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Lozada J, Xuan Lin W, Cao-Shen RM, Astoria Tai R, Perrin DM. Salt Metathesis: Tetrafluoroborate Anion Rapidly Fluoridates Organoboronic Acids to give Organotrifluoroborates. Angew Chem Int Ed Engl 2023; 62:e202215371. [PMID: 36720697 DOI: 10.1002/anie.202215371] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 02/02/2023]
Abstract
Tetrafluoroborate (BF4 - ) has long been used as a spectator counter anion. Herein, we report an unprecedented salt metathesis between a variety of BF4 - salts and a series of organoboronic acids yielding the corresponding organotrifluoroborates. We identified conditions for fast and efficient fluoridation (<1 h) with minimal workup. Fundamentally, this work discloses the proclivity of BF4 - to exchange fluoride atoms with organoboronates, highlighting the lability of BF4 - .
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Affiliation(s)
- Jerome Lozada
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - Wen Xuan Lin
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - Rosana M Cao-Shen
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - Ruyin Astoria Tai
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - David M Perrin
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
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2
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Ponra S, Yang J, Wu H, Rabten W, Andersson PG. Asymmetric synthesis of 1,2-fluorohydrin: iridium catalyzed hydrogenation of fluorinated allylic alcohol. Chem Sci 2020; 11:11189-11194. [PMID: 34094359 PMCID: PMC8162319 DOI: 10.1039/d0sc04032k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 08/24/2020] [Indexed: 12/18/2022] Open
Abstract
We have developed a simple protocol for the preparation of 1,2-fluorohydrin by asymmetric hydrogenation of fluorinated allylic alcohols using an efficient azabicyclo thiazole-phosphine iridium complex. The iridium-catalyzed asymmetric synthesis of chiral 1,2-fluorohydrin molecules was carried out at ambient temperature with operational simplicity, and scalability. This method was compatible with various aromatic, aliphatic, and heterocyclic fluorinated compounds as well as a variety of polyfluorinated compounds, providing the corresponding products in excellent yields and enantioselectivities.
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Affiliation(s)
- Sudipta Ponra
- Department of Organic Chemistry, Stockholm University Svante Arrhenius väg 16C SE-10691 Stockholm Sweden
| | - Jianping Yang
- Department of Organic Chemistry, Stockholm University Svante Arrhenius väg 16C SE-10691 Stockholm Sweden
| | - Haibo Wu
- Department of Organic Chemistry, Stockholm University Svante Arrhenius väg 16C SE-10691 Stockholm Sweden
| | - Wangchuk Rabten
- Department of Organic Chemistry, Stockholm University Svante Arrhenius väg 16C SE-10691 Stockholm Sweden
| | - Pher G Andersson
- Department of Organic Chemistry, Stockholm University Svante Arrhenius väg 16C SE-10691 Stockholm Sweden
- School of Chemistry and Physics, University of KwaZulu-Natal Private Bag X54001 Durban 4000 South Africa
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3
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Cinelli MA, Lee KSS. Asymmetric Total Synthesis of 19,20-Epoxydocosapentaenoic Acid, a Bioactive Metabolite of Docosahexaenoic Acid. J Org Chem 2019; 84:15362-15372. [PMID: 31701741 DOI: 10.1021/acs.joc.9b02378] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In this study, we report the first asymmetric total synthesis of 19,20-epoxydocosapentaenoic acid (19,20-EDP), a naturally occurring bioactive cytochrome P450 metabolite of docosahexaenoic acid, a major constituent of fish oil. Our strategy involves direct asymmetric epoxidation to produce an enantiopure β-epoxyaldehyde that can be appended to the rest of the skipped polyene core by Wittig condensation. Our route is step-economical and late divergent and could be an appealing method by which to synthesize EDP analogues for biological studies.
