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Wang YT, Zhang M, Liu ZX, Wu YX, Yan Q, Liu CL, Li JS, Li ZW, Liu HW, Li WS. Visible-Light-Promoted Radical Cascade Cyclization of 2-Vinyl Benzimidazoles: Access to Benzo[4,5]imidazo[1,2- b]isoquinolin- 11(6 H)-ones. J Org Chem 2024. [PMID: 38738957 DOI: 10.1021/acs.joc.4c00444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
A visible-light-enabled photoredox radical cascade cyclization of 2-vinyl benzimidazole derivatives is developed. This chemistry is applicable to a wide range of N-aroyl 2-vinyl benzimidazoles as acceptors, and halo compounds, including alkyl halides, acyl chlorides and sulfonyl chlorides, as radical precursors. The Langlois reagent also serves as an effective partner in this photocatalytic oxidative cascade process. This protocol provides a robust alternative for rendering highly functionalized benzo[4,5]imidazo[1,2-b]isoquinolin-11(6H)-ones.
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Affiliation(s)
- Yao-Tian Wang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Mai Zhang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Zhi-Xing Liu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Yu-Xin Wu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Qian Yan
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Cheng-Liang Liu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Jiang-Sheng Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Zhi-Wei Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Han-Wen Liu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation & Hunan Provincial Key Laboratory of CytoChemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Wen-Sheng Li
- College of Chemistry & Chemical Engineering, Hunan University, Changsha 410082, China
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Nasibullina ER, Mendogralo EY, Merkushev AA, Makarov AS, Uchuskin MG. Oxidative Transformation of 2-Furylanilines into Indolin-3-ones. J Org Chem 2024; 89:6602-6606. [PMID: 38635314 DOI: 10.1021/acs.joc.4c00359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Oxidation of 2-furylaninlies with m-CPBA followed by treatment with a base provides access to functionalized indolin-3-ones. The designed oxidative transformation utilizes an underassessed chemical behavior of furyl-containing amines to form a C-N bond via engaging a β-carbon atom of the furan core upon a ring-forming step, thereby providing an alternative disconnection toward nitrogen-containing heterocycles.
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Affiliation(s)
- Ekaterina R Nasibullina
- Department of Chemistry, Perm State University, Bukireva 15, 614990 Perm, Russian Federation
| | - Elena Y Mendogralo
- Department of Chemistry, Perm State University, Bukireva 15, 614990 Perm, Russian Federation
| | - Anton A Merkushev
- Department of Chemistry, Perm State University, Bukireva 15, 614990 Perm, Russian Federation
| | - Anton S Makarov
- Department of Chemistry, Perm State University, Bukireva 15, 614990 Perm, Russian Federation
| | - Maxim G Uchuskin
- Department of Chemistry, Perm State University, Bukireva 15, 614990 Perm, Russian Federation
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Liang D, Zhou QQ, Xuan J. Multiple-cycle photochemical cascade reactions. Org Biomol Chem 2024; 22:2156-2174. [PMID: 38385507 DOI: 10.1039/d4ob00071d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Cascade reactions represent an efficient and economical synthetic approach, enabling the rapid synthesis of a wide array of structurally complex organic compounds. These compounds, previously inaccessible, can now be synthesized in a remarkably limited number of steps. Concurrently, the photochemical reactions of organic molecules have gained prominence as a potent strategy for accessing a diverse range of radical species and intermediates. This is achieved in a controlled manner under mild conditions. Owing to the relentless endeavors of chemists, significant strides have been made in the realm of photochemical cascade reactions. These advancements have facilitated the synthesis of novel molecular structures with high complexity, structures that are typically challenging to generate under thermal conditions. In this review, we comprehensively summarize and underscore the recent pivotal advancements in visible-light-induced cascade reactions. Our focus is on the elucidation of multiple photochemical catalytic cycles, emphasizing the catalytic activation modes and the types of reactions involved.
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Affiliation(s)
- Dong Liang
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang 236037, China
| | - Quan-Quan Zhou
- Institute of Advanced Materials, Jiangxi Normal University, Nanchang 330022, China.
| | - Jun Xuan
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials and Key Laboratory of Functional Inorganic Materials of Anhui Province, College of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui 230601, People's Republic of China.
