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Chen XH, Xu YQ, Huang MG, Dong ZB, Li JW, Liu YJ. Cobalt/Salicylaldehyde-Enabled C-H Alkoxylation of Benzamides with Secondary Alcohols under Solvothermal Conditions. J Org Chem 2024; 89:9011-9018. [PMID: 38847456 DOI: 10.1021/acs.joc.4c00969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
C-O bond formation via C-H alkoxylation remains a challenge, especially coupling with a secondary alcohol, due to its low activity and sterically encumbered property. Here, we report a general and effective cobalt-catalyzed oxidative cross-coupling of benzamides with secondary alcohols via C-H alkoxylation reaction under solvothermal conditions, enabled by a salicylaldehyde/cobalt complex. The protocol features easy operation without additives, broad substrate scope, and excellent functional tolerance. The applicability is proven by the gram-scale synthesis and modification of natural products.
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Affiliation(s)
- Xiao-Hong Chen
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-Constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei Key Laboratory for Precision Synthesis of Small Molecule Pharmaceuticals, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, P. R. China
| | - Yi-Qing Xu
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-Constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei Key Laboratory for Precision Synthesis of Small Molecule Pharmaceuticals, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, P. R. China
| | - Mao-Gui Huang
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-Constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei Key Laboratory for Precision Synthesis of Small Molecule Pharmaceuticals, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, P. R. China
| | - Zhi-Bing Dong
- School of Chemistry Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Jia-Wei Li
- Institute of Medicinal Development and Application for Aquatic Disease Control, Zhoukou Key Laboratory of Small Molecule Drug Development and Application, School of Chemistry and Chemical Engineering, Zhoukou Normal University, Zhoukou 466001, P. R. China
| | - Yue-Jin Liu
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-Constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei Key Laboratory for Precision Synthesis of Small Molecule Pharmaceuticals, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, P. R. China
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2
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Zhang J, Liu C, Wu J, Tan X, Wu W, Jiang H. Palladium-Catalyzed Annulation of Tertiary Anilines with 3-Butenoic Acid via Dual C-H Bond Activation. Org Lett 2024; 26:4422-4426. [PMID: 38767940 DOI: 10.1021/acs.orglett.4c00880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Catalytic cyclization via dual C-H bond activation has evolved as a powerful strategy for building bi- and polycyclic molecules. Herein, a palladium-catalyzed annulation of tertiary anilines with 3-butenoic acid via N-α-C(sp3)-H and ortho-C(sp2)-H activation is described. The remarkable characteristics of this reaction include excellent diastereoselectivity, broad substrate scope, and good tolerance for some highly sensitive groups. In addition, the KIE experiment suggested that the C-H bond abscission is not the turnover-limiting step.
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Affiliation(s)
- Jinhui Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Chao Liu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jiahao Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiangwen Tan
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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3
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Požgan F, Grošelj U, Svete J, Štefane B, Al Mamari HH. Recent Advances in the Nickel-Catalyzed Alkylation of C-H Bonds. Molecules 2024; 29:1917. [PMID: 38731408 PMCID: PMC11085484 DOI: 10.3390/molecules29091917] [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: 03/28/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024] Open
Abstract
Functionalization of C-H bonds has emerged as a powerful strategy for converting inert, nonfunctional C-H bonds into their reactive counterparts. A wide range of C-H bond functionalization reactions has become possible by the catalysis of metals, typically from the second row of transition metals. First-row transition metals can also catalyze C-H functionalization, and they have the merits of greater earth-abundance, lower cost and better environmental friendliness in comparison to their second-row counterparts. C-H bond alkylation is a particularly important C-H functionalization reaction due to its chemical significance and its applications in natural product synthesis. This review covers Ni-catalyzed C-H bond alkylation reactions using alkyl halides and olefins as alkyl sources.
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Affiliation(s)
- Franc Požgan
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia; (F.P.); (U.G.); (J.S.); (B.Š.)
| | - Uroš Grošelj
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia; (F.P.); (U.G.); (J.S.); (B.Š.)
| | - Jurij Svete
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia; (F.P.); (U.G.); (J.S.); (B.Š.)
| | - Bogdan Štefane
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia; (F.P.); (U.G.); (J.S.); (B.Š.)
| | - Hamad H. Al Mamari
- Department of Chemistry, College of Science, Sultan Qaboos University, Muscat 123, Oman
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4
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Kanwal A, Afzal U, Zubair M, Imran M, Rasool N. Synthesis of anti-depressant molecules via metal-catalyzed reactions: a review. RSC Adv 2024; 14:6948-6971. [PMID: 38410364 PMCID: PMC10895647 DOI: 10.1039/d3ra06391g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 02/07/2024] [Indexed: 02/28/2024] Open
Abstract
Depression is one of the most mutilating conditions in the world today. It has been difficult to make advancements toward better, more effective therapies since the introduction of antidepressant medicines in the late 1950s. One important field of medicinal chemistry is the synthesis of antidepressant molecules through metal-catalyzed procedures. The important role that different transition metals, including iron, nickel, ruthenium, and others, serve as catalysts in the synthesis of antidepressants is examined in this review. Key structural motifs included in antidepressant drugs such as tricyclic antidepressants (TCAs), selective serotonin reuptake inhibitors (SSRIs), and others can be synthesized in a variety of effective ways using metal-catalyzed steps. This review examines current developments in the catalytic synthesis of antidepressants and their potential application over the previous thirteen years.
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Affiliation(s)
- Aqsa Kanwal
- Department of Chemistry, Government College University Faisalabad 38000 Pakistan +92-3085448384
| | - Uzma Afzal
- Department of Chemistry, Government College University Faisalabad 38000 Pakistan +92-3085448384
| | - Muhammad Zubair
- Department of Chemistry, Government College University Faisalabad 38000 Pakistan +92-3085448384
| | - Muhammad Imran
- Chemistry Department, Faculty of Science, King Khalid University P.O. Box 9004 Abha 61413 Saudi Arabia
| | - Nasir Rasool
- Department of Chemistry, Government College University Faisalabad 38000 Pakistan +92-3085448384
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5
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Chen Y, Lu Z, He W, Zhu H, Lu W, Shi J, Sheng J, Xie W. Rhodium-catalyzed annulation of hydrazines with vinylene carbonate to synthesize unsubstituted 1-aminoindole derivatives. RSC Adv 2024; 14:4804-4809. [PMID: 38323018 PMCID: PMC10844929 DOI: 10.1039/d3ra07466h] [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: 11/02/2023] [Accepted: 01/30/2024] [Indexed: 02/08/2024] Open
Abstract
Herein, we describe rhodium-catalysed C-H bond activation for [3 + 2] annulation using hydrazide and vinylene carbonate, providing an efficient method for synthesising unsubstituted 1-aminoindole compounds. Characterised by high yields, mild reaction conditions, and no need for external oxidants, this transformation demonstrates excellent regioselectivity and a wide tolerance for various functional groups.
