1
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Egami H, Hamashima Y. Asymmetric Fluorofunctionalizations with Carboxylate-Based Phase-Transfer Catalysts. CHEM REC 2023:e202200285. [PMID: 36734199 DOI: 10.1002/tcr.202200285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/29/2023] [Indexed: 02/04/2023]
Abstract
Fluorine is an attractive element in the field of pharmaceutical and agrochemical chemistry due to its unique properties. Considering the chiral environment in nature, where enantiomers often show different biological activities, the introduction of fluorine atom(s) into organic molecules to make chiral fluorinated compounds is an important subject. Herein, we describe the story of the development of our chiral carboxylate-based phase-transfer catalysts and their applications for asymmetric fluorocyclizations of alkenes bearing a carboxylic acid, an amide, and an oxime as an internal nucleophile with a dicationic fluorinating reagent, Selectfluor. We also describe dearomative fluorinations of indole derivatives, 2-naphthols, and resorcinols.
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Affiliation(s)
- Hiromichi Egami
- School of Pharmaceutical Sciences, University of Shizuoka 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan
| | - Yoshitaka Hamashima
- School of Pharmaceutical Sciences, University of Shizuoka 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan
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2
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Affiliation(s)
- Dean D. Roberts
- Department of Chemistry Lancaster University Bailrigg Lancaster LA1 4YB UK
| | - Mark G. McLaughlin
- Department of Chemistry Lancaster University Bailrigg Lancaster LA1 4YB UK
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3
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Gao Y, Qin W, Tian M, Zhao X, Hu X. Defluorinative Alkylation of Trifluoromethyl Alkenes with Soft Carbon Nucleophiles Enabled by a Catalytic Amount of Base. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ya Gao
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 People's Republic of China
| | - Wei Qin
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 People's Republic of China
| | - Ming‐Qing Tian
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 People's Republic of China
| | - Xuefei Zhao
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 People's Republic of China
| | - Xu‐Hong Hu
- Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 People's Republic of China
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4
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Hong SJ, Yoon CJ, Lim HN, Yeom H. Step‐Economical Route to 2‐Amido‐3‐bromobenzo[
b
]thiophenes
via
Ynamide Formation and Selectfluor‐Mediated Oxidative Bromocyclization. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Su Jeong Hong
- Eco-Friendly New Materials Research Center, Therapeutics&Biotechnology Division Korea Research Institute of Chemical Technology (KRICT) 141 Gajeong-ro, Yuseong-gu Daejeon 34114 Republic of Korea
- Department of Chemistry Hanyang University 222, Wangsimni-ro, Seongdong-gu Seoul 04763 Republic of Korea
| | - Chang Ju Yoon
- Eco-Friendly New Materials Research Center, Therapeutics&Biotechnology Division Korea Research Institute of Chemical Technology (KRICT) 141 Gajeong-ro, Yuseong-gu Daejeon 34114 Republic of Korea
- Department of Chemistry Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon-si Gyeonggi-do 16419 Republic of Korea
| | - Hee Nam Lim
- Department of Chemistry and Biochemistry Yeungnam University 280 Daehak-Ro, Gyeongsan Gyeongbuk 38541 Republic of Korea
| | - Hyun‐Suk Yeom
- Eco-Friendly New Materials Research Center, Therapeutics&Biotechnology Division Korea Research Institute of Chemical Technology (KRICT) 141 Gajeong-ro, Yuseong-gu Daejeon 34114 Republic of Korea
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5
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Bai D, Li L, Li X, Lu Y, Wu Y, Rajendra Prasad Reddy B, Ning Y. Fluorocyclization of Vinyl Azides for the Formation of 3‐Azido Heterocycles. Chem Asian J 2020; 15:4038-4042. [DOI: 10.1002/asia.202001175] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 10/22/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Diangang Bai
- School of Chemistry and School of Chemistry and Life Science Anshan Normal University Anshan 114005 P. R. China
| | - Linxuan Li
- Department of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | - Xiaomeng Li
- Department of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | - Ying Lu
- Department of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | - Yong Wu
- Department of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | | | - Yongquan Ning
- School of Chemistry and School of Chemistry and Life Science Anshan Normal University Anshan 114005 P. R. China
- Department of Chemistry Northeast Normal University Changchun 130024 P. R. China
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6
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Wang H, Wang Y, Liu S, Mai Y, Zong X, Gao H, Hu R, Jiang X, Yeung Y. Enantioselective Fluorocyclizations Mediated by Amino‐Acid‐Derived Phthalazine. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900814] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Haitao Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Yongheng Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Shenghui Liu
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Yudong Mai
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Xiangxin Zong
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Hao Gao
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Rongbin Hu
