http://dx.doi.org/10.1055/s-2004-815973.

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4

Huang, Jiuzhong, Wuxin Yan, Chaowei Tan, Wanqing Wu, and Huanfeng Jiang. "Palladium-catalyzed regioselective hydroboration of aryl alkenes with B2pin2." Chemical Communications 54, no. 14 (2018): 1770–73. http://dx.doi.org/10.1039/c7cc09432a.

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5

Meyer, Lars, Nacira Alouane, Kerstin Schmidt, and Paul Margaretha. "Photocycloaddition of cyclohex-2-enones to acrylonitrile." Canadian Journal of Chemistry 81, no. 6 (June 1, 2003): 417–22. http://dx.doi.org/10.1139/v03-016.

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The photocycloaddition of cyclohex-2-enones 1a, 1b, and 5a5c to acrylonitrile (2) in benzene has been studied. The reactions proceed with moderate regioselectivity and with preferential formation of diastereomeric mixtures of endo- and exo-5-oxobicyclo[4.2.0]octane-7-carbonitriles 3, 4, and 68. Very similar relative rates of conversion to products are observed in the photocycloadditions of 1b, 5a, and 5b to 2 and methacrylonitrile (9), respectively. In contrast, 5,5-dimethylcyclohex-2-enone (1b) forms cycloadducts with 2,3-dimethylbut-2-ene (12) as efficiently as with the unsaturated nitriles, but the 2,5,5-trialkylcyclohex-2-enones 5a and 5b do not react with this alkene at measurable rates of conversion. A dual path mechanism is presented that involves either exciplex formation between triplet-excited cyclohexenones and electron-rich alkenes or radical addition of the former to electron-deficient alkenes bearing a substituent, exercising a resonance effect.Key words: [2+2]-photocycloaddition, cyclobutane, cyclobutanecarbonitrile, radical addition to unsaturated nitriles.

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6

Lin, Zhiyang, Youxiang Jin, Weitao Hu, and Chuan Wang. "Nickel-catalyzed asymmetric reductive aryl-allylation of unactivated alkenes." Chemical Science 12, no. 19 (2021): 6712–18. http://dx.doi.org/10.1039/d1sc01115d.

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A nickel-catalyzed reductive asymmetric aryl-allylation of tethered unactivated alkenes has been developed, providing diverse benzene-annulated cyclic compounds bearing a quaternary stereocenter with high regio-, E/Z- and enantio-selectivity.

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7

Jin, Youxiang, and Chuan Wang. "Ni-catalysed reductive arylalkylation of unactivated alkenes." Chemical Science 10, no. 6 (2019): 1780–85. http://dx.doi.org/10.1039/c8sc04279a.

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8

Zhang, Zhipeng, Ying-jun Zhou, and Xiao-Wei Liang. "Total synthesis of natural products using photocycloaddition reactions of arenes." Organic & Biomolecular Chemistry 18, no. 29 (2020): 5558–66. http://dx.doi.org/10.1039/d0ob01204a.

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The photocycloaddition reaction of benzene with alkenes has become a significant approach for organic chemists and thus has been frequently utilized as a key step in the total synthesis of natural products.

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9

Trinh, Khang H., Son H. Doan, Tien V. Huynh, Phuong H. Tran, Diep N. Pham, Minh-Vien Le, Tung T. Nguyen, and Nam T. S. Phan. "Alternative pathways to α,β-unsaturated ketones via direct oxidative coupling transformation using Sr-doped LaCoO 3 perovskite catalyst." Royal Society Open Science 6, no. 11 (November 2019): 191313. http://dx.doi.org/10.1098/rsos.191313.

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A strontium-doped lanthanum cobaltite perovskite material was prepared, and used as a recyclable and effective heterogeneous catalyst for the direct oxidative coupling of alkenes with aromatic aldehydes to produce α,β-unsaturated ketones. The reaction afforded high yields in the presence of di- tert -butylperoxide as oxidant. Single oxides or salts of strontium, lanthanum and cobalt, and the undoped perovskite offered a lower catalytic activity than the strontium-doped perovskite. Benzaldehyde could be replaced by benzyl alcohol, dibenzyl ether, 2-oxo-2-phenylacetaldehyde, 2-bromoacetophenone or (dimethoxymethyl) benzene in the oxidative coupling reaction with alkenes. To our best knowledge, reactions between these starting materials with alkenes are new and unknown in the literature.

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Śliwak, Agata, Stanisław Gryglewicz, Józef Hoffmann, and Grażyna Gryglewicz. "Precursors of volatile organic compounds emitted during phosphorite processing." Polish Journal of Chemical Technology 14, no. 2 (January 1, 2012): 62–69. http://dx.doi.org/10.2478/v10026-012-0072-7.

