1
|
Romero IE, Postigo A, Bonesi SM. Preparation of Carbazoles Involving 6π-Electrocyclization, Photoredox-, Electrochemical-, and Thermal Cyclization Reactions: Mechanistic Insights. Chemistry 2024; 30:e202303229. [PMID: 38032158 DOI: 10.1002/chem.202303229] [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: 10/02/2023] [Indexed: 12/01/2023]
Abstract
Carbazole is a heterocyclic motif that can be found in a diverse array of natural and unnatural products displaying a wide range of biological and physiological properties. Furthermore, this heterocycle is part of electronic materials like photoconducting polymers and organic optoelectronic materials owing to its excellent photophysical characteristics. Consequently, the development of synthetic strategies for carbazole scaffolds holds potential significance in biological and material fields. In this regard, a variety of preparation methods has been developed to exploit their efficient and distinct formation of new C-C and C-heteroatom bonds under mild conditions and enabling broad substrate diversity and functional group tolerance. Therefore, this review focuses on the synthesis of a set of carbazole derivatives describing a variety of methodologies that involve direct irradiation, photosensitization, photoredox, electrochemical and thermal cyclization reactions.
Collapse
Affiliation(s)
- Ivan E Romero
- Universidad de Buenos Aires, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Buenos Aires, C1428EGA, Argentina
- CONICET - Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Ciudad Universitaria, Buenos Aires, C1428EGA, Argentina
- Universidad de Buenos Aires, Departamento de Ciencias Químicas, Facultad de Farmacia y Bioquímica, Junín 954, Buenos Aires, CP 1113, Argentina
| | - Al Postigo
- Universidad de Buenos Aires, Departamento de Ciencias Químicas, Facultad de Farmacia y Bioquímica, Junín 954, Buenos Aires, CP 1113, Argentina
| | - Sergio M Bonesi
- Universidad de Buenos Aires, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Buenos Aires, C1428EGA, Argentina
- CONICET - Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Ciudad Universitaria, Buenos Aires, C1428EGA, Argentina
| |
Collapse
|
2
|
Singh Chauhan AN, Mali G, Dua G, Samant P, Kumar A, Erande RD. [RhCp*Cl 2] 2-Catalyzed Indole Functionalization: Synthesis of Bioinspired Indole-Fused Polycycles. ACS OMEGA 2023; 8:27894-27919. [PMID: 37576617 PMCID: PMC10413382 DOI: 10.1021/acsomega.3c02510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 07/11/2023] [Indexed: 08/15/2023]
Abstract
Polycyclic fused indoles are ubiquitous in natural products and pharmaceuticals due to their immense structural diversity and biological inference, making them suitable for charting broader chemical space. Indole-based polycycles continue to be fascinating as well as challenging targets for synthetic fabrication because of their characteristic structural frameworks possessing biologically intriguing compounds of both natural and synthetic origin. As a result, an assortment of new chemical processes and catalytic routes has been established to provide unified access to these skeletons in a very efficient and selective manner. Transition-metal-catalyzed processes, in particular from rhodium(III), are widely used in synthetic endeavors to increase molecular complexity efficiently. In recent years, this has resulted in significant progress in reaching molecular scaffolds with enormous biological activity based on core indole skeletons. Additionally, Rh(III)-catalyzed direct C-H functionalization and benzannulation protocols of indole moieties were one of the most alluring synthetic techniques to generate indole-fused polycyclic molecules efficiently. This review sheds light on recent developments toward synthesizing fused indoles by cascade annulation methods using Rh(III)-[RhCp*Cl2]2-catalyzed pathways, which align with the comprehensive and sophisticated developments in the field of Rh(III)-catalyzed indole functionalization. Here, we looked at a few intriguing cascade-based synthetic designs catalyzed by Rh(III) that produced elaborate frameworks inspired by indole bioactivity. The review also strongly emphasizes mechanistic insights for reaching 1-2, 2-3, and 3-4-fused indole systems, focusing on Rh(III)-catalyzed routes. With an emphasis on synthetic efficiency and product diversity, synthetic methods of chosen polycyclic carbocycles and heterocycles with at least three fused, bridged, or spiro cages are reviewed. The newly created synthesis concepts or toolkits for accessing diazepine, indol-ones, carbazoles, and benzo-indoles, as well as illustrative privileged synthetic techniques, are included in the featured collection.
Collapse
Affiliation(s)
| | - Ghanshyam Mali
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| | - Garima Dua
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| | - Priya Samant
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| | - Akhilesh Kumar
- Department
of Chemistry and Nano Science, Ewha Womans
University, Seoul 03760, Korea
| | - Rohan D. Erande
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| |
Collapse
|
3
|
Li X, Sheng H, Song Q. Rhodium-Catalyzed Intramolecular Cyclization to Synthesize 2-Aminobenzofurans via Carbene Metathesis Reactions. Org Lett 2023; 25:2113-2117. [PMID: 36940428 DOI: 10.1021/acs.orglett.3c00539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
Abstract
Herein, we report a new method of synthesizing of 2-aminobenzofuran 3-enes via the formal C-S insertion reaction of alkyne-tethered diazo compounds. Metal carbene, as a kind of active synthetic intermediate, plays a very important role in organic synthesis. Through the carbene/alkyne metathesis strategy, a new donor carbene is produced in situ as a key intermediate, which has different reactions from the donor receptor carbene.
Collapse
Affiliation(s)
- Xue Li
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
| | - Heyun Sheng
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
- Key Laboratory of Molecule Synthesis and Function Discovery (Fijian Province University), College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| |
Collapse
|
4
|
Chen Y, Yan YH, Zhu BH, Chen F, Li L, Qian PC. Copper-Catalyzed Tandem Cyclization/Direct C(sp 2)-H Annulation of Azide-Ynamides via α-Imino Copper Carbenes: Access to Azepino[2,3- b:4,5- b']diindoles. Org Lett 2023; 25:2063-2067. [PMID: 36939559 DOI: 10.1021/acs.orglett.3c00434] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
A novel copper-catalyzed tandem cyclization/direct C(sp2)-H annulation of phenyl azide-ynamides via α-imino copper carbenes has been developed, which provides a concise and flexible approach for the construction of a range of valuable azepino[2,3-b:4,5-b']diindoles in mostly good to excellent yields with high chemoselectivities. This tandem reaction also exhibits a broad substrate scope, excellent functional group tolerance, simple operation, and mild reaction conditions.
