1
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Naskar G, Jeganmohan M. Palladium-Catalyzed Ligand-Enabled Cyclization of Substituted Aliphatic Carboxylic Acids with Allylic Electrophiles. Org Lett 2024; 26:6580-6585. [PMID: 39052895 DOI: 10.1021/acs.orglett.4c02129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
A palladium-catalyzed cyclization of the β-C(sp3)-H bond of aliphatic carboxylic acids with allylic electrophiles providing five-membered γ-lactones in good to excellent yields is demonstrated. An acetyl-protected aminoethyl phenyl thioether ligand is used to promote the C-H activation reaction. A diverse range of allylic electrophiles such as allyl alcohols, allyl acetates, allyl sulfones, allyl phosphonate, allyl amine, and allyl ester have been utilized for this reaction. A feasible reaction mechanism has been proposed to account for the present cyclization reaction.
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Affiliation(s)
- Gouranga Naskar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
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2
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Sachin, Sharma T, Chandra D, Sumit, Sharma U. Inherent directing group-enabled Co(III)-catalyzed C-H allylation/vinylation of isoquinolones. Chem Commun (Camb) 2024; 60:5626-5629. [PMID: 38715526 DOI: 10.1039/d4cc01146e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Co(III)-catalysed site-selective C8-allylation and vinylation of isoquinolones with allyl acetate and vinyl acetates has been accomplished. The oxo group of isoquinolone has been utilised as an inherent directing group. Based on preliminary mechanistic studies, a plausible mechanism for the developed reaction has also been delineated. Broad substrate scope with good to excellent yields and post-synthetic transformations of allylated and vinylated isoquinolines highlight the importance of the reaction.
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Affiliation(s)
- Sachin
- C-H Activation & Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Tamanna Sharma
- C-H Activation & Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India.
| | - Devesh Chandra
- C-H Activation & Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India.
| | - Sumit
- C-H Activation & Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Upendra Sharma
- C-H Activation & Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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3
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Li X, Liu J, Song R, Luo X, Luo H. Rhodium(III)-Catalyzed Switchable β-C(sp 2)-H Alkenylation and Alkylation of Acyclic Enamides with Allyl Alcohols. Org Lett 2024; 26:3673-3678. [PMID: 38639408 DOI: 10.1021/acs.orglett.4c01234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Herein, rhodium(III)-catalyzed β-C(sp2)-H alkenylation and alkylation of enamides are presented using readily accessible allylic alcohols by switching the reaction conditions. This tunable transformation has been applied to a wide range of substrates and typically proceeded with excellent regioselectivity and stereoselectivity as well as with good functional group tolerance. The catalytic system offers an efficient approach for synthesizing various functionalized enamides bearing N-(2Z,4E)-butadiene and (Z)-β-C(sp2)-H alkylated enamides. In addition, mechanistic experiments suggest that Rh(III)-catalyzed C-H activation is not related to the critical step.
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Affiliation(s)
- Xiaolan Li
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Jie Liu
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Ruixin Song
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Xuzhong Luo
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Haiqing Luo
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
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4
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Nipate DS, Meena N, Swami PN, Rangan K, Kumar A. Rh(III)-catalyzed oxidative [4+2] annulation of 2-arylquinoxalines and 2-aryl-2 H-indazoles with allyl alcohols. Chem Commun (Camb) 2024; 60:344-347. [PMID: 38078491 DOI: 10.1039/d3cc04600a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines has been developed through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols, respectively. The method features a broad substrate scope, excellent functional group tolerance, good to high yields of annulated products, and scaled-up synthesis capability. Based on a preliminary mechanistic investigation, a tentative mechanism of annulation reaction has been proposed.
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Affiliation(s)
- Dhananjay S Nipate
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan, 333031, India.
| | - Neha Meena
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan, 333031, India.
| | - Prakash N Swami
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan, 333031, India.
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Telangana, 500078, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan, 333031, India.
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5
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Costa PJ, Martins FF, Pi C, Cui X, Calhorda MJ. C-H functionalization of quinoline N-oxides catalyzed by Pd(II) complexes: a computational study. Phys Chem Chem Phys 2023; 25:22755-22767. [PMID: 37605868 DOI: 10.1039/d3cp02445h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Pd(II) catalysts, particularly the acetate salt in acetic acid, tended to favor regioselective C-H activation of quinoline N-oxides (QOs) at the C2 position. However, Pd(II)Cl2 was shown to catalyze their C-H activation at C8 and, in the presence of water, C8-H activation was accompanied by the formation of 2-quinolinones. The aim of the DFT study described in this work was to shed light on the complete mechanism of these competing catalytic reactions, when PdCl2 reacts with QO and benzaldehyde in dichloroethane. C-H activation of QO was the first step of the reaction and involved either a metallacycle, with a CQO-Pd(II) σ-bond and a C(8)-H-Pd(II) agostic bond, or an η3-QO complex, with three carbon atoms of the heteroring of QO binding PdCl2. The first situation led to the unusual C8 activation and the second to C2 activation. The σ-metallacycle undergoes C8-H activation and the energy of the TOF determining the transition state to form the product is ∼17 kcal mol-1, while for the reaction through the π-metallacycle (C2-H activation) the corresponding energy is higher (∼29 kcal mol-1) and thus is not competitive under the same conditions. The reaction proceeding through the σ-complex, activating the C8 position, is preferred, in agreement with experimental results. Both reactions involve oxidation of Pd(II) to Pd(IV) and the catalyst is regenerated. When small amounts of water are added to the reaction mixture, C8-H activation (acylation) results from the same σ-metallacycle with the same barrier, but the simultaneous formation of 2-quinolinones is more complicated. It starts with OH- attack at the C2 position, and is followed by the migration of two hydrogen atoms, and the final reductive elimination step ends with Pd(0). The higher barriers for the migration and reoxidation of Pd(0) are associated with the more demanding reaction conditions. The different reactivity of Pd(II)(OAc)2 under analogous conditions is clarified, as it is only capable of forming the above mentioned π-complex and thus of activating the C2 position of QO. This catalyst can preferentially activate the C8-H bond under rather different conditions, including in particular acetic acid medium, as shown by other authors.
