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Bhosale VA, Nigríni M, Dračínský M, Císařová I, Veselý J. Enantioselective Desymmetrization of 3-Substituted Oxetanes: An Efficient Access to Chiral 3,4-Dihydro-2 H-1,4-benzoxazines. Org Lett 2021; 23:9376-9381. [PMID: 34817183 DOI: 10.1021/acs.orglett.1c03419] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we describe a versatile transition metal/oxidant free synthesis of the chiral 2H-1,4-benzoxazines through chiral phosphoric acid (CPA) catalyzed enantioselective desymmetrization of prochiral oxetanes (30 examples) in up to 99% yield and 99% enantioselectivity under mild reaction conditions. The reported strategy not only complements the conventional 2H-1,4-benzoxazine synthetic strategies but also provides access to key intermediates of therapeutic candidates, i.e., prostaglandin D2 receptor antagonist and M1 positive allosteric modulator (PAM) compound VU0486846.
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Affiliation(s)
- Viraj A Bhosale
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague, Czech Republic
| | - Martin Nigríni
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague, Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 160 00 Prague, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague, Czech Republic
| | - Jan Veselý
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague, Czech Republic
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2
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Sandvoß A, Wiest JM. Recent Advances in Enantioselective Desymmetrizations of Prochiral Oxetanes. Chemistry 2021; 27:5871-5879. [PMID: 33274788 PMCID: PMC8049043 DOI: 10.1002/chem.202004923] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Indexed: 12/23/2022]
Abstract
Strain relief of oxetanes offers a plethora of opportunities for the synthesis of chiral alcohols and ethers. In this context, enantioselective desymmetrization has been identified as a powerful tool to construct molecular complexity and this has led to the development of elegant strategies on the basis of transition metal, Lewis acid, and Brønsted acid catalysis. This review highlights recent examples that harness the inherent reactivity of prochiral oxetanes and offers an outlook on the immense possibilities for synthetic application.
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Affiliation(s)
- Alexander Sandvoß
- Department ChemieJohannes Gutenberg Universität MainzDuesbergweg 10–1455128MainzGermany
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
| | - Johannes M. Wiest
- Department ChemieJohannes Gutenberg Universität MainzDuesbergweg 10–1455128MainzGermany
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 3648149MünsterGermany
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3
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Huang H, Zhang T, Sun J. Mild C–C Bond Formation via Lewis Acid Catalyzed Oxetane Ring Opening with Soft Carbon Nucleophiles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou China
| | - Tianyu Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou China
- Department of Chemistry The Hong Kong University of Science and Technology, Clear Water Bay Kowloon, Hong Kong SAR China
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4
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Huang H, Zhang T, Sun J. Mild C-C Bond Formation via Lewis Acid Catalyzed Oxetane Ring Opening with Soft Carbon Nucleophiles. Angew Chem Int Ed Engl 2021; 60:2668-2673. [PMID: 33459485 DOI: 10.1002/anie.202013062] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Indexed: 11/09/2022]
Abstract
Mild oxetane opening by soft carbon nucleophiles has been developed for efficient C-C bond formation. In the presence of LiNTf2 or TBSNTf2 as catalyst, silyl ketene acetals were found to be effective nucleophiles to generate a wide range of highly oxygenated molecules, which are key substructure in natural products like polyketides. Furthermore, intramolecular oxetane opening by a styrene-based carbon nucleophile via a Prins-type process was also achieved with Sc(OTf)3 as catalyst, leading to efficient formation of the useful 2,3-dihydrobenzo[b]oxepine skeleton.
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Affiliation(s)
- Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China
| | - Tianyu Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China.,Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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Wang G, Huang H, Guo W, Qian C, Sun J. Unusual Skeletal Reorganization of Oxetanes for the Synthesis of 1,2-Dihydroquinolines. Angew Chem Int Ed Engl 2020; 59:11245-11249. [PMID: 32219976 DOI: 10.1002/anie.201916727] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 03/08/2020] [Indexed: 01/29/2023]
Abstract
Skeletal reorganization is a type of fascinating transformations owing to their intriguing mechanisms and utility in complex molecule synthesis. However, only a limited amount of examples are known for most functional groups. Herein, we describe such an unusual process of oxetanes. In the presence of In(OTf)3 as catalyst, oxetane-tethered anilines reacted unexpectedly to form 1,2-dihydroquinolines. This process not only provides expedient access to dihydroquinolines, but also represents a new reaction of oxetane. Mechanistically, it is believed that the reaction proceeds through initial nitrogen attack rather than arene attack followed by a series of bond cleavage and formation events. Control experiments provided important insights into the mechanism.