Collapse
Affiliation(s)
- Yi Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yao-Hong Yan
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Bo-Han Zhu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Fan Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Long Li
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Peng-Cheng Qian
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou 325000, China
| |
Collapse
|
5
|
Sancheti SP, Mondal DJ, Patil NT. Fluorination of α-Imino Gold Carbenes to Access C 3-Fluorinated Aza-Heterocycles. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00088] [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)
- Shashank P. Sancheti
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Dibya Jyoti Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Nitin T. Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| |
Collapse
|
6
|
Halnor SV, Dhote PS, Ramana CV. Construction of the quinobenzoxazine core via gold-catalyzed dual annulation of azide-tethered alkynones with anthranils. Org Biomol Chem 2023; 21:2127-2137. [PMID: 36794667 DOI: 10.1039/d3ob00098b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
A new catalytic method for the construction of the quinobenzoxazine core has been developed employing the gold-catalyzed cyclization of o-azidoacetylenic ketones in the presence of anthranils. The overall process comprises of a gold-catalyzed 6-endo-dig cyclisation of o-azidoacetylenic ketone leading to a α-imino gold carbene and subsequent carbene transfer to anthranil leading to the 3-aryl-imino-quinoline-4-one intermediate, which undergoes 6π-electrocyclization and aromatization to form the central quinobenzoxazine core. This transformation provides a new approach to a diverse array of quinobenzoxazine structures, in addition to being scalable and having mild reaction conditions.
Collapse
Affiliation(s)
- Swapnil V Halnor
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Pawan S Dhote
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India.
| | - Chepuri V Ramana
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411 008, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| |
Collapse
|
7
|
Xie JM, Zhu YL, Fu YM, Zhu CF, Cheng LJ, You YE, Wu X, Li YG. Gold-Catalyzed Cascade Reaction of 2-Alkynyl Aryl Azides with Enecarbamates for Direct Synthesis of α-(3-Indolyl)ketones. Org Lett 2023; 25:421-425. [PMID: 36622839 DOI: 10.1021/acs.orglett.2c04147] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
α-(3-Indolyl)ketones are essential building blocks for the generation of biologically active molecules. We described a new method for the direct assembly of α-(3-indolyl)ketones through the cascade reaction of 2-alkynyl aryl azides with enecarbamates, in which the in situ generated α-imino gold carbene intermediate was trapped by enecarbamate to achieve umpolung reactivity of indole at the 3-position.
Collapse
Affiliation(s)
- Jin-Ming Xie
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - Yun-Long Zhu
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - Yan-Ming Fu
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - Cheng-Feng Zhu
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - Lan-Jun Cheng
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - Yang-En You
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - Xiang Wu
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - You-Gui Li
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| |
Collapse
|
8
|
Greiner LC, Arichi N, Inuki S, Ohno H. Gold(I)-Catalyzed Benzylic C(sp 3 )-H Functionalizations: Divergent Synthesis of Indole[a]- and [b]-Fused Polycycles. Angew Chem Int Ed Engl 2023; 62:e202213653. [PMID: 36255174 DOI: 10.1002/anie.202213653] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/17/2022] [Accepted: 10/17/2022] [Indexed: 11/05/2022]
Abstract
Phenyl azides substituted by an (alkylphenyl)ethynyl group facilitate benzylic sp3 (C-H) functionalization in the presence of a JohnPhosAu catalyst, resulting in indole-fused tetra- and pentacycles via divergent N- or C-cyclization. The chemoselectivity is influenced depending on the counter-anion, the electron density of the α-imino gold(I) carbene, and the alkyl groups stabilizing the benzylic carbocation originating from a 1,5-hydride shift. An isotopic labeling experiment demonstrates the involvement of an indolylgold(I) species resulting from a tautomerization that is much faster than the deauration. The formation of a benzylic sp3 (C-H) functionalization leading to an indole-fused seven-membered ring is also demonstrated.
Collapse
Affiliation(s)
- Luca C Greiner
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo-ku, Kyoto, 606-8501, Japan
| | - Norihito Arichi
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo-ku, Kyoto, 606-8501, Japan
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo-ku, Kyoto, 606-8501, Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo-ku, Kyoto, 606-8501, Japan
| |
Collapse
|
9
|
Trending strategies for the synthesis of quinolinones and isoquinolinones. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
10
|
Li M, Zhang R, Gao Q, Jiang H, Lei M, Wu W. Divergent Synthesis of Fused Tetracyclic Heterocycles from Diarylalkynes Enabled by the Selective Insertion of Isocyanide. Angew Chem Int Ed Engl 2022; 61:e202208203. [DOI: 10.1002/anie.202208203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Meng Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
| | - Ruixue Zhang
- State Key Laboratory of Chemical Resource Engineering Institute of Computational Chemistry College of Chemistry Beijing University of Chemical Technology Beijing 10019 China
| | - Qiushan Gao
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
| | - Ming Lei
- State Key Laboratory of Chemical Resource Engineering Institute of Computational Chemistry College of Chemistry Beijing University of Chemical Technology Beijing 10019 China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510641 China
| |
Collapse
|
11
|
Hauguel C, Pozzo J, Hamze A, Provot O. Recent Advances in Synthesis of Pyrrolo[3,2‐
b
]indole and Indolo[3,2‐
b
]indole Derivatives. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Camille Hauguel
- Université Paris-Saclay, CNRS, BioCIS 92290 Châtenay-Malabry France
| | - Jean‐Luc Pozzo
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR5255 351 cours Libération F-33405 Bordeaux France
