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Ghosh S, Chattopadhyay SK. UNUSUAL REGIOSELECTIVITY IN PALLADIUM‐CATALYZED TANDEM C,H‐ARYLATION AND C,H‐AMIDATION OF CIS‐CINNAMYL HYDROXAMATES: FACILE SYNTHESIS OF 3‐ARYL‐2‐QUINOLONES. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Subhankar Ghosh
- University of Kalyani Faculty of Science Department of Chemistry B-block 741235 Kalyani INDIA
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2
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Wang F, Meng Q. Theoretical Insight into Ni(0)-Catalyzed Hydroarylation of Alkenes and Arylboronic Acids. J Org Chem 2020; 85:13264-13271. [PMID: 32960062 DOI: 10.1021/acs.joc.0c01629] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The density functional theory (ωB97XD functional) is employed to clarify nickel(0)/PtBu3-catalyzed hydroarylation of alkenes and arylboronic acids with methanol. The computational results reveal that this reaction goes primarily through the ligand-to-ligand H transfer from the O-H bond to the alkene coordinated with nickel, complexation of arylboronic acid to the nickel-alkyl-methoxyl intermediate, attack of methoxyl on boron, transmetalation, and reductive elimination. The formation of the branched 1,1-diarylalkane, linear 1,1-diarylalkane, and alkene-dimer is also discussed in this work.
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Affiliation(s)
- Fen Wang
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong 271018, People's Republic of China.,College of Chemistry and Chemical Engineering, Taishan University, Taian, Shandong 271021, People's Republic of China
| | - Qingxi Meng
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong 271018, People's Republic of China
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Corpas J, Mauleón P, Gómez Arrayás R, Carretero JC. anti-Hydroarylation of Activated Internal Alkynes: Merging Pd and Energy Transfer Catalysis. Org Lett 2020; 22:6473-6478. [PMID: 32806218 DOI: 10.1021/acs.orglett.0c02281] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A general catalytic anti-hydroarylation of electron-deficient internal alkynes compatible with both electron-poor and electron-rich aryl reagents is reported. This selectivity is achieved through a sequential syn-carbopalladation of the alkyne by an Ar-Pd species, followed by a tandem, Ir-photocatalyzed, counter-thermodynamic E → Z isomerization. The use of ortho-substituted boronic acids enables direct access to pharmaceutically relevant heterocyclic cores via a cascade process. Mechanistic insight into the involvement of Ar-Pd versus Pd-H as an active species is provided.
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Affiliation(s)
- Javier Corpas
- Department of Organic Chemistry, Universidad Autónoma de Madrid, c/Fco. Tomás y Valiente 7, Cantoblanco, 28049 Madrid, Spain
| | - Pablo Mauleón
- Department of Organic Chemistry, Universidad Autónoma de Madrid, c/Fco. Tomás y Valiente 7, Cantoblanco, 28049 Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madridc/Fco. Tomás y Valiente 7, Cantoblanco, 28049 Madrid, Spain
| | - Ramón Gómez Arrayás
- Department of Organic Chemistry, Universidad Autónoma de Madrid, c/Fco. Tomás y Valiente 7, Cantoblanco, 28049 Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madridc/Fco. Tomás y Valiente 7, Cantoblanco, 28049 Madrid, Spain
| | - Juan C Carretero
- Department of Organic Chemistry, Universidad Autónoma de Madrid, c/Fco. Tomás y Valiente 7, Cantoblanco, 28049 Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madridc/Fco. Tomás y Valiente 7, Cantoblanco, 28049 Madrid, Spain
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Yamamoto Y, Jiang J, Yasui T. Palladium-Catalyzed [3+2] and [2+2+2] Annulations of 4-Iodo-2-quinolones with Activated Alkynes through Selective C-H Activation. Chemistry 2020; 26:3749-3757. [PMID: 31825122 DOI: 10.1002/chem.201904558] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 12/10/2019] [Indexed: 01/30/2023]
Abstract
The palladium-catalyzed reaction of 4-iodo-2-quinolones with activated alkynes was investigated. Cyclopenta[de]quinoline-2(1 H)-ones and/or phenanthridine-6(5 H)-ones were obtained through [3+2] annulation involving aromatic C-H activation or [2+2+2] annulation involving vinylic C-H activation, respectively. Reasonable mechanisms for the formation of these annulation products have been proposed based on density functional theory calculations.
