1
|
Efficient synthesis of 3-aminocarbazoles from N-sulfonyl-1,2,3-triazoles and 2-alkenylindole. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02111-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
2
|
Fang F, Zheng H, Mao G, Chen S, Deng GJ. Metal- and Solvent-Free Synthesis of Tetrahydrobenzo[ c]carbazolones through NaI-Catalyzed Formal [4 + 2] Annulation. J Org Chem 2022; 87:6052-6063. [PMID: 35470673 DOI: 10.1021/acs.joc.2c00315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel strategy for the preparation of functional carbazoles through NaI-catalyzed formal [4 + 2] annulation of 2-(indol-3-yl)cyclohexanones and alkynes/alkenes has been developed. The present approach started from easily available raw materials and provided a variety of tetrahydrobenzo[c]carbazolones in satisfactory yields under metal- and solvent-free conditions. Furthermore, the products could be further transformed into structurally valuable carbazole-based conjugated derivatives.
Collapse
Affiliation(s)
- Fang Fang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China.,College of Materials and Chemical Engineering, Hunan City University, Yiyang 413000, P. R. China
| | - Haolin Zheng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China
| | - Guojiang Mao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China
| | - Shanping Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China
| |
Collapse
|
3
|
Chen X, Liu H, Gao H, Li P, Miao T, Li H. Electrochemical Regioselective Cross-Dehydrogenative Coupling of Indoles with Xanthenes. J Org Chem 2021; 87:1056-1064. [PMID: 34964353 DOI: 10.1021/acs.joc.1c02346] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An electrochemical cross-dehydrogenative coupling of indoles with xanthenes has been established at room temperature. This coupling reaction could proceed in the absence of any catalyst or external oxidant, and generate the indole derivatives in moderate yields. Mechanistic experiments support that a radical pathway maybe involved in this reaction system.
Collapse
Affiliation(s)
- Xinyu Chen
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Hongqiang Liu
- China Synchem Technology Co., Ltd., Bengbu, Anhui 233000, P. R. China
| | - Hui Gao
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China.,Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, P. R. China
| | - Pinhua Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Tao Miao
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Hongji Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| |
Collapse
|
4
|
Chemo‐ and Regioselective Synthesis of Functionalized 1
H
‐imidazo[1,5‐
a
]indol‐3(2
H
)‐ones via a Redox‐Neutral Rhodium(III)‐Catalyzed [4+1] Annulation between Indoles and Alkynes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100555] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
5
|
Sahoo S, Pal S. Rapid Access to Benzimidazo[1,2- a]quinoline-Fused Isoxazoles via Pd(II)-Catalyzed Intramolecular Cross Dehydrogenative Coupling: Synthetic Versatility and Photophysical Studies. J Org Chem 2021; 86:4081-4097. [PMID: 33626283 DOI: 10.1021/acs.joc.0c02926] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
An efficient and atom-economical palladium-catalyzed intramolecular cross dehydrogenative coupling (CDC) reaction has been developed for the construction of highly π-conjugated benzimidazo[1,2-a]quinoline-fused isoxazole scaffolds using molecular oxygen as sole oxidant. The approach portrayed wide substrate scope with good functional group tolerance and depicted a useful tool for the generation of fluorescence active compounds with high quantum yield. Synthetic versatility of the method via Fe-catalyzed reductive isoxazole ring cleavage toward pyridine, pyrimidine, pyrazole fused heteropolycyclic compounds has been showcase.
Collapse
Affiliation(s)
- Subrata Sahoo
- Organic Chemistry Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Odisha 752050, India
| | - Shantanu Pal
- Organic Chemistry Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Odisha 752050, India
| |
Collapse
|
6
|
Wu CJ, Cao WX, Chen B, Tung CH, Wu LZ. Tandem [2 + 2] Cycloaddition/Rearrangement toward Carbazoles by Visible-Light Photocatalysis. Org Lett 2021; 23:2135-2139. [DOI: 10.1021/acs.orglett.1c00290] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Cheng-Juan Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, the Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Wen-Xiao Cao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, the Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, the Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, the Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, the Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| |
Collapse
|
7
|
Banerjee A, Kundu S, Bhattacharyya A, Sahu S, Maji MS. Benzannulation strategies for the synthesis of carbazoles, indolocarbazoles, benzocarbazoles, and carbolines. Org Chem Front 2021. [DOI: 10.1039/d1qo00092f] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review presents a critical and authoritative analysis of several exciting benzannulation approaches developed in the past decade for the construction of carbazoles, indolocarbazoles, benzocarbazoles, and carbolines.