| | - Abdallah Hamze
- Université Paris-Saclay, CNRS, BioCIS 92290 Châtenay-Malabry France
| | - Olivier Provot
- Université Paris-Saclay, CNRS, BioCIS 92290 Châtenay-Malabry France
| |
Collapse
|
12
|
Li M, Zhang R, Gao Q, Jiang H, Lei M, Wu W. Divergent Synthesis of Fused Tetracyclic Heterocycles from Diarylalkynes Enabled by the Selective Insertion of Isocyanide. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Meng Li
- South China University of Technology School of Chemistry and Chemical Engineering CHINA
| | - Ruixue Zhang
- Beijing University of Chemical Technology College of Chemistry CHINA
| | - Qiushan Gao
- South China University of Technology School of Chemistry and Chemical Engineering CHINA
| | - Huanfeng Jiang
- South China University of Technology School of Chemistry and Chemical Engineering CHINA
| | - Ming Lei
- Beijing University of Chemical Technology College of Chemistry CHINA
| | - Wanqing Wu
- South China University of Technology School of Chemistry & Chemical Engineering No. 381, Wushan Road, Tianhe Strict, 510640 Guangzhou CHINA
| |
Collapse
|
13
|
Fujita T, Fukuda T, Suzuki N, Ichikawa J. Rapid Synthesis of Fused Polycyclic Heteroaromatics via Successive Vinylic/Aromatic C–F Bond Activation. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Takeshi Fujita
- University of Tsukuba: Tsukuba Daigaku Division of Chemistry JAPAN
| | - Takuya Fukuda
- University of Tsukuba: Tsukuba Daigaku Division of Chemistry JAPAN
| | - Naoto Suzuki
- University of Tsukuba: Tsukuba Daigaku Division of Chemistry JAPAN
| | - Junji Ichikawa
- University of Tsukuba Department of Chemistry 1-1-1 Tennodai 305-8571 Tsukuba JAPAN
| |
Collapse
|
14
|
Tang L, Ouyang Y, Sun K, Yu B. Visible-light-promoted decarboxylative radical cascade cyclization to acylated benzimidazo/indolo[2,1- a]isoquinolin-6(5 H)-ones in water. RSC Adv 2022; 12:19736-19740. [PMID: 35865204 PMCID: PMC9260743 DOI: 10.1039/d2ra03467k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 06/30/2022] [Indexed: 12/25/2022] Open
Abstract
A metal-free visible-light-induced decarboxylative radical addition/cyclization procedure at room temperature was described for the synthesis of acylated benzimidazo/indolo[2,1-a]isoquinolines. The procedure was prepared in water via a reaction of functionalized 2-arylbenzoimidazoles or 2,3-diarylindoles and α-oxocarboxylic acids in the presence of phenyliodine(iii) diacetate (PIDA) in one step under mild reaction conditions. In this procedure, traditional heating and metal reagents could be effectively avoided to access 1,4-dicarbonyl-containing benzimidazo/indolo[2,1-a]isoquinoline-6(5H)-ones in satisfactory yields.
Collapse
Affiliation(s)
- Lili Tang
- Hunan Engineering Research Center for Recycled Aluminum, College of Chemistry & Materials Engineering, Huaihua University Huaihua 418008 China
| | - Yuejun Ouyang
- Hunan Engineering Research Center for Recycled Aluminum, College of Chemistry & Materials Engineering, Huaihua University Huaihua 418008 China
| | - Kai Sun
- Hunan Engineering Research Center for Recycled Aluminum, College of Chemistry & Materials Engineering, Huaihua University Huaihua 418008 China .,College of Chemistry, Zhengzhou University Zhengzhou 450001 China
| | - Bing Yu
- College of Chemistry, Zhengzhou University Zhengzhou 450001 China
| |
Collapse
|
15
|
Zhang Z, Kang Y, Hou R, Min X, Wang T, Liang Y. An Oxidant- and Catalyst-Free Synthesis of Dibenzo[a,c]carbazoles via UV Light Irradiation of 2,3-Diphenyl-1H-indoles. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1677-4881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractAn efficient methodology for the synthesis of dibenzo[a,c]carbazoles via annulation of 2,3-diphenyl-1H-indoles in EtOH under UV light irradiation (λ = 365 nm) along with hydrogen evolution is described. This method exhibits the advantages of mild reaction conditions, no requirement of any oxidants and catalysts, and release of hydrogen as the only byproduct. Notably, the mechanism investigation confirms that the trans-4b,8a-dihydro-9H-dibenzo[a,c]carbazole intermediate could convert into cis-4b,8a-dihydro-9H-dibenzo[a,c]carbazole, which relies on the nitrogen atom of the indole ring. This is followed by intramolecular dehydrogenation which yields the dibenzo[a,c]carbazoles.
Collapse
Affiliation(s)
- Zunting Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University
| | - Yang Kang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University
| | - Rong Hou
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University
| | - Xiaoyan Min
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University
| | - Tao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University
| | - Yong Liang
- Department of Molecular Medicine, Beckman Research Institute of City of Hope
| |
Collapse
|
16
|
Dhote P, Ramana C. Competing Intra‐ vs Intermolecular Nitrene Transfer in the [Au]‐Catalysed Reaction of 2‐Alkynylphenylazides. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
17
|
Weng CY, Zhu GY, Zhu BH, Qian PC, Zhu XQ, Zhou JM, Ye LW. Copper-catalyzed B−H bond insertion reaction of azide-ynamide with borane adducts via α-imino copper carbenes. Org Chem Front 2022. [DOI: 10.1039/d2qo00457g] [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
A new copper-catalyzed B−H bond insertion reaction between azide-ynamides and borane adducts has been developed, which represents the first B−H bond insertion into α-imino metal carbenes. This protocol enables the...
Collapse
|
18
|
Hong K, Huang J, Yao M, Xu X. Recent Advances in Nitrene/Alkyne Metathesis Cascade Reaction. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202109035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
19
|
Yang M, Liu T, Gong Y, Ai QW, Zhao YL. Rhodium-catalyzed coupling-cyclization of o-alkynyl/propargyl arylazides or o-azidoaryl acetylenic ketones with arylisocyanides: synthesis of 6 H-indolo[2,3- b]quinolines, dibenzonaphthyridones and dihydrodibenzo[ b, g] [1,8]-naphthyridines. Org Chem Front 2022. [DOI: 10.1039/d2qo00503d] [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
The developed rhodium-catalyzed coupling-cyclization provides a new strategy for the assembly of 6H-indolo[2,3-b]quinolines, dibenzonaphthyridones and dihydrodibenzo[b,g] [1,8]-naphthyridines.