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Affiliation(s)
- Guannan Wang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
| | - Wengang Guo
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Chenxiao Qian
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China.,Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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6
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Wang G, Huang H, Guo W, Qian C, Sun J. Unusual Skeletal Reorganization of Oxetanes for the Synthesis of 1,2‐Dihydroquinolines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guannan Wang
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Wengang Guo
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Chenxiao Qian
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
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Shrestha R, Khanal HD, Yang W, Kim SH, Shim J, Lee YR. Metal‐Free
N
‐Annulation of 3‐Formylchromones with α‐Amino Ketones for the Construction of Diverse
N
‐Functionalized Pyrroles. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Rajeev Shrestha
- School of Chemical EngineeringYeungnam University Gyeongsan 38541 (Republic of Korea
| | - Hari Datta Khanal
- School of Chemical EngineeringYeungnam University Gyeongsan 38541 (Republic of Korea
| | - Won‐Guen Yang
- Analysis Research DivisionDaegu CenterKorea Basic Science Institute Daegu 41566 (Republic of Korea
| | - Sung Hong Kim
- Analysis Research DivisionDaegu CenterKorea Basic Science Institute Daegu 41566 (Republic of Korea
| | - Jae‐Jin Shim
- School of Chemical EngineeringYeungnam University Gyeongsan 38541 (Republic of Korea
| | - Yong Rok Lee
- School of Chemical EngineeringYeungnam University Gyeongsan 38541 (Republic of Korea
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Perna FM, Falcicchio A, Salomone A, Milet A, Rizzi R, Hamdoun G, Barozzino‐Consiglio G, Stalke D, Oulyadi H, Capriati V. First Direct Evidence of an
ortho
‐Lithiated Aryloxetane: Solid and Solution Structure, and Dynamics. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900949] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Filippo M. Perna
- Dipartimento di Farmacia‐Scienze del Farmaco Università di Bari “Aldo Moro” Consorzio C.I.N.M.P.I.S. Via E. Orabona 4 70125 Bari Italy
| | - Aurelia Falcicchio
- Istituto di Cristallografia (IC‐CNR) Via Amendola 122/o 70125 Bari Italy
| | - Antonio Salomone
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali Università del Salento Prov.le Lecce‐Monteroni 73100 Lecce Italy
| | - Anne Milet
- Université Grenoble Alpes CNRS, DCM 38000 Grenoble France
| | - Rosanna Rizzi
- Istituto di Cristallografia (IC‐CNR) Via Amendola 122/o 70125 Bari Italy
| | - Ghanem Hamdoun
- Normandie Université, UNIROUEN INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038) Rouen France
| | | | - Dietmar Stalke
- Institut für Anorganische Chemie Universität Göttingen Tammannstrasse 6 37077 Göttingen Germany
| | - Hassan Oulyadi
- Normandie Université, UNIROUEN INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038) Rouen France
| | - Vito Capriati
- Dipartimento di Farmacia‐Scienze del Farmaco Università di Bari “Aldo Moro” Consorzio C.I.N.M.P.I.S. Via E. Orabona 4 70125 Bari Italy
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Krishnan J, Mayadevi TS, Varughese S, Nair V. Facile Diastereoselective Synthesis of Highly Substituted Alkylene-oxetanes from 3-Alkyl Allenoates and Diaryl 1,2-Diones/α-Ketoamides Mediated by DBU. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801747] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jagadeesh Krishnan
- Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); 695 019 Thiruvananthapuram - India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); 695 019 Thiruvananthapuram - India
| | - T. S. Mayadevi
- Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); 695 019 Thiruvananthapuram - India
| | - Sunil Varughese
- Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); 695 019 Thiruvananthapuram - India
- Academy of Scientific and Innovative Research (AcSIR); National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); 695 019 Thiruvananthapuram - India
| | - Vijay Nair
- Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); 695 019 Thiruvananthapuram - India
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Chiu HC, Tonks IA. Trimethylsilyl-Protected Alkynes as Selective Cross-Coupling Partners in Titanium-Catalyzed [2+2+1] Pyrrole Synthesis. Angew Chem Int Ed Engl 2018; 57:6090-6094. [PMID: 29573100 DOI: 10.1002/anie.201800595] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Indexed: 11/05/2022]
Abstract
Trimethylsilyl (TMS)-protected alkynes served as selective alkyne cross-coupling partners in titanium-catalyzed [2+2+1] pyrrole synthesis. Reactions of TMS-protected alkynes with internal alkynes and azobenzene under the catalysis of titanium imido complexes yielded pentasubstituted 2-TMS-pyrroles with greater than 90 % selectivity over the other nine possible pyrrole products. The steric and electronic effects of the TMS group were both identified to play key roles in this highly selective pyrrole synthesis. This strategy provides a convenient method to synthesize multisubstituted pyrroles as well as an entry point for further pyrrole diversification through facile modification of the resulting 2-silyl pyrrole products, as demonstrated through a short formal synthesis of the marine natural product lamellarin R.
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Affiliation(s)
- Hsin-Chun Chiu
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Sreet SE, Minneapolis, MN, 55455, USA
| | - Ian A Tonks
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Sreet SE, Minneapolis, MN, 55455, USA
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11
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Chiu H, Tonks IA. Trimethylsilyl‐Protected Alkynes as Selective Cross‐Coupling Partners in Titanium‐Catalyzed [2+2+1] Pyrrole Synthesis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800595] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Hsin‐Chun Chiu
- Department of Chemistry University of Minnesota—Twin Cities 207 Pleasant Sreet SE Minneapolis MN 55455 USA
| | - Ian A. Tonks
- Department of Chemistry University of Minnesota—Twin Cities 207 Pleasant Sreet SE Minneapolis MN 55455 USA
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