Collapse
Affiliation(s)
- Ankush Banerjee
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Samrat Kundu
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Arya Bhattacharyya
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Samrat Sahu
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Modhu Sudan Maji
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| |
Collapse
|
8
|
Debnath S, Das T, Pati TK, Majumdar S, Maiti DK. Metal-Free Indole-Phenacyl Bromide Cyclization: A Regioselective Synthesis of 3,5-Diarylcarbazoles. J Org Chem 2020; 85:13272-13279. [PMID: 33006280 DOI: 10.1021/acs.joc.0c01670] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A metal-free, simultaneous triple C-C coupling cyclization reaction between phenacyl bromides and indoles is discovered in a highly regioselective fashion to furnish 3,5-diarylcarbazoles. DMAP is utilized as the only reagent for the unusual and rapid cyclization reaction to furnish all new carbazole compounds through installation of a great diversity of substituents. A plausible radical mechanism for the new reaction is predicted by conducting various control experiments, competitive reactions, furoindole formation, and ESI-MS analyses of the ongoing cyclization reaction.
Collapse
Affiliation(s)
- Sudipto Debnath
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Tuluma Das
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Tanmay K Pati
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Swapan Majumdar
- Department of Chemistry, Tripura University, Suryamaninagar 799 022, India
| | - Dilip K Maiti
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| |
Collapse
|
9
|
Cui H, Liu S, Xiao X. Palladium Catalyzed Direct Alkenylation of Dihydropyrrolo[2,1‐
a
]isoquinolines through the Oxidative Heck Reaction. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000959] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hai‐Lei Cui
- Laboratory of Asymmetric Synthesis Chongqing University of Arts and Sciences 319 Honghe Ave. 402160 Chongqing, Yongchuan P.R. China
| | - Si‐Wei Liu
- Laboratory of Asymmetric Synthesis Chongqing University of Arts and Sciences 319 Honghe Ave. 402160 Chongqing, Yongchuan P.R. China
- Tonichem Pharmaceutical Technology Co., Ltd. 516008 Huizhou P.R. China
| | - Xue Xiao
- Laboratory of Asymmetric Synthesis Chongqing University of Arts and Sciences 319 Honghe Ave. 402160 Chongqing, Yongchuan P.R. China
- Tonichem Pharmaceutical Technology Co., Ltd. 516008 Huizhou P.R. China
| |
Collapse
|
10
|
Abstract
The Pd-mediated cross-coupling of (hetero)arenes with alkenes may be an effective method for the formation of a C–C bond from two C–H bonds. Discovered by Fujiwara and co-workers in 1967, this reaction led to a number of reports that we firstly highlighted in 2011 (review with references till June 2010) and for which, we retained the name “dehydrogenative Heck reaction”. The topic, especially the reactions of five-membered heteroarenes, has been the subject of intensive research over the last ten years. The present review is limited to these dehydrogenative Heck reactions published since 2010, underlining the progress of the procedures.
Collapse
|
11
|
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
|
12
|
Kumar M, Verma S, Mishra PK, Verma AK. Cu(II)-Mediated Ortho-C-H Amination of Arenes with Free Amines. J Org Chem 2019; 84:8067-8079. [PMID: 31117576 DOI: 10.1021/acs.joc.9b00931] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Copper-mediated direct ortho-C-H amination of arenes has been accomplished with the aid of easily removable bidentate pyridine N-oxide as a directing group. The use of free cyclic secondary amines and anilines as aminating agents and inexpensive copper acetate makes the strategy more effective and favorable from the economic point of view. This reaction is compatible with a wide range of functional groups to synthesize a variety of amine-containing products of high interest. This method also allows the short synthesis of the central scaffold of pharmaceutically relevant Staphylococcus aureus Sortase A inhibitors.