Collapse
Affiliation(s)
- Ming Yang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Tao Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yue Gong
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Qing-Wen Ai
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yu-Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| |
Collapse
|
20
|
Hu XY, Xu HF, Chen Q, Pan YL, Chen JZ. Synthesis of indolo[2,1- α]isoquinoline derivatives via metal-free radical cascade cyclization. Org Biomol Chem 2021; 19:10376-10384. [PMID: 34812822 DOI: 10.1039/d1ob01917a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present studies, we describe a convenient and efficient protocol for the synthesis of the indolo[2,1-α]isoquinoline core structure through the reaction of 2-aryl-N-acryloyl indoles and aryl or alkyl α-keto acids under air environment in four hours. The developed approach features broad substrate scope and good functional group tolerance under mild reaction conditions without a metal catalyst participation. A series of valuable indolo[2,1-α] isoquinoline derivatives bearing various functional groups were synthesized using this method in good to excellent yields. Based on a series of control experiments, a radical pathway was proposed to explain the experiment.
Collapse
Affiliation(s)
- Xu-Yang Hu
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang, 310058, China.
| | - Hai-Feng Xu
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang, 310058, China.
| | - Qiang Chen
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang, 310058, China.
| | - You-Lu Pan
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang, 310058, China.
| | - Jian-Zhong Chen
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang, 310058, China.
| |
Collapse
|
21
|
Zhao B, Hammond GB, Xu B. Aromatic Ketone-Catalyzed Photochemical Synthesis of Imidazo-isoquinolinone Derivatives. J Org Chem 2021; 86:12851-12861. [PMID: 34436893 DOI: 10.1021/acs.joc.1c01486] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We have developed an efficient photocatalytic decarboxylative radical addition/cyclization strategy to synthesize imidazo-isoquinolinone derivatives using inexpensive aromatic ketone photocatalysts. This method not only tolerates a wide range of functional groups but also works well for both alkyl and aryl radicals.
Collapse
Affiliation(s)
- Bin Zhao
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Gerald B Hammond
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Bo Xu
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| |
Collapse
|
22
|
Greiner LC, Inuki S, Arichi N, Oishi S, Suzuki R, Iwai T, Sawamura M, Hashmi ASK, Ohno H. Access to Indole-Fused Benzannulated Medium-Sized Rings through a Gold(I)-Catalyzed Cascade Cyclization of Azido-Alkynes. Chemistry 2021; 27:12992-12997. [PMID: 34110644 DOI: 10.1002/chem.202101824] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Indexed: 02/05/2023]
Abstract
Because benzannulated and indole-fused medium-sized rings are found in many bioactive compounds, combining these fragments might lead to unexplored areas of biologically relevant and uncovered chemical space. Herein is shown that α-imino gold carbene chemistry can play an important role in solving the difficulty in the formation of medium-sized rings. Namely, phenylene-tethered azido-alkynes undergo arylative cyclization through the formation of a gold carbene intermediate to afford benzannulated indole-fused medium-sized tetracycles. The reactions allow a range of different aryl substitution patterns and efficient access to these otherwise difficult-to-obtain medium-sized rings. This study also demonstrates the feasibility of the semihollow-shaped C-dtbm ligand for the construction of a nine-membered ring.
Collapse
Affiliation(s)
- Luca C Greiner
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Norihito Arichi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Shinya Oishi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan.,Current Address: Department of Medicinal Chemistry, Kyoto Pharmaceutical University, Yashima-ku, Kyoto, 607-8412, Japan
| | - Rikito Suzuki
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Tomohiro Iwai
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan.,Current Address: Graduate School of Arts and Sciences, The University of Tokyo, Meguro-ku, Tokyo, 153-8902, Japan
| | - Masaya Sawamura
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - A Stephen K Hashmi
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| |
Collapse
|
23
|
Greiner LC, Matsuoka J, Inuki S, Ohno H. Azido-Alkynes in Gold(I)-Catalyzed Indole Syntheses. CHEM REC 2021; 21:3897-3910. [PMID: 34498385 DOI: 10.1002/tcr.202100202] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/26/2021] [Indexed: 12/20/2022]
Abstract
The exploitation of nitrogen-functionalized reactive intermediates plays an important role in the synthesis of biologically relevant scaffolds in the field of pharmaceutical sciences. Those based on gold carbenes carry a strong potential for the design of highly efficient cascade processes toward the synthesis of compounds containing a fused indole core structure. This personal account gives a detailed explanation of our contribution to this sector, and embraces the reaction development of efficient gold-catalyzed cascade processes based on diversely functionalized azido-alkynes. Challenging cyclizations and their subsequent application in the synthesis of pharmaceutically relevant scaffolds and natural products conducted in an intra- or intermolecular fashion are key features of our research.