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Affiliation(s)
- Paulo J Costa
- BioISI - Instituto de Biossistemas e Ciências Integrativas, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
| | - Frederico F Martins
- BioISI - Instituto de Biossistemas e Ciências Integrativas, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
| | - Chao Pi
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, People's Republic of China
| | - Xiuling Cui
- College of Chemistry, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, People's Republic of China
| | - Maria José Calhorda
- BioISI - Instituto de Biossistemas e Ciências Integrativas, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
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6
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Shui L, Liu F, Wang X, Ma C, Qiang Q, Shen M, Fang Y, Ni SF, Rong ZQ. Ligand-Induced chemodivergent nickel-catalyzed annulations via tandem isomerization/esterification and direct O-allylic substitution: Divergent access to 3,4-dihydrocoumarins and 2H-chromenes. J Catal 2023. [DOI: 10.1016/j.jcat.2023.03.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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7
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Garai B, Ali MR, Mandal R, Sundararaju B. Cp*Co(III)-Catalyzed C(8)-Nucleophilic Cascade Cyclization of Quinoline N-Oxide with 1,6-Enyne. Org Lett 2023; 25:2018-2023. [PMID: 36926924 DOI: 10.1021/acs.orglett.3c00305] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
The C(8)-selective nucleophilic cascade cyclization of quinoline N-oxide with easily derived 1,6-enyne from phenol derivatives is demonstrated. A variety of quinoline N-oxide and alkynes are discovered to be suitable for producing a library of quinoline N-oxide tethered cis-hydrobenzofurans with high yields and excellent functional group tolerance. The utility of the protocol has been accomplished by post-synthetic modification of the cyclized product. The mechanistic studies indicate a base-assisted internal electrophilic-type substitution (BIES)-type pathway for C-H bond activation, and electrospray ionization mass spectrometry (ESI-MS) analysis of the stoichiometric reaction confirmed the formation of a key five-membered cobaltacycle.
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Affiliation(s)
- Bholanath Garai
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
| | - Molla Rahamat Ali
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
| | - Rajib Mandal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
| | - Basker Sundararaju
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
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8
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Ishikawa S, Togashi R, Ueda R, Onodera S, Kochi T, Kakiuchi F. Rhodium-Catalyzed β-Acylalkylation of Allylbenzene Derivatives with Allyl Alcohols via C-C Bond Cleavage. J Org Chem 2023. [PMID: 36787647 DOI: 10.1021/acs.joc.2c02776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
We report here a deallylative β-acylalkylation reaction of allylbenzene derivatives with allyl alcohols in the presence of Cp*Rh catalysts. Allylbenzenes possessing pyridyl and pyrazolyl directing groups were converted to β-aryl ketones via the cleavage of C(aryl)-C(allyl) bonds. Synthesis of a quinoline derivative from a β-aryl ketone product bearing a pyrazolyl group was also achieved.
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Affiliation(s)
- Soya Ishikawa
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Ryo Togashi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Ryosuke Ueda
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Shunsuke Onodera
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Takuya Kochi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Fumitoshi Kakiuchi
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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9
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Mandal S, Karjee P, Saha S, Punniyamurthy T. Directed C8-H allylation of quinoline N-oxides with vinylcyclopropanes via sequential C-H/C-C activation. Chem Commun (Camb) 2023; 59:2823-2826. [PMID: 36799135 DOI: 10.1039/d2cc06646g] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
The Rh(III)-catalyzed C8-allylation of quinoline N-oxides has been accomplished using vinylcyclopropanes as an allyl source with excellent diastereoselectivity at room temperature. The C-H/C-C activation, substrate scope and natural product mutation are the important practical features.
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Affiliation(s)
- Santu Mandal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Pallab Karjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Sharajit Saha
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
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10
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Cobalt(III)-catalyzed asymmetric ring-opening of 7-oxabenzonorbornadienes via indole C-H functionalization. Nat Commun 2023; 14:1094. [PMID: 36841798 PMCID: PMC9968317 DOI: 10.1038/s41467-023-36723-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 02/13/2023] [Indexed: 02/26/2023] Open
Abstract
Asymmetric ring-opening of 7-oxabenzonorbornadienes is achieved via Co-catalyzed indole C-H functionalization. The utilization of chiral Co-catalyst consisting of a binaphthyl-derived trisubstituted cyclopentadienyl ligand resulted in high yields (up to 99%) and excellent enantioselectivity (>99% ee) for the target products with tolerance for diverse functional groups. Opposite diastereoselectivities are obtained with chiral Co-catalyst or Cp*CoI2CO. Combined experimental and computational studies suggest β-oxygen elimination being the selectivity-determining step of the reaction. Meanwhile, the reactions of 7-azabenzonorbornadiene could also be executed in a diastereodivergent manner.
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11
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Ko N, Min J, Moon J, Ismail NF, Moon K, Singh P, Mishra NK, Lee W, Kim IS. Rhodium(III)-Catalyzed Conjugate Addition of β-CF 3-Enones with Quinoline N-Oxides. J Org Chem 2023; 88:602-612. [PMID: 36524705 DOI: 10.1021/acs.joc.2c02659] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The site-selective incorporation of a trifluoromethyl group into biologically active molecules and pharmaceuticals has emerged as a central topic in medicinal chemistry and drug discovery. Herein, we demonstrate the rhodium(III)-catalyzed conjugate addition of β-trifluoromethylated enones with quinoline N-oxides, which result in the generation of β-trifluoromethyl-β'-quinolinated ketones. The reaction proceeds under mild conditions with complete functional group tolerance. The synthetic applicability was showcased by successful gram-scale experiments and valuable synthetic transformations of coupling products.
