1
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Zhou C, Liang Y, Li Y, Huang M, Luo Z, Yang KF, Li Z, Lai GQ, Zhang P. Rapid Access to Chiral Spiro[2.3] Lactams: Stereoselective Hydroborylation and Hydrosilylation and Remote Control of Axial Chirality by Copper-Catalyzed Desymmetrization of Spirocyclopropenes. Org Lett 2024; 26:1941-1946. [PMID: 38415590 DOI: 10.1021/acs.orglett.4c00292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Chiral spirocyclopropyl β-lactams are common motifs in bioactive compounds and pharmaceuticals. Here we disclose a diastereoselective and enantioselective hydroborylation and hydrosilylation of spirocyclopropenes, via a Cu-catalyzed desymmetrization strategy, for the rapid preparation of enantio-enriched spirocyclopropyl β-lactams. The efficient desymmetrization strategy allows the remote control of axial chirality, offering the borylated and silylated products bearing central, spiro, and axial chirality. The combination of multichiral elements would provide a novel motif for biological evaluation in potential drug discovery.
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Affiliation(s)
- Changsheng Zhou
- Hangzhou Normal University, College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou 311121, China
| | - Yixin Liang
- Hangzhou Normal University, College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou 311121, China
| | - Ying Li
- Hangzhou Normal University, College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou 311121, China
| | - Ming Huang
- Hangzhou Normal University, College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou 311121, China
| | - Ziwei Luo
- Hangzhou Normal University, College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou 311121, China
| | - Ke-Fang Yang
- Hangzhou Normal University, College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou 311121, China
| | - Ze Li
- Hangzhou Normal University, College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou 311121, China
| | - Guo-Qiao Lai
- Hangzhou Normal University, College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou 311121, China
| | - Pinglu Zhang
- Hangzhou Normal University, College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou 311121, China
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2
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Prysiazhniuk K, Polishchuk O, Shulha S, Gudzikevych K, Datsenko OP, Kubyshkin V, Mykhailiuk PK. Borylated cyclobutanes via thermal [2 + 2]-cycloaddition. Chem Sci 2024; 15:3249-3254. [PMID: 38425521 PMCID: PMC10901489 DOI: 10.1039/d3sc06600b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 01/17/2024] [Indexed: 03/02/2024] Open
Abstract
A one-step approach to borylated cyclobutanes from amides of carboxylic acids and vinyl boronates is elaborated. The reaction proceeds via the thermal [2 + 2]-cycloaddition of in situ-generated keteniminium salts.
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Affiliation(s)
- Kateryna Prysiazhniuk
- Enamine Ltd Winston Churchill St. 78 02094 Kyiv Ukraine https://www.mykhailiukchem.org
| | - Oleksandr Polishchuk
- Enamine Ltd Winston Churchill St. 78 02094 Kyiv Ukraine https://www.mykhailiukchem.org
| | - Stanislav Shulha
- Enamine Ltd Winston Churchill St. 78 02094 Kyiv Ukraine https://www.mykhailiukchem.org
| | - Kyrylo Gudzikevych
- Enamine Ltd Winston Churchill St. 78 02094 Kyiv Ukraine https://www.mykhailiukchem.org
| | - Oleksandr P Datsenko
- Enamine Ltd Winston Churchill St. 78 02094 Kyiv Ukraine https://www.mykhailiukchem.org
| | - Vladimir Kubyshkin
- Enamine Ltd Winston Churchill St. 78 02094 Kyiv Ukraine https://www.mykhailiukchem.org
| | - Pavel K Mykhailiuk
- Enamine Ltd Winston Churchill St. 78 02094 Kyiv Ukraine https://www.mykhailiukchem.org
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3
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Liashuk OS, Grygorenko OO, Volovenko YM, Waser J. Photochemical [2+2] Cycloaddition of Alkynyl Boronates. Chemistry 2023; 29:e202301650. [PMID: 37394686 DOI: 10.1002/chem.202301650] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 06/30/2023] [Accepted: 06/30/2023] [Indexed: 07/04/2023]
Abstract
A photochemical [2+2] cycloaddition of alkynyl boronates and maleimides is reported. The developed protocol provided 35-70 % yield of maleimide-derived cyclobutenyl boronates and demonstrated wide compatibility with various functional groups. The synthetic utility of the prepared building blocks was demonstrated for a range of transformations, including Suzuki cross-coupling, catalytic or metal-hydride reduction, oxidation, and cycloaddition reactions. With aryl-substituted alkynyl boronates, the products of double [2+2] cycloaddition were obtained predominantly. Using the developed protocol, a cyclobutene-derived analogue of Thalidomide was prepared in one step. Mechanistic studies supported the participation of the triplet-excited state maleimides and ground state alkynyl boronates in the key step of the process.