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Affiliation(s)
- Yichun Chen
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Ziqi Lu
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Wenfen He
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Huanyi Zhu
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Weilong Lu
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Junjun Shi
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Jie Sheng
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
| | - Wucheng Xie
- School of Environment and Chemical Engineering, Foshan University Foshan 528000 China
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Saha S, Bhattacharyya H, Karjee P, Debnath B, Verma K, Punniyamurthy T. Expedient C-H allylation of sulfoxonium ylides: merging C-H and C-C/C-het bond activation. Chem Commun (Camb) 2023; 59:14173-14176. [PMID: 37955606 DOI: 10.1039/d3cc04507b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Sulfoxonium ylide chelation-assisted C-H allylation of arenes has been accomplished utilizing strained vinyl carbo/heterocycles as the allyl surrogates via sequential C-H and C-C/het bond activation. Broad substrate scope, Co-catalysis, selectivity, and late-stage drug mutation are the important practical features.
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Affiliation(s)
- Sharajit Saha
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Hemanga Bhattacharyya
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Pallab Karjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Bijoy Debnath
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Kshitiz Verma
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
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7
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Binnani C, Arora S, Priya B, Gupta P, Singh SK. 2-Hydroxypyridine-based Ligands as Promoter in Ruthenium(II) Catalyzed C-H Bond Activation/Arylation Reactions. Chem Asian J 2023; 18:e202300569. [PMID: 37811781 DOI: 10.1002/asia.202300569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/14/2023] [Accepted: 10/09/2023] [Indexed: 10/10/2023]
Abstract
A class of 2-hydroxypyridine based ligands are explored to achieve enhanced catalytic activity for ortho-C-H bond activation/arylation reaction over [(η6 -p-cymene)RuCl2 ]2 catalyst in water. Extensive studies using a series of substituted 2-hydroxypyridine based ligands (L1-L6) inferred that 5-trifluoromethyl-2-hydroxypyridine (L6) exhibited favorable effects to enhance the catalytic activity of Ru(II) catalyst for ortho C-H bond arylation of 2-phenylpyridine by 8 folds compared to those performed without ligands. The (η6 -p-cymene)Ru - L6 system also exhibited enhanced catalytic activity for ortho C-H bond arylation of 2-phenylpyridine using a variety of aryl halides. NMR and mass investigations inferred the presence of several ligand coordinated Ru(II) species, suggesting the involvement of these species in C-H bond activation reaction. Further in concurrence with the experimental findings, the density functional theory (DFT) calculations also evidenced the prominent role of 2-hydroxypyridine based ligands in Ru(II) catalyzed C-H bond arylation of 2-phenylpyridine with lower energy barrier for the C-H activation step.
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Affiliation(s)
- Chinky Binnani
- Catalysis Group, Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, Madhya Pradesh, India
| | - Sumangla Arora
- Computational Catalysis Center, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Bhanu Priya
- Catalysis Group, Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, Madhya Pradesh, India
| | - Puneet Gupta
- Computational Catalysis Center, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Sanjay K Singh
- Catalysis Group, Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, Madhya Pradesh, India
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8
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Ghosh A, Rana T, Bhaduri N, Pawar AB. Reverse Regioselective Cp*Co(III)-Catalyzed [4 + 2] C-H Annulation of N-Chloroamides with Vinylsilanes: Synthesis of 4-Silylated Isoquinolones and Their Synthetic Utilities. Org Lett 2023; 25:7878-7883. [PMID: 37871162 DOI: 10.1021/acs.orglett.3c03115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
We have developed a Cp*Co(III)-catalyzed reverse regioselective [4 + 2] annulation of N-chlorobenzamides/acrylamides with vinylsilanes for the synthesis of 4-silylated isoquinolones. The reaction was performed at ambient temperature under redox-neutral conditions. The reaction utilized the N-Cl bond as an internal oxidant, furnished the required products with excellent regioselectivities, and demonstrated high functional group tolerance. The synthetic utility of 4-silylated isoquinolones has been demonstrated for the preparation of 4-heteroarylated and 4-alkylated isoquinolones via metal-free C-C couplings. Additionally, 3,4-dihydroisoquinolones were synthesized via protodesilylation of 4-silylated isoquinolones, thus making vinylsilane an ethylene surrogate.
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Affiliation(s)
- Arijit Ghosh
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh 175005, India
| | - Tamanna Rana
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh 175005, India
| | - Nilanjan Bhaduri
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh 175005, India
| | - Amit B Pawar
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh 175005, India
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9
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Al Mamari HH, Borel J, Hickey A, Courtney E, Merz J, Zhang X, Friedrich A, Marder TB, McGlacken GP. Regioselective Iridium-Catalyzed C8-H Borylation of 4-Quinolones via Transient O-Borylated Quinolines. Chemistry 2023; 29:e202301734. [PMID: 37280155 DOI: 10.1002/chem.202301734] [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: 06/01/2023] [Revised: 06/04/2023] [Accepted: 06/05/2023] [Indexed: 06/08/2023]
Abstract
The quinolone-quinoline tautomerization is harnessed to effect the regioselective C8-borylation of biologically important 4-quinolones by using [Ir(OMe)(cod)]2 as the catalyst precursor, the silica-supported monodentate phosphine Si-SMAP as the ligand, and B2 pin2 as the boron source. Initially, O-borylation of the quinoline tautomer takes place. Critically, the newly formed 4-(pinBO)-quinolines then undergo N-directed selective Ir-catalyzed borylation at C8. Hydrolysis of the OBpin moiety on workup returns the system to the quinolone tautomer. The C8-borylated quinolines were converted to their corresponding potassium trifluoroborate (BF3 K) salts and to their C8-chlorinated quinolone derivatives. The two-step C-H borylation-chlorination reaction sequence resulted in various C8-Cl quinolones in good yields. Conversion to C8-OH-, C8-NH2 -, and C8-Ar-substituted quinolones was also feasible by using this methodology.
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Affiliation(s)
- Hamad H Al Mamari
- Department of Chemistry, College of Science, Sultan Qaboos University, PO Box 36, Al Khoudh 123, Muscat, Sultanate of Oman
- Institut für Anorganische Chemie and, Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Julie Borel
- Institut für Anorganische Chemie and, Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Aobha Hickey
- School of Chemistry & Analytical and, Biological Chemistry Research Facility, University College Cork, T12 YN60, Ireland
| | - Eimear Courtney
- School of Chemistry & Analytical and, Biological Chemistry Research Facility, University College Cork, T12 YN60, Ireland
| | - Julia Merz
- Institut für Anorganische Chemie and, Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Xiaolei Zhang
- Institut für Anorganische Chemie and, Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie and, Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Todd B Marder
- Institut für Anorganische Chemie and, Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Gerard P McGlacken
- School of Chemistry & Analytical and, Biological Chemistry Research Facility, University College Cork, T12 YN60, Ireland
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Rana T, Ghosh A, Aher YN, Pawar AB. Harnessing Vinyl Acetate as an Acetylene Equivalent in Redox-Neutral Cp*Co(III)-Catalyzed C-H Activation/Annulation for the Synthesis of Isoquinolones and Pyridones. ACS OMEGA 2023; 8:25262-25271. [PMID: 37483194 PMCID: PMC10357576 DOI: 10.1021/acsomega.3c02352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 06/23/2023] [Indexed: 07/25/2023]
Abstract
We have developed Cp*Co(III)-catalyzed redox-neutral synthesis of 3,4-unsubstituted isoquinoline 1(2H)-ones at ambient temperature using N-chloroamides as a starting material. The reaction utilizes vinyl acetate as an inexpensive and benign acetylene surrogate. The N-Cl bond of the N-chlorobenzamides plays the role of an internal oxidant and hence precludes the need for an external oxidant. The reaction works with a wide range of substrates having various functional groups and a substrate containing a heterocyclic ring. Notably, the reaction is extended to the N-chloroacrylamides in which vinylic C-H activation occurs to furnish the 2-pyridone derivatives. Preliminary mechanistic studies were also conducted to shed light on the mechanism of this reaction.