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Affiliation(s)
- Nayoung Ko
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jeonghyun Min
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Junghyea Moon
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Nuraimi Farwizah Ismail
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.,PAPRSB, Institute of Health Science, Universiti Brunei Darussalam, Bandar Seri Begawan, BE1410, Brunei Darussalam
| | - Kyeongwon Moon
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Pargat Singh
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | | | - Wonsik Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
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12
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Das J, Pal T, Ali W, Sahoo SR, Maiti D. Pd-Catalyzed Dual-γ-1,1-C(sp 3)–H Activation of Free Aliphatic Acids with Allyl–O Moieties. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02790] [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)
- Jayabrata Das
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Tanay Pal
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Wajid Ali
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sumeet Ranjan Sahoo
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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13
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Parmar D, Dhiman AK, Kumar R, Sharma AK, Sharma U. Cp*Co(III)-Catalyzed Selective C8-Olefination and Oxyarylation of Quinoline N-Oxides with Terminal Alkynes. J Org Chem 2022; 87:9069-9087. [PMID: 35758768 DOI: 10.1021/acs.joc.2c00752] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Herein we report Cp*Co(III)-catalyzed site-selective (C8)-H olefination and oxyarylation of quinoline N-oxides with terminal alkynes. The selectivity for C8-olefination and oxyarylation is sterically and electronically controlled. In the case of quinoline N-oxides (unsubstituted at the C2 position), only the olefination product was obtained irrespective of the nature of the alkynes. In contrast, oxyarylation was observed exclusively when 2-substituted quinoline N-oxides were reacted with 9-ethynylphenanthrene. However, alkynes with electron-withdrawing groups provided only olefination products with 2-substituted quinoline N-oxides. The developed strategy allowed a facile functionalization of quinoline N-oxides bearing natural molecules and an estrone-derived terminal alkyne to deliver the corresponding olefinated and oxyarylated products. To understand the reaction mechanism, control experiments, deuterium-labeling experiments, and kinetic isotope effect (KIE) studies were performed.
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Affiliation(s)
- Diksha Parmar
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ankit Kumar Dhiman
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rohit Kumar
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Akhilesh K Sharma
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Upendra Sharma
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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14
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Khake SM, Chatani N. Rhodium(III)-Catalyzed Oxidative C–H Alkylation of Aniline Derivatives with Allylic Alcohols To Produce β-Aryl Ketones. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00854] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shrikant M. Khake
- Department of Applied Chemistry, Faculty of Engineering, Suita, Osaka 565-0871, Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Suita, Osaka 565-0871, Japan
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15
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Xue S, Cristòfol À, Limburg B, Zeng Q, Kleij AW. Dual Cobalt/Organophotoredox Catalysis for Diastereo- and Regioselective 1,2-Difunctionalization of 1,3-Diene Surrogates Creating Quaternary Carbon Centers. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00660] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Sijing Xue
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Àlex Cristòfol
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Bart Limburg
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Qian Zeng
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ), the Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Catalan Institute of Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, 08010 Barcelona, Spain
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16
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Mandal R, Garai B, Sundararaju B. Weak-Coordination in C–H Bond Functionalizations Catalyzed by 3d Metals. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05267] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Rajib Mandal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh208016, India
| | - Bholanath Garai
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh208016, India
| | - Basker Sundararaju
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh208016, India
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17
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Jardim GAM, de Carvalho RL, Nunes MP, Machado LA, Almeida LD, Bahou KA, Bower JF, da Silva Júnior EN. Looking deep into C-H functionalization: the synthesis and application of cyclopentadienyl and related metal catalysts. Chem Commun (Camb) 2022; 58:3101-3121. [PMID: 35195128 DOI: 10.1039/d1cc07040a] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Metal catalyzed C-H functionalization offers a versatile platform for methodology development and a wide variety of reactions now exist for the chemo- and site-selective functionalization of organic molecules. Cyclopentadienyl-metal (CpM) complexes of transition metals and their correlative analogues have found widespread application in this area, and herein we highlight several key applications of commonly used transition-metal Cp-type catalysts. In addition, an understanding of transition metal Cp-type catalyst synthesis is important, particularly where modifications to the catalyst structure are required for different applications, and a summary of this aspect is given.
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Affiliation(s)
- Guilherme A M Jardim
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais - UFMG, Belo Horizonte, 31270-901, MG, Brazil. .,Centre for Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos, UFSCar, 13565-905, Brazil
| | - Renato L de Carvalho
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais - UFMG, Belo Horizonte, 31270-901, MG, Brazil.
| | - Mateus P Nunes
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais - UFMG, Belo Horizonte, 31270-901, MG, Brazil.
| | - Luana A Machado
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais - UFMG, Belo Horizonte, 31270-901, MG, Brazil. .,Department of Chemistry, Fluminense Federal University, Niteroi, 24020-141, RJ, Brazil
| | - Leandro D Almeida
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais - UFMG, Belo Horizonte, 31270-901, MG, Brazil.
| | - Karim A Bahou
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK.
| | - John F Bower
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK.
| | - Eufrânio N da Silva Júnior
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais - UFMG, Belo Horizonte, 31270-901, MG, Brazil.
