1
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Tandon N, Luxami V, Tandon R, Paul K. Recent Advances in the Synthesis of Tamoxifen and Analogues in Medicinal Chemistry. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000308] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Nitin Tandon
- School of Chemical Engineering and Physical Sciences Lovely Professional University Phagwara 144411 India
| | - Vijay Luxami
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology Patiala 147 001 India
| | - Runjhun Tandon
- School of Chemical Engineering and Physical Sciences Lovely Professional University Phagwara 144411 India
| | - Kamaldeep Paul
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology Patiala 147 001 India
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2
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Han G, Liu X, Cao Z, Sun Y. Photocatalytic Pinacol C–C Coupling and Jet Fuel Precursor Production on ZnIn2S4 Nanosheets. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01715] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Guanqun Han
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Xingwu Liu
- Syncat@Beijing, Synfuels CHINA Company, Ltd., Beijing 101407, China
| | - Zhi Cao
- Syncat@Beijing, Synfuels CHINA Company, Ltd., Beijing 101407, China
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Yujie Sun
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
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3
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Yang YC, Lin YC, Wu YK. Palladium-Catalyzed Cascade Arylation of Vinylogous Esters Enabled by Tris(1-adamantyl)phosphine. Org Lett 2019; 21:9286-9290. [DOI: 10.1021/acs.orglett.9b03071] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yi-Chi Yang
- Department of Applied Chemistry, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Yi-Ching Lin
- Department of Applied Chemistry, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Yen-Ku Wu
- Department of Applied Chemistry, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
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4
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Astarloa I, SanMartin R, Herrero MT, Domínguez E. Aqueous α-Arylation of Mono- and Diarylethanone Enolates at Low Catalyst Loading. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701596] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Iratxe Astarloa
- Department of Organic Chemistry II, Faculty of Science and Technology; University of the Basque Country (UPV/EHU) Sarriena auzoa; z/g 48940 Leioa Spain
| | - Raul SanMartin
- Department of Organic Chemistry II, Faculty of Science and Technology; University of the Basque Country (UPV/EHU) Sarriena auzoa; z/g 48940 Leioa Spain
| | - María Teresa Herrero
- Department of Organic Chemistry II, Faculty of Science and Technology; University of the Basque Country (UPV/EHU) Sarriena auzoa; z/g 48940 Leioa Spain
| | - Esther Domínguez
- Department of Organic Chemistry II, Faculty of Science and Technology; University of the Basque Country (UPV/EHU) Sarriena auzoa; z/g 48940 Leioa Spain
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5
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Tiwari PK, Sivaraman B, Aidhen IS. α,α-Diarylethylene Glycols as Valuable Precursor for Synthesis of 1,1-Diarylethenes and α,α-Diaryl Acetaldehydes. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700467] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Praveen Kumar Tiwari
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
| | | | - Indrapal Singh Aidhen
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
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6
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Tehri P, Aegurula B, Peddinti RK. Iodine-catalysed regioselective synthesis of β -hydroxysulfides. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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7
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Yang C, Gao S, Yao H, Lin A. Rhodium-Catalyzed Hydroacylation of para-Quinone Methides with Salicylaldehydes: An Approach to α,α-Diaryl-2-Hydroxy Acetophenones. J Org Chem 2016; 81:11956-11964. [DOI: 10.1021/acs.joc.6b01859] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Chi Yang
- State Key Laboratory of Natural
Medicines (SKLNM) and Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Shang Gao
- State Key Laboratory of Natural
Medicines (SKLNM) and Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural
Medicines (SKLNM) and Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural
Medicines (SKLNM) and Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
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8
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Chen T, Li YF, An Y, Zhang FM. Iron-Catalyzed α-Arylation of Deoxybenzoins with Arenes through an Oxidative Dehydrogenative Approach. Org Lett 2016; 18:4754-7. [DOI: 10.1021/acs.orglett.6b02516] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tao Chen
- State Key Laboratory of Applied
Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yi-Fan Li
- State Key Laboratory of Applied
Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yang An
- State Key Laboratory of Applied
Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Fu-Min Zhang
- State Key Laboratory of Applied
Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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9
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10
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SanMartin R, Herrero MT, Domínguez E. New Copper, Palladium and Nickel Catalytic Systems: An Evolution towards More Efficient Procedures. CHEM REC 2016; 16:1082-95. [PMID: 27027861 DOI: 10.1002/tcr.201500289] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Indexed: 12/15/2022]
Abstract
Metal-catalysed reactions are a fundamental tool in synthetic chemistry. Increasingly challenging transformations can be accomplished only by means of certain metal catalysts. However, there still remains the need for a substantial decrease of the amount of catalyst, for better reuse or recycling of such active species, and for the avoidance of relatively toxic solvents in favour of environmentally friendly media. These facts apply to copper-, palladium-, and nickel-catalysed cross-coupling reactions, direct arylations, and oxidative processes. This account summarises our research on the last reactions, featuring an evolution towards more sustainable procedures in this field.