Collapse
Affiliation(s)
- Manoj Kumar
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Shalini Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Pawan K Mishra
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Akhilesh K Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| |
Collapse
|
13
|
Yadav S, Hazra R, Singh A, Ramasastry SSV. Substituent-Guided Palladium-Ene Reaction for the Synthesis of Carbazoles and Cyclopenta[ b]indoles. Org Lett 2019; 21:2983-2987. [PMID: 30985137 DOI: 10.1021/acs.orglett.9b00410] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
An efficient palladium-catalyzed intramolecular Trost-Oppolzer type Alder-ene strategy was developed for the synthesis of carbazoles and cyclopenta[ b]indoles from easily accessible(3-allyl-1 H-indol-2-yl)methyl acetates. This strategy was extended for the synthesis of naphthalenes and dibenzobenzofurans as well. In addition, a short synthesis of antibacterial and antifungal natural product glycozoline and its analogues was also achieved.
Collapse
Affiliation(s)
- Sonu Yadav
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Mohali , Sector 81, Manauli PO , S. A. S. Nagar , Punjab 140306 , India
| | - Raju Hazra
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Mohali , Sector 81, Manauli PO , S. A. S. Nagar , Punjab 140306 , India
| | - Animesh Singh
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Mohali , Sector 81, Manauli PO , S. A. S. Nagar , Punjab 140306 , India
| | - S S V Ramasastry
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Mohali , Sector 81, Manauli PO , S. A. S. Nagar , Punjab 140306 , India
| |
Collapse
|
14
|
Pd(II) supramolecular cage-catalyzed successive oxidative coupling: One-pot and regioselective synthesis of functionalized carbazoles from indoles. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.02.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
15
|
Ni P, Tan J, Zhao W, Huang H, Xiao F, Deng GJ. Metal-Free Double Csp2–H Bond Functionalization: Strategy for Synthesizing Benzo[a]carbazoles from 2-Arylindoles and Acetophenones/Alkynes. Org Lett 2019; 21:3687-3691. [DOI: 10.1021/acs.orglett.9b01138] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Penghui Ni
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Jing Tan
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Wenqi Zhao
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Fuhong Xiao
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| |
Collapse
|
16
|
Koubachi J, El Brahmi N, Guillaumet G, El Kazzouli S. Oxidative Alkenylation of Fused Bicyclic Heterocycles. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900199] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jamal Koubachi
- Faculté Polydisciplinaire de Taroudant; Laboratoire de Chimie Appliquée et Environnement (LACAPE); Université Ibn Zohr d′Agadir; B.P 271 83000 Taroudant Morocco
| | - Nabil El Brahmi
- Euromed Research Center; Euromed Faculty of Engineering; Euromed University of Fes; Route de Meknes 30000 Fès Morocco
| | - Gérald Guillaumet
- Institut de Chimie Organique et Analytique (ICOA); Université d'Orléans, UMR CNRS 7311; BP 6759 45067 Orléans Cedex 2 France
| | - Saïd El Kazzouli
- Euromed Research Center; Euromed Faculty of Engineering; Euromed University of Fes; Route de Meknes 30000 Fès Morocco
| |
Collapse
|
17
|
Yang Y, Huang J, Tan H, Kong L, Wang M, Yuan Y, Li Y. Synthesis of cyano-substituted carbazoles via successive C-C/C-H cleavage. Org Biomol Chem 2019; 17:958-965. [PMID: 30631868 DOI: 10.1039/c8ob03031f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A highly efficient protocol for the synthesis of polysubstituted cyano carbazoles has been developed. This process is realized through the tandem reactions of Cs2CO3 promoted C-C σ-bond activation of α-cyano ketones followed by Fe-catalyzed selective C-H and/or C-C bond activations. Two of the sp2 C-H bonds are functionalized, and two of the C-C σ-bonds are cleaved involving a 1,2-acyl migration during the reaction process.
Collapse
Affiliation(s)
- Yajie Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
| | | | | | | | | | | | | |
Collapse
|
18
|
Aggarwal T, Sushmita S, Verma AK. Recent advances in the synthesis of carbazoles from indoles. Org Biomol Chem 2019; 17:8330-8342. [DOI: 10.1039/c9ob01381d] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Synthesis of carbazoles using indoles as precursors through CH activation/annulation.
