1
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Li S, Pan M, Shen Y, Li Y, Li W. A Synthesis of α-Alkyl Cycloenones by Pd-Catalyzed Suzuki-Miyaura Coupling with Cyclic Morita-Baylis-Hillman Adducts. J Org Chem 2024; 89:5239-5249. [PMID: 38587356 DOI: 10.1021/acs.joc.3c02530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
We herein disclose a Pd-catalyzed Suzuki-Miyaura coupling of cyclic Morita-Baylis-Hillman adducts with organoboronic acids under mild conditions, which allows for a rapid access to diverse α-alkyl substituted cycloenones. The advantage of this method resides in the employment of functionalized allyl alcohols as the unprecedented electrophilic partners in the absence of external activators.
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Affiliation(s)
- Shangzhang Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P R China
| | - Mengni Pan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P R China
| | - Yue Shen
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P R China
| | - Yang Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P R China
| | - Wanfang Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P R China
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2
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Isbrandt ES, Chapple DE, Tu NTP, Dimakos V, Beardall AMM, Boyle PD, Rowley CN, Blacquiere JM, Newman SG. Controlling Reactivity and Selectivity in the Mizoroki-Heck Reaction: High Throughput Evaluation of 1,5-Diaza-3,7-diphosphacyclooctane Ligands. J Am Chem Soc 2024; 146:5650-5660. [PMID: 38359357 DOI: 10.1021/jacs.3c14612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
We report a high throughput evaluation of the Mizoroki-Heck reaction of diverse olefin coupling partners. Comparison of different ligands revealed the 1,5-diaza-3,7-diphosphacyclooctane (P2N2) scaffold to be more broadly applicable than common "gold standard" ligands, demonstrating that this family of readily accessible diphosphines has unrecognized potential in organic synthesis. In particular, two structurally related P2N2 ligands were identified to enable the regiodivergent arylation of styrenes. By simply altering the phosphorus substituent from a phenyl to tert-butyl group, both the linear and branched Mizoroki-Heck products can be obtained in high regioisomeric ratios. Experimental and computational mechanistic studies were performed to further probe the origin of selectivity, which suggests that both ligands coordinate to the metal in a similar manner but that rigid positioning of the phosphorus substituent forces contact with the incoming olefin in a π-π interaction (for P-Ph ligands) or with steric clash (for P-tBu ligands), dictating the regiocontrol.
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Affiliation(s)
- Eric S Isbrandt
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie Private, Ottawa, Ontario K1N 6N5, Canada
| | - Devon E Chapple
- Department of Chemistry, Western University, 1151 Richmond Street, London, Ontario N6A 3K7, Canada
| | - Nguyen Thien Phuc Tu
- Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
| | - Victoria Dimakos
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie Private, Ottawa, Ontario K1N 6N5, Canada
| | - Anne Marie M Beardall
- Department of Chemistry, Western University, 1151 Richmond Street, London, Ontario N6A 3K7, Canada
| | - Paul D Boyle
- Department of Chemistry, Western University, 1151 Richmond Street, London, Ontario N6A 3K7, Canada
| | - Christopher N Rowley
- Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
| | - Johanna M Blacquiere
- Department of Chemistry, Western University, 1151 Richmond Street, London, Ontario N6A 3K7, Canada
| | - Stephen G Newman
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie Private, Ottawa, Ontario K1N 6N5, Canada
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3
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Polimera SR, Ilangovan A, Subbaiah MAM. Examining the Scope of Deriving β-Aryl Enones from Enol Silanes as Ketone Equivalents via Pd(II)-Mediated Sequential Dehydrosilylation and Arylation. J Org Chem 2023. [PMID: 37192466 DOI: 10.1021/acs.joc.3c00502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Silyl enol ethers were examined as a masked source of saturated ketones to derive β-aryl enones and their derivatives by dehydrosilylation to generate enones in situ and subsequent oxidative arylation with arylboronic acids as transmetallation coupling partners using relayed Pd(II) catalysis in one pot under base-free conditions. Oxygen was found to be an efficient and green oxidant to enable both dehydrosilylation of enol silanes and arylation. Additionally, arylation conditions can be custom-designed to take advantage of aryl halides as an alternative source of arylating agents. The preparative scope was investigated with 35 examples (up to 95% yield), and mechanistic studies implied a cationic Pd(II)-based catalytic system.