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18
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Anugu N, Thunga S, Golla S, Kokatla HP. Iodine Catalyzed C2‐H Formamidation of Quinoline
N
‐Oxides using Isocyanides: A Metal‐Free Approach. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202100883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Naveenkumar Anugu
- Department of Chemistry National Institute of Technology Warangal Warangal Telangana 506004 India
| | - Sanjeeva Thunga
- Department of Chemistry National Institute of Technology Warangal Warangal Telangana 506004 India
| | - Sivaparwathi Golla
- Department of Chemistry National Institute of Technology Warangal Warangal Telangana 506004 India
| | - Hari Prasad Kokatla
- Department of Chemistry National Institute of Technology Warangal Warangal Telangana 506004 India
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19
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Chandra D, Manisha, Sharma U. Recent Advances in the High-Valent Cobalt-Catalyzed C-H Functionalization of N-Heterocycles. CHEM REC 2021; 22:e202100271. [PMID: 34932274 DOI: 10.1002/tcr.202100271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/21/2021] [Indexed: 12/18/2022]
Abstract
Direct functionalization of heterocycles using C-H activation widely relies on the precious metal complexes. In past decade, the use of earth abundant and inexpensive transition metal to functionalize heterocycles has become an attractive alternate strategy. This concept is also interesting due to the unique reactivity pattern of these inexpensive metals. In this context we and other research groups have utilized the high-valent cobalt complexes as an inexpensive and readily available catalyst for the functionalization of heterocycles. In this review, we intend to brief recent progress made in the area of high-valent cobalt complexes catalyzed C-H functionalization of N-containing heterocycles.
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Affiliation(s)
- Devesh Chandra
- Chemical Technology Division, CSIR-IHBT, Palampur, HP 176 061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Manisha
- Chemical Technology Division, CSIR-IHBT, Palampur, HP 176 061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Upendra Sharma
- Chemical Technology Division, CSIR-IHBT, Palampur, HP 176 061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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20
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Shi Y, Xu X, Chen X, Gao W, Zhang X. Synthesis of Cyclopentenes and Cyclohexenes Via Cobalt(II)-Catalyzed Oxidative Cyclization. J Org Chem 2021; 86:15335-15344. [PMID: 34708650 DOI: 10.1021/acs.joc.1c01900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A unique method for the synthesis of cyclopentenes and cyclohexenes has been achieved by the coupling of diketones and alkenes under cobalt(II) catalysis and dimethyl sulfoxide involvement. Under optimal conditions, the formation of five- and six-membered rings can be readily controlled by the α-position substitution of styrenes. This process is proposed to proceed through a reaction sequence of oxidative coupling (mediated by K2S2O8), regioselective alkene insertion (promoted by cobalt), and intramolecular attack of the resulting allylcobalt species on the carbonyl group or methyl group in the reactive methylene process.
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Affiliation(s)
- Yue Shi
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Xuefeng Xu
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Xinfeng Chen
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Wenchao Gao
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Xu Zhang
- Engineering Technology Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China
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21
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Ramachandran K, Anbarasan P. Cobalt-catalyzed multisubstituted allylation of the chelation-assisted C-H bond of (hetero)arenes with cyclopropenes. Chem Sci 2021; 12:13442-13449. [PMID: 34777763 PMCID: PMC8528013 DOI: 10.1039/d1sc03476f] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 09/14/2021] [Indexed: 12/04/2022] Open
Abstract
Cyclopropenes are highly strained three-membered carbocycles, which offer unique reactivity in organic synthesis. Herein, Cp*CoIII-catalyzed ring-opening isomerization of cyclopropenes to cobalt vinylcarbene has been utilized for the synthesis of multisubstituted allylarenes via directing group-assisted functionalization of C-H bonds of arenes and heteroarenes. Employing this methodology, various substituents can be introduced at all three carbons of the allyl moiety with high selectivity. The important highlights are excellent functional group tolerance, multisubstituted allylation, high selectivity, gram scale synthesis, removable directing group, and synthesis of cyclopenta[b]indoles. In addition, a potential cobaltocycle intermediate was identified and a plausible mechanism is also proposed.
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Affiliation(s)
- Kuppan Ramachandran
- Department of Chemistry, Indian Institute of Technology Madras Chennai 600036 India https://home.iitm.ac.in/anbarasansp/
| | - Pazhamalai Anbarasan
- Department of Chemistry, Indian Institute of Technology Madras Chennai 600036 India https://home.iitm.ac.in/anbarasansp/
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22
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Prabagar B, Yang Y, Shi Z. Site-selective C-H functionalization to access the arene backbone of indoles and quinolines. Chem Soc Rev 2021; 50:11249-11269. [PMID: 34486584 DOI: 10.1039/d0cs00334d] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The site-selective C-H bond functionalization of heteroarenes can eventually provide chemists with great techniques for editing and building complex molecular scaffolds. During the past decade, benzo-fused N-heterocycles such as indoles and quinolines have been among the most widely investigated organic templates. Early developments have led to site-selective C-H bond functionalization on the pyrrole and pyridine cores of indoles and quinolines; however, C-H functionalization on the benzenoid ring has remained a great challenge in catalysis. In this review, we elaborate on recent developments in the highly challenging functionalization of C-H bonds on the less-reactive benzenoid core of indoles and quinolines. These findings are mainly described as selective directing group assisted strategies, remote C-H functionalization techniques and their reaction mechanisms. The underlying principle in each strategy is elucidated, which aims to facilitate the design of a more advanced structure of heterocycles based on bioactive molecules, synthetic drugs, and material aspects. Moreover, the challenges and perspectives for catalytic C-H functionalization to access the arene backbone of indoles and quinolines are also proposed in the conclusion section.
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Affiliation(s)
- B Prabagar
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Youqing Yang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
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23
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Moseley DF, Kalepu J, Willis MC. Azine-N-oxides as effective controlling groups for Rh-catalysed intermolecular alkyne hydroacylation. Chem Sci 2021; 12:13068-13073. [PMID: 34745537 PMCID: PMC8513814 DOI: 10.1039/d1sc03915f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Accepted: 09/07/2021] [Indexed: 12/03/2022] Open
Abstract
Heterocycle-derived aldehydes are challenging substrates in metal-catalysed hydroacylation chemistry. We show that by using azine N-oxide substituted aldehydes, good reactivity can be achieved, and that they are highly effective substrates for the intermolecular hydroacylation of alkynes. Employing a Rh(i)-catalyst, we achieve a mild and scalable aldehyde C-H activation, that permits the coupling with unactivated terminal alkynes, in good yields and with high regioselectivities (up to >20 : 1 l:b). Both substrates can tolerate a broad variety of functional groups. The reaction can also be applied to diazine aldehydes that contain a free N-lone pair. We demonstrate conversion of the hydroacylation products to the corresponding azine, through a one-pot hydroacylation/deoxygenation sequence. A one-pot hydroacylation/cyclisation, using N-Boc propargylamine, additionally leads to the synthesis of a bidentate pyrrolyl ligand.