Collapse
Affiliation(s)
- Trapti Aggarwal
- Synthetic Organic Chemistry Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Sushmita Sushmita
- Synthetic Organic Chemistry Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Akhilesh K. Verma
- Synthetic Organic Chemistry Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| |
Collapse
|
19
|
Garg V, Kumar P, Verma AK. Substrate-Controlled Regio- and Stereoselective Synthesis of ( Z)- and ( E)- N-Styrylated Carbazoles, Aza-carbazoles, and γ-Carbolines via Hydroamination of Alkynes. J Org Chem 2018; 83:11686-11702. [PMID: 30141931 DOI: 10.1021/acs.joc.8b01642] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We report herein the substrate-controlled regio- and stereoselective hydroamination of carbazoles, aza-carbazoles, and γ-carbolines with functionalized aromatic as well as aliphatic alkynes in a KOH/DMSO system in good yields. The electronic effect of the substrates governs the stereochemistry of the product. Electron-donating alkynes provided ( Z)-stereoselective products, and electron-withdrawing alkynes provided ( E)-stereoselective products. This approach also provides an easy route for the synthesis of mono- and bis-hydroaminated product. The deuterium-labeling studies were also conducted to support the mechanistic pathway.
Collapse
Affiliation(s)
- Vineeta Garg
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Pradeep Kumar
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Akhilesh K Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| |
Collapse
|
20
|
Verma S, Mishra PK, Kumar M, Sur S, Verma AK. Transition-Metal-Free Access to Pyridocarbazoles from 2-Alkynylindole-3-carbaldehydes via Azomethine Ylide. J Org Chem 2018; 83:6650-6663. [PMID: 29790341 DOI: 10.1021/acs.joc.8b00980] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An efficient approach for the synthesis of functionalized tetrahydro-pyrido/quinolinocarbazoles from 2-alkynylindole-3-carbaldehydes and l-proline utilizing a metal-free decarboxylative cyclization, ring expansion, and ring contraction strategy via the generation of azomethine ylide was developed. The reaction of 2-alkynylindole-3-carbaldehydes with l-thioproline leads to the formation of γ-carbolines. By virtue of this expedient method, a diverse range of biologically active heteroannulated carbazoles can be synthesized efficiently.
Collapse
Affiliation(s)
- Shalini Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Pawan K Mishra
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Manoj Kumar
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Souvik Sur
- Special Centre for Molecular Medicine , Jawaharlal Nehru University , New Delhi 110067 , India
| | - Akhilesh K Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry , University of Delhi , Delhi 110007 , India
| |
Collapse
|
21
|
Gu Y, Wu F, Yang J. Oxidative [3+3] Annulation of Atropaldehyde Acetals with 1,3‐Bisnucleophiles: An Efficient Method of Constructing Six‐Membered Aromatic Rings, Including Salicylates and Carbazoles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800462] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yanlong Gu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical EngineeringHuazhong University of Science and Technology 1037 Luoyu road, Hongshan District Wuhan 430074 People's Republic of China
- State Key Laboratory for Oxo Synthesis and Selective OxidationLanzhou Institute of Chemical Physics Lanzhou 730000 People's Republic of China
| | - Fengtian Wu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical EngineeringHuazhong University of Science and Technology 1037 Luoyu road, Hongshan District Wuhan 430074 People's Republic of China
| | - Jian Yang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical EngineeringHuazhong University of Science and Technology 1037 Luoyu road, Hongshan District Wuhan 430074 People's Republic of China
| |
Collapse
|
22
|
Yu F, Li D, Wei Y, Kang RM, Guo QX. Catalyst-free and atom-economic synthesis of substituted 1-acetyl and 1-hydroxyl carbazoles. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
23
|
Zhou CN, Xie HH, Zheng ZA, Xiao YC, Li G, Shen YH, Peng WM, Wang L. Synthesis of Terminal Vinylindoles via RhIII
-Catalyzed Direct C−H Alkenylation with Potassium Vinyltrifluoroborate. Chemistry 2018; 24:5469-5473. [DOI: 10.1002/chem.201706025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Indexed: 01/28/2023]
Affiliation(s)