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Affiliation(s)
- Oleksandr S Liashuk
- Chemical Faculty, Taras Shevchenko National University of Kyїv, Kyiv, Volodymyrska Street 60, 01601, Kyїv, Ukraine
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
- Enamine Ltd., Kyiv, Winston Churchill Street 78, 02094, Kyїv, Ukraine
| | - Oleksandr O Grygorenko
- Chemical Faculty, Taras Shevchenko National University of Kyїv, Kyiv, Volodymyrska Street 60, 01601, Kyїv, Ukraine
- Enamine Ltd., Kyiv, Winston Churchill Street 78, 02094, Kyїv, Ukraine
| | - Yulian M Volovenko
- Chemical Faculty, Taras Shevchenko National University of Kyїv, Kyiv, Volodymyrska Street 60, 01601, Kyїv, Ukraine
| | - Jérôme Waser
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
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4
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Eckart-Frank IK, Wilkerson-Hill SM. Palladium-Catalyzed Trans-Selective Synthesis of Spirocyclic Cyclobutanes Using α,α-Dialkylcrotyl- and Allylhydrazones. J Am Chem Soc 2023; 145:18591-18597. [PMID: 37552631 DOI: 10.1021/jacs.3c05699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Herein, we demonstrate the use of E/Z mixtures of α,α-disubstituted crotylhydrazones to obtain spirocyclic vinylcyclobutanes in a diastereoselective fashion. We show 24 examples of a 1,1-insertion/4-exo-trig tandem process to produce these motifs. Additionally, spirocyclic alkylidene cyclobutanes can be obtained by using α,α-disubstituted allylated hydrazones (11 examples). In this study, we show that the aryl migrating group has a dramatic impact on the course of the reaction. Specifically, allylic C-H insertion products can be obtained in good yields using bromoenones as reaction partners. When Pd(0) is used with no aryl or alkenyl bromide, an intramolecular cyclopropanation reaction takes place to afford [2.1.0]-bicycles.
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Affiliation(s)
- Isaiah K Eckart-Frank
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Sidney M Wilkerson-Hill
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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5
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Egea‐Arrebola D, Goetzke FW, Fletcher SP. Rhodium-Catalyzed Asymmetric Arylation of Cyclobutenone Ketals. Angew Chem Int Ed Engl 2023; 62:e202217381. [PMID: 36728888 PMCID: PMC10946970 DOI: 10.1002/anie.202217381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 02/03/2023]
Abstract
Complex cyclobutanes are important motifs in both bioactive molecules and natural products, yet their enantioselective preparation has not been widely explored. In this work, we describe rhodium-catalyzed enantioselective additions of aryl and vinyl boronic acids to cyclobutenone ketals. This transformation involves enantioselective carbometalation to give cyclobutyl-rhodium intermediates, followed by β-oxygen elimination to afford enantioenriched enol ethers. Overall, this addition serves as a surrogate for Rh-catalyzed 1,4-additions to cyclobutenone.