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Affiliation(s)
- Raul SanMartin
- Department of Organic Chemistry II, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), University of the Basque Country (UPV/EHU), Sarriena auzoa, z/g 48940, Leioa, Spain
| | - María Teresa Herrero
- Department of Organic Chemistry II, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), University of the Basque Country (UPV/EHU), Sarriena auzoa, z/g 48940, Leioa, Spain
| | - Esther Domínguez
- Department of Organic Chemistry II, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), University of the Basque Country (UPV/EHU), Sarriena auzoa, z/g 48940, Leioa, Spain
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11
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Majhi B, Kundu D, Ranu BC. Ascorbic Acid Promoted Oxidative Arylation of Vinyl Arenes to 2-Aryl Acetophenones without Irradiation at Room Temperature under Aerobic Conditions. J Org Chem 2015; 80:7739-45. [DOI: 10.1021/acs.joc.5b00825] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Biju Majhi
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Debasish Kundu
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Brindaban C. Ranu
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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12
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Huang W, Rong HY, Xu J. Cyclic α-Alkoxyphosphonium Salts from (2-(Diphenylphosphino)phenyl)methanol and Aldehydes and Their Application in Synthesis of Vinyl Ethers and Ketones via Wittig Olefination. J Org Chem 2015; 80:6628-38. [PMID: 26067375 DOI: 10.1021/acs.joc.5b01031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cyclic α-alkoxyphosphonium salts have been synthesized from (2-(diphenylphosphino)phenyl)methanol and aldehydes in 36-89% yields. These phosphonium salts are bench-stable solids and undergo Wittig olefination with aldehydes under basic conditions (K2CO3 or t-BuOK) to form benzylic vinyl ethers, which are readily hydrolyzed to 1,2-disubstituted ethanones under acidic conditions. The formation mechanism of these phosphonium salts via hemiacetal is also proposed.
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Affiliation(s)
- Wenhua Huang
- Department of Chemistry, Tianjin University, 92 Weijin Road, Tianjin 300072, P. R. China
| | - Hong-Ying Rong
- Department of Chemistry, Tianjin University, 92 Weijin Road, Tianjin 300072, P. R. China
| | - Jie Xu
- Department of Chemistry, Tianjin University, 92 Weijin Road, Tianjin 300072, P. R. China
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13
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Chang MY, Chen YC, Chan CK. Palladium-mediated α-arylation of β-ketosulfones: application to the synthesis of functionalized sulfonyl phenanthrenes. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.12.070] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Kumar A, Singh TV, Thomas SP, Venugopalan P. Friedel-Crafts Arylation of α-Hydroxy Ketones: Synthesis of 1,2,2,2-Tetraarylethanones. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403438] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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15
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Sivanandan ST, Shaji A, Ibnusaud I, Seechurn CCCJ, Colacot TJ. Palladium-Catalyzed α-Arylation Reactions in Total Synthesis. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403301] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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17
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Kothapalli RB, Niddana R, Balamurugan R. Synthesis of Chiral α-Diarylacetic Esters by Stereospecific 1,2-Aryl Migration Promoted by in Situ Generated Acetals from Benzoins. Org Lett 2014; 16:1278-81. [DOI: 10.1021/ol500292c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Raveendra Babu Kothapalli
- School of Chemistry, University of Hyderabad, Dr. C. R. Rao Road, Gachibowli, Hyderabad 500046, India
| | - Ramana Niddana
- School of Chemistry, University of Hyderabad, Dr. C. R. Rao Road, Gachibowli, Hyderabad 500046, India
| | - Rengarajan Balamurugan
- School of Chemistry, University of Hyderabad, Dr. C. R. Rao Road, Gachibowli, Hyderabad 500046, India
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18