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Affiliation(s)
- Subba Rao Polimera
- Department of Medicinal Chemistry, Biocon Bristol Myers Squibb R&D Centre, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore 560099, Karnataka, India
- Department of Chemistry, Bharathidasan University, Palkalaiperur, Thiruchirapalli 620024, Tamil Nadu, India
| | - Andivelu Ilangovan
- Department of Chemistry, Bharathidasan University, Palkalaiperur, Thiruchirapalli 620024, Tamil Nadu, India
| | - Murugaiah A M Subbaiah
- Department of Medicinal Chemistry, Biocon Bristol Myers Squibb R&D Centre, Biocon Park, Bommasandra IV Phase, Jigani Link Road, Bangalore 560099, Karnataka, India
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4
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Dimakos V, Canterbury DP, Monfette S, Roosen PC, Newman SG. A Morita–Baylis–Hillman Inspired Cross-Coupling Strategy for the Direct α-Arylation of Cyclic Enones. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Victoria Dimakos
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Daniel P. Canterbury
- Pfizer Medicine Design, Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States
| | - Sebastien Monfette
- Pfizer Chemical Research and Development, Pfizer Inc., Groton, Connecticut 06340, United States
| | - Philipp C. Roosen
- Pfizer Chemical Research and Development, Pfizer Inc., Groton, Connecticut 06340, United States
| | - Stephen G. Newman
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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5
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Gowala TN, Chaudhari P, Pabba J, Sawant K, Pal S, Ghorai SK. Synthesis of 2,3,4-Trisubstituted 2-Cyclopentenones via Sequential Functionalization of 2-Cyclopentenone. J Org Chem 2021; 86:10812-10818. [PMID: 34255508 DOI: 10.1021/acs.joc.1c01039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of differently substituted 2,3,4-triarylcyclopent-2-en-1-ones from 2-cyclopentenone via sequential functionalization of a novel 2,4-dibromo-3-(4-methoxyphenyl) cyclopent-2-en-1-one intermediate has been developed. The process provides access to selective arylation at C-4 and C-2 with a broader substrates scope, which includes heteroaryl and alkyl substitution at C-2.
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Affiliation(s)
- Tarak N Gowala
- Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim, Ilhas, North Goa, Goa India, 403110
| | - Pankaj Chaudhari
- Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim, Ilhas, North Goa, Goa India, 403110
| | - Jagadish Pabba
- Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim, Ilhas, North Goa, Goa India, 403110
| | - Krishna Sawant
- Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim, Ilhas, North Goa, Goa India, 403110
| | - Sitaram Pal
- Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim, Ilhas, North Goa, Goa India, 403110
| | - Sujit K Ghorai
- Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim, Ilhas, North Goa, Goa India, 403110
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6
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Wen ZK, Wu XX, Bao WK, Xiao JJ, Chao JB. Palladium-Catalyzed Regioselective Coupling Cyclohexenone into Indoles: Atom-Economic Synthesis of β-Indolyl Cyclohexenones and Derivatization Applications. Org Lett 2020; 22:4898-4902. [PMID: 32515596 DOI: 10.1021/acs.orglett.0c01763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Herein, we report a palladium-catalyzed dehydrogenative cross-coupling of indoles with cyclic enones to give β-indolyl cyclic enones under mild and neutral reaction conditions. The key to the success is to explore a mild condition, which ensures the indole C-H activation and subsequent syn β-hydride elimination through rapid enolization isomerization of Pd(II)-enolate while suppressing other undesired side reactions. Synthetic utility has also been demonstrated in the flexible transformation of the coupling products to meta-phenols and benzo[a]carbazoles.
