251
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Chawla R, Singh AK, Yadav LDS. Organocatalysis in synthesis and reactions of epoxides and aziridines. RSC Adv 2013. [DOI: 10.1039/c3ra00175j] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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252
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Xuan YN, Lin HS, Yan M. Highly efficient asymmetric synthesis of α,β-epoxy esters via one-pot organocatalytic epoxidation and oxidative esterification. Org Biomol Chem 2013; 11:1815-7. [DOI: 10.1039/c3ob00056g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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253
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Liu G, Zhang D, Li J, Xu G, Sun J. A highly enantioselective Darzens reaction between diazoacetamides and aldehydes catalyzed by a (+)-pinanediol–Ti(OiPr)4 system. Org Biomol Chem 2013; 11:900-4. [DOI: 10.1039/c2ob27179f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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254
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Meninno S, Lattanzi A. Asymmetric organocatalysis mediated by α,α-l-diaryl prolinols: recent advances. Chem Commun (Camb) 2013; 49:3821-32. [DOI: 10.1039/c3cc36928e] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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255
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In situ aldehyde generation for aldol addition reactions catalyzed by d-fructose-6-phosphate aldolase. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcatb.2012.02.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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256
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Shen J, Liu D, An Q, Liu Y, Zhang W. The Synthesis oftrans-Perhydroindolic Acids and their Application in Asymmetric Domino Reactions of Aldehyde Esters with β,γ-Unsaturated α-Keto Esters. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200456] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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257
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Kubo O, Canterbury DP, Micalizio GC. Synthesis of the C1-C26 hexacyclic subunit of pectenotoxin 2. Org Lett 2012; 14:5748-51. [PMID: 23101680 DOI: 10.1021/ol302751b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Synthesis of the C1-C26 hexacyclic subunit of pectenotoxin-2 (PTX-2) is described that features a stereoselective annulation to generate the C-ring by triple asymmetric Nozaki-Hiyama-Kishi coupling followed by oxidative cyclization. Preparation of the C1-C14 AB spriroketal-containing subunit employs a recently developed metallacycle-mediated reductive cross-coupling between a TMS-alkyne and a terminal alkene.
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Affiliation(s)
- Ozora Kubo
- Department of Chemistry, The Scripps Research Institute, Jupiter, Florida 33458, USA
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258
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Wang B, Miao CX, Wang SF, Kühn FE, Xia CG, Sun W. Non-heme manganese complexes of C1-symmetric N4 ligands: Synthesis, characterization and asymmetric epoxidations of α,β-enones. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.03.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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259
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Niwa T, Nakada M. A Non-Heme Iron(III) Complex with Porphyrin-like Properties That Catalyzes Asymmetric Epoxidation. J Am Chem Soc 2012; 134:13538-41. [DOI: 10.1021/ja304219s] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takashi Niwa
- Department of Chemistry and Biochemistry, School of
Advanced Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Masahisa Nakada
- Department of Chemistry and Biochemistry, School of
Advanced Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo, 169-8555, Japan
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260
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Page PCB, Bartlett CJ, Chan Y, Day D, Parker P, Buckley BR, Rassias GA, Slawin AMZ, Allin SM, Lacour J, Pinto A. Asymmetric epoxidation using iminium salt organocatalysts featuring dynamically controlled atropoisomerism. J Org Chem 2012; 77:6128-38. [PMID: 22708806 DOI: 10.1021/jo300915u] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Introduction of a pseudoaxial substituent at a stereogenic center adjacent to the nitrogen atom in binaphthyl- and biphenyl-derived azepinium salt organocatalysts affords improved enantioselectivities and yields in the epoxidation of unfunctionalized alkenes. In the biphenyl-derived catalysts, the atropoisomerism at the biphenyl axis is controlled by the interaction of this substituent with the chiral substituent at nitrogen.
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Affiliation(s)
- Philip C Bulman Page
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, UK.