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Zhang X, Wang Y, Liu J, Tian C, Li X, Xie P, Zhu Z, Yao T. Synthesis of 3-aminotetrahydro-1 H-carbazols by visible-light photocatalyzed cycloaddition of cyclopropylanilines with 2-alkenylarylisocyanides. Chem Commun (Camb) 2023; 59:14423-14426. [PMID: 37975829 DOI: 10.1039/d3cc04674e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
A visible-light-induced cycloaddition between 2-alkenylarylisocyanides and cyclopropylanilines is reported. This cascade radical reaction constructs two new C-C bonds and two rings to afford 3-aminotetrahydro-1H-carbazols with high atom and step economy. The mechanism is rationalized as involving sequential distonic radical cation formation/isocyanide insertion/5-exo-trig cyclization/intramolecular iminium ion addition/tautomerization.
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Affiliation(s)
- Xiaofei Zhang
- Key Laboratory of Chemical Additives for China National Light Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China.
| | - Yao Wang
- Key Laboratory of Chemical Additives for China National Light Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China.
| | - Jiaxin Liu
- Key Laboratory of Chemical Additives for China National Light Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China.
| | - Chengpeng Tian
- Key Laboratory of Chemical Additives for China National Light Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China.
| | - Xiang Li
- Key Laboratory of Chemical Additives for China National Light Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China.
| | - Pan Xie
- Key Laboratory of Chemical Additives for China National Light Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China.
| | - Zhenyu Zhu
- Key Laboratory of Chemical Additives for China National Light Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China.
| | - Tuanli Yao
- Key Laboratory of Chemical Additives for China National Light Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China.
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Drennhaus T, Leifert D, Lammert J, Drennhaus JP, Bergander K, Daniliuc CG, Studer A. Enantioselective Copper-Catalyzed Fukuyama Indole Synthesis from 2-Vinylphenyl Isocyanides. J Am Chem Soc 2023; 145:8665-8676. [PMID: 37029692 DOI: 10.1021/jacs.3c01667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
Abstract
Enantioenriched chiral indoles are of high interest for the pharmaceutical and agrochemical industries. Herein, we present an asymmetric Fukuyama indole synthesis through a mild and efficient radical cascade reaction to access 2-fluoroalkylated 3-(α-cyanobenzylated) indoles by stereochemical control with a chiral copper-bisoxazoline complex using 2-vinylphenyl arylisocyanides as radical acceptors and fluoroalkyl iodides as C-radical precursors. Radical addition to the isonitrile moiety, 5-exo-trig cyclization, and Cu-catalyzed stereoselective cyanation provide the targeted indoles with excellent enantioselectivity and good yields. Due to the similar electronic and steric properties of the two aryl substituents to be differentiated, the enantioselective construction of the cyano diaryl methane stereocenter is highly challenging. Mechanistic studies reveal a negative nonlinear effect which allows proposing a model to explain the stereochemical outcome. Scalability and potential utility of the enantioenriched 3-(α-cyanobenzylated) indoles as hubs for chiral tryptamines, indole-3-acetic acid derivatives, and triarylmethanes are demonstrated, and a formal synthesis of a natural product analogue is disclosed.
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Affiliation(s)
- Till Drennhaus
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, 48149 Münster, Germany
| | - Dirk Leifert
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, 48149 Münster, Germany
| | - Jessika Lammert
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, 48149 Münster, Germany
| | | | - Klaus Bergander
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, 48149 Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, 48149 Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, 48149 Münster, Germany
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Koshikawa T, Nogami J, Nagashima Y, Tanaka K. Catalyst-Controlled Inter- and Intramolecular Cascade [4 + 2] Annulations via Benzopyrylium Intermediates. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Takumi Koshikawa
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Juntaro Nogami
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yuki Nagashima
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
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Bhargava Reddy M, Prasanth K, Neerathilingam N, Anandhan R. Quinazolinones/Benzothiadiazines as Amidyl/Aminyl Radical Precursors for Controlled Cascade Cyclization via Photocatalyzed PCET. Org Lett 2022; 24:8158-8163. [DOI: 10.1021/acs.orglett.2c03222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Kesavan Prasanth
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai-600 025, India
| | | | - Ramasamy Anandhan
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai-600 025, India
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Fu J, Cai X, Liu Y, Li J, Cheng D, Xu X. Synthesis of Isoquinoline-1,3(2H,4H)-diones by Visible-Light-Mediated Cyclization of Acryloylbenzamides with Alkylboronic Acids, Arylsulfonyl Hydrazides and Oxime Esters. SYNTHESIS-STUTTGART 2022; 54:2707-23. [DOI: 10.1055/a-1734-9782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AbstractAn efficient visible-light-mediated tandem reaction of acryloylbenzamides with alkylboronic acids, arylsulfonyl hydrazides and oxime esters has been developed. The reaction proceeds via radical addition and cyclization to give various isoquinoline-1,3(2H,4H)-diones in satisfactory yields under mild conditions, which provides a good opportunity to discover new meaningful bioactive compounds.
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