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Precursors of volatile organic compounds emitted during phosphorite processing The composition of solvent-soluble organic matter of phosphorite, which is a precursor of volatile organic compounds emitted by the fertilizer industry, was studied. A benzene-methanol mixture and chloroform were used for the extraction of free and bound bitumen from phosphorites, respectively. The separated bitumen fractions were characterized qualitatively by GC-MS and quantitatively by GC-FID. n-Alkanes, n-alkenes, fatty acids and isoprenoids were identified in the extracts. The main components were n-alkanes and n-alkenes, constituting over 80% of the total bitumen determined. An unexpected presence of n-alkenes only in the free bitumen fraction was found. The possible source of ill-smelling substances evolved during treatment of phosphorite with H2SO4 was discussed.

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Dissertations / Theses on the topic "Alkenes Benzene"

1

Lundin, Angelica. "Quantum chemical studies of olefin epoxidation and benzyne biradicals /." Göteborg, Sweden : Göteborg University, Faculty of Science, 2007. http://www.loc.gov/catdir/toc/fy0801/2007440811.html.

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2

Ramalanjaona-Thiébaud, Mirana. "Organogenese de particules submicroniques de nickel et de palladium : proprietes catalytiques comparees et desactivation." Toulouse 3, 1988. http://www.theses.fr/1988TOU30082.

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Obtention de particules submicroniques (3 a 4nm) par reduction en milieu thf d'un halogenure de ni ou de pd par etmgbr. Etude de l'activite catalytique lors de l'hydrogenation en phase liquide de l'hexene-1, du cyclohexene, de l'hexyne-1 et -3 et du benzene

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3

De, Souza Roberto Fernando. "Etude des reactions d'oligomerisation, isomerisation et polymerisation de substrats insatures catalysees par des complexes allyle cationiques du nickel." Toulouse 3, 1987. http://www.theses.fr/1987TOU30152.

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Oligomerisation de l'ethylene. Mecanisme de l'isomerisation des olefines superieures en presence des complexes du titre. Polymerisation catalytique d'autres substrats insatures : styrene, dienes, alcynes. . . La polymerisation du phenylacetylene a ete etudiee en detail car elle conduit a des materiaux semiconducteurs a l'etat non dope

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Books on the topic "Alkenes Benzene"

1

Wiktelius, Daniel. Asymmetric synthesis of dipeptidomimetics and phosphine-boranes: Routes involving stereoselective olefination, expoxidation, and lipase-catalysed reactions. Göteborg: Göteborg University, 2007.

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2

Aleksandrovich, Dementʹev Vasiliĭ, Todorovskiĭ A. T, and Elʹi͡a︡shevich M. A. 1908-, eds. Interpretirovannye kolebatelʹnye spektry alkanov, alkenov i proizvodnykh benzola. Moskva: "Nauka", 1986.

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3

Lundin, Angelica. Quantum chemical studies of olefin epoxidation and benzyne biradicals. Göteborg, Sweden: Göteborg University, Faculty of Science, 2007.

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Book chapters on the topic "Alkenes Benzene"

1

"The structure and stability of benzene." In Alkenes and Aromatics, edited by Peter Taylor, 42–44. Cambridge: Royal Society of Chemistry, 2007. http://dx.doi.org/10.1039/9781847557827-00042.

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2

Hopkinson, M. N., and V. Gouverneur. "Oxidative Diamination of Alkenes Using (Diacetoxyiodo)benzene." In Compounds of Groups 12 and 11 (Zn, Cd, Hg, Cu, Ag, Au), 1. Georg Thieme Verlag KG, 2011. http://dx.doi.org/10.1055/sos-sd-103-00059.

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3

"Ortho Photocycloaddition of Alkenes and Alkynes to the Benzene Ring." In Understanding and Manipulating Excited-State Processes, 23–148. CRC Press, 2001. http://dx.doi.org/10.1201/9781482294637-8.

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4

Sivasanker, S., A. Thangaraj, R. A. Abdulla, and P. Ratnasamy. "Shape Selective Alkylation of Benzene With Long Chain Alkenes Over Zeolites." In Studies in Surface Science and Catalysis, 397–408. Elsevier, 1993. http://dx.doi.org/10.1016/s0167-2991(08)64026-4.