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Affiliation(s)
- Maris A Cinelli
- Department of Pharmacology and Toxicology , Michigan State University , East Lansing , Michigan 48824 , United States
| | - Kin Sing Stephen Lee
- Department of Pharmacology and Toxicology , Michigan State University , East Lansing , Michigan 48824 , United States.,Department of Chemistry , Michigan State University , East Lansing , Michigan 48824 , United States
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4
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Remete AM, Kiss L. Synthesis of Fluorine-Containing Molecular Entities Through Fluoride Ring Opening of Oxiranes and Aziridines. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900981] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Attila Márió Remete
- Institute of Pharmaceutical Chemistry; University of Szeged; Eötvös u. 6 6720 Szeged Hungary
- Interdisciplinary Excellence Centre; Institute of Pharmaceutical Chemistry; University of Szeged; Eötvös u. 6 6720 Szeged Hungary
| | - Loránd Kiss
- Institute of Pharmaceutical Chemistry; University of Szeged; Eötvös u. 6 6720 Szeged Hungary
- Interdisciplinary Excellence Centre; Institute of Pharmaceutical Chemistry; University of Szeged; Eötvös u. 6 6720 Szeged Hungary
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5
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Csatayová K, Davies SG, Fletcher AM, Fowler TR, Kennedy MS, Roberts PM, Thomson JE. Asymmetric Syntheses of 3-Deoxy-3-aminosphingoid Bases: Approaches Based on Parallel Kinetic Resolution and Double Asymmetric Induction. J Org Chem 2017; 82:12447-12466. [PMID: 29022337 DOI: 10.1021/acs.joc.7b02233] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The asymmetric syntheses of a range of N- and O-protected 3-deoxy-3-aminosphingoid bases have been achieved using two complementary approaches. dl-Serine was converted to a racemic N,N-dibenzyl-protected γ-amino-α,β-unsaturated ester which was resolved using a parallel kinetic resolution (PKR) strategy upon reaction with a pseudoenantiomeric mixture of lithium (R)-N-benzyl-N-(α-methylbenzyl)amide and lithium (S)-N-3,4-dimethoxybenzyl-N-(α-methylbenzyl)amide, giving the corresponding enantio- and diastereoisomerically pure β,γ-diamino esters. Alternatively, elaboration of l-serine gave the corresponding enantiopure N,N-dibenzyl-protected γ-amino-α,β-unsaturated ester, and doubly diastereoselective conjugate addition of the antipodes of lithium N-benzyl-N-(α-methylbenzyl)amide was found to proceed under the dominant stereocontrol of the lithium amide reagent in both cases, thus augmenting the accessible range of β,γ-diamino esters. Both of these protocols were expanded to include in situ oxidation of the enolate formed upon conjugate addition, giving access to the corresponding α-hydroxy-β,γ-diamino esters. Elaboration of these β,γ-diamino and α-hydroxy-β,γ-diamino esters gave the protected forms of the 3-deoxy-3-aminosphingoid base targets.
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Affiliation(s)
- Kristína Csatayová
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - Stephen G Davies
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - Ai M Fletcher
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - Thomas R Fowler
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - Matthew S Kennedy
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - Paul M Roberts
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - James E Thomson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
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Remete AM, Nonn M, Fustero S, Fülöp F, Kiss L. A Stereocontrolled Protocol to Highly Functionalized Fluorinated Scaffolds through a Fluoride Opening of Oxiranes. Molecules 2016; 21:molecules21111493. [PMID: 27869692 PMCID: PMC6274065 DOI: 10.3390/molecules21111493] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 09/19/2016] [Accepted: 11/04/2016] [Indexed: 11/18/2022] Open
Abstract
A novel selective and substrate-dependent synthetic protocol has been developed towards the synthesis of various fluorine-containing, highly functionalized cycloalkane derivatives. The method involves the stereoselective epoxidation of some unsaturated cyclic β-amino acid derivatives as model compounds, followed by a regioselective fluoride opening of oxiranes under various conditions with Deoxofluor and XtalFluor-E reagents, thereby offering an insight into this new epoxide opening methodology with fluoride.
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Affiliation(s)
- Attila Márió Remete
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary.
| | - Melinda Nonn
- MTA-SZTE Stereochemistry Research Group, Hungarian Academy of Sciences, Eötvös u. 6, H-6720 Szeged, Hungary.
| | - Santos Fustero
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Valencia, Av. Vicente Andrés Estellés, s/n 46100 Valencia, Spain.