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Affiliation(s)
- Yoshihiko Yamamoto
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Jiyue Jiang
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
| | - Takeshi Yasui
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
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Ghosh S, Chattopadhyay SK. Metal‐Free Synthesis of 4‐Aryl‐2‐quinolone Derivatives by Iodine‐Mediated Intramolecular C−H Amidation. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Subhankar Ghosh
- Department of ChemistryUniversity of Kalyani, Kalyani- 741235 WB India
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Yamamoto Y. Recent Advances in Transition-Metal-Catalyzed Synthesis of 3- and/or 4-Aryl-2(1H)-Quinolones. HETEROCYCLES 2019. [DOI: 10.3987/rev-19-914] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Matsuya Y, Sugimoto K, Matsuo N, Tominaga D. Synthetic Studies on Pyrroloindolizidine Skeleton Based on Gold–Catalyzed Hydroamination–Enamine Cyclization–Ring–Closing Metathesis Strategy. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)56] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Yamamoto Y. Theoretical Study of the Copper-Catalyzed Hydroarylation of (Trifluoromethyl)alkyne with Phenylboronic Acid. J Org Chem 2018; 83:12775-12783. [PMID: 30230833 DOI: 10.1021/acs.joc.8b02215] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The copper-catalyzed hydroarylation of 1,1,1-trifluoro-2-butyne with phenylboronic acid was investigated by performing density functional theory calculations, and a plausible mechanism was proposed. The initial transmetalation step was first examined to compare the feasibility of the catalytically active copper species. Subsequently, the carbocupration of 1,1,1-trifluoro-2-butyne by the phenylcopper species was examined in terms of regioselectivity. The impacts of the alkyne terminal group and the para-substituents of phenylboronic acids on the carbocupration were also examined. Moreover, to shed light on the role of the electron-withdrawing groups on the alkyne substrates, the activation barrier for the carbocupration of 1,1,1-trifluoro-2-butyne was compared to those for several alkyne substrates bearing ester, ketone, cyano, and pentafluorophenyl groups, as well as 2-butyne, which has no electron-withdrawing group. The final protodecupration step involving methanol, acetic acid, or phenylboronic acid was examined to determine possible proton donors.
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Affiliation(s)
- Yoshihiko Yamamoto
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences , Nagoya University , Chikusa , Nagoya 464-8601 , Japan
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Yamamoto Y, Murayama T, Jiang J, Yasui T, Shibuya M. The vinylogous Catellani reaction: a combined computational and experimental study. Chem Sci 2017; 9:1191-1199. [PMID: 29675164 PMCID: PMC5885779 DOI: 10.1039/c7sc04265e] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 11/29/2017] [Indexed: 01/12/2023] Open
Abstract
In the presence of 5 mol% Pd(OAc)2, 1 equiv. of norbornene, and K2CO3, the reaction of 4-iodo-2-quinolones with tertiary o-bromobenzylic alcohols produced the desired benzopyran-fused 2-quinolones in moderate to high yields.
In the presence of 5 mol% Pd(OAc)2, 1 equiv. of norbornene, and K2CO3, the reaction of 4-iodo-2-quinolones with tertiary o-bromobenzylic alcohols produced the desired benzopyran-fused 2-quinolones in moderate to high yields. A Catellani-type mechanism involving vinylic C–H cleavage is proposed based on the results of control experiments and density functional theory calculations.
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Affiliation(s)
- Y Yamamoto
- Department of Basic Medicinal Sciences , Graduate School of Pharmaceutical Sciences , Nagoya University , Chikusa , Nagoya 464-8601 , Japan .
| | - T Murayama
- Department of Basic Medicinal Sciences , Graduate School of Pharmaceutical Sciences , Nagoya University , Chikusa , Nagoya 464-8601 , Japan .
| | - J Jiang
- Department of Basic Medicinal Sciences , Graduate School of Pharmaceutical Sciences , Nagoya University , Chikusa , Nagoya 464-8601 , Japan .
| | - T Yasui
- Department of Basic Medicinal Sciences , Graduate School of Pharmaceutical Sciences , Nagoya University , Chikusa , Nagoya 464-8601 , Japan .
| | - M Shibuya
- Department of Basic Medicinal Sciences , Graduate School of Pharmaceutical Sciences , Nagoya University , Chikusa , Nagoya 464-8601 , Japan .
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Yamamoto T, Ishibashi A, Suginome M. Rhodium-catalyzed C(sp2)–H Addition of Arylboronic Acids to Alkynes Using a Boron-based, Convertible ortho-Directing Group. CHEM LETT 2017. [DOI: 10.1246/cl.170404] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Takeshi Yamamoto
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510
| | - Aoi Ishibashi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510
| | - Michinori Suginome
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510
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Murayama T, Shibuya M, Yamamoto Y. Divergent Synthesis of Polymethoxylated 4-Aryl-2-quinolones. J Org Chem 2016; 81:11940-11949. [PMID: 27934456 DOI: 10.1021/acs.joc.6b02626] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Polymethoxylated 4-aryl-2-quinolones were synthesized from the corresponding (o-aminophenyl)propiolates via Cu-catalyzed hydroarylation and subsequent deprotection/lactam formation. Selective iodination of the C3 position of the product followed by coupling reactions of the resulting 3-iodinated 4-aryl-2-quinolone afforded 3-substituted-4-aryl-2-quinolones. Moreover, the N-benzyl protecting group was successfully replaced with other polyoxygenated benzyl groups.
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Affiliation(s)
- Tsukasa Murayama
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University , Chikusa, Nagoya 464-8601, Japan
| | - Masatoshi Shibuya
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University , Chikusa, Nagoya 464-8601, Japan
| | - Yoshihiko Yamamoto
- Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University , Chikusa, Nagoya 464-8601, Japan
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