- Department of ChemistryThe Chinese University of Hong Kong Shatin, NT, Hong Kong People's Republic of China
| | - Xiaojian Jiang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Ying‐Yeung Yeung
- Department of ChemistryThe Chinese University of Hong Kong Shatin, NT, Hong Kong People's Republic of China
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7
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Reddy KHV, Bédier M, Bouzbouz S. Efficient and Direct Synthesis of γ-Amino-α,β-Unsaturated Amides by Catalyzed Allylic Substitution of α-Fluoroenamides: Toward to Synthesis of Hybrid Peptides and Indolizidines. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800110] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | - Matthieu Bédier
- INSA, COBRA UMR 6014; CNRS, University of Rouen; 76183 Mont Saint Aignan cedex France
| | - Samir Bouzbouz
- INSA, COBRA UMR 6014; CNRS, University of Rouen; 76183 Mont Saint Aignan cedex France
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8
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Catalytic Cycloisomerization-Fluorination Sequence ofN-Propargyl Amides by Iodoarene/HF⋅Pyridine/Selectfluor Systems. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600383] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Hyde S, Veliks J, Liégault B, Grassi D, Taillefer M, Gouverneur V. Copper-Catalyzed Insertion into Heteroatom-Hydrogen Bonds with Trifluorodiazoalkanes. Angew Chem Int Ed Engl 2016; 55:3785-9. [PMID: 26880039 DOI: 10.1002/anie.201511954] [Citation(s) in RCA: 139] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Indexed: 02/02/2023]
Abstract
Copper-catalyzed Si-H, B-H, P-H, S-H, and N-H insertion reactions of 2,2,2-trifluoro-1-diazoethane and 1-aryl 2,2,2-trifluorodiazoethanes generated a large number of new fluorine-containing chemical entities for medicinal chemists. With selected Si-H and B-H insertion reactions, we demonstrate successful extension to asymmetric catalysis.
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Affiliation(s)
- Stephen Hyde
- University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Janis Veliks
- University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Benoît Liégault
- University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK.,Institut Charles Gerhardt Montpellier, UMR-CNRS 5253, AM2N, ENSCM, 8 rue de l'Ecole Normale, 34296, Montpellier Cedex 5, France
| | - David Grassi
- University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Marc Taillefer
- Institut Charles Gerhardt Montpellier, UMR-CNRS 5253, AM2N, ENSCM, 8 rue de l'Ecole Normale, 34296, Montpellier Cedex 5, France
| | - Véronique Gouverneur
- University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK.
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10
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Hyde S, Veliks J, Liégault B, Grassi D, Taillefer M, Gouverneur V. Copper-Catalyzed Insertion into Heteroatom-Hydrogen Bonds with Trifluorodiazoalkanes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511954] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Stephen Hyde
- University of Oxford; Chemistry Research Laboratory; Mansfield Road Oxford OX1 3TA UK
| | - Janis Veliks
- University of Oxford; Chemistry Research Laboratory; Mansfield Road Oxford OX1 3TA UK
| | - Benoît Liégault
- University of Oxford; Chemistry Research Laboratory; Mansfield Road Oxford OX1 3TA UK
- Institut Charles Gerhardt Montpellier, UMR-CNRS 5253, AM2N, ENSCM; 8 rue de l'Ecole Normale 34296 Montpellier Cedex 5 France
| | - David Grassi
- University of Oxford; Chemistry Research Laboratory; Mansfield Road Oxford OX1 3TA UK
| | - Marc Taillefer
- Institut Charles Gerhardt Montpellier, UMR-CNRS 5253, AM2N, ENSCM; 8 rue de l'Ecole Normale 34296 Montpellier Cedex 5 France
| | - Véronique Gouverneur
- University of Oxford; Chemistry Research Laboratory; Mansfield Road Oxford OX1 3TA UK
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11
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Geary GC, Hope EG, Stuart AM. Intramolecular Fluorocyclizations of Unsaturated Carboxylic Acids with a Stable Hypervalent Fluoroiodane Reagent. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507790] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
| | | | - Alison M. Stuart
- Department of Chemistry, University of Leicester, Leicester, LE1 7RH (UK)
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12
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Geary GC, Hope EG, Stuart AM. Intramolecular Fluorocyclizations of Unsaturated Carboxylic Acids with a Stable Hypervalent Fluoroiodane Reagent. Angew Chem Int Ed Engl 2015; 54:14911-4. [DOI: 10.1002/anie.201507790] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Indexed: 12/27/2022]
Affiliation(s)
| | | | - Alison M. Stuart
- Department of Chemistry, University of Leicester, Leicester, LE1 7RH (UK)
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13
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Yuan W, Szabó KJ. Catalytic Intramolecular Aminofluorination, Oxyfluorination, and Carbofluorination with a Stable and Versatile Hypervalent Fluoroiodine Reagent. Angew Chem Int Ed Engl 2015; 54:8533-7. [PMID: 26069071 PMCID: PMC4531827 DOI: 10.1002/anie.201503373] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Indexed: 02/04/2023]
Abstract
Application of a fluoroiodine analogue of the Togni reagent was studied in fluorocyclization reactions. In the presence of a transition-metal catalyst the applied fluoroiodine reagent can be used for aminofluorination, oxyfluorination, and carbofluorination reactions. The described procedure has a very broad synthetic scope for preparation of functionalized hetero- and isocyclic compounds having a tertiary fluorine substituent.