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Affiliation(s)
- Daniel F Moseley
- Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Jagadeesh Kalepu
- Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Michael C Willis
- Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
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24
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Corio A, Gravier-Pelletier C, Busca P. Regioselective Functionalization of Quinolines through C-H Activation: A Comprehensive Review. Molecules 2021; 26:5467. [PMID: 34576936 PMCID: PMC8466797 DOI: 10.3390/molecules26185467] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/30/2021] [Accepted: 09/01/2021] [Indexed: 11/16/2022] Open
Abstract
Quinoline is a versatile heterocycle that is part of numerous natural products and countless drugs. During the last decades, this scaffold also became widely used as ligand in organometallic catalysis. Therefore, access to functionalized quinolines is of great importance and continuous efforts have been made to develop efficient and regioselective synthetic methods. In this regard, C-H functionalization through transition metal catalysis, which is nowadays the Graal of organic green chemistry, represents the most attractive strategy. We aim herein at providing a comprehensive review of methods that allow site-selective metal-catalyzed C-H functionalization of quinolines, or their quinoline N-oxides counterparts, with a specific focus on their scope and limitations, as well as mechanistic aspects if that accounts for the selectivity.
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Affiliation(s)
| | | | - Patricia Busca
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR CNRS 8601, Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France; (A.C.); (C.G.-P.)
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25
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Nale SD, Aslam M, Lee YR. Installation of Diverse Succinimides at C‐8 Position of Quinoline
N
‐Oxides via Rhodium(III)‐Catalyzed C−H Functionalization. ChemistrySelect 2021. [DOI: 10.1002/slct.202102832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sagar D. Nale
- School of Chemical Engineering Yeungnam University Gyeongsan 38541 Republic of Korea
| | - Mohammad Aslam
- School of Chemical Engineering Yeungnam University Gyeongsan 38541 Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering Yeungnam University Gyeongsan 38541 Republic of Korea
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26
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Logeswaran R, Jeganmohan M. Effect of Transition Metals on Chemodivergent Cross-Coupling of Acrylamides with Vinyl Acetate via C-H Activation. Org Lett 2021; 23:5679-5683. [PMID: 34264083 DOI: 10.1021/acs.orglett.1c01797] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A novel chemodivergent cross-coupling of acrylamides and vinyl acetates has been realized via metal-catalyzed vinylic C-H activation. The selective olefinic C-H vinylation and alkenylation reaction was examined with a variety of differently functionalized acrylamides. The reaction efficiently generates a range of highly synthetically valuable butadienes with good functional group tolerance in good to moderate yields. A possible catalytic reaction mechanism involving the chelation-assisted olefinic C-H activation via an acetate-assisted deprotonation pathway is proposed.
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Affiliation(s)
- Ravichandran Logeswaran
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036 Tamil Nadu, India
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036 Tamil Nadu, India
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27
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Mandal R, Garai B, Sundararaju B. Cp*Co III-Catalyzed C(7)-H Bond Annulation of Indolines with Alkynes. J Org Chem 2021; 86:9407-9417. [PMID: 34213334 DOI: 10.1021/acs.joc.1c00713] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
An efficient protocol for the synthesis of biologically essential pyrroloquinolinones has been developed under Cp*CoIII catalysis, which involves a cascade reaction of C(7)-H alkenylation with alkynes followed by nucleophilic addition. A wide variety of internal alkynes including enyne, diyne, and ynamide and more challenging terminal alkynes were successfully employed for the annulation in good to excellent yield with high regioselectivity.
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Affiliation(s)
- Rajib Mandal
- Fine Chemical Laboratory, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India 208016
| | - Bholanath Garai
- Fine Chemical Laboratory, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India 208016
| | - Basker Sundararaju
- Fine Chemical Laboratory, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India 208016
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28
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Li Y, Fang F, Zhou J, Li J, Wang R, Liu H, Zhou Y. Rhodium‐Catalyzed C−H Activation/Annulation Cascade of Aryl Oximes and Propargyl Alcohols to Isoquinoline
N
‐Oxides. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100239] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yuan Li
- Nano Science and Technology Institute University of Science and Technology of China Suzhou 215123 People's Republic of China
- State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Feifei Fang
- State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Jianhui Zhou
- State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Jiyuan Li
- State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Run Wang
- State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Hong Liu
- State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
- School of Pharmaceutical Science and Technology Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou 310024 People's Republic of China
| | - Yu Zhou
- State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
- School of Pharmaceutical Science and Technology Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou 310024 People's Republic of China
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29
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Du Y, Wang Y, Zhao Q, Zhao L. Selective Synthesis of 5‐Alkylated and 5‐Alkenylated Chromones via Catalytic C‐H Coupling of Chromones with Allyl Alcohols. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100213] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Ya‐Zhen Du
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 Jiangsu China
| | - Yu‐Jiao Wang
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 Jiangsu China
| | - Qing‐Yang Zhao
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 Jiangsu China
| | - Li‐Ming Zhao
- School of Chemistry and Materials Science Jiangsu Normal University Xuzhou 221116 Jiangsu China
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100050 China
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30
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Ronzon Q, Zhang W, Casaretto N, Mouray E, Florent I, Nay B. Programmed Multiple C-H Bond Functionalization of the Privileged 4-hydroxyquinoline Template. Chemistry 2021; 27:7764-7772. [PMID: 33848033 DOI: 10.1002/chem.202100929] [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: 03/14/2021] [Indexed: 11/12/2022]
Abstract
The introduction of substituents on bare heterocyclic scaffolds can selectively be achieved by directed C-H functionalization. However, such methods have only occasionally been used, in an iterative manner, to decorate various positions of a medicinal scaffold to build chemical libraries. We herein report the multiple, site selective, metal-catalyzed C-H functionalization of a "programmed" 4-hydroxyquinoline. This medicinally privileged template indeed possesses multiple reactive sites for diversity-oriented functionalization, of which four were targeted. The C-2 and C-8 decorations were directed by an N-oxide, before taking benefit of an O-carbamoyl protection at C-4 to perform a Fries rearrangement and install a carboxamide at C-3. This also released the carbonyl group of 4-quinolones, the ultimate directing group to functionalize position 5. Our study highlights the power of multiple C-H functionalization to generate diversity in a biologically relevant library, after showing its strong antimalarial potential.