- Chun-Ni Zhou
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical; Environmental Engineering; Jianghan University; 8 Sanjiaohu Road Wuhan 430056 China
| | - Hao-Hao Xie
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical; Environmental Engineering; Jianghan University; 8 Sanjiaohu Road Wuhan 430056 China
| | - Zi-Ang Zheng
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical; Environmental Engineering; Jianghan University; 8 Sanjiaohu Road Wuhan 430056 China
| | - Yuan-Chao Xiao
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical; Environmental Engineering; Jianghan University; 8 Sanjiaohu Road Wuhan 430056 China
| | - Gen Li
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical; Environmental Engineering; Jianghan University; 8 Sanjiaohu Road Wuhan 430056 China
| | - Yang-Huan Shen
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical; Environmental Engineering; Jianghan University; 8 Sanjiaohu Road Wuhan 430056 China
| | - Wang-Ming Peng
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical; Environmental Engineering; Jianghan University; 8 Sanjiaohu Road Wuhan 430056 China
| | - Liang Wang
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical; Environmental Engineering; Jianghan University; 8 Sanjiaohu Road Wuhan 430056 China
| |
Collapse
|
24
|
Huang Y, Guo Z, Song H, Liu Y, Wang Q. Silver–copper co-catalyzed cascade intramolecular cyclization/desulfinamide/dehydrogenation: one-pot synthesis of substituted carbazoles. Chem Commun (Camb) 2018; 54:7143-7146. [DOI: 10.1039/c8cc03600d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multi-substituted carbazoles were obtained from a silver–copper co-catalyzed cascade intramolecular cyclization/desulfinamide/dehydrogenation reaction.
Collapse
Affiliation(s)
- Yuanqiong Huang
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- College of Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| | - Zhonglin Guo
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- College of Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- College of Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- College of Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- College of Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| |
Collapse
|
25
|
Lin K, Jian Y, Zhao P, Zhao CS, Pan WD, Liu S. A rapid construction of a specific quino[4,3-b] carbazolone system and its application for the synthesis of calothrixin B. Org Chem Front 2018. [DOI: 10.1039/c7qo00864c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An efficient methodology is developed for the synthesis of functionalized specific carbazole lactams related to pyrido[4,3-b]- and quino[4,3-b] carbazole alkaloids.
Collapse
Affiliation(s)
- Kai Lin
- Zunyi Medical University
- Zunyi 563000
- P. R. China
- State Key Laboratory of Functions and Applications of Medicinal Plants
- Guizhou Medical University
| | - Yong Jian
- State Key Laboratory of Functions and Applications of Medicinal Plants
- Guizhou Medical University
- Guiyang 550014
- PR China
| | - Peng Zhao
- College of Pharmacy
- Guizhou University
- Guiyang 550014
- PR China
| | - Chun-shen Zhao
- College of Pharmacy
- Guizhou University
- Guiyang 550014
- PR China
| | - Wei-dong Pan
- State Key Laboratory of Functions and Applications of Medicinal Plants
- Guizhou Medical University
- Guiyang 550014
- PR China
| | - Sheng Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants
- Guizhou Medical University
- Guiyang 550014
- PR China
| |
Collapse
|
26
|
Wang H, Wang Z, Wang YL, Zhou RR, Wu GC, Yin SY, Yan X, Wang B. N-Bromosuccinimide (NBS)-Catalyzed C-H Bond Functionalization: An Annulation of Alkynes with Electron Withdrawing Group (EWG)-Substituted Acetyl Indoles for the Synthesis of Carbazoles. Org Lett 2017; 19:6140-6143. [PMID: 29094599 DOI: 10.1021/acs.orglett.7b03021] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An N-bromosuccinimide-catalyzed intermolecular annulation of acetyl indoles with alkynes was developed, allowing for regioselective formation of valuable carbazoles through direct C-H bond functionalization. The readily available catalyst, wide substrate scope, gram scale synthesis, and mild conditions make this method practical. Mechanistic investigations indicate that the bromination of acetyl indole takes place to generate a bromide intermediate, followed by coupling with an alkyne and intramolecular cycloaromatization to furnish carbazole products.