Collapse
Affiliation(s)
- Luca C Greiner
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo-ku, Kyoto, 606-8501, Japan
| | - Junpei Matsuoka
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo-ku, Kyoto, 606-8501, Japan.,Current address: Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kodo, Kyotanabe, 610-0395, Japan
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo-ku, Kyoto, 606-8501, Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo-ku, Kyoto, 606-8501, Japan
| |
Collapse
|
24
|
Kamble OS, Khatravath M, Dandela R. Applications of Ethynylanilines as Substrates for Construction of Indoles and Indole‐Substituted Derivatives. ChemistrySelect 2021. [DOI: 10.1002/slct.202101437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Omkar S. Kamble
- Department of Industrial and Engineering Chemistry Institute of Chemical Technology Indian oil Odisha Campus, Kharagpur extension Centre, Mouza, Samantpuri Bhubaneswar 751013 Odisha India
| | - Mahender Khatravath
- Department of Chemistry Central university of South Bihar, Gaya SH-7, Panchanpur Road, Karhara, Post Fatehpur, Gaya Bihar 824236 India
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry Institute of Chemical Technology Indian oil Odisha Campus, Kharagpur extension Centre, Mouza, Samantpuri Bhubaneswar 751013 Odisha India
| |
Collapse
|
25
|
Fu D, Dong J, Wang J, Xu J. Direct 1,2‐Oxosulfenylation of Acetylenic Sulfones with DMSO. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100219] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Duo Fu
- State Key Laboratory of Chemical Resource Engineering Department of Organic Chemistry College of Chemistry Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Jun Dong
- State Key Laboratory of Chemical Resource Engineering Department of Organic Chemistry College of Chemistry Beijing University of Chemical Technology Beijing 100029 P. R. China
- School of Chemistry and Environmental Engineering Yancheng Teachers University Yancheng 224007 P. R. China
| | - Jiayi Wang
- State Key Laboratory of Chemical Resource Engineering Department of Organic Chemistry College of Chemistry Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering Department of Organic Chemistry College of Chemistry Beijing University of Chemical Technology Beijing 100029 P. R. China
| |
Collapse
|
26
|
Fei X, Zhao Y, Yang F, Guan X, Li Z, Wang D, Zhou M, Yang Y, He B. Construction of Oxepino[3,2‐
b
]indoles via [4+3] Annulation of 2‐Ylideneoxindoles with Crotonate‐Derived Sulfur Ylides. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001580] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xing‐Hai Fei
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Yong‐Long Zhao
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Fen‐Fen Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Xiang Guan
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Zong‐Qin Li
- Department of Neurology Sichuan Mianyang 404 Hospital Mianyang 621000 People's Republic of China
| | - Da‐Peng Wang
- Key Laboratory of Environmental Pollution Monitoring and Disease Control Ministry of Education Guizhou Medical University Guiyang 550025 People's Republic of China
| | - Meng Zhou
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Yuan‐Yong Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 People's Republic of China
| | - Bin He
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 People's Republic of China
| |
Collapse
|
27
|
Tanpure SD, Kale BS, Liu RS. Gold(I)-Catalyzed Oxidative 1,4-Additions of 3-En-1-ynamide with Nitrones via Carbon- versus Nitrogen-Addition Chemoselectivity. Org Lett 2021; 23:1394-1399. [PMID: 33544607 DOI: 10.1021/acs.orglett.1c00055] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This work reports gold-catalyzed 1,4-oxofunctionalizations of 3-en-1-ynamides with nitrones, yielding two distinct E-configured products. We obtained 1,4-oxoarylation products from 3-en-1-ynamides bearing C(4)-electron-donating substituents and 1,4-oxoamination products from those analogues bearing C(4)-aryl substituents. We propose that if vinylgold carbenes are stable, imines undergo a para-arylation on these gold carbenes. If vinylgold carbenes are highly electron-deficient, this N-attack is irreversible to enable 1,4-oxoaminations.
Collapse
Affiliation(s)
- Sudhakar Dattatray Tanpure
- Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Balaji S Kale
- Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Rai-Shung Liu
- Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| |
Collapse
|
28
|
Saranya PV, Neetha M, Aneeja T, Anilkumar G. Transition metal-catalyzed synthesis of spirooxindoles. RSC Adv 2021; 11:7146-7179. [PMID: 35423236 PMCID: PMC8695110 DOI: 10.1039/d1ra00139f] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 02/03/2021] [Indexed: 12/17/2022] Open
Abstract
Spirooxindole is a principal bioactive agent and is observed in several natural products including alkaloids. They are broadly studied in the pharmaceutical field and have a significant role in the evolution of drugs such as anti-viral, anti-cancer, anti-microbial etc. In organic chemistry, an indispensable role is presented by transition metal catalysts. An effective synthetic perspective to spirooxindoles is the use of transition metals as the catalyst. This review discusses the synthesis of spirooxindoles catalyzed by transition metals and covers literature up to 2020.
Collapse
Affiliation(s)
- P V Saranya
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India
| | - Mohan Neetha
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India
| | - Thaipparambil Aneeja
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India
- Advanced Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India
- Institute for Integrated Programmes and Research in Basic Sciences (IIRBS), Mahatma Gandhi University Priyadarsini Hills P O Kottayam Kerala 686560 India
| |
Collapse
|
29
|
Yuan S, Zhang J, Zhang D, Wei D, Zuo J, Song J, Yu B, Liu HM. Cu(OTf) 2-Catalyzed Intramolecular Radical Cascade Reactions for the Diversity-Oriented Synthesis of Quinoline-Annulated Polyheterocyclic Frameworks. Org Lett 2021; 23:1445-1450. [PMID: 33560123 DOI: 10.1021/acs.orglett.1c00129] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Compound libraries with high levels of structural diversity and novelty could cover underexploited chemical space and thus have been highly pursued in drug discovery. Herein, we report the first Cu(OTf)2-catalyzed intramolecular radical cascade reactions that enable the diversity-oriented synthesis of quinoline-annulated polyheterocyclic compounds (7 unique scaffolds, 66 examples) in an efficient manner. This work demonstrates an alternative route to access the natural product- and druglike compound collection with high levels of structural diversity and novelty.
Collapse
Affiliation(s)
- Shuo Yuan
- School of Pharmaceutical Sciences, Zhengzhou University, Science Road 100, Zhengzhou 450001, China
| | - Jingya Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Science Road 100, Zhengzhou 450001, China
| | - Danqing Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Science Road 100, Zhengzhou 450001, China
| | - Donghui Wei
- College of Chemistry, and Institute of Green Catalysis, Zhengzhou University, Science Road 100, Zhengzhou 450001, China
| | - Jiahui Zuo
- School of Pharmaceutical Sciences, Zhengzhou University, Science Road 100, Zhengzhou 450001, China
| | - Jian Song
- School of Pharmaceutical Sciences, Zhengzhou University, Science Road 100, Zhengzhou 450001, China
| | - Bin Yu
- School of Pharmaceutical Sciences, Zhengzhou University, Science Road 100, Zhengzhou 450001, China
| | - Hong-Min Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Science Road 100, Zhengzhou 450001, China
| |
Collapse
|
30
|
Li XS, Xu DT, Niu ZJ, Li M, Shi WY, Wang CT, Wei WX, Liang YM. Gold-Catalyzed Tandem Annulations of Pyridylhomopropargylic Alcohols with Propargyl Alcohols. Org Lett 2021; 23:832-836. [PMID: 33507087 DOI: 10.1021/acs.orglett.0c04070] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A gold-catalyzed tandem annulation of propargylic alcohols and pyridylhomopropargylic alcohols is achieved, providing an atom-economical approach to a diverse set of polycyclic dihydrobenzofurans in good yields. The reaction proceeds via the 5-endo-dig cyclization/Meyer-Schuster rearrangement/Friedel-Crafts-type pathway. In this way, three C-C bonds and one C-O bond form to give a polycyclic skeleton in a one-pot process. Moreover, the products exhibit unique optical properties, which reveal their potential application value.