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Affiliation(s)
- David Egea‐Arrebola
- Department of ChemistryChemistry Research LaboratoryDepartment of ChemistryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - F. Wieland Goetzke
- Department of ChemistryChemistry Research LaboratoryDepartment of ChemistryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Stephen P. Fletcher
- Department of ChemistryChemistry Research LaboratoryDepartment of ChemistryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
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6
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Li B, Liang H, Vignesh A, Zhou X, Liu Y, Ke Z. Updated Progress of the Copper-Catalyzed Borylative Functionalization of Unsaturated Molecules. Molecules 2023; 28:molecules28052252. [PMID: 36903497 PMCID: PMC10004982 DOI: 10.3390/molecules28052252] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 02/22/2023] [Accepted: 02/22/2023] [Indexed: 03/04/2023] Open
Abstract
Borylation has become a powerful method to synthesize organoboranes as versatile building blocks in organic synthesis, medicinal chemistry, and materials science. Copper-promoted borylation reactions are extremely attractive due to the low cost and non-toxicity of the copper catalyst, mild reaction conditions, good functional group tolerance, and convenience in chiral induction. In this review, we mainly updated recent advances (from 2020 to 2022) in the synthetic transformations in C=C/C≡C multiple bonds, and C=E multiple bonds mediated by copper boryl systems.
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Affiliation(s)
- Bingru Li
- School of Materials Science and Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Huayu Liang
- School of Materials Science and Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Arumugam Vignesh
- School of Materials Science and Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, China
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
- Correspondence: (A.V.); (Y.L.); (Z.K.)
| | - Xiaoyu Zhou
- School of Materials Science and Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Yan Liu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510275, China
- Correspondence: (A.V.); (Y.L.); (Z.K.)
| | - Zhuofeng Ke
- School of Materials Science and Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, China
- Correspondence: (A.V.); (Y.L.); (Z.K.)
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7
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Liang Z, Wang L, Wang Y, Wang L, Chong Q, Meng F. Cobalt-Catalyzed Diastereo- and Enantioselective Carbon-Carbon Bond Forming Reactions of Cyclobutenes. J Am Chem Soc 2023; 145:3588-3598. [PMID: 36734874 DOI: 10.1021/jacs.2c12475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Catalytic enantioselective functionalization of cyclobutenes constitutes a general and modular strategy for construction of enantioenriched complex cyclobutanes bearing multiple stereogenic centers, as chiral four-membered rings are common motifs in biologically active molecules and versatile intermediates in organic synthesis. However, enantioselective synthesis of cyclobutanes through such a strategy remained significantly limited. Herein, we report a series of unprecedented cobalt-catalyzed carbon-carbon bond forming reactions of cyclobutenes that are initiated through enantioselective carbometalation. The protocols feature diastereo- and enantioselective introduction of allyl, alkynyl, and functionalized alkyl groups. Mechanistic studies indicated an unusual 1,3-cobalt migration and subsequent β-carbon elimination cascade process occurred in the allyl addition. These new discoveries established a new elementary process for cobalt catalysis and an extension of diversity of nucleophiles for enantioselective transformations of cyclobutenes.
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Affiliation(s)
- Zhikun Liang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, China, 200032
| | - Lei Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, China, 200032
| | - Yu Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, China, 200032
| | - Lifan Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, China, 200032
| | - Qinglei Chong
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, China, 200032
| | - Fanke Meng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, China, 200032.,School of Chemistry and Material Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China, 310024
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8
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Teresa J, Velado M, Fernández de la Pradilla R, Viso A, Lozano B, Tortosa M. Enantioselective Suzuki cross-coupling of 1,2-diboryl cyclopropanes. Chem Sci 2023; 14:1575-1581. [PMID: 36794195 PMCID: PMC9906671 DOI: 10.1039/d2sc05789a] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/12/2023] [Indexed: 01/15/2023] Open
Abstract
Herein, we describe the catalytic enantioselective cross-coupling of 1,2-bisboronic esters. Prior work on group specific cross coupling is limited to the use of geminal bis-boronates. This desymmetrization provides a novel approach to prepare enantioenriched cyclopropyl boronates with three contiguous stereocenters, that could be further derivatized through selective functionalization of the carbon-boron bond. Our results suggest that transmetallation, which is the enantiodetermining step, takes place with retention of stereochemistry at carbon.