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Priebbenow DL, Zou LH, Becker P, Bolm C. The Disubstitution of Acetals to Prepare δ,δ-Bis(aryl) β-Keto Esters. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300446] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Danoun G, Tlili A, Monnier F, Taillefer M. Direct Copper-Catalyzed α-Arylation of Benzyl Phenyl Ketones with Aryl Iodides: Route towards Tamoxifen. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206024] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Danoun G, Tlili A, Monnier F, Taillefer M. Direct Copper-Catalyzed α-Arylation of Benzyl Phenyl Ketones with Aryl Iodides: Route towards Tamoxifen. Angew Chem Int Ed Engl 2012; 51:12815-9. [DOI: 10.1002/anie.201206024] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Revised: 09/12/2012] [Indexed: 11/07/2022]
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21
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22
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Laloo BM, Mecadon H, Rohman MR, Kharbangar I, Kharkongor I, Rajbangshi M, Nongkhlaw R, Myrboh B. Reaction of Selenium Dioxide with Aromatic Ketones in the Presence of Boron Triflouride Etherate: A Protocol for the Synthesis of Triarylethanones. J Org Chem 2011; 77:707-12. [DOI: 10.1021/jo201985n] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Badaker M. Laloo
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, Meghalaya, India
| | - Hormi Mecadon
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, Meghalaya, India
| | - Md. Rumum Rohman
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, Meghalaya, India
| | - Iadeishisha Kharbangar
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, Meghalaya, India
| | - Icydora Kharkongor
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, Meghalaya, India
| | - Mantu Rajbangshi
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, Meghalaya, India
| | - Rishanlang Nongkhlaw
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, Meghalaya, India
| | - Bekington Myrboh
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, Meghalaya, India
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23
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Balasubramaniam S, Kommidi H, Aidhen IS. Weinreb amide based building blocks for convenient access to 1,1-diarylethenes and isocombretastatin analogues. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.03.072] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Bugarin A, Connell BT. A highly active and selective palladium pincer catalyst for the formation of α-aryl ketones via cross-coupling. Chem Commun (Camb) 2011; 47:7218-20. [DOI: 10.1039/c1cc12071a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Moreno I, SanMartin R, Inés B, Churruca F, Domínguez E. Taylor-made palladium–pincer complexes: A new source of more efficient catalysts for sustainable organic synthesis. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.03.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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26
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Bellina F, Rossi R. Transition metal-catalyzed direct arylation of substrates with activated sp3-hybridized C-H bonds and some of their synthetic equivalents with aryl halides and pseudohalides. Chem Rev 2010; 110:1082-146. [PMID: 19610600 DOI: 10.1021/cr9000836] [Citation(s) in RCA: 769] [Impact Index Per Article: 54.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fabio Bellina
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via Risorgimento 35, 56125 Pisa, Italy
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27
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Johansson CCC, Colacot TJ. Metal-catalyzed alpha-arylation of carbonyl and related molecules: novel trends in C-C bond formation by C-H bond functionalization. Angew Chem Int Ed Engl 2010; 49:676-707. [PMID: 20058282 DOI: 10.1002/anie.200903424] [Citation(s) in RCA: 597] [Impact Index Per Article: 42.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Alpha-arylated carbonyl compounds are commonly occurring motifs in biologically interesting molecules and are therefore of high interest to the pharmaceutical industry. Conventional procedures for their synthesis often result in complications in scale-up, such as the use of stoichiometric amounts of toxic reagents and harsh reaction conditions. Over the last decade, significant efforts have been directed towards the development of metal-catalyzed alpha-arylations of carbonyl compounds as an alternative synthetic approach that operates under milder conditions. This Review summarizes the developments in this area to date, with a focus on how the substrate scope has been expanded through selection of the most appropriate synthetic method, such as the careful choice of ligands, precatalysts, bases, and reaction conditions.