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5

Hopkinson, M. N., and V. Gouverneur. "Oxidative Aminooxygenation and Aminoamidation of Alkenes Using Selectfluor or (Diacetoxyiodo)benzene." In Compounds of Groups 12 and 11 (Zn, Cd, Hg, Cu, Ag, Au), 1. Georg Thieme Verlag KG, 2011. http://dx.doi.org/10.1055/sos-sd-103-00066.

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6

Taber, Douglass F. "Alkaloid Synthesis: (+)-Preussin (Britton), (±)-Xenovenine (Livinghouse), (+)-Subincanadine F (Li), (±)-Strychnine (Reissig),(-)-Virginiamycin M2 (Panek)." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0059.

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Aldehydes such as 1 are readily available by direct enantioselective chlorination. Robert Britton of Simon Fraser University found (Org. Lett. 2010, 12, 4034) that the addition of the kinetic ketone enolate 2 gave the anti aldol 3. Condensation of the chlorohydrin 3 with a primary amine led to the cyclic pyrrolinium salt, that was reduced with high diastereocontrol to (+)-preussin 4. Tom Livinghouse of Montana State University developed Sc catalysts for the cyclization of γ-amino terminal alkenes such as 5. In contrast, addition to internal alkenes was sluggish. He has now shown (Org. Lett. 2010, 12, 4271) that a thiophene substituent activated the internal alkene for addition, enabling the facile synthesis of (±)-xenovenine 7. Chaozhong Li of the Shanghai Institute of Organic Chemistry found (Chem. Commun. 2010, 46, 8436) that ferrocenium ion cleanly oxidized the enolate of the β-keto ester 8, effecting cyclization to 9. The D-tryptophan-derived ester that directed the relative and absolute configuration of the cyclization could readily by removed, delivering (+)-subincanadine F 10. In a complementary approach to indole alkaloid synthesis, Hans-Ulrich Reissig of the Freie Universität Berlin devised (Angew. Chem. Int. Ed. 2010, 49, 8021) the elegant SmI2 -mediated double cyclization of 11 to 12. This set the stage for the assembly of (±)-strychnine 13. James S. Panek of Boston University used (Angew. Chem. Int. Ed. 2010, 49, 6165) the enantiomerically pure allylic silanes that he has developed to construct the chloroaldehyde 14. He found that the reductive cyclization to 15 was best carried out with SmI2 in benzene. SmI2 has the virtue that it is soluble in common organic solvents, so it can readily be deployed even on a micromolar scale. It is also versatile, because its reducing power can be tuned by the solvent in which it is dissolved.

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7

Taber, Douglass. "Developments in Alkene Metathesis." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0027.

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Hervé Clavier and Steven P. Nolan, now at St. Andrew’s University, found (Adv. Synth. Cat. 2008, 350, 2959) that the indenylidene Ru complex 1 was an excellent pre-catalyst for alkene metathesis. A combination of 1 and the ligand 2 effected cross metathesis of 3 and 4 in just 15 minutes under microwave heating. Robert H. Grubbs of Caltech designed (Organic Lett. 2008, 10, 2693) the Ru catalyst 6 for the preparation of tri- and tetrasubstituted alkenes, as illustrated by the conversion of 7 to 8. The catalyst 6 also worked well for cross metathesis and ring opening metathesis polymerization (ROMP). For some biological applications, it would be desirable to run alkene cross metathesis under aqueous conditions. Benjamin G. Davis of the University of Oxford observed (J. Am. Chem. Soc. 2008, 130, 9642) that allyl sulfides such as 9 were unusually reactive in cross metathesis. Indeed, aqueous cross methathesis with such an allyl sulfide incorporated in a protein worked well, although added MgCl2 was required. The protein, a serine protease, maintained its activity after cross metathesis. α,β-Unsaturated thioesters such as 14 are excellent substrates for, inter alia, enantioselective Cu-catalyzed conjugate addition of Grignard reagents. Adriaan J. Minnaard and Ben L. Feringa of the University of Groningen found (J. Org. Chem. 2008, 73, 5651) that the thioacrylate 13 was an excellent substrate for cross methathesis, allowing ready preparation of 14 . Although alkene metathesis is often run in CH2Cl2 , benzene or toluene, these are not necessarily the optimal solvents. Siegfried Blechert of the TU Berlin established (Tetrahedron Lett. 2008, 49, 5968) that for the difficult cyclization of 16 to 17, hexafluorobenzene worked particularly well. The extended conformation (illustrated for 18) of an ester is more stable than the lactone conformation by about 5 kcal/mol. It is therefore not surprising that SonBinh T. Nguyen of Northwestern University observed (Organic Lett. 2008, 10, 5613) that attempted ring-closing metathesis of 18 gave only the dimer 20. On addition of the bulky Lewis acid 21, which can complex 18 in the lactone conformation, the reaction delivered the desired monomer 19. This should be a generally useful strategy for the cyclization of difficult ester substrates.