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261
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Liao S, Čorić I, Wang Q, List B. Activation of H2O2 by Chiral Confined Brønsted Acids: A Highly Enantioselective Catalytic Sulfoxidation. J Am Chem Soc 2012; 134:10765-8. [DOI: 10.1021/ja3035637] [Citation(s) in RCA: 176] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Saihu Liao
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1,
45470 Mülheim an der Ruhr, Germany
| | - Ilija Čorić
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1,
45470 Mülheim an der Ruhr, Germany
| | - Qinggang Wang
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1,
45470 Mülheim an der Ruhr, Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1,
45470 Mülheim an der Ruhr, Germany
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262
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Catalytic Regioselective Epoxide Ring Opening with Phenol Using Homogeneous and Supported Analogues of Dimethylaminopyridine. Top Catal 2012. [DOI: 10.1007/s11244-012-9822-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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263
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Zhao QY, Huang L, Wei Y, Shi M. Catalytic Asymmetric Synthesis of 2-Alkyleneoxetanes through [2+2] Annulation of Allenoates with Trifluoromethyl Ketones. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200237] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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264
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Singh R, Vince R. 2-Azabicyclo[2.2.1]hept-5-en-3-one: Chemical Profile of a Versatile Synthetic Building Block and its Impact on the Development of Therapeutics. Chem Rev 2012; 112:4642-86. [DOI: 10.1021/cr2004822] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Rohit Singh
- Center for Drug Design, Academic Health Center, University of Minnesota, 516 Delaware Street Southeast,
Minneapolis, MN 55455, United States
| | - Robert Vince
- Center for Drug Design, Academic Health Center, University of Minnesota, 516 Delaware Street Southeast,
Minneapolis, MN 55455, United States
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265
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Russo A, De Fusco C, Lattanzi A. Organocatalytic Asymmetric Oxidations with Hydrogen Peroxide and Molecular Oxygen. ChemCatChem 2012. [DOI: 10.1002/cctc.201200139] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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266
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Recoverable MnIII(salen) supported on diamine modified zirconium poly(styrene-isopropenyl phosphonate)-phosphate as an efficient catalyst for epoxidation of unfunctionalized olefins. Sci China Chem 2012. [DOI: 10.1007/s11426-012-4600-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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267
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Hong X, Mellah M, Bordier F, Guillot R, Schulz E. Electrogenerated Polymers as Efficient and Robust Heterogeneous Catalysts for the Hydrolytic Kinetic Resolution of Terminal Epoxides. ChemCatChem 2012. [DOI: 10.1002/cctc.201200085] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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268
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Wang B, Wang S, Xia C, Sun W. Highly Enantioselective Epoxidation of Multisubstituted Enones Catalyzed by Non-Heme Iron Catalysts. Chemistry 2012; 18:7332-5. [DOI: 10.1002/chem.201200992] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Indexed: 11/05/2022]
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269
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Wang B, Miao C, Wang S, Xia C, Sun W. Manganese Catalysts withC1-Symmetric N4Ligand for Enantioselective Epoxidation of Olefins. Chemistry 2012; 18:6750-3. [DOI: 10.1002/chem.201103802] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2011] [Revised: 03/01/2012] [Indexed: 11/07/2022]
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270
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Russo A, Galdi G, Croce G, Lattanzi A. Highly Enantioselective Epoxidation Catalyzed by Cinchona Thioureas: Synthesis of Functionalized Terminal Epoxides Bearing a Quaternary Stereogenic Center. Chemistry 2012; 18:6152-7. [DOI: 10.1002/chem.201200500] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Indexed: 11/06/2022]
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271
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Olivares-Romero JL, Li Z, Yamamoto H. Hf(IV)-catalyzed enantioselective epoxidation of N-alkenyl sulfonamides and N-tosyl imines. J Am Chem Soc 2012; 134:5440-3. [PMID: 22420598 DOI: 10.1021/ja211880s] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Asymmetric epoxidation of allylic and homoallylic amine derivatives catalyzed by Hf(IV)-bishydroxamic acid complexes is described. Under similar conditions, aldimine and ketimine produced oxaziridines. The sulfonyl group is demonstrated to be an effective directing group for these transformations.