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary.
- MTA-SZTE Stereochemistry Research Group, Hungarian Academy of Sciences, Eötvös u. 6, H-6720 Szeged, Hungary.
| | - Loránd Kiss
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary.
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Yan N, Fang Z, Liu QQ, Guo XH, Hu XG. Conformation-induced regioselective and divergent opening of epoxides by fluoride: facile access to hydroxylated fluoro-piperidines. Org Biomol Chem 2016; 14:3469-75. [PMID: 26971837 DOI: 10.1039/c6ob00063k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Utilizing molecular conformation as a controlling factor, epoxide-containing 2-aryl-piperidines can be ring-opened with the reagent combination of tetrabutylammonium fluoride (TBAF) and potassium bifluoride (KHF2) in a regioselective and divergent fashion. Four different types of hydroxylated fluoro-piperidines, valuable building blocks in drug development, were readily synthesized using this method. The basic nature of the reagent combination allowed a one-pot deprotection/ring opening process, which increased the efficacy of this transformation.
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Affiliation(s)
- Nan Yan
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China.
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8
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Davies SG, Fletcher AM, Thomson JE. Hydrogen bond directed epoxidation: diastereoselective olefinic oxidation of allylic alcohols and amines. Org Biomol Chem 2015; 12:4544-9. [PMID: 24854106 DOI: 10.1039/c4ob00616j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article compares the diastereoselective epoxidation of acyclic and cyclic allylic alcohols, with the chemo- and diastereoselective olefinic oxidation of a range of acyclic and cyclic allylic amines. The diastereoselectivity in these systems is compared and a discussion about the origin of this high diastereocontrol is also presented. The ammonium directed epoxidation methodology has been extended to more complex substrates and representative applications of this protocol in natural product synthesis are also summarised.
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Affiliation(s)
- Stephen G Davies
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK.
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9
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Chen S, Mercado BQ, Bergman RG, Ellman JA. Regio- and Diastereoselective Synthesis of Highly Substituted, Oxygenated Piperidines from Tetrahydropyridines. J Org Chem 2015; 80:6660-8. [PMID: 26098485 PMCID: PMC4496584 DOI: 10.1021/acs.joc.5b00816] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Diastereoselective epoxidation and regioselective ring-opening methods were developed for the synthesis of densely substituted, oxygenated piperidines from two classes of tetrahydropyridines with distinct stereochemical displays of functionalities. A new and practical in situ prepared epoxidation reagent was developed for the diastereoselective epoxidation of one class of sterically hindered tetrahydropyridines. The novel bifunctional epoxidation reagent, 2-carboperoxy-3,4,5,6-tetrafluorobenzoic acid, was designed to incorporate highly reactive percarboxy acid and pendant carboxylic acid groups, which through hydrogen bonding to the amino group successfully overrode steric effects and directed epoxidation to occur at the more hindered face of the tetrahydropyridine. Nucleophilic ring-opening of the epoxides with water, alcohols, and HF proceeded with high regioselectivity, affording piperidinol products with adjacent tetrasubstituted carbons.
