Academic literature on the topic 'Stereochemical mechanism'

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Journal articles on the topic "Stereochemical mechanism"

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Ojima, Iwao, and Zhaoda Zhang. "Mechanism of amidocarbonylation: a stereochemical approach." Organometallics 9, no. 12 (1990): 3122–27. http://dx.doi.org/10.1021/om00162a025.

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OJIMA, I., and Z. ZHANG. "ChemInform Abstract: Mechanism of Amidocarbonylation: A Stereochemical Approach." ChemInform 22, no. 13 (2010): no. http://dx.doi.org/10.1002/chin.199113126.

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Horwitz, Matthew A., Naoya Tanaka, Takuya Yokosaka, Daisuke Uraguchi, Jeffrey S. Johnson, and Takashi Ooi. "Enantioselective reductive multicomponent coupling reactions between isatins and aldehydes." Chemical Science 6, no. 11 (2015): 6086–90. http://dx.doi.org/10.1039/c5sc02170g.

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A reductive coupling of two different carbonyls via a polar two-electron reaction mechanism was developed and the stereochemical outcome of this multicomponent process is precisely controlled by a chiral triaminoiminophosphorane.
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Diebler, J., A. Spannenberg, and T. Werner. "Atom economical synthesis of di- and trithiocarbonates by the lithium tert-butoxide catalyzed addition of carbon disulfide to epoxides and thiiranes." Organic & Biomolecular Chemistry 14, no. 31 (2016): 7480–89. http://dx.doi.org/10.1039/c6ob01081d.

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The lithium tert-butoxide catalyzed addition of CS<sub>2</sub> to epoxides and thiiranes under mild conditions is reported. A mechanism has been proposed taking into account the regio- and stereochemical outcome of the reaction.
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Dimukhametov, Mudaris N., Evgenia V. Bayandina, Elena Yu Davydova, Aidar T. Gubaidullin, Igor A. Litvinov, and Vladimir A. Alfonsov. "A stereochemical approach to the Kabachnik–Fields reaction mechanism." Mendeleev Communications 13, no. 3 (2003): 150–51. http://dx.doi.org/10.1070/mc2003v013n03abeh001763.

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Citron, Christian A., Nelson L. Brock, Patrick Rabe, and Jeroen S. Dickschat. "The Stereochemical Course and Mechanism of the IspH Reaction." Angewandte Chemie International Edition 51, no. 17 (2012): 4053–57. http://dx.doi.org/10.1002/anie.201201110.

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Jackson, WR, MR Moffat, P. Perlmutter, and EE Tasdelen. "The Stereochemistry of Organometallic Compounds. XXXVIII. Regio- and Stereo-control in the Rhodium-Catalyzed Hydroformylation of Some Alkenyl Phosphites." Australian Journal of Chemistry 45, no. 5 (1992): 823. http://dx.doi.org/10.1071/ch9920823.

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Excellent regiocontrol is achieved in the rhodium-catalysed hydroformylation of some alkenyl phosphites, and good stereocontrol is obtained in the hydroformylation of some cyclohexenyl phosphites. The stereochemical results have implications for the mechanism of these rhodium-catalysed reactions.
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Nakamura, Kaoru, Yasushi Kawai, Takehiko Miyai, Sohichi Honda, Nobuyoshi Nakajima, and Atsuyoshi Ohno. "Stereochemical Control in Microbial Reduction. 18. Mechanism of Stereochemical Control in the Diastereoselective Reduction with Baker’s Yeast." Bulletin of the Chemical Society of Japan 64, no. 5 (1991): 1467–70. http://dx.doi.org/10.1246/bcsj.64.1467.

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Perutz, M. F., A. J. Wilkinson, M. Paoli, and G. G. Dodson. "THE STEREOCHEMICAL MECHANISM OF THE COOPERATIVE EFFECTS IN HEMOGLOBIN REVISITED." Annual Review of Biophysics and Biomolecular Structure 27, no. 1 (1998): 1–34. http://dx.doi.org/10.1146/annurev.biophys.27.1.1.

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Cao, Shuxia, and Yufen Zhao. "Progress in the Atherton-Todd reaction and its stereochemical mechanism." SCIENTIA SINICA Chimica 45, no. 3 (2015): 283–94. http://dx.doi.org/10.1360/n032014-00294.

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Dissertations / Theses on the topic "Stereochemical mechanism"

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Whyte, Sheena Malling. "Stereochemical aspects of the mechanism of inhibition of pyridoxal-5'-phosphate dependent enzymes." Thesis, University of Sussex, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263214.