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Bhaduri N, Pawar AB. Redox-neutral C-H annulation strategies for the synthesis of heterocycles via high-valent Cp*Co(III) catalysis. Org Biomol Chem 2023; 21:3918-3941. [PMID: 37128760 DOI: 10.1039/d3ob00133d] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A variety of biologically active molecules, pharmaceuticals, and natural products consist of a nitrogen-containing heterocyclic backbone. The majority of them are isoquinolones, indoles, isoquinolines, etc.; thereby the synthesis and derivatization of such heterocycles are synthetically very relevant. Also, certain naphthol derivatives have high synthetic utility as agrochemicals and in dye industries. Previous approaches have utilized ruthenium, rhodium, or iridium which may not be desirable due to the high toxicity, low abundance, and high cost of such 4d and 5d metals. Moreover, the need for an external oxidant during the reaction also adds by-products to the system. A high-valent cobalt-catalyzed redox-neutral C-H functionalization strategy has emerged to be a far better alternative in this regard. The use of the non-noble metal cobalt allows for selectivity and specificity in product formation. Also, the redox-neutral concept avoids the use of an external oxidant either due to the presence of a metal in a non-variable oxidation state throughout the catalytic cycle or due to the presence of an oxidizing directing group or an oxidizing coupling partner. Such an oxidizing directing group not only directs the catalyst to a specific reaction site by chelation but also regenerates the catalyst at the end of the cycle. Certain bonds such as N-O, N-N, N-Cl, N-S, and C-S are the main game-players behind the oxidizing property of such directing groups. In the other case, the directing group only chelates the catalyst to a reaction center, whereas the oxidation is carried out by the upcoming group/coupling partner. Overall, merging the redox-neutral concept with the high-valent cobalt catalysis is paving the way forward toward a sustainable and environmentally friendly approach. This review critically describes the mechanistic understanding, scope, limitations, and synthesis of various biologically relevant heterocycles via the redox-neutral concept in the high-valent Cp*Co(III)-catalyzed C-H functionalization chemistry domain.
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Affiliation(s)
- Nilanjan Bhaduri
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh, 175005, India.
| | - Amit B Pawar
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh, 175005, India.
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Yang D, Zhang X, Wang X, Si XJ, Wang J, Wei D, Song MP, Niu JL. Cobalt-Catalyzed Enantioselective C–H Annulation with Alkenes. ACS Catal 2023. [DOI: 10.1021/acscatal.2c06355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Dandan Yang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Xian Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Xinghua Wang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Xiao-Ju Si
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Jingtao Wang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Donghui Wei
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Jun-Long Niu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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13
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Wang L, Zhang L, Gong L. Cobalt(III)-catalyzed synthesis of isoquinolines from oximes and alkynes in deep eutectic solvents. MENDELEEV COMMUNICATIONS 2023. [DOI: 10.1016/j.mencom.2023.02.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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14
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Jothi Murugan S, Jeganmohan M. Cp*Co(III)-Catalyzed Regioselective [4 + 2]-Annulation of N-Chlorobenzamides with Vinyl Acetate/Vinyl Ketones. J Org Chem 2023; 88:1578-1589. [PMID: 36680527 DOI: 10.1021/acs.joc.2c02640] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
An efficient and straightforward strategy for the synthesis of isoquinolones through [4 + 2]-annulation of N-chlorobenzamides with vinyl acetate in the presence of CoCp*(III) catalyst in a regioselective manner is described. Furthermore, the annulation reaction was diversified by using vinyl ketones. By utilizing this strategy, biologically valuable isoquinolone derivatives were prepared in good yields. Subsequently, isoquinolone derivatives were further transformed into 1-chloroisoquinolines in the presence of POCl3. Furthermore, mechanistic investigations such as deuterium labeling study and competition experiment were performed to support the proposed reaction mechanism.
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Affiliation(s)
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600036, India
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15
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Bora J, Dutta M, Chetia B. Cobalt catalyzed alkenylation/annulation reactions of alkynes via C–H activation: A review. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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16
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Cui Y, Wang R, Yang C, Wang A, Jing Y, Zhang S. Annulation of m-Substituted Aromatic Ketones with Diphenylacetylene Catalyzed by Ruthenium: A Reliable Route to Substituted Naphthalene Derivatives. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s107036322212043x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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17
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Yang Z, Tang J, Chen Z, Wu XF. Ruthenium-Catalyzed Hydroxyl-Directed peri-Selective C-H Activation and Annulation of 1-Naphthols with CF 3-Imidoyl Sulfoxonium Ylides for the Synthesis of 2-(Trifluoromethyl)-2,3-dihydrobenzo[ de]chromen-2-amines. Org Lett 2022; 24:7288-7293. [PMID: 36194465 DOI: 10.1021/acs.orglett.2c02685] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A ruthenium-catalyzed peri-selective C-H activation and annulation of 1-naphthols with CF3-substituted imidoyl sulfoxonium ylides that uses hydroxyl as a weakly coordinating directing group is disclosed. The strategy provides a facile and practical route to diverse trifluoromethyl-containing 2,3-dihydrobenzo[de]chromen-2-amines with high efficiency. Notable advantages of this protocol include readily available materials, excellent regioselectivity, good functional group compatibility, and scalability.