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272
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Arroyo Y, Sanz-Tejedor MA, Parra A, García Ruano JL. Asymmetric Nucleophilic Monofluorobenzylation of Carbonyl Compounds: Synthesis of Enantiopure vic-Fluorohydrins and α-Fluorobenzylketones. Chemistry 2012; 18:5314-8. [DOI: 10.1002/chem.201103919] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Indexed: 11/11/2022]
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273
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Schöberl C, Jäger V. 3- and 4-Uloses Derived from N-Acetyl-D-glucosamine: A Unique Pair of Complementary Organocatalysts for Asymmetric Epoxidation of Alkenes. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100735] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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274
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Romney DK, Miller SJ. A peptide-embedded trifluoromethyl ketone catalyst for enantioselective epoxidation. Org Lett 2012; 14:1138-41. [PMID: 22315978 DOI: 10.1021/ol3000712] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The development of peptide-based oxidation catalysts that use a transiently generated dioxirane as the chemically active species is reported. The active catalyst is a chiral trifluoromethyl ketone (Tfk) with a pendant carboxylic acid that can be readily incorporated into a peptide. These peptides were capable of epoxidizing alkenes in high yield (up to 89%) and enantiomeric ratios (er) ranging from 69.0:31.0 to 91.0:9.0, depending on the alkene substitution pattern.
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Affiliation(s)
- David K Romney
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, USA
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275
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Winter RT, Heuts DPHM, Rijpkema EMA, van Bloois E, Wijma HJ, Fraaije MW. Hot or not? Discovery and characterization of a thermostable alditol oxidase from Acidothermus cellulolyticus 11B. Appl Microbiol Biotechnol 2012; 95:389-403. [PMID: 22231860 PMCID: PMC3371188 DOI: 10.1007/s00253-011-3750-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Revised: 11/01/2011] [Accepted: 11/17/2011] [Indexed: 11/26/2022]
Abstract
We describe the discovery, isolation and characterization of a highly thermostable alditol oxidase from Acidothermus cellulolyticus 11B. This protein was identified by searching the genomes of known thermophiles for enzymes homologous to Streptomyces coelicolor A3(2) alditol oxidase (AldO). A gene (sharing 48% protein sequence identity to AldO) was identified, cloned and expressed in Escherichia coli. Following 6xHis tag purification, characterization revealed the protein to be a covalent flavoprotein of 47 kDa with a remarkably similar reactivity and substrate specificity to that of AldO. A steady-state kinetic analysis with a number of different polyol substrates revealed lower catalytic rates but slightly altered substrate specificity when compared to AldO. Thermostability measurements revealed that the novel AldO is a highly thermostable enzyme with an unfolding temperature of 84 °C and an activity half-life at 75 °C of 112 min, prompting the name HotAldO. Inspired by earlier studies, we attempted a straightforward, exploratory approach to improve the thermostability of AldO by replacing residues with high B-factors with corresponding residues from HotAldO. None of these mutations resulted in a more thermostable oxidase; a fact that was corroborated by in silico analysis.