Collapse
Affiliation(s)
- Xue-Song Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Dan-Tong Xu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Zhi-Jie Niu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Ming Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Wei-Yu Shi
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Cui-Tian Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Wan-Xu Wei
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| |
Collapse
|
31
|
Hendrich CM, Hannibal VD, Eberle L, Hertwig LE, Zschieschang U, Rominger F, Rudolph M, Klauk H, K. Hashmi AS. Gold‐Catalyzed Synthesis of π‐Extended Carbazole‐Based Systems and their Application as Organic Semiconductors. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001461] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Christoph M. Hendrich
- Organisch-Chemisches Institut Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Valentin D. Hannibal
- Organisch-Chemisches Institut Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Lukas Eberle
- Organisch-Chemisches Institut Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Leif E. Hertwig
- Organisch-Chemisches Institut Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Ute Zschieschang
- Max Planck Institute for Solid State Research Heisenbergstr. 1 70569 Stuttgart Germany
| | - Frank Rominger
- Organisch-Chemisches Institut Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Hagen Klauk
- Max Planck Institute for Solid State Research Heisenbergstr. 1 70569 Stuttgart Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches Institut Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany
| |
Collapse
|
32
|
Chen J, Zhang X, Wu J, Wang R, Lei C, An Y. Facile one-pot synthesis of diarylacetylenes from arylaldehydes via an addition-double elimination process. Org Biomol Chem 2021; 19:4701-4705. [PMID: 33988213 DOI: 10.1039/d1ob00627d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical one-pot protocol has been developed to synthesize diarylacetylenes from arylaldehydes by treatment with 1-(arylmethyl)benzotriazoles and LiN(SiMe3)2. The reaction proceeded through imine formation, Mannich-type addition and double elimination to deliver products in up to 99% yields with broad substrate scope. In addition, gram-scale synthesis of 1-bromo-4-(phenylethynyl)benzene has been demonstrated.
Collapse
Affiliation(s)
- Jianyang Chen
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, China.
| | - Xuan Zhang
- School of Intelligent Manufacturing Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, China
| | - Jiajun Wu
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, China.
| | - Rui Wang
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, China.
| | - Chunlin Lei
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, China.
| | - Yanan An
- College of Pharmacy, Chongqing University of Arts and Sciences, Yongchuan 402160, China
| |
Collapse
|
33
|
Qiu W, Wang W, Liu Y, Fan R. Synthesis of N-indolated amino acids or peptides from 2-alkynylanilines via a dearomatization process. Org Chem Front 2021. [DOI: 10.1039/d1qo01257f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A process for the rapid synthesis of N-indolated amino acids or peptides from readily available 2-alkynylanilines via dearomatization was reported.
Collapse
Affiliation(s)
- Weilian Qiu
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Weiyi Wang
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Yin Liu
- Department of Breast Surgery, Fudan University Shanghai Cancer Center/Cancer Institute and Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Renhua Fan
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China
| |
Collapse
|
34
|
Zhou S, Liu Q, Bao M, Huang J, Wang J, Hu W, Xu X. Gold(i)-catalyzed redox transformation of o-nitroalkynes with indoles for the synthesis of 2,3′-biindole derivatives. Org Chem Front 2021. [DOI: 10.1039/d1qo00134e] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A gold(i)-catalyzed cascade reaction of o-nitroalkynes with indoles has been reported for the rapid assembly of 2-indolyl indolone N-oxides, which exhibit high anticancer potency against SCLC cells.
Collapse
Affiliation(s)
- Su Zhou
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Qianqian Liu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Ming Bao
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Jie Huang
- Guangdong Lung Cancer Institute
- Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer
- Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences
- Guangzhou 510080
- China
| | - Junjian Wang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Xinfang Xu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| |
Collapse
|
35
|
Wang Q, May JA. Formation of β-Oxo- N-vinylimidates via Intermolecular Ester Incorporation in Huisgen Cyclization/Carbene Cascade Reactions. Org Lett 2020; 22:9579-9584. [PMID: 33300803 DOI: 10.1021/acs.orglett.0c03619] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Unusual intermolecular trapping of esters by carbenes generated via a Huisgen cyclization/retroelectrocyclization/dediazotization cascade reaction is presented. β-Oxo-N-vinylimidates could be obtained in one step from propargyl carbonazidates. Mechanistic control experiments suggested reversible dipole formation by ester addition to the carbene, and nitrogen attack to the ester carbonyl was irreversibly followed by stereoselective decarboxylative elimination to give the Z-vinyl imidate. The cross-conjugated enone, imidate, and enamine functional groups in the β-oxo-N-vinylimidates offer novel syntheses of functionalized oxazoles.
Collapse
Affiliation(s)
- Qinxuan Wang
- Department of Chemistry, University of Houston, 3585 Cullen Boulevard, Fleming Building Room 112, Houston, Texas 77204-5003, United States
| | - Jeremy A May
- Department of Chemistry, University of Houston, 3585 Cullen Boulevard, Fleming Building Room 112, Houston, Texas 77204-5003, United States
| |
Collapse
|
36
|
Shan XH, Yang B, Qu JP, Kang YB. CuSO 4-Catalyzed dual annulation to synthesize O, S or N-containing tetracyclic heteroacenes. Chem Commun (Camb) 2020; 56:4063-4066. [PMID: 32162642 DOI: 10.1039/d0cc01172j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this work, CuSO4 is utilized as a practical redox catalyst for tandem dual annulation in the synthesis of indole-fused tetracyclic heteroacenes, which are important skeletons in both medicinal chemistry and materials chemistry. The preparation of such skeletons in a convenient and efficient manner is in high demand. This method realizes the modular synthesis of benzofuro-, benzothieno-, and indoloindoles from abundant feedstocks such as 2-halobenzyl halides and nitrile derivatives in up to 99% yields, providing a rapid access to diverse indole-fused heteroacenes with biological or optoelectronic properties.