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Affiliation(s)
- Zuguang Yang
- Department of Chemistry, Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
| | - Jianhua Tang
- Department of Chemistry, Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
| | - Zhengkai Chen
- Department of Chemistry, Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
| | - Xiao-Feng Wu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China.,Leibniz-Institut für Katalyse e. V., Albert-Einstein-Straβe 29a, 18059 Rostock, Germany
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18
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Wang B, Xu G, Huang Z, Wu X, Hong X, Yao Q, Shi B. Single‐Step Synthesis of Atropisomers with Vicinal C−C and C−N Diaxes by Cobalt‐Catalyzed Atroposelective C−H Annulation. Angew Chem Int Ed Engl 2022; 61:e202208912. [DOI: 10.1002/anie.202208912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Bing‐Jie Wang
- Center of Chemistry for Frontier Technologies Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Guo‐Xiong Xu
- Center of Chemistry for Frontier Technologies Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Zong‐Wei Huang
- Department of Chemistry University of Michigan Ann Arbor MI 48109 USA
| | - Xu Wu
- Center of Chemistry for Frontier Technologies Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Xin Hong
- Center of Chemistry for Frontier Technologies Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Qi‐Jun Yao
- Center of Chemistry for Frontier Technologies Department of Chemistry Zhejiang University Hangzhou 310027 China
| | - Bing‐Feng Shi
- Center of Chemistry for Frontier Technologies Department of Chemistry Zhejiang University Hangzhou 310027 China
- Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 China
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19
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Wang BJ, Xu GX, Huang ZW, Wu X, Hong X, Yao QJ, Shi BF. Single‐Step Synthesis of Atropisomers with Vicinal C–C and C–N Diaxes by Cobalt‐Catalyzed Atroposelective C–H Annulation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Guo-Xiong Xu
- Zhejiang University Departmenf of Chemistry CHINA
| | - Zong-Wei Huang
- University of Michigan Departmenf of Chemistry UNITED STATES
| | - Xu Wu
- Zhejiang University Departmenf of Chemistry CHINA
| | - Xin Hong
- Zhejiang University Departmenf of Chemistry CHINA
| | - Qi-Jun Yao
- Zhejiang University Departmenf of Chemistry CHINA
| | - Bing-Feng Shi
- Zhejiang University Department of Chemistry 38 Zheda Rd. 310027 Hangzhou CHINA
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20
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Naskar G, Jeganmohan M. Ligand‐Enabled [3+2] Annulation of Aromatic Acids with Maleimides by C(sp
3
)−H and C(sp
2
)−H Bond Activation. Chemistry 2022; 28:e202200778. [DOI: 10.1002/chem.202200778] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Indexed: 12/15/2022]
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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21
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Electrophile-Dependent Reactivity of Lithiated N-Benzylpyrene-1-Carboxamide. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123930. [PMID: 35745055 PMCID: PMC9227622 DOI: 10.3390/molecules27123930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 06/13/2022] [Accepted: 06/16/2022] [Indexed: 11/16/2022]
Abstract
In this paper, we describe the lithiation of N-benzylpyrene-1-carboxamide with RLi-TMEDA. We found that the reaction outcome strongly depends on the electrophile used in the quenching step. The electrophile can be introduced at either the benzylic position or at the C-2 position in the pyrene nucleus. Furthermore, when H+ was used as the quencher, the product of the intramolecular carbolithiation of the pyrene K-region was formed. Dehydrogenation of the obtained compound with DDQ allowed the synthesis of a novel nitrogen polycyclic compound with an aza-benzo[c,d]pyrene (azaolympicene) skeleton. Attempts to extend the reaction scope to the amides substituted in the phenyl ring 8a and 8b gave an unexpected result. The reaction of both compounds with BuLi gave 1-valerylpyrene (9) in good yield. Photophysical properties, including absorption spectra, emission spectra and quantum yields of the emission of selected products, were studied and discussed.
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22
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23
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El Idrissi N, Belachemi L, Merle N, Zinck P, Kaddami H. Comprehensive preparation and catalytic activities of co/TEMPO-cellulose nanocomposites: A promising green catalyst. Carbohydr Polym 2022; 295:119765. [DOI: 10.1016/j.carbpol.2022.119765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 06/14/2022] [Accepted: 06/17/2022] [Indexed: 11/02/2022]
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24
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Bajya KR, Sermadurai S. Dual Photoredox and Cobalt Catalysis Enabled Transformations. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
| | - Selvakumar Sermadurai
- Indian Institute of Technology Indore Chemistry Khandwa road Simrol 453552 Indore INDIA
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25
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Tanaka K, Hattori H, Yabe R, Nishimura T. Ir-Catalyzed cyclization of α,ω-dienes with an N-methyl group via two C-H activation steps. Chem Commun (Camb) 2022; 58:5371-5374. [PMID: 35411896 DOI: 10.1039/d2cc01275h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iridium-catalyzed sp3 C-H alkylation of an N-methyl group with 1,5- and 1,6-dienes proceeded to give five- and six-membered carbocyclic compounds, respectively, in high yields. The reaction involves intermolecular alkylation of the N-methyl group with a vinyl moiety and subsequent intramolecular cyclization at the β-position of the initially formed alkylated intermediate. The reaction using a chiral bidentate phosphine ligand enabled the asymmetric synthesis of the cyclic compounds.
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Affiliation(s)
- Katsumasa Tanaka
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi, Osaka 558-8585, Japan.
| | - Hiroshi Hattori
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi, Osaka 558-8585, Japan.
| | - Ryota Yabe
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi, Osaka 558-8585, Japan.
| | - Takahiro Nishimura
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi, Osaka 558-8585, Japan.
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26
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Saha A, Shankar M, Sau S, Sahoo AK. Multiple annulations of inert C(sp 2)-H bonds with alkynes. Chem Commun (Camb) 2022; 58:4561-4587. [PMID: 35303048 DOI: 10.1039/d2cc00172a] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Transition-metal catalyzed directing group (DG) assisted annulation of inert C-H bonds leads to the formation of complex molecular frameworks from readily accessible substrates. Thus, multiple annulation of less functionalized substrates with unsaturated species leads to the construction of structurally diverse fused poly(hetero)cycles. The directed inert C(arene)-H bond activation and the mode of TM-migration in this process could enabled obatining L-type [involves DG heteroatom, o-C(arene)-H bond, and C(arene)-H bond of aryl-motif in alkyne], Y-type [involves two heteroatoms of the DG and o-,o'-C(arene)-H bonds], and B-type [involves o-C(arene)-H bond and m-C(arene)-H bond] π-extended annulation products. The coordination preference of the DG heteroatom makes the transformation chemo- and regio-selective. This article underlines the conceptual development of unsymmetrical multiple annulation of arene C(sp2)-H bonds with alkynes, which is exceedingly appealing and highly important.
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Affiliation(s)
- Arijit Saha
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana - 500046, India.
| | - Majji Shankar
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana - 500046, India.
| | - Somratan Sau
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana - 500046, India.
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana - 500046, India.
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27
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Ramadan DR, Ferretti F, Ragaini F. Catalytic Reductive Cyclization of 2-Nitrobiphenyls Using Phenyl formate as CO Surrogate: a Robust Synthesis of 9H-Carbazoles. J Catal 2022. [DOI: 10.1016/j.jcat.2022.03.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Ahmad MS, Meguellati K. Recent Advances in Metal Catalyzed C−H Functionalization with a Wide Range of Directing Groups. ChemistrySelect 2022. [DOI: 10.1002/slct.202103716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Kamel Meguellati
- School of Pharmacy Jinan University 855 Xingye Avenue East Guangzhou 511436 China
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29
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Dey A, Singh A, Volla CMR. Cobalt-catalyzed highly diastereoselective [3 + 2] carboannulation reactions: facile access to substituted indane derivatives. Chem Commun (Camb) 2022; 58:1386-1389. [PMID: 34989718 DOI: 10.1039/d1cc05245d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Efficient oxidative [3 + 2] annulation reaction involving aryl hydrazones and heterobicyclic alkenes has been realized with inexpensive and earth-abundant cobalt salts under aerobic conditions. The reaction proceeds via directing-group-assisted C-H activation and exo-selective migratory insertion, followed by the intramolecular nucleophilic attack of the alkylcobalt(III) species onto the imine with high anti-diastereoselectivity to provide complex indane derivatives. The generation of three contiguous stereogenic centers within the indanyl unit and the avoidance of the use of stoichiometric amounts of metal oxidants make this transformation more valuable and appealing.