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Affiliation(s)
- Zhen-Kang Wen
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Xiao-Xue Wu
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Wen-Kai Bao
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Jing-Jing Xiao
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Jian-Bin Chao
- Scientific Instrument Center, Shanxi University, Taiyuan 030006, China
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7
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Affiliation(s)
- Benjamin R. Walker
- Department of Chemistry and Biochemistry, The Ohio State University, 151 W. Woodruff Avenue, Columbus, Ohio 43210, United States
| | - Christo S. Sevov
- Department of Chemistry and Biochemistry, The Ohio State University, 151 W. Woodruff Avenue, Columbus, Ohio 43210, United States
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8
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Wirwis A, Trzeciak AM. Ligand‐free palladium‐catalyzed tandem pathways for the synthesis of 4,4‐diarylbutanones and 4,4‐diaryl‐3‐butenones under microwave conditions. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4870] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anna Wirwis
- Faculty of ChemistryUniversity of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
| | - Anna M. Trzeciak
- Faculty of ChemistryUniversity of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
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9
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Wen ZK, Song TT, Liu YF, Chao JB. Palladium-catalyzed dehydrogenative coupling of cyclic enones with thiophenes: a rapid access to β-heteroarylated cyclic enones. Chem Commun (Camb) 2018; 54:3668-3671. [DOI: 10.1039/c8cc01059e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A dehydrogenative coupling reaction of cyclic enones with thiophenes through palladium-catalyzed C–H functionalization is reported herein. Further molecular transformations of the coupling products to synthetically useful meta-heteroarylated phenols are also demonstrated.
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Affiliation(s)
- Zhen-Kang Wen
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Ting-Ting Song
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Yu-Fang Liu
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Jian-Bin Chao
- Scientific Instrument Center
- Shanxi University
- Taiyuan 030006
- China
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10
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Liu X, Chen J, Ma T. Catalytic dehydrogenative aromatization of cyclohexanones and cyclohexenones. Org Biomol Chem 2018; 16:8662-8676. [DOI: 10.1039/c8ob02351d] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Prompted by the scant attention paid by published literature reviews to the comprehensive catalytic dehydrogenative aromatization of cyclohexa(e)nones, this review describes recent methods developed to-date involving transition-metal-catalyzed oxidative aromatization and metal-free strategies for the transformation of cyclohexa(e)nones to substituted phenols.
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Affiliation(s)
- Xueli Liu
- College of Material and Chemical Engineering
- Chuzhou University
- Chuzhou
- China
| | - Jun Chen
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou
- China
- Department of Biomedical and Pharmaceutical Sciences
| | - Tianlin Ma
- College of Material and Chemical Engineering
- Chuzhou University
- Chuzhou
- China
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11
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Pan WJ, Wang ZX. Nickel-catalyzed cross-coupling of β-carbonyl alkenyl pivalates with arylzinc chlorides. Org Biomol Chem 2018; 16:1029-1036. [DOI: 10.1039/c7ob02947k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of β-carbonyl alkenyl pivalates with arylzinc reagents was carried out via nickel-catalyzed C–O bond cleavage, forming 3-aryl-substituted α,β-unsaturated carbonyl compounds in moderate to excellent yields.
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Affiliation(s)
- Wen-Jing Pan
- CAS Key Laboratory of Soft Matter Chemistry
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Zhong-Xia Wang
- CAS Key Laboratory of Soft Matter Chemistry
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry
- University of Science and Technology of China
- Hefei
- P. R. China
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12
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Abstract
This review highlights the use of the oxidative boron Heck reaction in enantioselective Heck-type couplings.