Collapse
Affiliation(s)
- Xiang-Huan Shan
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Bo Yang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Jian-Ping Qu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yan-Biao Kang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| |
Collapse
|
37
|
Zheng L, Hua R. Recent Advances in Construction of Polycyclic Natural Product Scaffolds via One-Pot Reactions Involving Alkyne Annulation. Front Chem 2020; 8:580355. [PMID: 33195069 PMCID: PMC7596902 DOI: 10.3389/fchem.2020.580355] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 08/31/2020] [Indexed: 12/12/2022] Open
Abstract
Polycyclic scaffolds are omnipresent in natural products and drugs, and the synthetic strategies and methods toward construction of these scaffolds are of particular importance. Compared to simple cyclic ring systems, polycyclic scaffolds have higher structure complexity and diversity, making them suitable for charting broader chemical space, yet bringing challenges for the syntheses. In this review, we surveyed progress in the past decade on synthetic methods for polycyclic natural product scaffolds, in which the key steps are one-pot reactions involving intermolecular or intramolecular alkyne annulation. Synthetic strategies of selected polycyclic carbocycles and heterocycles with at least three fused, bridged, or spiro rings are discussed with emphasis on the synthetic efficiency and product diversity. Recent examples containing newly developed synthetic concepts or toolkits such as collective and divergent total synthesis, gold catalysis, C–H functionalization, and dearomative cyclization are highlighted. Finally, several “privileged synthetic strategies” for “privileged polycyclic scaffolds” are summarized, with discussion of remained challenges and future perspectives.
Collapse
Affiliation(s)
- Liyao Zheng
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, China
| | - Ruimao Hua
- Department of Chemistry, Tsinghua University, Beijing, China
| |
Collapse
|
38
|
Li Y, Zhao X. Assessing counterion effects in gold-catalyzed domino spirocyclization: an industrial perspective on hydrogen bonding. Phys Chem Chem Phys 2020; 22:19606-19612. [PMID: 32936160 DOI: 10.1039/d0cp03367g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We herein report a computational study of the hydrogen bonding in gold-catalyzed ipso-cyclization to diverse polyheterocyclic frameworks. The different roles of these hydrogen bonds are analyzed for the different ipso-cyclization reactions. The fine-tunability of the electronic as well as steric properties of gold counterions contributed substantially to the popularity of the dearomatization reaction, with robust applications in total synthesis and gold catalysis. We have found correlation between the hydrogen bonding parameters and chemoselectivity in gold-catalyzed spirocyclization, playing critical roles in determining the reaction direction of counterion-based enantioselective gold catalysis. The expanded use of counterions via hydrogen bonding interaction can occupy an important role in the future concerning catalyst optimization in gold catalysis.
Collapse
Affiliation(s)
- Yunhe Li
- Institute for Chemical Physics & Department of Chemistry, School of Science, State Key Laboratory of Electrical Insulation and Power Equipment & MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Xiang Zhao
- Institute for Chemical Physics & Department of Chemistry, School of Science, State Key Laboratory of Electrical Insulation and Power Equipment & MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China.
| |
Collapse
|
39
|
Liu X, Wang Z, Zhai T, Luo C, Zhang Y, Chen Y, Deng C, Liu R, Ye L. Copper‐Catalyzed Azide–Ynamide Cyclization to Generate α‐Imino Copper Carbenes: Divergent and Enantioselective Access to Polycyclic N‐Heterocycles. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007206] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xin Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Ze‐Shu Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Tong‐Yi Zhai
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Chen Luo
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Yi‐Ping Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Yang‐Bo Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Chao Deng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 China
| | - Rai‐Shung Liu
- Department of Chemistry National Tsing-Hua University Hsinchu Taiwan 30013 Republic of China
| | - Long‐Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory of Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
| |
Collapse
|
40
|
Liu X, Wang ZS, Zhai TY, Luo C, Zhang YP, Chen YB, Deng C, Liu RS, Ye LW. Copper-Catalyzed Azide-Ynamide Cyclization to Generate α-Imino Copper Carbenes: Divergent and Enantioselective Access to Polycyclic N-Heterocycles. Angew Chem Int Ed Engl 2020; 59:17984-17990. [PMID: 32621338 DOI: 10.1002/anie.202007206] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/11/2020] [Indexed: 01/23/2023]
Abstract
Here an efficient copper-catalyzed cascade cyclization of azide-ynamides via α-imino copper carbene intermediates is reported, representing the first generation of α-imino copper carbenes from alkynes. This protocol enables the practical and divergent synthesis of an array of polycyclic N-heterocycles in generally good to excellent yields with broad substrate scope and excellent diastereoselectivities. Moreover, an asymmetric azide-ynamide cyclization has been achieved with high enantioselectivities (up to 98:2 e.r.) by employing BOX-Cu complexes as chiral catalysts. Thus, this protocol constitutes the first example of an asymmetric azide-alkyne cyclization. The proposed mechanistic rationale for this cascade cyclization is further supported by theoretical calculations.
Collapse
Affiliation(s)
- Xin Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Ze-Shu Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Tong-Yi Zhai
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Chen Luo
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Yi-Ping Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Yang-Bo Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Chao Deng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Rai-Shung Liu
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan, 30013, Republic of China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| |
Collapse
|
41
|
Ye LW, Zhu XQ, Sahani RL, Xu Y, Qian PC, Liu RS. Nitrene Transfer and Carbene Transfer in Gold Catalysis. Chem Rev 2020; 121:9039-9112. [PMID: 32786423 DOI: 10.1021/acs.chemrev.0c00348] [Citation(s) in RCA: 173] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Catalytic transformations involving metal carbenes are considered one of the most important aspects of homogeneous transition metal catalysis. Recently, gold-catalyzed generation of gold carbenes from readily available alkynes represents a significant advance in metal carbene chemistry. This Review summarizes the advances in the gold-catalyzed nitrene-transfer reactions of alkynes with nitrogen-transfer reagents, such as azides, nitrogen ylides, isoxazoles, and anthranils, and gold-catalyzed carbene-transfer reactions, involving oxygen atom-transfer reactions of alkynes with nitro compounds, nitrones, sulfoxides, and pyridine N-oxides, through the presumable α-imino gold carbene and α-oxo gold carbene intermediates, respectively. Gold-catalyzed processes are reviewed by highlighting their product diversity, selectivity, and applicability, and the mechanistic rationale is presented where possible.