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Affiliation(s)
- Arnab Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Anurag Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Chandra M R Volla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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30
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Liu J, Xiao X, Lai Y, Zhang Z. Recent advances in transition metal-catalyzed heteroannulative difunctionalization of alkenes via C-H activation for the synthesis of heterocycles. Org Chem Front 2022. [DOI: 10.1039/d2qo00081d] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heterocyclic compounds are the fundamental structural motifs distributed in natural products, pharmaceuticals and biologically active compounds. Thus, there is increasing interest in the development of novel synthetic strategies for the...
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31
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Gu H, Jin X, Li J, Li H, Liu J. Recent Progress in Transition Metal-Catalyzed C—H Bond Activation of N-Aryl Phthalazinones. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202204056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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32
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Bera A, Kabadwal LM, Bera S, Banerjee D. Recent advances on non-precious metal-catalyzed C-H functionalization of N-heteroarenes. Chem Commun (Camb) 2021; 58:10-28. [PMID: 34874036 DOI: 10.1039/d1cc05899a] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
N-Heteroarenes are widely used for numerous medicinal applications, lifesaving drugs and show utmost importance as intermediates in chemical synthesis. This feature article highlights the recent advances, from 2015 to August 2021, on sp2 and sp3 C-H bond functionalization reactions of various N-heteroarenes catalyzed by non-precious transition metals (Mn, Co, Fe, Ni, etc.). The salient features of the report are: (i) the development of newer catalysis for Csp2-H activation of N-heteroarenes and categorized into alkylation, alkenylation, borylation, cyanation, and annulation reactions, (ii) recent advances on Csp3-H bond functionalization of N-heteroarenes considering newer approaches for alkylation as well as alkenylation processes, and (iii) synthetic applications and practical utility of the catalytic protocols utilized for late-stage drug development; (iv) scope for the development of newer catalytic protocols along with mechanistic studies and detail mechanistic findings of various important processes.
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Affiliation(s)
- Atanu Bera
- Department of Chemistry, Laboratory of Catalysis and Organic Synthesis, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Lalit Mohan Kabadwal
- Department of Chemistry, Laboratory of Catalysis and Organic Synthesis, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Sourajit Bera
- Department of Chemistry, Laboratory of Catalysis and Organic Synthesis, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Debasis Banerjee
- Department of Chemistry, Laboratory of Catalysis and Organic Synthesis, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
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33
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Chakraborty P, Mandal R, Paira S, Sundararaju B. C-H bond functionalization by dual catalysis: merging of high-valent cobalt and photoredox catalysis. Chem Commun (Camb) 2021; 57:13075-13083. [PMID: 34779804 DOI: 10.1039/d1cc04872d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The merger of transition metal catalysis and photocatalysis has emerged as a versatile platform that opened the gateway to diverse low-energy pathways for several synthetic transformations. However, amidst the first-row transition metals, directed C-H bond functionalization mediated by high-valent cobalt catalysis has advanced with rising momentum owing to its unique reactivity and the ability to participate in both one- and two-electron transfer reactions. However, the use of expensive, privileged Cp* ligands or use of stoichiometric silver(I) or manganese(III) is unavoidable. Despite significant advances in their respective fields, the combination of these two "green" approaches to further the vested interest of the scientific research community towards the development of ecofriendly and sustainable protocols is noticeably limited. Thus, the methodology based on high-cobalt-photoredox dual-catalytic strategy has high dormant potential and is worthy to explore. Herein, we highlight the recent advances in the high-valent cobalt-catalyzed sustainable catalytic approach by harnessing light energy for oxidative C-H bond functionalization. With this, we hope to inspire the development of unexplored cobalt-photoredox-catalyzed reactions with improved efficiency and selectivity.
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Affiliation(s)
- Priyanka Chakraborty
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh - 208016, India.
| | - Rajib Mandal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh - 208016, India.
| | - Soumen Paira
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh - 208016, India.
| | - Basker Sundararaju
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh - 208016, India.
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34
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Zhai H, Liu M, Wang C, Qiu S, Wei J, Yang H, Wu Y. Cobalt-Catalyzed 2-(1-Methylhydrazinyl)pyridine-Assisted C-H Alkylation/Annulation: Mechanistic Insights and Rapid Access to Cyclopenta[ c]isoquinolinone Derivatives. J Org Chem 2021; 86:14915-14927. [PMID: 34570982 DOI: 10.1021/acs.joc.1c01658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We have developed cobalt-catalyzed, bidentate 2-(1-methylhydrazinyl)pyridine (MHP)-directed C(sp2)-H alkylation/annulation of benzoic hydrazides with various alkenes. Notably, diverse cyclopenta[c]isoquinolinones and dihydroisoquinolinones were obtained via this functional group-tolerant protocol. The reaction can be performed on a gram scale while maintaining an excellent yield, and the directing group can be removed efficiently under mild conditions. Furthermore, density-functional theory (DFT) calculations provide an incisive understanding of the observed regioselectivities for different olefins.
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Affiliation(s)
- Hongbin Zhai
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Miao Liu
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Chao Wang
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Shuxian Qiu
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China.,Department of Chemistry, Guangdong University of Education, Guangzhou 510303, China
| | - Jian Wei
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Hongjian Yang
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Yundong Wu
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China.,Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen 518055, China
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35
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Ghorai J, Kesavan A, Anbarasan P. Cp*Co(III)-catalyzed C2-thiolation and C2,C3-dithiolation of substituted indoles with N-(arylthio)succinimide. Chem Commun (Camb) 2021; 57:10544-10547. [PMID: 34553717 DOI: 10.1039/d1cc03760a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A general and efficient Cp*CoIII-catalyzed C2-thiolation and C2,C3-dithiolation of indole derivatives has been achieved employing N-(aryl/alkylthio)succinimide as a thiolating reagent. This external oxidant-free method utilizes only catalytic amounts of additive and tolerates various functional groups to afford various thiolated products in good yields. Control experiments revealed the importance of the Cp*CoIII-catalyst for both C2- and C3-thiolation.
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Affiliation(s)
- Jayanta Ghorai
- Department of Chemistry, Indian Institute of Technology Madras, Chennai - 600036, India.
| | - Arunachalam Kesavan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai - 600036, India.
| | - Pazhamalai Anbarasan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai - 600036, India.