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Affiliation(s)
- Javier Teresa
- Organic Chemistry Department, Center for Innovation in Advanced Chemistry (ORFEO-CINQA), Universidad Autónoma de Madrid (UAM) 28049 Madrid Spain
| | - Marina Velado
- Instituto de Química Orgánica General (IQOG), CSIC Juan de la Cierva 3 28006 Madrid Spain
| | | | - Alma Viso
- Instituto de Química Orgánica General (IQOG), CSIC Juan de la Cierva 3 28006 Madrid Spain
| | - Blanca Lozano
- Organic Chemistry Department, Center for Innovation in Advanced Chemistry (ORFEO-CINQA), Universidad Autónoma de Madrid (UAM) 28049 Madrid Spain
| | - Mariola Tortosa
- Organic Chemistry Department, Center for Innovation in Advanced Chemistry (ORFEO-CINQA), Universidad Autónoma de Madrid (UAM) 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid (UAM) 28049 Madrid Spain
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9
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McDonald TR, Rousseaux SAL. Synthesis of 3-borylated cyclobutanols from epihalohydrins or epoxy alcohol derivatives. Chem Sci 2023; 14:963-969. [PMID: 36755731 PMCID: PMC9890513 DOI: 10.1039/d2sc06088d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022] Open
Abstract
There is an increasing interest in cyclobutanes within the medicinal chemistry community. Therefore, methods to prepare cyclobutanes that contain synthetic handles for further elaboration are of interest. Herein, we report a new approach for the synthesis of 3-borylated cyclobutanols via a formal [3 + 1]-cycloaddition using readily accessible 1,1-diborylalkanes and epihalohydrins or epoxy alcohol derivatives. 1-Substituted epibromohydrin starting materials provide access to borylated cyclobutanols containing substituents at three of the four positions on the cyclobutane core, and enantioenriched epibromohydrins lead to enantioenriched cyclobutanols with high levels of enantiospecificity (>98%). Finally, derivatization studies demonstrate the synthetic utility of both the OH and Bpin handles.
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Affiliation(s)
- Tyler R. McDonald
- Department of Chemistry, University of Toronto. 80 St. George StreetTorontoONCanada
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10
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Trammel GL, Kannangara PB, Vasko D, Datsenko O, Mykhailiuk P, Brown MK. Arylboration of Enecarbamates for the Synthesis of Borylated Saturated N-Heterocycles. Angew Chem Int Ed Engl 2022; 61:e202212117. [PMID: 36250954 PMCID: PMC9643676 DOI: 10.1002/anie.202212117] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Indexed: 11/09/2022]
Abstract
Two catalytic systems have been developed for the arylboration of endocyclic enecarbamates to deliver synthetically versatile borylated saturated N-heterocycles in good regio- and diastereoselectivities. A Cu/Pd dual catalytic reaction enables the synthesis of borylated, α-arylated azetidines, while a Ni-catalysed arylboration reaction efficiently functionalizes 5-, 6-, and 7-membered enecarbamates. In the case of the Cu/Pd-system, a remarkable additive effect was identified that allowed for broader scope. The products are synthetically useful, as demonstrated by manipulations of the boronic ester to access biologically active compounds.
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Affiliation(s)
- Grace L. Trammel
- Department of ChemistryIndiana University800 E. Kirkwood Ave.BloomingtonIN, 47401USA
| | | | | | | | - Pavel Mykhailiuk
- Enamine Ltd.Chervonotkatska 6002094KyivUkraine,Taras Shevchenko National University of KyivChemistry DepartmentVolodymyrska 6401601KyivUkraine
| | - M. Kevin Brown
- Department of ChemistryIndiana University800 E. Kirkwood Ave.BloomingtonIN, 47401USA
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11
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Cui M, Zhao ZY, Oestreich M. Boosting the Enantioselectivity of Conjugate Borylation of α,β-Disubstituted Cyclobutenones with Monooxides of Chiral C 2 -Symmetric Bis(phosphine) Ligands. Chemistry 2022; 28:e202202163. [PMID: 35816363 DOI: 10.1002/chem.202202163] [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: 07/11/2022] [Indexed: 01/07/2023]
Abstract
Chiral bis(phosphine) monooxides (BPMOs) derived from C2 -symmetric bis(phosphines) have been found to induce superior levels of enantioselection in copper-catalyzed conjugate borylation of α,β-disubstituted cyclobutenones. More precisely, enantiomeric excesses as well as chemical yields are exceedingly high with (R,R)-Bozphos as the chiral ligand while these values are low with parent (R,R)-Me-Duphos. A similar yet less pronounced effect was seen in the corresponding 1,6-addition to para-quinone methides.