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Affiliation(s)
- Quentin Ronzon
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA, CNRS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Wei Zhang
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA, CNRS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Nicolas Casaretto
- Laboratoire de Chimie Moléculaire, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - Elisabeth Mouray
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR7245) Muséum national d'Histoire naturelle, CNRS, CP 52, 57 rue Cuvier, 75005, Paris, France
| | - Isabelle Florent
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR7245) Muséum national d'Histoire naturelle, CNRS, CP 52, 57 rue Cuvier, 75005, Paris, France
| | - Bastien Nay
- Laboratoire de Synthèse Organique, Ecole Polytechnique, ENSTA, CNRS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
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31
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Zhang ZZ, Liao G, Chen HM, Shi BF. Thioamide-Directed Cp*Co(III)-Catalyzed C-H Allylation of Ferrocenes. Org Lett 2021; 23:2626-2631. [PMID: 33711894 DOI: 10.1021/acs.orglett.1c00533] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Herein, the first Cp*Co(III)-catalyzed C-H allylation of ferrocene thioamides with allyl carbonates has been developed. This reaction is compatible with a wide range of functional groups, providing various allylated ferrocene derivatives in up to 90% yields. In addition, the C-H allylation protocol is also compatible with the use of vinylcyclopropanes as allylating reagents by merging C-H and C-C activation into one catalytic system. Mechanistic studies revealed that the thiocarbonyl-directing group plays a vital role in C-H activation.
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Affiliation(s)
- Zhuo-Zhuo Zhang
- School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan 610106, China
| | - Gang Liao
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Hao-Ming Chen
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, China.,Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
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32
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Sherikar MS, Devarajappa R, Prabhu KR. Dual Role of the Rhodium(III) Catalyst in C-H Activation: [4 + 3] Annulation of Amide with Allylic Alcohols to 7-Membered Lactams. J Org Chem 2021; 86:4625-4637. [PMID: 33689338 DOI: 10.1021/acs.joc.1c00048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[4 + 3] annulation of primary and secondary benzamide and cinnamamide derivatives using allyl alcohol as a coupling partner catalyzed by Rh(III) is reported, where Rh(III) is playing a dual role of an oxidant and a catalyst for C-H activation. The Rh-catalyst oxidizes allyl alcohol to its carbonyl derivative, and the in situ-generated carbonyl compound reacts with benzamide in the presence of the Rh-catalyst, forming the corresponding alkylated products. Mechanistic studies show that AgSbF6 is also playing a dual role. Apart from being a halide scavenger, AgSbF6 catalyzes the cyclization of the alkylated product, forming the desired lactam. The current method has good synthetic application and is useful for synthesizing a few biologically active compounds that can act as the dopamine D3 receptor ligand, including berberine-like analogues. The deuteration study and control experiments helped us to propose the mechanism.
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Affiliation(s)
| | - Ravi Devarajappa
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, Karnataka, India
| | - Kandikere Ramaiah Prabhu
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, Karnataka, India
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33
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34
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Tian W, Zhu Y, He Y, Wang M, Song X, Bai J, Xiao Q. Hydroxyl Assisted, Photoredox/Cobalt Co‐catalyzed Semi‐Hydrogenation and Tandem Cyclization of
o
‐Alkynylphenols for Access to 2,3‐Dihydrobenzofurans. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202000986] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Wan‐Fa Tian
- Institute of Organic Chemistry Jiangxi Science & Technology Normal University Key Laboratory of Organic Chemistry Jiangxi Province Nanchang 330013 People's Republic of China
| | - Yao Zhu
- Institute of Organic Chemistry Jiangxi Science & Technology Normal University Key Laboratory of Organic Chemistry Jiangxi Province Nanchang 330013 People's Republic of China
| | - Yong‐Qin He
- School of Pharmaceutical Science Nanchang University Nanchang 330006 People's Republic of China
| | - Mei Wang
- Institute of Organic Chemistry Jiangxi Science & Technology Normal University Key Laboratory of Organic Chemistry Jiangxi Province Nanchang 330013 People's Republic of China
| | - Xian‐Rong Song
- Institute of Organic Chemistry Jiangxi Science & Technology Normal University Key Laboratory of Organic Chemistry Jiangxi Province Nanchang 330013 People's Republic of China
| | - Jiang Bai
- Institute of Organic Chemistry Jiangxi Science & Technology Normal University Key Laboratory of Organic Chemistry Jiangxi Province Nanchang 330013 People's Republic of China
| | - Qiang Xiao
- Institute of Organic Chemistry Jiangxi Science & Technology Normal University Key Laboratory of Organic Chemistry Jiangxi Province Nanchang 330013 People's Republic of China
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35
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Shoberu A, Li CK, Qian HF, Zou JP. Copper-catalyzed, N-auxiliary group-controlled switchable transannulation/nitration initiated by nitro radicals: selective synthesis of pyridoquinazolones and 3-nitroindoles. Org Chem Front 2021. [DOI: 10.1039/d1qo01141c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Within the scope of nitration reactions, the efficiency of sensitive heteroaromatics such as indoles is often eroded by various competitive oxidative decomposition pathways.