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36
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Huang MG, Shi S, Li M, Liu YJ, Zeng MH. Salicylaldehyde-Promoted Cobalt-Catalyzed C-H/N-H Annulation of Indolyl Amides with Alkynes: Direct Synthesis of a 5-HT3 Receptor Antagonist Analogue. Org Lett 2021; 23:7094-7099. [PMID: 34449224 DOI: 10.1021/acs.orglett.1c02502] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A cobalt-catalyzed annulation of the C(sp2)-H/N-H bond of indoloamides with alkynes assisted by 8-aminoquinoline is reported for the synthesis of six-membered indololactams. The use of salicylaldehyde as the ligand is crucial for this transformation. The protocol has a broad scope for both alkynes and indoles. Preparing an active Co complex illustrates that salicylaldehyde plays a key role in the C-H activation step. The synthetic applications are proven by the gram-scale reaction and one-step construction of the multicyclic 5-HT3 receptor antagonist.
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Affiliation(s)
- Mao-Gui Huang
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, P. R. China
| | - Shuai Shi
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, P. R. China
| | - Ming Li
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, P. R. China
| | - Yue-Jin Liu
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, P. R. China
| | - Ming-Hua Zeng
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, P. R. China.,Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
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37
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Ko GH, Maeng C, Jeong H, Han SH, Han GU, Lee K, Noh HC, Lee PH. Rhodium(III)-Catalyzed Sequential C-H Activation and Cyclization from N-Methoxyarylamides and 3-Diazooxindoles for the Synthesis of Isochromenoindolones. Chem Asian J 2021; 16:3179-3187. [PMID: 34387948 DOI: 10.1002/asia.202100797] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/12/2021] [Indexed: 12/22/2022]
Abstract
An efficient synthetic method for structurally various isochromenoindolones has been demonstrated through Rh(III)-catalyzed C-H activation followed by a cyclization reaction of N-methoxyarylamides with 3-diazooxindoles. The sequential reaction involves the streamlined formation of C-C and C-O bonds in one pot. The present method provides a broad range of isochromenoindolones as a new privileged scaffold in moderate to good yields with the release of methoxyamine and molecular nitrogen and has the benefits of a broad substrate scope and good functional group tolerance.
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Affiliation(s)
- Gi Hoon Ko
- Department of Chemistry, Kangwon National University, Chuncheon, 24341, Korea
| | - Chanyoung Maeng
- Department of Chemistry, Kangwon National University, Chuncheon, 24341, Korea
| | - Haneal Jeong
- Department of Chemistry, Kangwon National University, Chuncheon, 24341, Korea
| | - Sang Hoon Han
- Department of Chemistry, Kangwon National University, Chuncheon, 24341, Korea
| | - Gi Uk Han
- Department of Chemistry, Kangwon National University, Chuncheon, 24341, Korea
| | - Kyungsup Lee
- Department of Chemistry, Kangwon National University, Chuncheon, 24341, Korea
| | - Hee Chan Noh
- Department of Chemistry, Kangwon National University, Chuncheon, 24341, Korea
| | - Phil Ho Lee
- Department of Chemistry, Kangwon National University, Chuncheon, 24341, Korea
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38
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Sunny S, John SE, Shankaraiah N. Exploration of C‐H Activation Strategies in Construction of Functionalized 2‐Aryl Benzoazoles: A Decisive Review. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Steeva Sunny
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Stephy Elza John
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
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Al Mamari HH, Al Kiumi D, Al Rashdi T, Al Quraini H, Al Rashdi M, Al Sheraiqi S, Al Harmali S, Al Lamki M, Al Sheidi A, Al Zadjali A. Ru‐Catalyzed C(sp
2
)−H Bond Arylation of Benzamides Bearing a Novel 4‐Aminoantipyrine as a Directing Group. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hamad H. Al Mamari
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Diana Al Kiumi
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Tamadher Al Rashdi
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Huda Al Quraini
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Malak Al Rashdi
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Sumayya Al Sheraiqi
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Sara Al Harmali
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Mohammed Al Lamki
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Ahmed Al Sheidi
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Asma Al Zadjali
- Department of Chemistry, College of Science Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
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40
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Dey A, Volla CMR. Cobalt-Catalyzed C-H Activation and [3 + 2] Annulation with Allenes: Diastereoselective Synthesis of Indane Derivatives. Org Lett 2021; 23:5018-5023. [PMID: 34132556 DOI: 10.1021/acs.orglett.1c01521] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An unprecedented bidentate directing-group-assisted cobalt-catalyzed oxidative C-H activation of aryl hydrazones followed by a syn-diastereoselective [3 + 2] annulation reaction has been achieved, employing allenes as the annulation partners. The selective 2,3-migratory insertion of allenes with arylcobalt(III) species and the subsequent intramolecular diastereoselective nucleophilic addition of η1-allylcobalt onto the imine resulted in [3 + 2] annulation over the alternative [4 + 2] annulation. Furthermore, the oxidative annulation obviates the need for stoichiometric metal oxidants and proceeds under aerobic conditions.
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Affiliation(s)
- Arnab Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Chandra M R Volla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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41
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López‐Resano S, Martínez de Salinas S, Garcés‐Pineda FA, Moneo‐Corcuera A, Galán‐Mascarós JR, Maseras F, Pérez‐Temprano MH. Redefining the Mechanistic Scenario of Carbon−Sulfur Nucleophilic Coupling via High‐Valent Cp*Co
IV
Species. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sara López‐Resano
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Analítica i Química Orgànica Universitat Rovira i Virgili, C/ Marcelli Domingo s/n 43007 Tarragona Spain
| | - Sara Martínez de Salinas
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Felipe A. Garcés‐Pineda
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Andrea Moneo‐Corcuera
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - José Ramón Galán‐Mascarós
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
- ICREA Passeig Lluis Companys, 23 08010 Barcelona Spain
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
| | - Mónica H. Pérez‐Temprano
- Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology Av. Països Catalans 16 43007 Tarragona Spain
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42
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Abstract
Sustainable transformations towards the production of valuable chemicals constantly attract interest, both in terms of academic and applied research. C–H activation has long been scrutinized in this regard, given that it offers a straightforward pathway to prepare compounds of great significance. In this context, directing groups (DG) have paved the way for chemical transformations that had not been achievable using traditional reactions. Few steps, high yields, selectivity and activation of inert substrates are some of the invaluable assets of directed catalysis. Additionally, the employment of traceless directing groups (TDG) greatly improves and simplifies this strategy, enabling the realization of multi-step reactions in one-pot, cascade procedures. Cheap, abundant, readily available transition metal salts and complexes can catalyze a plethora of reactions employing TDGs, usually under low catalyst loadings—rarely under stoichiometric amounts, leading in greater atom economy and milder conditions with increased yields and step-economy. This review article summarizes all the work done on TDG-assisted catalysis with manganese, iron, cobalt, nickel, or copper catalysts, and discusses the structure-activity relationships observed, by presenting the catalytic pathways and range of transformations reported thus far.