Collapse
Affiliation(s)
- Han Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Haihe Education Park, 38 Tongyan Road, Tianjin 300353, People's Republic of China
| | - Zhen Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Haihe Education Park, 38 Tongyan Road, Tianjin 300353, People's Republic of China
| | - Yi-Long Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Haihe Education Park, 38 Tongyan Road, Tianjin 300353, People's Republic of China
| | - Rui-Rui Zhou
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Haihe Education Park, 38 Tongyan Road, Tianjin 300353, People's Republic of China
| | - Guang-Chuan Wu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Haihe Education Park, 38 Tongyan Road, Tianjin 300353, People's Republic of China
| | - Si-Yao Yin
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Haihe Education Park, 38 Tongyan Road, Tianjin 300353, People's Republic of China
| | - Xu Yan
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Haihe Education Park, 38 Tongyan Road, Tianjin 300353, People's Republic of China
| | - Bin Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University , Haihe Education Park, 38 Tongyan Road, Tianjin 300353, People's Republic of China
| |
Collapse
|
27
|
Chen S, Wang L, Zhang J, Hao Z, Huang H, Deng GJ. Modular Synthesis of Carbazole-Based Conjugated Molecules through a One-Pot Annulation/Dehydrogenation Sequence. J Org Chem 2017; 82:11182-11191. [DOI: 10.1021/acs.joc.7b02305] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Shanping Chen
- Key Laboratory for Green
Organic Synthesis and Application of Hunan Province, Key Laboratory
of Environmentally Friendly Chemistry and Application of Ministry
of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Liren Wang
- Key Laboratory for Green
Organic Synthesis and Application of Hunan Province, Key Laboratory
of Environmentally Friendly Chemistry and Application of Ministry
of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Jing Zhang
- Key Laboratory for Green
Organic Synthesis and Application of Hunan Province, Key Laboratory
of Environmentally Friendly Chemistry and Application of Ministry
of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Zhaoran Hao
- Key Laboratory for Green
Organic Synthesis and Application of Hunan Province, Key Laboratory
of Environmentally Friendly Chemistry and Application of Ministry
of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Huawen Huang
- Key Laboratory for Green
Organic Synthesis and Application of Hunan Province, Key Laboratory
of Environmentally Friendly Chemistry and Application of Ministry
of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- Key Laboratory for Green
Organic Synthesis and Application of Hunan Province, Key Laboratory
of Environmentally Friendly Chemistry and Application of Ministry
of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| |
Collapse
|
28
|
Suárez A, Suárez-Pantiga S, Nieto-Faza O, Sanz R. Gold-Catalyzed Synthesis of 1-(Indol-3-yl)carbazoles: Selective 1,2-Alkyl vs 1,2-Vinyl Migration. Org Lett 2017; 19:5074-5077. [DOI: 10.1021/acs.orglett.7b02303] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anisley Suárez
- Departamento
de Química, Área de Química Orgánica,
Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| | - Samuel Suárez-Pantiga
- Departamento
de Química, Área de Química Orgánica,
Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| | - Olalla Nieto-Faza
- Departamento
de Química Orgánica, Facultade de Ciencias, Universidade de Vigo, Campus As Lagoas, 32004-Ourense, Spain
| | - Roberto Sanz
- Departamento
de Química, Área de Química Orgánica,
Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| |
Collapse
|
29
|
Affiliation(s)
- Marino Petrini
- School of Science and Technology, Chemistry Division Università di Camerino Via S. Agostino, 1. 62032 Camerino Italy
| |
Collapse
|
30
|
Mohan Saini K, Kumar S, Patel M, Saunthwal RK, Verma AK. Trifluoroacetic Acid Mediated One-Pot Synthesis of Furo-Fused Quinoxalines/Pyrazines. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700541] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Sonu Kumar
- Department of Chemistry; University of Delhi; 110007 Delhi India
| | - Monika Patel
- Department of Chemistry; University of Delhi; 110007 Delhi India
| | | | | |
Collapse
|
31
|
Wu J, Chen X, Xie Y, Guo Y, Zhang Q, Deng GJ. Carbazole and Triarylpyrrole Synthesis from Anilines and Cyclohexanones or Acetophenones under Transition-Metal-Free Condition. J Org Chem 2017; 82:5743-5750. [DOI: 10.1021/acs.joc.7b00556] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jun Wu
- Key
Laboratory of Environmentally Friendly Chemistry and Application of
Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, P.R. China
| | - Xiangui Chen
- Key
Laboratory of Environmentally Friendly Chemistry and Application of
Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, P.R. China
| | - Yanjun Xie
- Key
Laboratory of Environmentally Friendly Chemistry and Application of
Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, P.R. China
| | - Yanjun Guo
- Key
Laboratory of Environmentally Friendly Chemistry and Application of
Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, P.R. China
| | - Qian Zhang
- Key
Laboratory of Environmentally Friendly Chemistry and Application of
Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, P.R. China
| | - Guo-Jun Deng
- Key
Laboratory of Environmentally Friendly Chemistry and Application of
Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, P.R. China
| |
Collapse
|
32
|
Regioselective preferential C H activation of sterically hindered 1,3-dienes over [4+2] cycloaddition. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.03.028] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
33
|
Sheykhan M, Shafiee-Pour M, Abbasnia M. C–H Activation under the Guise of Diels–Alder Reaction: Annulation toward the Synthesis of Benzo[e]isoindole-1,3-diones. Org Lett 2017; 19:1270-1273. [DOI: 10.1021/acs.orglett.6b03757] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Mehdi Sheykhan
- Chemistry
Department, University of Guilan, P.O. Box 41335-1914, Rasht, Iran
| | - Maryam Shafiee-Pour
- Chemistry
Department, University of Guilan, P.O. Box 41335-1914, Rasht, Iran
| | - Masoumeh Abbasnia
- School
of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran
| |
Collapse
|
34
|
Kim HS, Goo DY, Woo SK. Efficient synthesis of aryl-substituted carbazoles via tandem double or triple suzuki coupling and cadogan cyclization. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
35
|
Saunthwal RK, Danodia AK, Saini KM, Verma AK. Ag(i)-Catalyzed cycloisomerization reactions: synthesis of substituted phenanthrenes and naphthothiophenes. Org Biomol Chem 2017; 15:6934-6942. [DOI: 10.1039/c7ob01646h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Ag-Catalyzed synthesis of substituted phenanthrenes and naphthothiophenes from ortho-alkylated biaryl derivatives via 6-endo-dig intramolecular alkyne–arene coupling has been described.
Collapse
|
36
|
Chen S, Li Y, Ni P, Huang H, Deng GJ. Indole-to-Carbazole Strategy for the Synthesis of Substituted Carbazoles under Metal-Free Conditions. Org Lett 2016; 18:5384-5387. [DOI: 10.1021/acs.orglett.6b02762] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shanping Chen
- Key Laboratory of Environmentally
Friendly Chemistry and Application of Ministry of Education, College
of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Yuxia Li
- Key Laboratory of Environmentally
Friendly Chemistry and Application of Ministry of Education, College
of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Penghui Ni
- Key Laboratory of Environmentally
Friendly Chemistry and Application of Ministry of Education, College
of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Huawen Huang
- Key Laboratory of Environmentally
Friendly Chemistry and Application of Ministry of Education, College
of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally
Friendly Chemistry and Application of Ministry of Education, College
of Chemistry, Xiangtan University, Xiangtan 411105, China
| |
Collapse
|
37
|
Kumar S, Saunthwal RK, Mujahid M, Aggarwal T, Verma AK. Palladium-Catalyzed Intramolecular Fujiwara-Hydroarylation: Synthesis of Benzo[a]phenazines Derivatives. J Org Chem 2016; 81:9912-9923. [DOI: 10.1021/acs.joc.6b02096] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sonu Kumar
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Rakesh K. Saunthwal
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Mohammad Mujahid
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Trapti Aggarwal
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Akhilesh K. Verma
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| |
Collapse
|
38
|
Lee JY, Ha H, Bae S, Han I, Joo JM. Catalytic C-2 Allylation of Indoles by Electronic Modulation of the Indole Ring and its Application to the Synthesis of Functionalized Carbazoles. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600568] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ju Young Lee
- Department of Chemistry and; Chemistry Institute of Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Hyeri Ha
- Department of Chemistry and; Chemistry Institute of Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Seri Bae