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Affiliation(s)
- Adedamola Shoberu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Cheng-Kun Li
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Hai-Feng Qian
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Jian-Ping Zou
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
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36
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Shukla RK, Nair AM, Khan S, Volla CMR. Cobalt-Catalyzed C8-Dienylation of Quinoline-N-Oxides. Angew Chem Int Ed Engl 2020; 59:17042-17048. [PMID: 32558084 DOI: 10.1002/anie.202003216] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/25/2020] [Indexed: 12/19/2022]
Abstract
An efficient Cp*CoIII -catalyzed C8-dienylation of quinoline-N-oxides was achieved by employing allenes bearing leaving groups at the α-position as the dienylating agents. The reaction proceeds by CoIII -catalyzed C-H activation of quinoline-N-oxides and regioselective migratory insertion of the allene followed by a β-oxy elimination, leading to overall dienylation. Site-selective C-H activation was achieved with excellent selectivity under mild reaction conditions, and 30 mol % of a NaF additive was found to be crucial for the efficient dienylation. The methodology features high stereoselectivity, mild reaction conditions, and good functional-group tolerance. C8-alkenylation of quinoline-N-oxides was achieved in the case of allenes devoid of leaving groups as coupling partners. Furthermore, gram-scale preparation and preliminary mechanistic experiments were carried out to gain insights into the reaction mechanism.
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Affiliation(s)
- Rahul K Shukla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, India
| | - Akshay M Nair
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, India
| | - Salman Khan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, India
| | - Chandra M R Volla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, India
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37
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Qin P, Sun J, Wang F, Wang J, Wang H, Zhou M. Visible‐Light‐Induced C2 Alkylation of Heterocyclic N‐Oxides with N‐Hydroxyphthalimide Esters under Metal‐Free Conditions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000517] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Pi‐Tao Qin
- School of Chemistry and Materials Science Liaoning Shihua University Fushun 113001 People's Republic of China
| | - Jing Sun
- School of Chemistry and Materials Science Liaoning Shihua University Fushun 113001 People's Republic of China
| | - Fei Wang
- School of Chemistry and Materials Science Liaoning Shihua University Fushun 113001 People's Republic of China
| | - Jing‐Yun Wang
- School of Chemistry and Materials Science Liaoning Shihua University Fushun 113001 People's Republic of China
| | - He Wang
- School of Chemistry and Materials Science Liaoning Shihua University Fushun 113001 People's Republic of China
| | - Ming‐Dong Zhou
- School of Chemistry and Materials Science Liaoning Shihua University Fushun 113001 People's Republic of China
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38
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Gao K, Xu M, Cai C, Ding Y, Chen J, Liu B, Xia Y. Cobalt-Catalyzed Reductive C-O Bond Cleavage of Lignin β-O-4 Ketone Models via In Situ Generation of the Cobalt-Boryl Species. Org Lett 2020; 22:6055-6060. [PMID: 32697919 DOI: 10.1021/acs.orglett.0c02117] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An efficient and mild method for reductive C-O bond cleavage of lignin β-O-4 ketone models was developed to afford the corresponding ketones and phenols with PDI-CoCl2 as the precatalyst and diboron reagent as the reductant. The synthetic utility of the methodology was demonstrated by depolymerization of a polymeric model and gram-scale transformation. Mechanistic studies suggested that this transformation involves steps of carbonyl insertion, 1,2-Brook type rearrangement, β-oxygen elimination, and rate-limiting regeneration of the catalytic active Co-B species.
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Affiliation(s)
- Kecheng Gao
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Man Xu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Cheng Cai
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yanghao Ding
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jianhui Chen
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Bosheng Liu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
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39
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Shukla RK, Nair AM, Khan S, Volla CMR. Cobalt‐Catalyzed C8‐Dienylation of Quinoline‐
N
‐Oxides. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003216] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Rahul K. Shukla
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai India
| | - Akshay M. Nair
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai India
| | - Salman Khan
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai India
| | - Chandra M. R. Volla
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai India
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40
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Dhiman AK, Thakur A, Kumar I, Kumar R, Sharma U. Co(III)-Catalyzed C-H Amidation of Nitrogen-Containing Heterocycles with Dioxazolones under Mild Conditions. J Org Chem 2020; 85:9244-9254. [PMID: 32558566 DOI: 10.1021/acs.joc.0c01237] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A cobalt(III)-catalyzed C-8 selective C-H amidation of quinoline N-oxide using dioxazolone as an amidating reagent under mild conditions is disclosed. The reaction proceeds efficiently with excellent functional group compatibility. The utility of the current method is demonstrated by gram scale synthesis of C-8 amide quinoline N-oxide and by converting this amidated product into functionalized quinolines. Furthermore, the developed catalytic method is also applicable for C-7 amidation of N-pyrimidylindolines and ortho-amidation of benzamides.
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Affiliation(s)
- Ankit Kumar Dhiman
- Natural Product Chemistry and Process Development Division and AcSIR, CSIR-IHBT, Palampur 176061, India
| | - Ankita Thakur
- Natural Product Chemistry and Process Development Division and AcSIR, CSIR-IHBT, Palampur 176061, India
| | - Inder Kumar
- Natural Product Chemistry and Process Development Division and AcSIR, CSIR-IHBT, Palampur 176061, India
| | - Rakesh Kumar
- Natural Product Chemistry and Process Development Division and AcSIR, CSIR-IHBT, Palampur 176061, India
| | - Upendra Sharma
- Natural Product Chemistry and Process Development Division and AcSIR, CSIR-IHBT, Palampur 176061, India
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41
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42
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Sherikar MS, Devarajappa R, Prabhu KR. Weak Coordinating Carbonyl-Directed Rhodium(III)-Catalyzed C-H Activation at the C4-Position of Indole with Allyl Alcohols. J Org Chem 2020; 85:5516-5524. [PMID: 32192332 DOI: 10.1021/acs.joc.0c00277] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A weakly coordinating carbonyl-directed coupling of allyl alcohols at the C-4 position of indole derivatives under the C-H activation conditions catalyzed by Rh(III) is reported. This results in alkylation at the C-4 position of indole derivatives exclusively. The obtained product forms a tricyclic derivative under aldol reaction conditions, which can be a potential precursor for synthesizing a few alkaloid molecules such as ergot, hapalindole alkaloids, and related heterocyclic compounds.