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43
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Banjare SK, Nanda T, Pati BV, Biswal P, Ravikumar PC. O-Directed C-H functionalization via cobaltacycles: a sustainable approach for C-C and C-heteroatom bond formations. Chem Commun (Camb) 2021; 57:3630-3647. [PMID: 33870349 DOI: 10.1039/d0cc08199j] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review focuses on providing comprehensive highlights of the recent advances in the field of cobalt-catalysed C-H functionalization and related synthetic concepts, relying on these through oxygen atom coordination. In recent years, 3d transition metal (Fe, Co, Cu & Ni) catalysed C-H functionalization reactions have received immense attention on account of its higher abundance and low cost, as compared to noble metals such as Ir, Rh, Ru and Pd. Among the first-row transition metals, cobalt is one of the extensively used metals for sustainable synthesis due to its unique reactivity towards the functionalization of inert C-H bonds. The functionalization of the inert C-H bond necessitates a proximal directing group. In this context, strongly coordinating nitrogen atom directed C-H functionalizations have been well explored. Nevertheless, strongly coordinating nitrogen-containing scaffolds, such as pyridine, pyrimidine, and 8-aminoquinoline, have to be installed and removed in a separate process. In contrast, C-H functionalizations through weakly coordinating atoms, such as oxygen, are largely underdeveloped. Since the oxygen atom is a part of many readily available functional groups, such as aldehydes, ketones, carboxylic acids, and esters, it could be used as directing groups for selective C-H functionalization reactions without any modification. Thus, the use of 3d transition metals, such as cobalt, along with weakly coordinating (oxygen) directing groups for C-H functionalization reactions are more sustainable, especially for the large-scale production of pharmaceuticals in industries. During the last decade, notable progress has been made using this concept. Nonetheless, almost all the reports are restricted to the formation of C-C and C-N bond. Therefore, there is a wide scope for developing this area for the formation of other bonds, such as C-X (halogens), C-B, C-S, and C-Se.
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Affiliation(s)
- Shyam Kumar Banjare
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) HBNI, Bhubaneswar, Odisha 752050, India.
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44
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Ramesh B, Jeganmohan M. Cobalt(iii)-catalyzed redox-neutral [4+2]-annulation of N-chlorobenzamides/acrylamides with alkylidenecyclopropanes at room temperature. Chem Commun (Camb) 2021; 57:3692-3695. [PMID: 33725082 DOI: 10.1039/d1cc00654a] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An efficient synthesis of substituted 3,4-dihydroisoquinolinones through [4+2]-annulation of N-chlorobenzamides/acrylamides having a monodentate directing group with alkylidenecyclopropanes in the presence of a less expensive, highly abundant and air stable Co(iii) catalyst via a C-H activation is demonstrated. In this reaction, the N-Cl bond of N-chlorobenzamide serves as an internal oxidant and thus an external metal oxidant is avoided. The 3,4-dihydroisoquinolinone derivatives are converted successfully into the highly useful imidoyl chloride derivatives. The deuterium labeling and kinetic isolabelling studies reveal that the C-H activation is a rate-determining step in this cyclization reaction.
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Affiliation(s)
- Balu Ramesh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India.
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45
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López-Resano S, Martínez de Salinas S, Garcés-Pineda FA, Moneo-Corcuera A, Galán-Mascarós JR, Maseras F, Pérez-Temprano MH. Redefining the Mechanistic Scenario of Carbon-Sulfur Nucleophilic Coupling via High-Valent Cp*Co IV Species. Angew Chem Int Ed Engl 2021; 60:11217-11221. [PMID: 33739577 DOI: 10.1002/anie.202101390] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/08/2021] [Indexed: 12/26/2022]
Abstract
The potential access to CoIV species for promoting transformations that are particularly challenging at CoIII still remains underexploited in the context of Cp*Co-catalyzed C-H functionalization reactions. Herein, we disclose a combined experimental and computational strategy for uncovering the participation of Cp*CoIV species in a Cp*Co-mediated C-S bond-reductive elimination. These studies support the intermediacy of high-valent Cp*Co species in C-H functionalization reactions, under oxidative conditions, when involving nucleophilic coupling partners.
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Affiliation(s)
- Sara López-Resano
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain.,Departament de Química Analítica i Química Orgànica, Universitat Rovira i, Virgili, C/ Marcelli Domingo s/n, 43007, Tarragona, Spain
| | - Sara Martínez de Salinas
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Felipe A Garcés-Pineda
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Andrea Moneo-Corcuera
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - José Ramón Galán-Mascarós
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain.,ICREA, Passeig Lluis Companys, 23, 08010, Barcelona, Spain
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Mónica H Pérez-Temprano
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
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46
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Shankar M, Saha A, Sau S, Ghosh A, Gandon V, Sahoo AK. Harnessing sulfur and nitrogen in the cobalt(iii)-catalyzed unsymmetrical double annulation of thioamides: probing the origin of chemo- and regio-selectivity. Chem Sci 2021; 12:6393-6405. [PMID: 34084439 PMCID: PMC8115082 DOI: 10.1039/d1sc00765c] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 03/19/2021] [Indexed: 12/27/2022] Open
Abstract
An unconventional cobalt(iii)-catalyzed one-pot domino double annulation of aryl thioamides with unactivated alkynes is presented. Sulfur (S), nitrogen (N), and o,o'-C-H bonds of aryl thioamides are involved in this reaction, enabling access to rare 6,6-fused thiopyrano-isoquinoline derivatives. A reverse 'S' coordination over a more conventional 'N' coordination of thioamides to the Co-catalyst specifically regulates the formation of four [C-C and C-S at first and then C-N and C-C] bonds in a single operation, a concept which is uncovered for the first time. The power of the N-masked methyl phenyl sulfoximine (MPS) directing group in this annulation sequence is established. The transformation is successfully developed, building a novel chemical space of structural diversity (56 examples). In addition, the late-stage annulation of biologically relevant motifs and drug candidates is disclosed (17 examples). The preliminary photophysical properties of thiopyrano-isoquinoline derivatives are discussed. Density functional theory (DFT) studies authenticate the participation of a unique 6π-electrocyclization of a 7-membered S-chelated cobaltacycle in the annulation process.
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Affiliation(s)
- Majji Shankar
- School of Chemistry, University of Hyderabad Hyderabad India
| | - Arijit Saha
- School of Chemistry, University of Hyderabad Hyderabad India
| | - Somratan Sau
- School of Chemistry, University of Hyderabad Hyderabad India
| | - Arghadip Ghosh
- School of Chemistry, University of Hyderabad Hyderabad India
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182, Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris route de Saclay 91128 Palaiseau cedex France
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad Hyderabad India
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47
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He Q, Chatani N. Palladium-Catalyzed Site-Selective [3+2] Annulation via Benzylic and meta C-H Bond Activation. Angew Chem Int Ed Engl 2021; 60:5189-5192. [PMID: 33241656 DOI: 10.1002/anie.202015054] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Indexed: 12/13/2022]
Abstract
The palladium-catalyzed [3+2] annulation of aromatic amides with maleimides via the activation of ortho benzylic C-H and meta C-H bonds is reported. Carboxamide and anilide type substrates that contain a 2-methylthiophenyl group both participate in this [3+2] annulation, indicating that the presence of a 2-methylthiophenyl directing group is a key for the success of the reaction. The first C-H bond activation at the benzylic C-H bond is followed by a second C-H bond activation at the meta C-H bond to give five-membered cyclic products. The cleavage of these C-H bonds is irreversible.