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8

Taber, Douglass F. "Substituted Benzenes: The Saikawa/Nakata Synthesis of Kendomycin." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0062.

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Jianbo Wang of Peking University described (Angew. Chem. Int. Ed. 2010, 49, 2028) the Au-promoted bromination of a benzene derivative such as 1 with N-bromosuccinimide. In a one-pot procedure, addition of a Cu catalyst followed by microwave heating delivered the aminated product 2. Jian-Ping Zou of Suzhou University and Wei Zhang of the University of Massachusetts, Boston, observed (Tetrahedron Lett. 2010, 51, 2639) that the phosphonylation of an arene 3 proceeded with substantial ortho selectivity. Yonghong Gu of the University of Science and Technology, Hefei, showed (Tetrahedron Lett. 2010, 51, 192) that an arylpropanoic acid 6 could be ortho hydroxylated with PIFA to give 7. Louis Fensterbank, Max Malacria, and Emmanuel Lacôte of UMPC Paris found (Angew. Chem. Int. Ed. 2010, 49, 2178) that a benzoic acid could be ortho aminated by way of the cyano amide 8. Daniel J. Weix of the University of Rochester developed (J. Am. Chem. Soc. 2010, 132, 920) a protocol for coupling an aryl iodide 10 with an alkyl iodide 11 to give 12. Professor Wang devised (Angew. Chem. Int. Ed. 2010, 49, 1139) a mechanistically intriguing alkyl carbonylation of an iodobenzene 10. This is presumably proceeding by way of the intermediate diazo alkane. Usually, benzonitriles are prepared by cyanation of the halo aromatic. Hideo Togo of Chiba University established (Synlett 2010, 1067) a protocol for the direct electrophilic cyanation of an electron-rich aromatic 15. Thomas E. Cole of San Diego State University observed (Tetrahedron Lett. 2010, 51, 3033) that an alkyl dimethyl borane, readily prepared by hydroboration of the alkene with BCl3 and Et3 SiH, reacted with benzoquinone 17 to give 18. Presumably this transformation could also be applied to substituted benzoquinones. When a highly substituted benzene derivative is needed, it is sometimes more economical to construct the aromatic ring. Joseph P. A. Harrity of the University of Sheffield and Gerhard Hilt of Philipps-Universität Marburg showed (J. Org. Chem. 2010, 75, 3893) that the Co-catalyzed Diels-Alder cyloaddition of alkynyl borinate 21 with a diene 20 proceeded with high regiocontrol, to give, after oxidation, the aryl borinate 22.

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9

Taber, Douglass F. "C–H Functionalization: The Snyder Synthesis of (+)-Scholarisine A." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0020.

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Thomas R. Hoye of the University of Minnesota devised (Nature 2013, 501, 531) the reagent 2, that cyclized to a benzyne that in turn dehydrogenated the alkane 1 to the alkene 3, and 4. Abigail G. Doyle of Princeton University developed (J. Am. Chem. Soc. 2013, 135, 12990) a reagent combination for the allylic fluorination of a terminal alkene 5 to the branched product 6. Yan Zhang and Jianbo Wang of Peking University oxidized (Angew. Chem. Int. Ed. 2013, 52, 10573) the methyl group of 7 to give the nitrile 8. Hanmin Huang of the Lanzhou Institute of Chemical Physics found (Org. Lett. 2013, 15, 3370) conditions for the carbonylation of the benzylic site of 9, leading to coupling with 10 to form the amide 11. Yu Rao of Tsinghua University effected (Angew. Chem. Int. Ed. 2013, 52, 13606) the direct methoxylation of 12, to give 13. Pd-mediated methoxylation had previously been described (Chem. Sci. 2013, 4, 4187) by Bing-Feng Shi of Zhejiang University. M. Christina White of the University of Illinois, Urbana found (J. Am. Chem. Soc. 2013, 135, 14052) that with variant ligands on the Fe catalyst, the oxidation of 14 could be directed selectively to either 15 or 16. C–H bonds can also be converted to C–N bonds. Sukbok Chang of KAIST oxidized (J. Am. Chem. Soc. 2013, 135, 12861) the unsaturated ester 17 with 18 to form the enamide 18. Gong Chen of Pennsylvania State University cyclized (Angew. Chem. Int. Ed. 2013, 52, 11124) the amide 20 to the γ-lactam 21. Professor Shi reported (Angew. Chem. Int. Ed. 2013, 52, 13588) a related approach to β-lactams. Ethers are easily oxidized. Taking advantage of this, Yun Liang of Hunan Normal University coupled (Synthesis 2013, 45, 3137) the bromoalkyne 23 with tetrahydrofuran 22 to give 24. Guangbin Dong of the University of Texas, Austin devised (J. Am. Chem. Soc. 2013, 135, 17747) a protocol for the β-arylation of ketones, including the preparation of 27 by the coupling of 25 with 26.