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28
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Johansson C, Colacot T. Metallkatalysierte α-Arylierungen von Carbonylen und verwandten Molekülen: aktuelle Trends bei der C-C-Kupplung über C-H-Funktionalisierung. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200903424] [Citation(s) in RCA: 226] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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29
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McGlacken GP, Fairlamb IJS. Palladium‐Catalysed Cross‐Coupling and Related Processes: Some Interesting Observations That Have Been Exploited in Synthetic Chemistry. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900139] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gerard P. McGlacken
- Department of Chemistry, University College Cork, Cork, Ireland, Fax: +353‐21‐4274097
| | - Ian J. S. Fairlamb
- Department of Chemistry, University of York, Heslington YO10 5DD, UK, Fax: +44‐1904‐433433
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30
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Scribner A, Moore JA, Ouvry G, Fisher M, Wyvratt M, Leavitt P, Liberator P, Gurnett A, Brown C, Mathew J, Thompson D, Schmatz D, Biftu T. Synthesis and biological activity of anticoccidial agents: 2,3-diarylindoles. Bioorg Med Chem Lett 2009; 19:1517-21. [PMID: 19195883 DOI: 10.1016/j.bmcl.2009.01.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2008] [Revised: 12/26/2008] [Accepted: 01/06/2009] [Indexed: 10/21/2022]
Abstract
Novel 2,3-diarylindoles bearing an amine substituent at the indole 5- and 6-positions have been synthesized and evaluated as anticoccidial agents in both in vitro and in vivo assays. Both subnanomolar in vitro activity and broad spectrum in vivo potency were detected for several compounds, particularly compound 27.
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Affiliation(s)
- Andrew Scribner
- SCYNEXIS, Inc., Discovery Chemistry, PO Box 12878, Research Triangle Park, NC 27709-2878, USA
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31
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32
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Bíró AB, Kotschy A. Selective Palladium-Catalysedipso Arylation of α,α-Disubstituted Benzo[b]thien-2-ylmethanols with Aryl Bromides using PCy3 as Ligand. European J Org Chem 2007. [DOI: 10.1002/ejoc.200600929] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Carril M, SanMartin R, Churruca F, Tellitu I, Domínguez E. An advantageous route to oxcarbazepine (trileptal) based on palladium-catalyzed arylations free of transmetallating agents. Org Lett 2006; 7:4787-9. [PMID: 16235889 DOI: 10.1021/ol051291p] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] A new route to oxcarbazepine (Trileptal), the most widely prescribed antiepileptic drug, starting from commercially available 2'-aminoacetophenone and 1,2-dibromobenzene, is reported. The sequentially accomplished key steps are palladium-catalyzed intermolecular alpha-arylation of ketone enolates and intramolecular N-arylation reactions. After several experiments to establish the best conditions for both arylation processes, the target oxcarbazepine is obtained in a satisfactory overall yield, minimizing the number of steps and employing scalable catalytic procedures developed in partially aqueous media.
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Affiliation(s)
- Mónica Carril
- Kimika Organikoa II Saila, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, Bilbao, Spain
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34
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Correa A, Tellitu I, Domínguez E, SanMartin R. An advantageous synthesis of new indazolone and pyrazolone derivatives. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.09.031] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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35
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Churruca F, SanMartin R, Tellitu I, Domínguez E. PCP-Bis(phosphinite) pincer complexes: new homogeneous catalysts for α-arylation of ketones. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.03.040] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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36
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Hama T, Culkin DA, Hartwig JF. Palladium-Catalyzed Intermolecular α-Arylation of Zinc Amide Enolates under Mild Conditions. J Am Chem Soc 2006; 128:4976-85. [PMID: 16608331 DOI: 10.1021/ja056076i] [Citation(s) in RCA: 179] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The intermolecular alpha-arylation and vinylation of amides by palladium-catalyzed coupling of aryl bromides and vinyl bromides with zinc enolates of amides is reported. Reactions of three different types of zinc enolates have been developed. The reactions of aryl halides occur in high yields with isolated Reformatsky reagents generated from alpha-bromo amides, with Reformatsky reagents generated in situ from alpha-bromo amides, and with zinc enolates generated by quenching lithium enolates of amides with zinc chloride. This use of zinc enolates, instead of alkali metal enolates, greatly expands the scope of amide arylation. The reactions occur at room temperature or 70 degrees C with bromoarenes containing cyano, nitro, ester, keto, fluoro, hydroxyl, or amino functionality and with bromopyridines. Moreover, the reaction has been developed with morpholine amides, the products of which are precursors to ketones and aldehydes. The arylation of zinc enolates of amides was conducted with catalysts bearing the hindered pentaphenylferrocenyl di-tert-butylphosphine (Q-phos) or the highly reactive, dimeric, Pd(I) complex [[P(t-Bu)3]PdBr]2.