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Affiliation(s)
- Ming Cui
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Zhi-Yuan Zhao
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
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12
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Trammel GL, Kannangara PB, Vasko D, Datsenko O, Mykhailiuk P, Brown MK. Arylboration of Enecarbamates for the Synthesis of Borylated Saturated N‐Heterocycles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202212117] [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)
- Grace L. Trammel
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN, 47401 USA
| | | | - Dmytro Vasko
- Enamine Ltd. Chervonotkatska 60 02094 Kyiv Ukraine
| | | | - Pavel Mykhailiuk
- Enamine Ltd. Chervonotkatska 60 02094 Kyiv Ukraine
- Taras Shevchenko National University of Kyiv Chemistry Department Volodymyrska 64 01601 Kyiv Ukraine
| | - M. Kevin Brown
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN, 47401 USA
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13
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Wu H, Qu B, Nguyen T, Lorenz JC, Buono F, Haddad N. Recent Advances in Non-Precious Metal Catalysis. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hao Wu
- Chemical Development US, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Bo Qu
- Chemical Development US, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Thach Nguyen
- Chemical Development US, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jon C. Lorenz
- Chemical Development US, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Frederic Buono
- Chemical Development US, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Nizar Haddad
- Chemical Development US, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
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14
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Liu Y, Ni D, Stevenson BG, Tripathy V, Braley SE, Raghavachari K, Swierk JR, Brown MK. Photosensitized [2+2]-Cycloadditions of Alkenylboronates and Alkenes. Angew Chem Int Ed Engl 2022; 61:e202200725. [PMID: 35446458 DOI: 10.1002/anie.202200725] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Indexed: 12/17/2022]
Abstract
A new strategy for the synthesis of highly versatile cyclobutylboronates via the photosensitized [2+2]-cycloaddition of alkenylboronates and alkenes is presented. The process is mechanistically different from other processes in that energy transfer occurs with the alkenylboronate as opposed to the other alkene. This strategy allows for the synthesis of an array of diverse cyclobutylboronates. The conversion of these adducts to other compounds as well as their utility in the synthesis of melicodenine C is demonstrated.
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Affiliation(s)
- Yanyao Liu
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - Dongshun Ni
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - Bernard G Stevenson
- Department of Chemistry, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
| | - Vikrant Tripathy
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - Sarah E Braley
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - John R Swierk
- Department of Chemistry, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
| | - M Kevin Brown
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
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15
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Liu Y, Ni D, Stevenson BG, Tripathy V, Braley SE, Raghavachari K, Swierk JR, Brown MK. Photosensitized [2+2]‐Cycloadditions of Alkenylboronates and Alkenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yanyao Liu
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - Dongshun Ni
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - Bernard G. Stevenson
- Department of Chemistry Binghamton University 4400 Vestal Parkway East Binghamton NY 13902 USA
| | - Vikrant Tripathy
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - Sarah E. Braley
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - Krishnan Raghavachari
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - John R. Swierk
- Department of Chemistry Binghamton University 4400 Vestal Parkway East Binghamton NY 13902 USA
| | - M. Kevin Brown
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
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16
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Chen J, Zhou Q, Fang H, Lu P. Dancing on Ropes ‐ Enantioselective Functionalization of Preformed Four‐membered Carbocycles. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100879] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jun Chen
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu Shanghai 200433 China
| | - Qiang Zhou
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu Shanghai 200433 China
| | - Huayi Fang
- School of Materials Science and Engineering, Tianjin Key Lab for Rare Earth Materials and Applications, Nankai University, No 38 Tongyan Road Tianjin 300350 China
| | - Ping Lu
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu Shanghai 200433 China
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17
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Michalland J, Casaretto N, Zard SZ. A Modular Access to 1,2‐ and 1,3‐Disubstituted Cyclobutylboronic Esters by Consecutive Radical Additions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jean Michalland
- Laboratoire de Synthèse Organique CNRS UMR 7652 Ecole polytechnique 91128 Palaiseau Cedex France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moleculaire CNRS UMR 9168 Ecole polytechnique 91128 Palaiseau Cedex France
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique CNRS UMR 7652 Ecole polytechnique 91128 Palaiseau Cedex France
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18
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Goetzke FW, Sidera M, Fletcher SP. Catalytic asymmetric hydrometallation of cyclobutenes with salicylaldehydes. Chem Sci 2022; 13:236-240. [PMID: 35059172 PMCID: PMC8694367 DOI: 10.1039/d1sc06035j] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 12/05/2021] [Indexed: 11/21/2022] Open
Abstract
Chiral, substituted cyclobutanes are common motifs in bioactive compounds and intermediates in organic synthesis but few asymmetric routes for their synthesis are known.