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Affiliation(s)
- Weiming Yuan
- Department of Organic Chemistry, Stockholm University (Sweden) http://www.organ.su.se/ks/
| | - Kálmán J Szabó
- Department of Organic Chemistry, Stockholm University (Sweden) http://www.organ.su.se/ks/.
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14
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Yu W, Xu XH, Qing FL. Silver-Mediated Oxidative Fluorotrifluoromethylation of Unactivated Alkenes. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500027] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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15
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Yuan W, Szabó KJ. Catalytic Intramolecular Aminofluorination, Oxyfluorination, and Carbofluorination with a Stable and Versatile Hypervalent Fluoroiodine Reagent. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503373] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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16
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Geng C, Zhu R, Li M, Lu T, Wheeler SE, Liu C. Revised Role of Selectfluor in Homogeneous Au-Catalyzed Oxidative CO Bond Formations. Chemistry 2014; 20:15833-9. [DOI: 10.1002/chem.201404277] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Indexed: 11/05/2022]
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17
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Li Z, Zhang C, Zhu L, Liu C, Li C. Transition-metal-free, room-temperature radical azidofluorination of unactivated alkenes in aqueous solution. Org Chem Front 2014. [DOI: 10.1039/c3qo00037k] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Wolstenhulme JR, Rosenqvist J, Lozano O, Ilupeju J, Wurz N, Engle KM, Pidgeon GW, Moore PR, Sandford G, Gouverneur V. Asymmetric electrophilic fluorocyclization with carbon nucleophiles. Angew Chem Int Ed Engl 2013; 52:9796-800. [PMID: 23873744 DOI: 10.1002/anie.201304845] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Jamie R Wolstenhulme
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
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19
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Wolstenhulme JR, Rosenqvist J, Lozano O, Ilupeju J, Wurz N, Engle KM, Pidgeon GW, Moore PR, Sandford G, Gouverneur V. Asymmetric Electrophilic Fluorocyclization with Carbon Nucleophiles. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304845] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Shunatona HP, Früh N, Wang YM, Rauniyar V, Toste FD. Enantioselective Fluoroamination: 1,4-Addition to Conjugated Dienes Using Anionic Phase-Transfer Catalysis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302002] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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21
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Shunatona HP, Früh N, Wang YM, Rauniyar V, Toste FD. Enantioselective Fluoroamination: 1,4-Addition to Conjugated Dienes Using Anionic Phase-Transfer Catalysis. Angew Chem Int Ed Engl 2013; 52:7724-7. [DOI: 10.1002/anie.201302002] [Citation(s) in RCA: 122] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2013] [Revised: 05/03/2013] [Indexed: 01/10/2023]
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22
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Chen ZM, Yang BM, Chen ZH, Zhang QW, Wang M, Tu YQ. Organocatalytic Asymmetric Fluorination/Semipinacol Rearrangement: An Efficient Approach to Chiral β-Fluoroketones. Chemistry 2012; 18:12950-4. [DOI: 10.1002/chem.201202444] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Indexed: 11/09/2022]
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23
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Hennecke U. A New Approach towards the Asymmetric Fluorination of Alkenes Using Anionic Phase-Transfer Catalysts. Angew Chem Int Ed Engl 2012; 51:4532-4. [DOI: 10.1002/anie.201200831] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Indexed: 01/11/2023]
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24
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Eine neue Strategie für asymmetrische Fluorierungen von Alkenen auf Basis anionischer Phasentransferkatalysatoren. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200831] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Suzuki S, Tokunaga E, Reddy DS, Matsumoto T, Shiro M, Shibata N. Enantioselective 5-endo-dig Carbocyclization of β-Ketoesters with Internal Alkynes Employing a Four-Component Catalyst System. Angew Chem Int Ed Engl 2012; 51:4131-5. [DOI: 10.1002/anie.201201060] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Indexed: 11/06/2022]
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26