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Affiliation(s)
- A.-L. Lee
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh EH14 4AS
- UK
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13
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Raoufmoghaddam S, Mannathan S, Minnaard AJ, de Vries JG, Reek JNH. Palladium(0)/NHC-Catalyzed Reductive Heck Reaction of Enones: A Detailed Mechanistic Study. Chemistry 2015; 21:18811-20. [DOI: 10.1002/chem.201503217] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 09/22/2015] [Indexed: 01/01/2023]
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14
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Mannathan S, Raoufmoghaddam S, Reek JNH, de Vries JG, Minnaard AJ. Palladium(II) Acetate Catalyzed Reductive Heck Reaction of Enones; A Practical Approach. ChemCatChem 2015. [DOI: 10.1002/cctc.201500760] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Subramaniyan Mannathan
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 7 9747 AG Groningen The Netherlands), Fax: (+31) 50-363-429
| | - Saeed Raoufmoghaddam
- Van ‘t Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Joost N. H. Reek
- Van ‘t Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Johannes G. de Vries
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 7 9747 AG Groningen The Netherlands), Fax: (+31) 50-363-429
- Leibniz-Institut für Katalyse e.V. an der; Universität Rostock; Albert-Einstein-Strasse 29a 18059 Rostock Germany
| | - Adriaan J. Minnaard
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 7 9747 AG Groningen The Netherlands), Fax: (+31) 50-363-429
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15
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16
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Walker SE, Lamb CJC, Beattie NA, Nikodemiak P, Lee AL. Oxidative Heck desymmetrisation of 2,2-disubstituted cyclopentene-1,3-diones. Chem Commun (Camb) 2015; 51:4089-92. [DOI: 10.1039/c5cc00407a] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Oxidative Heck couplings have been successfully developed for 2,2-disubstituted cyclopentene-1,3-diones. The direct coupling onto the 2,2-disubstituted cyclopentene-1,3-dione core provides a novel, expedient and useful way of desymmetrising all-carbon quaternary centres.
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Affiliation(s)
- S. E. Walker
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - C. J. C. Lamb
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - N. A. Beattie
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - P. Nikodemiak
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - A.-L. Lee
- Institute of Chemical Sciences
- School of Engineering and Physical Sciences
- Heriot-Watt University
- Edinburgh
- UK
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17
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Gigant N, Bäckvall JE. Aerobic Double Dehydrogenative Cross Coupling between Cyclic Saturated Ketones and Simple Arenes. Chemistry 2014; 20:5890-4. [DOI: 10.1002/chem.201402063] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Indexed: 11/11/2022]
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18
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Smith MR, Jang YJ, Kim JY, Ciufolini MA. Selective reactivity of electron-rich aryl iodides in the Heck arylation of disubstituted alkenes catalyzed by palladium–arylurea complexes. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.09.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Walker SE, Boehnke J, Glen PE, Levey S, Patrick L, Jordan-Hore JA, Lee AL. Ligand- and base-free Pd(II)-catalyzed controlled switching between oxidative Heck and conjugate addition reactions. Org Lett 2013; 15:1886-9. [PMID: 23578003 DOI: 10.1021/ol400539h] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A simple change of solvent allows controlled and efficient switching between oxidative Heck and conjugate addition reactions on cyclic Michael acceptor substrates, catalyzed by a cationic Pd(II) catalyst system. Both reactions are ligand- and base-free and tolerant of air and moisture, and the controlled switching sheds light on some of the factors which favor one reaction over the other.
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Affiliation(s)
- Sarah E Walker
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS Scotland, United Kingdom
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20
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21
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Izawa Y, Zheng C, Stahl SS. Aerobic oxidative Heck/dehydrogenation reactions of cyclohexenones: efficient access to meta-substituted phenols. Angew Chem Int Ed Engl 2013; 52:3672-5. [PMID: 23423740 PMCID: PMC3634920 DOI: 10.1002/anie.201209457] [Citation(s) in RCA: 129] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Indexed: 11/09/2022]
Abstract
A new dicationic PdII catalyst, employing a 6,6'-dimethylbipyridine ligand, has been identified that is capable of promoting both aerobic oxidative Heck coupling and dehydrogenation reactions of cyclohexenones. These reactions may be combined in a one-pot sequence to enable the straightforward synthesis of meta -substituted phenols.