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10

Taber, Douglass F. "Substituted Benzenes: The Garg Synthesis of Tubingensin A." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0062.

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John F. Hartwig of the University of California, Berkeley devised (Science 2014, 343, 853) conditions for the regioselective silylation of an arene 1 to give 2. The silyl group can directly be converted, inter alia, to halo, amino, alkyl, or hydroxyl. Jin-Quan Yu of Scripps La Jolla effected (Angew. Chem. Int. Ed. 2014, 53, 2683) regioselective alkenylation of the arene 3 with 4 to give 5. Wei-Liang Duan of the Shanghai Institute of Organic Chemistry described (Org. Lett. 2014, 16, 500) a related alkenylation protocol. Deping Wang of Henyang Normal University developed (Eur. J. Org. Chem. 2014, 315) inexpensive conditions for the conversion of an aryl bromide 6 to the corresponding phenol 7. Mamoru Tobisu and Naoto Chatani of Osaka University used (J. Am. Chem. Soc. 2014, 136, 5587) a Ni catalyst to convert the lactam 8 to the aryl boronate 9. Patrick J. Walsh of the University of Pennsylvania found (Adv. Synth. Catal. 2014, 356, 165) conditions for the clean monoarylation of the amide 11 with 10 to give 12. In an application of the Catellani approach, Zhi- Yuan Chen of Jiangxi Normal University coupled (Chem. Eur. J. 2014, 20, 4237) the aryl iodide 13 with 14 to give the amino ester 15. Frederic Fabis of the Université de Caen-Basse-Normandie used (Chem. Eur. J. 2014, 20, 7507) Pd to catalyze the ortho halogenation (and alkoxylation) of the N-sulfonylamide 16 to give 17. Wen Wan of Shanghai University and Jian Hao of Shanghai University and the Shanghai Institute of Organic Chemistry effected (Chem. Commun. 2014, 50, 5733) ortho azidination of the aniline 18 with 19, leading to 20. Jianbo Wang of Peking University found (Angew. Chem. Int. Ed. 2014, 53, 1364) that the N-aryloxy amide 21 could be combined with the α-diazo ester 22 to give the ortho-alkenyl phenol 23. Silas P. Cook of Indiana University uncovered (Org. Lett. 2014, 16, 2026) remarkably simple conditions for the enantiospecific cyclization of 24 (65% ee) to 25 (63% ee). The development of arynes as reactive intermediates continues unabated. Xiaoming Zeng of Xi’an Jiaotong University developed (Org. Lett. 2014, 16, 314) the reagent 27 for the bis-functionalization of the aryne derived from 26.

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Conference papers on the topic "Alkenes Benzene"

1

Altaher, Mohamed A., Hu Li, Simon Blakey, and Winson Chung. "NMHC and VOC Speciation of the Exhaust Gas From a Gas Turbine Engine Using Alternative, Renewable and Conventional Jet A-1 Aviation Fuels." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25445.

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This paper investigated the emissions of individual unburned hydrocarbons and carbonyl compounds from the exhaust gas of an APU (Auxiliary Power Unit) gas turbine engine burning various fuels. The engine was a single spool, two stages of turbines and one stage of centrifugal compressor gas turbine engine, and operated at idle and full power respectively. Four alternative aviation fuel blends with Jet A-1 were tested including GTL, hydrogenated renewable jet fuel and fatty acid ester. C2-C4 alkenes, benzene, toluene, xylene, trimethylbenzene, naphthalene, formaldehyde, acetaldehyde and acrolein emissions were measured. The results show at the full power condition, the concentrations for all hydrocarbons were very low (near or below the instrument detection limits). Formaldehyde was a major aldehyde species emitted with a fraction of around 60% of total measured aldehydes emissions. Formaldehydes emissions were reduced for all fuels compared to Jet A-1 especially at the idle conditions. There were no differences in acetaldehydes and acrolein emissions for all fuels; however, there was a noticeable reduction with GTL fuel. The aromatic hydrocarbon emissions including benzene and toluene are decreased for the alternative and renewable fuels.

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