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Affiliation(s)
- Qiyuan He
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
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48
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Xie W, Jian X, Zhang L, Jin K, Shi J, Zhu F. Synthesis of C3-sulfone substituted naphthols via rhodium(III)-catalyzed annulation of sulfoxonium ylides with alkynylsulfones. Org Biomol Chem 2021; 19:1498-1502. [PMID: 33529298 DOI: 10.1039/d0ob02267e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
C-H activation of sulfoxonium ylides catalyzed by rhodium(iii) with subsequent annulation by alkynylsulfones was accomplished. This methodology offers a step-economical approach for assembling C3-sulfone-substituted naphthols with a high level of regioselectivity that is complementary to previous protocols. The approach has an extensive substrate spectrum and broad functional group tolerance.
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Affiliation(s)
- Wucheng Xie
- School of Environment and Chemical Engineering, Foshan University, Foshan 528000, China.
| | - Xinyi Jian
- School of Environment and Chemical Engineering, Foshan University, Foshan 528000, China.
| | - Liyang Zhang
- School of Environment and Chemical Engineering, Foshan University, Foshan 528000, China.
| | - Kexin Jin
- School of Environment and Chemical Engineering, Foshan University, Foshan 528000, China.
| | - Junjun Shi
- School of Environment and Chemical Engineering, Foshan University, Foshan 528000, China.
| | - Feng Zhu
- School of Environment and Chemical Engineering, Foshan University, Foshan 528000, China.
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49
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Xing YK, Chen XR, Yang QL, Zhang SQ, Guo HM, Hong X, Mei TS. Divergent rhodium-catalyzed electrochemical vinylic C-H annulation of acrylamides with alkynes. Nat Commun 2021; 12:930. [PMID: 33568643 PMCID: PMC7876044 DOI: 10.1038/s41467-021-21190-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 01/14/2021] [Indexed: 12/22/2022] Open
Abstract
α-Pyridones and α-pyrones are ubiquitous structural motifs found in natural products and biologically active small molecules. Here, we report an Rh-catalyzed electrochemical vinylic C-H annulation of acrylamides with alkynes, affording cyclic products in good to excellent yield. Divergent syntheses of α-pyridones and cyclic imidates are accomplished by employing N-phenyl acrylamides and N-tosyl acrylamides as substrates, respectively. Additionally, excellent regioselectivities are achieved when using unsymmetrical alkynes. This electrochemical process is environmentally benign compared to traditional transition metal-catalyzed C-H annulations because it avoids the use of stoichiometric metal oxidants. DFT calculations elucidated the reaction mechanism and origins of substituent-controlled chemoselectivity. The sequential C-H activation and alkyne insertion under rhodium catalysis leads to the seven-membered ring vinyl-rhodium intermediate. This intermediate undergoes either the classic neutral concerted reductive elimination to produce α-pyridones, or the ionic stepwise pathway to produce cyclic imidates.
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Affiliation(s)
- Yi-Kang Xing
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xin-Ran Chen
- Department of Chemistry, Zhejiang University, Hangzhou, China
| | - Qi-Liang Yang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Henan Normal University, Xinxiang, Henan, China
| | - Shuo-Qing Zhang
- Department of Chemistry, Zhejiang University, Hangzhou, China
| | - Hai-Ming Guo
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Henan Normal University, Xinxiang, Henan, China
| | - Xin Hong
- Department of Chemistry, Zhejiang University, Hangzhou, China.
| | - Tian-Sheng Mei
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.
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50
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Shen X, Thach DQ, Ting CP, Maimone TJ. Annulative Methods in the Synthesis of Complex Meroterpene Natural Products. Acc Chem Res 2021; 54:583-594. [PMID: 33448794 DOI: 10.1021/acs.accounts.0c00781] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
From the venerable Robinson annulation to the irreplaceable Diels-Alder cycloaddition, annulation reactions have fueled the progression of the field of natural product synthesis throughout the past century. In broader terms, the ability to form a cyclic molecule directly from two or more simpler fragments has transformed virtually every aspect of the chemical sciences from the synthesis of organic materials to bioconjugation chemistry and drug discovery. In this Account, we describe the evolution of our meroterpene synthetic program over the past five years, enabled largely by the development of a tailored anionic annulation process for the synthesis of hydroxylated 1,3-cyclohexanediones from lithium enolates and the reactive β-lactone-containing feedstock chemical diketene.First, we provide details on short total syntheses of the prototypical polycyclic polyprenylated acylphloroglucinol (PPAP) natural products hyperforin and garsubellin A, which possess complex bicyclo[3.3.1]nonane architectures. Notably, these molecules have served as compelling synthetic targets for several decades and induce a number of biological effects of relevance to neuroscience and medicine. By merging our diketene annulation process with a hypervalent iodine-mediated oxidative ring expansion, bicyclo[3.3.1]nonane architectures can be easily prepared from simple 5,6-fused bicyclic diketones in only two chemical operations. Leveraging these two key chemical reactions in combination with various other stereoselective transformations allowed for these biologically active targets to be prepared in racemic form in only 10 steps.Next, we extend this strategy to the synthesis of complex fungal-derived meroterpenes generated biosynthetically from the coupling of 3,5-dimethylorsellinic acid (DMOA) and farnesyl pyrophosphate. A Ti(III)-mediated radical cyclization of a terminal epoxide was used to rapidly prepare a 6,6,5-fused tricyclic ketone which served as an input for our annulation/rearrangement process, ultimately enabling a total synthesis of protoaustinoid A, an important biosynthetic intermediate in DMOA-derived meroterpene synthesis, and its oxidation product berkeleyone A. Through a radical-based, abiotic rearrangement process, the bicyclo[3.3.1]nonane cores of these natural products could again be isomerized, resulting in the 6,5-fused ring systems of the andrastin family and ultimately delivering a total synthesis of andrastin D and preterrenoid. Notably, these isomerization transformations proved challenging when employing classic, acid-induced conditions for carbocation generation, thus highlighting the power of radical biomimicry in total synthesis. Finally, further oxidation and rearrangement allowed for access to terrenoid and the lactone-containing metabolite terretonin L.Overall, the merger of annulative diketene methodology with an oxidative rearrangement transformation has proven to be a broadly applicable strategy to synthesize bicyclo[3.3.1]nonane-containing natural products, a class of small molecules with over 1000 known members.
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Affiliation(s)
- Xingyu Shen
- Department of Chemistry, University of California−Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
| | - Danny Q. Thach
- Department of Chemistry, University of California−Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
| | - Chi P. Ting
- Department of Chemistry, University of California−Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
- Department of Chemistry, Edison-Lecks Laboratory, Brandeis University, 415 South Street, Waltham, Massachusetts 02453, United States
| | - Thomas J. Maimone
- Department of Chemistry, University of California−Berkeley, 826 Latimer Hall, Berkeley, California 94720, United States
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