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Yamamura, Masaomi. "Stereochemical Mechanisms of Norlignan Biosynthesis." Kyoto University, 2011. http://hdl.handle.net/2433/142576.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第16289号<br>農博第1889号<br>新制||農||992(附属図書館)<br>学位論文||H23||N4625(農学部図書室)<br>28898<br>京都大学大学院農学研究科応用生命科学専攻<br>(主査)教授 梅澤 俊明, 教授 矢﨑 一史, 教授 宮川 恒<br>学位規則第4条第1項該当
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Gregg, Ryan Alexander. "INVESTIGATIONS INTO THE STEREOCHEMICAL AND GLUTAMATERGIC MECHANISMS OF THE "BATH SALTS" SYNTHETIC CATHINONES MEPHEDRONE AND MDPV IN RATS." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/354278.

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Pharmacology<br>Ph.D.<br>Synthetic cathinones, commonly referred to as “bath salts”, are a subgroup of novel psychoactive substances that have seen a dramatic rise in abuse worldwide over the past decade. These compounds are synthesized by clandestine drug manufacturers using basic medicinal chemistry techniques, and marketed as “legal high” alternatives to illicit psychostimulants (ie. cocaine and MDMA). Two of the most common synthetic cathinones since the emergence of this class of drugs are 4-methylmethcathinone (mephedrone, MEPH) and 3,4-methylenedioxypyrovalerone (MDPV). The novelty of t
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Molin, João Paulo Dal. "O papel do código estereoquímico e das flutuações térmicas locais no processo de folding de proteínas." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/60/60136/tde-16032011-143419/.

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O problema do folding de proteínas tem sido investigado intensamente há mais de sessenta anos. Entretanto ainda não é encontrado na literatura um modelo que seja capaz de explicar plenamente qual é o mecanismo responsável pelo processo de folding. Neste contexto, a presente tese de doutorado é uma proposta minimalista para investigar o papel de um código estereoquímico, que é centrado no efeito hidrofóbico e nos vínculos estéricos dos aminoácidos (o modelo estereoquímico), no processo em pauta. Esse modelo quando combinado com um método para incluir a flutuação térmica local no sistema cadeia
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Baker, Perrin. "Investigating the Mechanisms and Specificities of BphI-BphJ, an Aldolase-Dehydrogenase Complex From Burkholderia xenovorans LB400." Thesis, 2012. http://hdl.handle.net/10214/3612.

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Microbial degradation of aromatic hydrocarbons is imperative for maintaining the global carbon cycle and removing potentially toxic aromatic xenobiotics. This thesis focuses on the characterization of a pyruvate-specific class II aldolase (BphI) and acetaldehyde dehydrogenase (BphJ), the final two enzymes of the bph meta-cleavage pathway in Burkholderia xenovorans LB400. This pathway is responsible for the degradation of the industrial pollutant polychlorinated biphenyls (PCB) and therefore mechanistic characterization of these enzymes can be applied to improve pollutant degradation. BphI cata
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Books on the topic "Stereochemical mechanism"

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Dryuk, V. G. Peroxide epoxidation of the alkenes: Mechanism, associative and stereochemical peculiarities. Simferopol, 2001.

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Book chapters on the topic "Stereochemical mechanism"

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Van, Khoi N., Louis C. Morrill, Andrew D. Smith, and Daniel Romo. "Catalytic Generation of Ammonium Enolates and Related Tertiary Amine-Derived Intermediates: Applications, Mechanism, and Stereochemical Models (n?→?π* )." In Lewis Base Catalysis in Organic Synthesis. Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527675142.ch13.

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Klebe, G. "Mechanisms of Stereoselective Binding to Functional Proteins." In Stereochemical Aspects of Drug Action and Disposition. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-55842-9_8.

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Mingos, D. M. P. "Stereochemical non-rigidity to synergic bonding." In Essentials of Inorganic Chemistry 2. Oxford University Press, 1998. http://dx.doi.org/10.1093/hesc/9780198559184.003.0011.

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This chapter begins by reviewing stereochemical non-rigidity. It notes that, in summary, five coordinate complexes are generally stereochemically non-rigid because there are two alternative coordination geometries with similar energies. The interconversion of these polyhedra provides a mechanism for permuting the symmetry inequivalent atoms. The chapter explains that this process is intramolecular, and it may be effectively studied by variable temperature nuclear magnetic resonance measurements if the frequency of permuting the inequivalent nuclei has the same order of magnitude as the differe
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Brabander, J. De, and M. Vandewalle,. "The Asymmetric Synthesis of Bryostatin Fragments." In Exercises in Synthetic Organic Chemistry. Oxford University PressOxford, 1997. http://dx.doi.org/10.1093/oso/9780198559443.003.0010.