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Affiliation(s)
- F. Wieland Goetzke
- Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Mireia Sidera
- Vertex Pharmaceuticals (Europe) Ltd, 86–88 Jubilee Avenue, Milton Park, Abingdon, OX14 4RW, UK
| | - Stephen P. Fletcher
- Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
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19
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Michalland J, Casaretto N, Zard SZ. A Modular Access to 1,2- and 1,3-Disubstituted Cyclobutylboronic Esters by Consecutive Radical Additions. Angew Chem Int Ed Engl 2021; 61:e202113333. [PMID: 34716652 DOI: 10.1002/anie.202113333] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Indexed: 01/22/2023]
Abstract
A modular approach to substituted cyclobutylboronic esters is described. It proceeds by successive intermolecular radical additions of xanthates to pinacolato 1-cyclobutenylboronate and to pinacolato bicyclo[1.1.0]but-1-ylboronate. Success hinges on tuning the stability of the α-boryl radical by exploiting the stabilizing influence of the trivalent boronic ester and the slightly destabilizing cyclobutane, which increases the σ-character of the radical. Reductive removal of the xanthate group finally provides a range of 1,2- and 1,3-disubstituted cyclobutylboronic esters. The contrast with cyclopropylboronic esters is striking, since the strong destabilization by the highly strained cyclopropane ring allows the first radical addition to take place but not the second. Furthermore, the first adducts are geminal xanthyl boronic esters that can be converted into cyclobutanones. This chemistry furnishes cyclobutylboronic esters that would be quite difficult to obtain otherwise and thus complements existing methods.
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Affiliation(s)
- Jean Michalland
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole polytechnique, 91128, Palaiseau Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moleculaire, CNRS UMR 9168, Ecole polytechnique, 91128, Palaiseau Cedex, France
| | - Samir Z Zard
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole polytechnique, 91128, Palaiseau Cedex, France
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20
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Simlandy AK, Lyu MY, Brown MK. Catalytic Arylboration of Spirocyclic Cyclobutenes: Rapid Access to Highly Substituted Spiro[3.n]alkanes. ACS Catal 2021; 11:12815-12820. [PMID: 35464106 DOI: 10.1021/acscatal.1c03491] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A method to achieve the synthesis of highly substituted spirocyclic cyclobutanes is disclosed. The reaction involves the catalytic arylboration of cyclobutenes. Depending on the substitution pattern of the cyclobutene, either a Cu/Pd- or a Ni-catalyzed reaction was utilized. In the case of the Cu/Pd catalyzed reactions, the identification of a Cu-complex for arylboration was crucial to observe high selectivity. The synthetic utility of the products is demonstrated, and the mechanistic details are discussed.
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Affiliation(s)
- Amit Kumar Simlandy
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave. Bloomington, Indiana 47405, United States
| | - Mao-Yun Lyu
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave. Bloomington, Indiana 47405, United States
| | - M. Kevin Brown
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave. Bloomington, Indiana 47405, United States
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