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Affiliation(s)
- Shuming Chen
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, CT 06520 (USA)
| | - Brandon Q. Mercado
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, CT 06520 (USA)
| | - Robert G. Bergman
- Department of Chemistry, University of California, Berkeley Berkeley, CA 94720-1416 (USA) and Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (USA)
| | - Jonathan A. Ellman
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, CT 06520 (USA)
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10
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Pinacolatoboron fluoride (pinBF) is an efficient fluoride transfer agent for diastereoselective synthesis of benzylic fluorides. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.12.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Champagne PA, Desroches J, Hamel JD, Vandamme M, Paquin JF. Monofluorination of Organic Compounds: 10 Years of Innovation. Chem Rev 2015; 115:9073-174. [PMID: 25854146 DOI: 10.1021/cr500706a] [Citation(s) in RCA: 664] [Impact Index Per Article: 73.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pier Alexandre Champagne
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| | - Justine Desroches
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| | - Jean-Denys Hamel
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| | - Mathilde Vandamme
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| | - Jean-François Paquin
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
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12
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Cresswell AJ, Davies SG, Roberts PM, Thomson JE. Beyond the Balz-Schiemann reaction: the utility of tetrafluoroborates and boron trifluoride as nucleophilic fluoride sources. Chem Rev 2014; 115:566-611. [PMID: 25084541 DOI: 10.1021/cr5001805] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Alexander J Cresswell
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, United Kingdom
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13
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Lu DF, Liu GS, Zhu CL, Yuan B, Xu H. Iron(II)-Catalyzed Intramolecular Olefin Aminofluorination. Org Lett 2014; 16:2912-5. [DOI: 10.1021/ol501051p] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Deng-Fu Lu
- Department of Chemistry, Georgia State University, 100 Piedmont Avenue SE, Atlanta, Georgia 30303, United States
| | - Guan-Sai Liu
- Department of Chemistry, Georgia State University, 100 Piedmont Avenue SE, Atlanta, Georgia 30303, United States
| | - Cheng-Liang Zhu
- Department of Chemistry, Georgia State University, 100 Piedmont Avenue SE, Atlanta, Georgia 30303, United States
| | - Bo Yuan
- Department of Chemistry, Georgia State University, 100 Piedmont Avenue SE, Atlanta, Georgia 30303, United States
| | - Hao Xu
- Department of Chemistry, Georgia State University, 100 Piedmont Avenue SE, Atlanta, Georgia 30303, United States
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14
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Wang Y, Lin Y, Liu Y. Reactions of Propargyl Compounds Containing a Cyclobutyl Group Induced by a Ruthenium Complex. Chem Asian J 2012; 7:2703-10. [DOI: 10.1002/asia.201200589] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Indexed: 11/08/2022]
Affiliation(s)
- Yung‐Ching Wang
- Department of Chemistry, National Taiwan University, Taipei, 106 (Taiwan), Fax: (+886) 223636359
| | - Ying‐Chih Lin
- Department of Chemistry, National Taiwan University, Taipei, 106 (Taiwan), Fax: (+886) 223636359
| | - Yi‐Hung Liu
- Department of Chemistry, National Taiwan University, Taipei, 106 (Taiwan), Fax: (+886) 223636359
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15
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Cresswell AJ, Davies SG, Lee JA, Morris MJ, Roberts PM, Thomson JE. Diastereodivergent Hydroxyfluorination of Cyclic and Acyclic Allylic Amines: Synthesis of 4-Deoxy-4-fluorophytosphingosines. J Org Chem 2012; 77:7262-81. [DOI: 10.1021/jo301056r] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Alexander J. Cresswell
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA,
U.K
| | - Stephen G. Davies
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA,
U.K
| | - James A. Lee
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA,
U.K
| | - Melloney J. Morris
- Syngenta, Jealott’s Hill International Research Centre, Bracknell,
Berkshire RG42 6EY, U.K
| | - Paul M. Roberts
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA,
U.K
| | - James E. Thomson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA,
U.K
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16
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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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17
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García Ruano JL, Fernández-Salas JA, Maestro MC. Stereocontrolled Fluorobenzylation of Vinyl Sulfones and α,β-Unsaturated Esters Mediated by a Remote Sulfinyl Group. Synthesis of Functionalized Enantiomerically Pure Benzylic Fluorides. J Org Chem 2012; 77:2893-900. [DOI: 10.1021/jo300174k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- José Luis García Ruano
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco,
28049 Madrid, Spain
| | | | - M. Carmen Maestro
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco,
28049 Madrid, Spain
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18
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Deobald AM, Corrêa AG, Rivera DG, Paixão MW. Organocatalytic asymmetric epoxidation and tandem epoxidation/Passerini reaction under eco-friendly reaction conditions. Org Biomol Chem 2012; 10:7681-4. [DOI: 10.1039/c2ob26247a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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