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Affiliation(s)
| | | | - Shannon S. Stahl
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706 (USA)
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22
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Izawa Y, Zheng C, Stahl SS. Aerobic Oxidative Heck/Dehydrogenation Reactions of Cyclohexenones: Efficient Access tometa-Substituted Phenols. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209457] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Chen L, Roger J, Bruneau C, Dixneuf PH, Doucet H. Phosphine-Free Palladium Catalytic System for the Selective Direct Arylation of Furans or Thiophenes bearing Alkenes and Inhibition of Heck-Type Reaction. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100193] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Gottumukkala AL, de Vries JG, Minnaard AJ. Pd-NHC catalyzed conjugate addition versus the Mizoroki-Heck reaction. Chemistry 2011; 17:3091-5. [PMID: 21305628 DOI: 10.1002/chem.201003643] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Indexed: 11/10/2022]
Abstract
Ace of base: A catalytic system is presented that, solely by choice of the base, selectively switches between conjugate addition and the Mizoroki-Heck reaction of aryl halides with Michael acceptors (see scheme; R, R' = alkyl, aryl). For conjugate addition reactions, this avoids the preparation and use of organometallics.
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Affiliation(s)
- Aditya L Gottumukkala
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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25
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Kamisaki H, Nanjo T, Tsukano C, Takemoto Y. Domino Pd‐Catalyzed Heck Cyclization and Bismuth‐Catalyzed Hydroamination: Formal Synthesis of Elacomine and Isoelacomine. Chemistry 2010; 17:626-33. [DOI: 10.1002/chem.201002287] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Indexed: 11/07/2022]
Affiliation(s)
- Haruhi Kamisaki
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo‐ku, Kyoto 606‐8501 (Japan), Fax: (+81) 75‐753‐4532
| | - Takeshi Nanjo
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo‐ku, Kyoto 606‐8501 (Japan), Fax: (+81) 75‐753‐4532
| | - Chihiro Tsukano
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo‐ku, Kyoto 606‐8501 (Japan), Fax: (+81) 75‐753‐4532
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo‐ku, Kyoto 606‐8501 (Japan), Fax: (+81) 75‐753‐4532
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26
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Huang SH, Wu TM, Tsai FY. pH-Dependent conjugate addition of arylboronic acids to α,β-unsaturated enones catalyzed by a reusable palladium(II)/cationic 2,2′-bipyridyl system in water under air. Appl Organomet Chem 2010. [DOI: 10.1002/aoc.1654] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Cadierno V, Gimeno J, Nebra N. One-Pot Synthesis of Bicyclic Fused Cyclopentenone Derivatives from 1-Ethynylcycloalkanols and Aldehydes. ChemCatChem 2010. [DOI: 10.1002/cctc.200900269] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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28
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Martínez C, Álvarez R, Aurrecoechea JM. Palladium-Catalyzed Sequential Oxidative Cyclization/Coupling of 2-Alkynylphenols and Alkenes: A Direct Entry into 3-Alkenylbenzofurans. Org Lett 2009; 11:1083-6. [DOI: 10.1021/ol8028687] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Claudio Martínez
- Departamento de Química Orgánica, Facultad de Química, Universidade de Vigo, Lagoas-Marcosende s/n, 36310 Vigo, Spain, and Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado 644, 48080 Bilbao, Spain
| | - Rosana Álvarez
- Departamento de Química Orgánica, Facultad de Química, Universidade de Vigo, Lagoas-Marcosende s/n, 36310 Vigo, Spain, and Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado 644, 48080 Bilbao, Spain
| | - José M. Aurrecoechea
- Departamento de Química Orgánica, Facultad de Química, Universidade de Vigo, Lagoas-Marcosende s/n, 36310 Vigo, Spain, and Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado 644, 48080 Bilbao, Spain
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