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Affiliation(s)
- Remko T. Winter
- Laboratory of Biochemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Dominic P. H. M. Heuts
- Manchester Interdisciplinary Biocentre and Faculty of Life Sciences, University of Manchester, 131 Princess Street, Manchester, M1 7DN UK
| | - Egon M. A. Rijpkema
- Laboratory of Biochemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Edwin van Bloois
- Laboratory of Biochemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Hein J. Wijma
- Laboratory of Biochemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Marco W. Fraaije
- Laboratory of Biochemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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276
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Fan L, Zhang M, Zhang S. An efficient synthetic method for allyl-epoxides via allylation of α-haloketones or esters with allylmagnesium bromide. Org Biomol Chem 2012; 10:3182-4. [DOI: 10.1039/c2ob00051b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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277
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Yoshimura F, Kowata A, Tanino K. Stereocontrolled synthesis of carbocyclic compounds with a quaternary carbon atom based on SN2′ alkylation of γ,δ-epoxy-α,β-unsaturated ketones. Org Biomol Chem 2012; 10:5431-42. [DOI: 10.1039/c2ob25719j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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278
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Kamijo S. New Development toward Direct C-H Functionalization Strategies: Oxidations and Carbon-Unit Installations. J SYN ORG CHEM JPN 2012. [DOI: 10.5059/yukigoseikyokaishi.70.996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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279
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Fung YS, Yan SC, Wong MK. Selective oxidation of unactivated C–H bonds by supramolecular control. Org Biomol Chem 2012; 10:3122-30. [DOI: 10.1039/c2ob07069c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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280
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Morimoto Y. Total Synthesis of Marine Halogen-Containing Triterpene Polyethers Using Regioselective 5- exo and 6- endo Cyclizations and the Stereochemistry. J SYN ORG CHEM JPN 2012. [DOI: 10.5059/yukigoseikyokaishi.70.154] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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281
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Chu Y, Liu X, Li W, Hu X, Lin L, Feng X. Asymmetric catalytic epoxidation of α,β-unsaturated carbonyl compounds with hydrogen peroxide: Additive-free and wide substrate scope. Chem Sci 2012. [DOI: 10.1039/c2sc20218b] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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282
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283
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Pan J, Zhang M, Zhang S. Efficient synthetic method for the preparation of allyl- and propargyl-epoxides by allylation and propargylation of α-haloketones with organozinc reagents. Org Biomol Chem 2012; 10:1060-7. [DOI: 10.1039/c1ob06071f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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284
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Hou H, Zhang Y, Yan CG. One-pot synthesis of 4-substituted isoquinolinium zwitterionic salts by metal-free C–H bond activation. Chem Commun (Camb) 2012; 48:4492-4. [DOI: 10.1039/c2cc30708a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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285
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Silva EMP, Pye RJ, Brown GD, Harwood LM. Towards the Total Synthesis of Mycaperoxide B: Probing Biosynthetic Rationale. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101477] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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286
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First enantioselective synthesis of methyl (+)-7-methoxyanodendroate, an antitubercular dihydrobenzofuran. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.10.095] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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287
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Garcia‐Bosch I, Gómez L, Polo A, Ribas X, Costas M. Stereoselective Epoxidation of Alkenes with Hydrogen Peroxide using a Bipyrrolidine‐Based Family of Manganese Complexes. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100409] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Isaac Garcia‐Bosch
- QBIS Group, Departament de Química, Universitat de Girona, Campus Montilivi, E‐17071 Girona, Catalonia, Spain
| | - Laura Gómez
- QBIS Group, Departament de Química, Universitat de Girona, Campus Montilivi, E‐17071 Girona, Catalonia, Spain
| | - Alfonso Polo
- Departament de Química, Universitat de Girona, Campus Montilivi, E‐17071 Girona, Catalonia, Spain
| | - Xavi Ribas
- QBIS Group, Departament de Química, Universitat de Girona, Campus Montilivi, E‐17071 Girona, Catalonia, Spain
| | - Miquel Costas
- QBIS Group, Departament de Química, Universitat de Girona, Campus Montilivi, E‐17071 Girona, Catalonia, Spain
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288
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Peng X, Li P, Shi Y. Synthesis of (+)-Ambrisentan via Chiral Ketone-Catalyzed Asymmetric Epoxidation. J Org Chem 2011; 77:701-3. [DOI: 10.1021/jo201927m] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xianyou Peng
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Peijun Li
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yian Shi
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523,
United States
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289
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Lu Y, Zheng C, Yang Y, Zhao G, Zou G. Highly Enantioselective Epoxidation of α,β-Unsaturated Ketones Catalyzed by Primary-Secondary Diamines. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100230] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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290