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Affiliation(s)
| | - Ravi Devarajappa
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, Karnataka, India
| | - Kandikere Ramaiah Prabhu
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, Karnataka, India
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43
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Shi X, Xu W, Wang R, Zeng X, Qiu H, Wang M. Ketone-Directed Cobalt(III)-Catalyzed Regioselective C2 Amidation of Indoles. J Org Chem 2020; 85:3911-3920. [DOI: 10.1021/acs.joc.9b03018] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xinxia Shi
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, People’s Republic of China
| | - Weiyan Xu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, People’s Republic of China
| | - Rongchao Wang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, People’s Republic of China
| | - Xiaofei Zeng
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, People’s Republic of China
| | - Huayu Qiu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, People’s Republic of China
| | - Min Wang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, People’s Republic of China
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44
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Han JF, Guo P, Zhang XG, Liao JB, Ye KY. Recent advances in cobalt-catalyzed allylic functionalization. Org Biomol Chem 2020; 18:7740-7750. [PMID: 32940308 DOI: 10.1039/d0ob01581d] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Unlike many other state-of-the-art transition-metal-catalyzed allylic substitutions, cobalt-catalyzed allylic substitution has received much less attention from synthetic chemists for a long time despite the fact that cobalt is an earth-abundant, low-cost and thus much more sustainable option as either a reagent or a catalyst in organic synthesis. Recently, there has been an upsurge in the use of cobalt catalysis in allylic functionalization reactions, including allylic substitution, nucleophilic allylation, and Heck-type allylic functionalization, to construct synthetically significant building blocks featuring a double bond available for diverse downstream synthetic manipulations. This review highlights the current development of cobalt catalysis in allylic functionalization with an in-depth discussion of the reaction scope and mechanistic insights.
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Affiliation(s)
- Jun-Fa Han
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China.
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45
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You G, Xi D, Sun J, Hao L, Xia C. Transition-metal- and oxidant-free three-component reaction of quinoline N-oxides, sodium metabisulfite and aryldiazonium tetrafluoroborates via a dual radical coupling process. Org Biomol Chem 2019; 17:9479-9488. [PMID: 31651023 DOI: 10.1039/c9ob02106j] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A convenient and straightforward three-component transformation of quinoline N-oxides, sodium metabisulfite and aryldiazonium tetrafluoroborates has been developed, providing the target products in moderate to good yields. Compared with previous studies, the present methodology avoids the use of transition-metal catalysts and excess oxidants, providing a simple and practical alternative approach for the construction of 2-sulfonylquinolines. Control experiments indicate that a dual radical coupling process is responsible for this reaction.
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Affiliation(s)
- Guirong You
- Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271000, China.
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46
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Tanaka R, Tanimoto I, Kojima M, Yoshino T, Matsunaga S. Imidate as the Intact Directing Group for the Cobalt-Catalyzed C–H Allylation. J Org Chem 2019; 84:13203-13210. [DOI: 10.1021/acs.joc.9b01972] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ryo Tanaka
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Iku Tanimoto
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Masahiro Kojima
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Tatsuhiko Yoshino
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Shigeki Matsunaga
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
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47
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Li X, Rao J, Ouyang W, Chen Q, Cai N, Lu YJ, Huo Y. Sequential C–H and C–C Bond Cleavage: Divergent Constructions of Fused N-Heterocycles via Tunable Cascade. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03091] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xianwei Li
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Jianhang Rao
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Wensen Ouyang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Qian Chen
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Ning Cai
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yu-Jing Lu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yanping Huo
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
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48
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Singh D, Kumar GS, Kapur M. Oxazolinyl-Assisted Ru(II)-Catalyzed C–H Allylation with Allyl Alcohols and Synthesis of 4-Methyleneisochroman-1-ones. J Org Chem 2019; 84:12881-12892. [DOI: 10.1021/acs.joc.9b01536] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Diksha Singh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Gangam Srikanth Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
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49
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Li H, Wu C, Liu H, Wang J. Ruthenium(II)-Catalyzed C–H Acylmethylation between (Hetero)arenes and α-Cl Ketones/Sulfoxonium Ylides. J Org Chem 2019; 84:13262-13275. [DOI: 10.1021/acs.joc.9b01013] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Huihui Li
- Nano Science and Technology Institute, University of Science and Technology of China, 166 Ren Ai Road, Suzhou 215123, P. R. China
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, P. R. China
| | - Chenglin Wu
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, P. R. China
| | - Hong Liu
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, P. R. China
| | - Jiang Wang
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, P. R. China
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50
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Zhu G, Shi W, Gao H, Zhou Z, Song H, Yi W. Chemodivergent Couplings of N-Arylureas and Methyleneoxetanones via Rh(III)-Catalyzed and Solvent-Controlled C–H Activation. Org Lett 2019; 21:4143-4147. [PMID: 31124685 DOI: 10.1021/acs.orglett.9b01333] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guoxun Zhu
- School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Wendi Shi
- School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
- Key Laboratory of Molecular Target & Clinical Pharmacology and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Hui Gao
- Key Laboratory of Molecular Target & Clinical Pharmacology and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Zhi Zhou
- Key Laboratory of Molecular Target & Clinical Pharmacology and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Huacan Song
- School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou, Guangdong 510275, China
| | - Wei Yi
- Key Laboratory of Molecular Target & Clinical Pharmacology and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
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