Collapse
Affiliation(s)
- Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
| | - Xin-Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Rajkumar Lalji Sahani
- Department of Chemistry, National Tsing-Hua University, Hsinchu 30013, Taiwan, Republic of China
| | - Yin Xu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Peng-Cheng Qian
- Institute of New Materials & Industry Technology, College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Rai-Shung Liu
- Department of Chemistry, National Tsing-Hua University, Hsinchu 30013, Taiwan, Republic of China
| |
Collapse
|
42
|
Huang J, Su H, Bao M, Qiu L, Zhang Y, Xu X. Gold(iii)-catalyzed azide-yne cyclization/O-H insertion cascade reaction for the expeditious construction of 3-alkoxy-4-quinolinone frameworks. Org Biomol Chem 2020; 18:3888-3892. [PMID: 32373897 DOI: 10.1039/d0ob00745e] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A gold-catalyzed 6-endo-dig azide-yne cyclization/O-H insertion cascade reaction of azide-tethered alkynes with alcohols has been developed, and it provides an expeditious access to 3-alkoxy-4-quinoline derivatives in good to high yields under mild and neutral reaction conditions with broad substrate generality. The utility of this method is emphasized by a scalable experiment and concise total synthesis of a bioactive natural product Leiokinine A, and other bioactive quinoline analogs.
Collapse
Affiliation(s)
- Jingjing Huang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China.
| | - Han Su
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Ming Bao
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China.
| | - Lihua Qiu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yuanqing Zhang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China.
| | - Xinfang Xu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China. and College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| |
Collapse
|
43
|
Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2018. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.213051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
44
|
Chintawar CC, Mane MV, Tathe AG, Biswas S, Patil NT. Gold-Catalyzed Cycloisomerization of Pyridine-Bridged 1,8-Diynes: An Expedient Access to Luminescent Cycl[3.2.2]azines. Org Lett 2019; 21:7109-7113. [DOI: 10.1021/acs.orglett.9b02677] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Chetan C. Chintawar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Manoj V. Mane
- Physical Chemistry Division, CSIR − National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
- KAUST Catalysis Centre, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Akash G. Tathe
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Suprakash Biswas
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Nitin T. Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| |
Collapse
|
45
|
Liu A, Han Q, Zhang X, Li B, Huang Q. Transition-Metal-Controlled Synthesis of 11H-Benzo[a]carbazoles and 6-Alkylidene-6H-isoindo[2,1-a]indoles via Sequential Intermolecular/Intramolecular Cross-Dehydrogenative Coupling from 2-Phenylindoles. Org Lett 2019; 21:6839-6843. [DOI: 10.1021/acs.orglett.9b02476] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Anyi Liu
- Fujian Key Laboratory of Polymer Materials, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
| | - Qingshuai Han
- Fujian Key Laboratory of Polymer Materials, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
| | - Xiaofeng Zhang
- Fujian Key Laboratory of Polymer Materials, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
| | - Buhong Li
- MOE Key Laboratory of Optoelectronic Science and Technology for Medicine, Fujian Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
| | - Qiufeng Huang
- Fujian Key Laboratory of Polymer Materials, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
| |
Collapse
|
46
|
Diastereoselective pot-and atom-economical synthesis of densely-substituted polycyclic 1,2- and 1,2,3-fused indole scaffolds. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.07.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
47
|
Jia S, Dong G, Ao C, Jiang X, Hu W. Rhodium-Catalyzed Formal C-O Insertion in Carbene/Alkyne Metathesis Reactions: Synthesis of 3-Substituted 3 H-Indol-3-ols. Org Lett 2019; 21:4322-4326. [PMID: 31120759 DOI: 10.1021/acs.orglett.9b01492] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An efficient and novel rhodium-catalyzed formal C-O insertion reaction of alkyne-tethered diazo compounds for the synthesis of 3 H-indol-3-ols is described. A type of donor/donor rhodium carbene generated in situ via a carbene/alkyne metathesis (CAM) process is the key intermediate and terminates in a unique transformation different from donor/acceptor carbenoids. In addition, 18O-labeling experiments indicate that intramolecular oxygen-atom transfer from the amide group to the carbon-carbon triple bond occurs during this transformation.
Collapse
Affiliation(s)
- Shikun Jia
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , China
| | - Guizhi Dong
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , China
| | - Chaoqun Ao
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , China
| | - Xianxing Jiang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , China
| |
Collapse
|
48
|
Pankova AS, Shestakov AN, Kuznetsov MA. Cyclization of ortho-ethynylbiaryls as an emerging versatile tool for the construction of polycyclic arenes. RUSSIAN CHEMICAL REVIEWS 2019. [DOI: 10.1070/rcr4855] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Cyclization and cycloisomerization of ortho-aryl(ethynyl)arenes provide an easy direct access to fused polycyclic aromatic carbo- and heterocycles. This methodology has demonstrated an impressive progress in the recent years. The goal of this review is to give a comprehensive outlook on the synthetic potential, scope, limitations, and mechanistic aspects of the cyclization reactions. The material is arranged according to the activation method that can be used to induce cyclization: pyrolysis, metal catalysis, electrophilic activation, radical induction, base catalysis. Particular attention is paid to the specificity of ortho-ethynylbiaryls with a heterocyclic central core.
The bibliography includes 257 references.
Collapse
|
49
|
Wei H, Zhou S, Qiu L, Qian Y, Hu W, Xu X. Gold‐Catalyzed Dual Annulation of Homopropargyl Alcohols with Nitrones: Synthesis of Tetrahydropyrano[4,3‐
b
]indole Scaffolds. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900426] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Hanlin Wei
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University, Guangzhou Guangdong 510006 People's Republic of China
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 People's Republic of China
| | - Su Zhou
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University, Guangzhou Guangdong 510006 People's Republic of China
| | - Lihua Qiu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 People's Republic of China
| | - Yu Qian
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University, Guangzhou Guangdong 510006 People's Republic of China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University, Guangzhou Guangdong 510006 People's Republic of China
| | - Xinfang Xu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical SciencesSun Yat-sen University, Guangzhou Guangdong 510006 People's Republic of China
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 People's Republic of China
| |
Collapse
|
50
|
Abstract
The favorability of ring closure reactions as per Baldwin rules has gained immense importance recently. This is evident from the current literature such as research articles, reviews, and books that have been published in this area. This review covers the recent applications of 5-endo-dig cyclization in organic synthesis focusing in the last two decades. A variety of 5-membered heterocycles as well as carbocycles could be synthesized via 5-endo-dig cyclization reactions. The important applications of 5-endo-dig cyclization in organic synthesis covering different aspects have been summarized in this review.
Collapse
|