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Suzuki S, Tokunaga E, Reddy DS, Matsumoto T, Shiro M, Shibata N. Enantioselective 5-endo-dig Carbocyclization of β-Ketoesters with Internal Alkynes Employing a Four-Component Catalyst System. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201060] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Hennecke U. New catalytic approaches towards the enantioselective halogenation of alkenes. Chem Asian J 2012; 7:456-65. [PMID: 22315237 DOI: 10.1002/asia.201100856] [Citation(s) in RCA: 213] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Indexed: 11/10/2022]
Abstract
The addition of electrophilic reagents to the carbon-carbon double bond is one of the most fundamental reactions in organic chemistry. Halogen electrophiles constitute probably the most important class of electrophiles and have been widely used to induce electrophilic addition reactions to alkenes like halolactonizations or dihalogenations. Despite their long history and high importance, catalytic, asymmetric variants of these reactions have been underdeveloped until very recently. During the last two years this has changed and many novel approaches have been reported. This review aims to cover these new developments through discussing the common themes as well as the suggested mechanistic scenarios.
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Affiliation(s)
- Ulrich Hennecke
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48151 Münster, Germany.
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28
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Lozano O, Blessley G, Martinez del Campo T, Thompson AL, Giuffredi GT, Bettati M, Walker M, Borman R, Gouverneur V. Organocatalyzed Enantioselective Fluorocyclizations. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103151] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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29
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Lozano O, Blessley G, Martinez del Campo T, Thompson AL, Giuffredi GT, Bettati M, Walker M, Borman R, Gouverneur V. Organocatalyzed enantioselective fluorocyclizations. Angew Chem Int Ed Engl 2011; 50:8105-9. [PMID: 21751319 DOI: 10.1002/anie.201103151] [Citation(s) in RCA: 350] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2011] [Indexed: 11/06/2022]
Abstract
Enantioenriched fluorinated heterocycles can be prepared through fluorocyclizations of prochiral indoles (see scheme; Ts=tosyl, Bn=benzyl, Boc=tert-butoxycarbonyl). More than twenty examples for this cascade fluorination-cyclization, which is catalyzed by cinchona alkaloids and employs N-fluorobenzenesulfonimide as the electrophilic fluorine source have been explored, and an unprecedented catalytic asymmetric difluorocyclization has also been identified.
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Affiliation(s)
- Oscar Lozano
- Chemistry Research Laboratory, University of Oxford, UK
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30
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Giuffredi GT, Bernet B, Gouverneur V. De Novo Synthesis of Racemic 4-Deoxy-4,4-difluoro- and 2,4-Dideoxy-2,4,4-trifluorohexosides. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100565] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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31
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Abstract
This Minireview discusses the progress made in developing reactions where an olefin is subjected to an asymmetric halogenation. It aims to serve as a reference for the studies reported to date, including preliminary work and mechanistic studies. The current state of the art, scope, and limitations of these processes are discussed.
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Affiliation(s)
- Alejandro Castellanos
- Department of Chemistry, Chemical Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK
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32
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Jaganathan A, Garzan A, Whitehead DC, Staples RJ, Borhan B. A Catalytic Asymmetric Chlorocyclization of Unsaturated Amides. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006910] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Jaganathan A, Garzan A, Whitehead DC, Staples RJ, Borhan B. A catalytic asymmetric chlorocyclization of unsaturated amides. Angew Chem Int Ed Engl 2011; 50:2593-6. [PMID: 21370344 DOI: 10.1002/anie.201006910] [Citation(s) in RCA: 156] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Indexed: 11/08/2022]
Affiliation(s)
- Arvind Jaganathan
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA
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