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Yuan Y, Zhu H. Iodine-Catalyzed Synthesis of 1,2-Diaryldiketones by Oxidative Cleavage of 1,3-Diaryldiketones with DMSO. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101028] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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291
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Schoenfeldt NJ, Ni Z, Korinda AW, Meyer RJ, Notestein JM. Manganese Triazacyclononane Oxidation Catalysts Grafted under Reaction Conditions on Solid Cocatalytic Supports. J Am Chem Soc 2011; 133:18684-95. [DOI: 10.1021/ja204761e] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nicholas J. Schoenfeldt
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological Institute, Room E136, Evanston, Illinois 60208, United States
| | - Zhenjuan Ni
- Department of Chemical Engineering, University of Illinois at Chicago, 810 South Clinton Street, Chicago, Illinois 60607, United States
| | - Andrew W. Korinda
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological Institute, Room E136, Evanston, Illinois 60208, United States
| | - Randall J. Meyer
- Department of Chemical Engineering, University of Illinois at Chicago, 810 South Clinton Street, Chicago, Illinois 60607, United States
| | - Justin M. Notestein
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Technological Institute, Room E136, Evanston, Illinois 60208, United States
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292
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Wang T, Chen XY, Ye S. DABCO-catalyzed [2+2] cycloaddition reactions of allenoates and trifluoromethylketones: synthesis of 2-alkyleneoxetanes. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.08.057] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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293
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Matsumoto K, Feng C, Handa S, Oguma T, Katsuki T. Asymmetric epoxidation of (Z)-enol esters catalyzed by titanium(salalen) complex with aqueous hydrogen peroxide. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.06.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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294
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Vega-Pérez JM, Periñán I, Vega-Holm M, Palo-Nieto C, Iglesias-Guerra F. New mannose-derived ketones as organocatalysts for enantioselective dioxirane-mediated epoxidation of arylalkenes. Part 3: Chiral ketones from sugars. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.07.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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295
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Peng X, Zhu Y, Ramirez TA, Zhao B, Shi Y. New Reactivity of Oxaziridine: Pd(II)-Catalyzed Aromatic C–H Ethoxycarbonylation via C–C Bond Cleavage. Org Lett 2011; 13:5244-7. [DOI: 10.1021/ol2021252] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xingao Peng
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Yingguang Zhu
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Thomas A. Ramirez
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Baoguo Zhao
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Yian Shi
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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296
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Affiliation(s)
- Nicholas J. Turner
- School of Chemistry, University of Manchester, Manchester Interdisciplinary Biocentre, 131 Princess Street, Manchester M1 7DN, U.K
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297
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Abstract
The combination of Fe(OTf)(2) and novel phenanthroline ligands enables the catalytic asymmetric epoxidation of acyclic β,β-disubstituted enones, which have been a heretofore inaccessible substrate class. The reaction provides highly enantioenriched α,β-epoxyketones (up to 92% ee) that can be further converted to functionalized β-ketoaldehydes with an all-carbon quaternary center.
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Affiliation(s)
- Yasuhiro Nishikawa
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Hisashi Yamamoto
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
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298
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Xiong D, Hu X, Wang S, Miao CX, Xia C, Sun W. Biaryl-Bridged Salalen Ligands and Their Application in Titanium-Catalyzed Asymmetric Epoxidation of Olefins with Aqueous H2O2. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100512] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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299
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300
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Kolundzic F, Noshi MN, Tjandra M, Movassaghi M, Miller SJ. Chemoselective and enantioselective oxidation of indoles employing aspartyl peptide catalysts. J Am Chem Soc 2011; 133:9104-11. [PMID: 21539386 DOI: 10.1021/ja202706g] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Catalytic enantioselective indole oxidation is a process of particular relevance to the chemistry of complex alkaloids, as it has been implicated in their biosynthesis. In the context of synthetic methodology, catalytic enantioselective indole oxidation allows a rapid and biomimetic entry into several classes of alkaloid natural products. Despite this potentially high utility in the total synthesis, reports of catalytic enantioselective indole oxidation remain sparse. Here we report a highly chemoselective catalytic system for the indole oxidation that delivers 3-hydroxy-indolenines with good chemical yields and moderate to high levels of enantio- and diastereoselectivity (up to 95:5 er and up to 92:8 dr). These results represent, to our knowledge, the most selective values yet reported in the literature for catalytic asymmetric indole oxidation. Furthermore, the utility of enantioenriched hydroxy-indolenines in stereospecific rearrangements is demonstrated.
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Affiliation(s)
- Filip Kolundzic
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, USA
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