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Affiliation(s)
- Takuo Hama
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, USA
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37
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Churruca F, SanMartin R, Carril M, Urtiaga MK, Solans X, Tellitu I, Domínguez E. Direct, two-step synthetic pathway to novel dibenzo[a,c]phenanthridines. J Org Chem 2005; 70:3178-87. [PMID: 15822980 DOI: 10.1021/jo0501036] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Novel dibenzo[a,c]phenanthridines are prepared regioselectively by the application of a straightforward synthetic pathway, starting from new 3,4-diaryl- and 3,4-dihydro-3,4-diarylisoquinolines prepared via Ritter-type heterocyclization and the more classical two-step reductive amination/Bischler-Napieralski cyclization of triarylethanones, respectively. A comparative study of nonphenolic oxidative coupling methodologies provides a highly efficient procedure, based on the hypervalent iodine reagent phenyliodine(III) bis(trifluoroacetate) (PIFA), to accomplish the final coupling step.
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Affiliation(s)
- Fátima Churruca
- Kimika Organikoa II Saila, Zientzi eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
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38
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39
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Churruca F, SanMartin R, Carril M, Tellitu I, Domı́nguez E. Towards a facile synthesis of triarylethanones: palladium-catalyzed arylation of ketone enolates under homogeneous and heterogeneous conditions. Tetrahedron 2004. [DOI: 10.1016/j.tet.2003.12.065] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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40
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You J, Verkade JG. P(i-BuNCH2CH2)3N: An Efficient Ligand for the Direct α-Arylation of Nitriles with Aryl Bromides. J Org Chem 2003; 68:8003-7. [PMID: 14535776 DOI: 10.1021/jo034779h] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new catalyst system for the synthesis of alpha-aryl-substituted nitriles is reported. The bicyclic triaminophosphine P(i-BuNCH(2)CH(2))(3)N (1b) serves as an efficient and versatile ligand for the palladium-catalyzed direct alpha-arylation of nitriles with aryl bromides. Using ligand 1b, ethyl cyanoacetate and primary as well as secondary nitriles are efficiently coupled with a wide variety of aryl bromides possessing electron-rich, electron-poor, electron-neutral, and sterically hindered groups.
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Affiliation(s)
- Jingsong You
- Department of Chemistry, Gilman Hall, Iowa State University, Ames, Iowa 50011, USA
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41
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Regioselective diarylation of ketone enolates by homogeneous and heterogeneous catalysis: synthesis of triarylethanones. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01398-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Zhou C, Emrich DE, Larock RC. An efficient, regio- and stereoselective palladium-catalyzed route to tetrasubstituted olefins. Org Lett 2003; 5:1579-82. [PMID: 12713328 DOI: 10.1021/ol034435d] [Citation(s) in RCA: 123] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient, regio- and stereoselective palladium-catalyzed route to tetrasubstituted olefins has been developed, which involves the intermolecular coupling of an aryl iodide, an internal alkyne, and an arylboronic acid. The reaction involves cis-addition of the aryl group from the aryl halide to the less hindered or less electron-poor end of the alkyne, while the aryl group from the arylboronic acid adds to the other end. [reaction: see text]
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Affiliation(s)
- Chengxiang Zhou
- Department of Chemistry, Iowa State University, Ames, IA 50011, USA
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43
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Hernández S, SanMartin R, Tellitu I, Domínguez E. Toward safer methodologies for the synthesis of polyheterocyclic systems: intramolecular arylation of arenes under Mizoroki-Heck reaction conditions. Org Lett 2003; 5:1095-8. [PMID: 12659582 DOI: 10.1021/ol034148+] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] A straightforward synthesis of ibudilast-related pyrazolo[1,5-f]phenanthridines is accomplished by a tandem amine-exchange/heterocyclization of arylenaminones followed by an intramolecular biaryl coupling of the so-formed diarylpyrazoles. The direct, environmentally convenient ring-closure of the latter pyrazole intermediates, which show a close resemblance to the antiinflammatory drug celecoxib, is efficiently performed under Mizoroki-Heck reaction conditions.
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Affiliation(s)
- Susana Hernández
- Kimika Organikoa II Saila, Zientzi Fakultatea, Euskal Herriko Unibertsitatea, P.O. Box 644, 48080 Bilbao, Spain
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44
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A high speed parallel synthesis of 1,2-diaryl-1-ethanones via a clean-chemistry C–C bond formation reaction. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00407-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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