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Abstract Discussion Points What is the purpose of the magnesium bromide etherate in step d? Propose an explanation for the observed stereochemical outcome of step g. Explain the role of the Seyferth reagent in the formation of product 6. What is the mechanism of this step?
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Keck, G. E., S. F. McHardy, and J. A. Murry,. "Total Synthesis of (+)-7-Deoxypancratistatin." In Exercises in Synthetic Organic Chemistry. Oxford University PressOxford, 1997. http://dx.doi.org/10.1093/oso/9780198559443.003.0060.

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Abstract Discussion Points What is the mechanism of step i? The stereochemical outcome of the radical cyclisation step o is highly dependent on the use of a cyclic precursor (e.g. 7). When acyclic compound 12 was submitted to the same reaction conditions as in o, it cyclised to give 13. Give reasons for this finding.
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Corey, E. J., and R. S. Kania,. "Total Synthesis of (+)-Dolabellatrienone." In Exercises in Synthetic Organic Chemistry. Oxford University PressOxford, 1997. http://dx.doi.org/10.1093/oso/9780198559443.003.0055.

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Abstract Discussion Points Suggest a synthesis of chloride 1 from (E,E)-farnesol? What is the mechanism of step i? Rationalise the stereochemical outcome in terms of the stereochemistry of the starting material 6 and the intermediates formed during the transformation. What symmetry does catalyst 7 possess? What reagents would usually be employed to effect the transformation of olefin 9 into 10 ?
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Hanessian, S., J. Y. Sanreau, and P. Chemla,. "Synthesis of a Structure Related to Hydantocidin." In Exercises in Synthetic Organic Chemistry. Oxford University PressOxford, 1997. http://dx.doi.org/10.1093/oso/9780198559443.003.0007.

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Abstract Discussion Points Propose a mechanism for step c with a rationalisation of the stereochemical outcome. What is the role of TBAF in step i? Further Reading For recent examples of the use of fluoride ion as a base, see: T. Sato and J. Otera, J. Org. Chem.,1995, 60,2627; see also: T. Sato and J. Otera, Synlett,1995, 845.
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Brown, D. S., and L. A. Paquette,. "Synthetic Studies on Furanoheliangolides." In Exercises in Synthetic Organic Chemistry. Oxford University PressOxford, 1997. http://dx.doi.org/10.1093/oso/9780198559443.003.0071.

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Abstract Discussion Points Suggest a mechanism for the formation of furan 2. Rationalise the stereochemical outcome of step f. The transformation 3 -&amp;gt; 6 involves the formal [4+2] cycloaddition of a ketene to the furan ring. Why are ketenes not usually employed directly for Diels-Alder reactions? Propose a suitable mechanism for the rearrangement of compound 14 to give the isomers 15 and 16. What role does the potassium carbonate play in the reaction? What product could be expected to be formed from the E-enol ether 17 under the conditions outlined in step r?
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Toyota, M., Y. Nishikawa, and K. Fukumoto,. "Formal Synthesis of (±)-Aphidicolin." In Exercises in Synthetic Organic Chemistry. Oxford University PressOxford, 1997. http://dx.doi.org/10.1093/oso/9780198559443.003.0062.

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Abstract Discussion Points The condensation step a gave a 3 : 1 mixture of isomers 2. Assuming that the stereoselectivity of the reaction can be rationalised by a Zimmerman-Traxler transition state model, what should be the structure of the predominant isomer? What is the mechanism of step b? The tetracyclic product 9 was obtained in a 3 : 1 mixture with its epimer at C5. What is the mechanism of this reaction? Rationalise the stereochemical outcome. Further Reading For a recent review of the Heck reaction see: W. Cabri and I. Candiani, Acc. Chem. Res.,1995, 28,2.
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Tanner, D., P. G. Andersson, L. Tedenborg, and P. Somfai,. "An Approach to Zoanthamine Alkaloids." In Exercises in Synthetic Organic Chemistry. Oxford University PressOxford, 1997. http://dx.doi.org/10.1093/oso/9780198559443.003.0026.

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Abstract Discussion Points What was the stereochemical outcome of the reduction step h? Propose a mechanism to explain the formation and stereochemistry of compound 7. What is the structure of the intermediate 6 formed prior to the rearrangement? Further Reading For a recent review of asymmetric and enantioselective epoxidations see: E. Hoeft, Topp. Curr. Chem.,1993, 63. For the application of the Johnson orthoester Claisen rearrangement to a similar system see: A. Srikrishna and R. Viswajanani, Tetrahedron Lett.,1996, 37,2863.
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Conference papers on the topic "Stereochemical mechanism"

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Guarrotxena, Nekane, Serge Agnel, Alain Toureille, and Gerard Sessler. "On the stereochemical nanostructure-based mechanisms of electrical behavior of polymer insulators." In 2010 IEEE International Symposium on Electrical Insulation (ISEI). IEEE, 2010. http://dx.doi.org/10.1109/elinsl.2010.5549534.

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