- Department of Chemistry and; Chemistry Institute of Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Inhyuk Han
- Department of Chemistry and; Chemistry Institute of Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Jung Min Joo
- Department of Chemistry and; Chemistry Institute of Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| |
Collapse
|
39
|
Pal S, Choudhary D, Jainth M, Kumar S, Tiwari RK, Verma AK. Regio- and Stereoselective Domino Synthesis of Oxazolo Fused Pyridoindoles and Benzofurooxazolo Pyridines from ortho-Alkynylarylaldehydes. J Org Chem 2016; 81:9356-9371. [DOI: 10.1021/acs.joc.6b02062] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Shilpi Pal
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Deepak Choudhary
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Mohit Jainth
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Sonu Kumar
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Rakesh K. Tiwari
- Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, 9401
Jeronimo Road, Irvine, California 92618, United States
| | - Akhilesh K. Verma
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| |
Collapse
|
40
|
Wu J, Xie Y, Chen X, Deng GJ. Transition Metal-Free Carbazole Synthesis from Arylureas and Cyclohexanones. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600673] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Wu
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; College of Chemistry; Xiangtan University; Xiangtan 411105 People's Republic of China
| | - Yanjun Xie
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; College of Chemistry; Xiangtan University; Xiangtan 411105 People's Republic of China
| | - Xiangui Chen
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; College of Chemistry; Xiangtan University; Xiangtan 411105 People's Republic of China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; College of Chemistry; Xiangtan University; Xiangtan 411105 People's Republic of China
| |
Collapse
|
41
|
Saunthwal RK, Patel M, Verma AK. Regioselective Synthesis of C-3-Functionalized Quinolines via Hetero-Diels–Alder Cycloaddition of Azadienes with Terminal Alkynes. J Org Chem 2016; 81:6563-72. [DOI: 10.1021/acs.joc.6b01186] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Rakesh K. Saunthwal
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Monika Patel
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Akhilesh K. Verma
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| |
Collapse
|
42
|
Saunthwal RK, Patel M, Verma AK. Metal- and Protection-Free [4 + 2] Cycloadditions of Alkynes with Azadienes: Assembly of Functionalized Quinolines. Org Lett 2016; 18:2200-3. [PMID: 27119774 DOI: 10.1021/acs.orglett.6b00817] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A base promoted, protection-free, and regioselective synthesis of highly functionalized quinolines via [4 + 2] cycloaddition of azadienes (generated in situ from o-aminobenzyl alcohol) with internal alkynes has been discovered. The reaction tolerates a wide variety of functional groups which has been successfully extended with diynes, (2-aminopyridin-3-yl)methanol, and 1,4-bis(phenylethynyl)benzene to afford (Z)-phenyl-2-styrylquinolines, phenylnaphthyridine, and alkyne-substituted quinolines, respectively. The proposed mechanism and significant role of the solvent were well supported by isolating the azadiene intermediate and deuterium-labeling studies.
Collapse
Affiliation(s)
| | - Monika Patel
- Department of Chemistry, University of Delhi , Delhi 110007, India
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi , Delhi 110007, India
| |
Collapse
|
43
|
Zhang S, Chen Z, Qin S, Lou C, Senan AM, Liao RZ, Yin G. Non-redox metal ion promoted oxidative coupling of indoles with olefins by the palladium(ii) acetate catalyst through dioxygen activation: experimental results with DFT calculations. Org Biomol Chem 2016; 14:4146-57. [DOI: 10.1039/c6ob00401f] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Non-redox metal ions can sharply improve the Pd(ii)-catalyzed oxidative coupling of indoles with acrylates, leading to one-step synthesis of bis(indolyl)methane derivatives.
Collapse
Affiliation(s)
- Sicheng Zhang
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Zhuqi Chen
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Shuhao Qin
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Chenlin Lou
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Ahmed M. Senan
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Rong-Zhen Liao
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Guochuan Yin
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| |
Collapse
|