1
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Gómez-Gil S, Solas M, Suárez-Pantiga S, Sanz R. Brønsted Acid-Catalyzed Synthesis of 4-Functionalized Tetrahydrocarbazol-1-ones from 1,4-Dicarbonylindole Derivatives. J Org Chem 2024; 89:505-520. [PMID: 38085096 PMCID: PMC10777410 DOI: 10.1021/acs.joc.3c02248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/14/2023] [Accepted: 11/22/2023] [Indexed: 01/06/2024]
Abstract
A p-toluenesulfonic acid-catalyzed cascade reaction is reported for the synthesis of 4-functionalized tetrahydrocarbazolones via the reaction of 4-(indol-2-yl)-4-oxobutanal derivatives with a variety of nucleophiles in acetonitrile or hexafluoroisopropanol. After the initial intramolecular Friedel-Crafts hydroxyalkylation, the 3-indolylmethanol intermediate is subsequently activated and reacted with the external nucleophile. The reaction conditions are crucial to avoid alternative reaction pathways, allowing direct substitution reaction with thiols, (hetero)arenes, alkenes, or sulfinates. The procedure features high overall yields to access a diverse family of compounds bearing the tetrahydrocarbazole core.
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Affiliation(s)
- Sara Gómez-Gil
- Área de Química
Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| | - Marta Solas
- Área de Química
Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| | - Samuel Suárez-Pantiga
- Área de Química
Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| | - Roberto Sanz
- Área de Química
Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
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2
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Lv X, Gao P, Zhao X, Jiang Z. Metal-Free Construction of Multisubstituted Indolizines via Intramolecular Amination of Allylic Alcohols. J Org Chem 2023. [PMID: 37229619 DOI: 10.1021/acs.joc.3c00469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
An intramolecular amination of allylic alcohols is developed as an efficient and general access to biologically important multisubstituted indolizines and their variants. Two metal-free synthetic platforms including using aqueous hydrochloric acid solution as the solvent and p-toluenesulfonic acid as the catalyst have been established, enabling the divergent synthesis of these valuable compounds in high yields.
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Affiliation(s)
- Xinxin Lv
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, College of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453000, People's Republic of China
| | - Penghui Gao
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, College of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453000, People's Republic of China
| | - Xiaowei Zhao
- International Scientific and Technological Cooperation Base of Chiral Chemistry, Henan University, Kaifeng, Henan 475004, People's Republic of China
| | - Zhiyong Jiang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, College of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453000, People's Republic of China
- International Scientific and Technological Cooperation Base of Chiral Chemistry, Henan University, Kaifeng, Henan 475004, People's Republic of China
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3
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Cheng X, Wang L, Liu Y, Wan X, Xiang Z, Li R, Wan X. Molecular Iodine‐Catalysed Reductive Alkylation of Indoles: Late‐Stage Diversification for Bioactive Molecules. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xionglve Cheng
- Soochow University College of Chemistry, Chemical Engineering and Materials Science 215123 Suzhou CHINA
| | - Lili Wang
- Soochow University College of Chemistry, Chemical Engineering and Materials Science 215123 Suzhou CHINA
| | - Yide Liu
- Soochow University College of Chemistry, Chemical Engineering and Materials Science 215123 Suzhou CHINA
| | - Xiao Wan
- Soochow University College of Chemistry, Chemical Engineering and Materials Science 215123 Suzhou CHINA
| | - Zixin Xiang
- Soochow University College of Chemistry, Chemical Engineering and Materials Science 215123 Suzhou CHINA
| | - Ruyi Li
- Soochow University College of Chemistry, Chemical Engineering and Materials Science 215123 Suzhou CHINA
| | - Xiaobing Wan
- Soochow University College of Chemistry, Chemical Engineering and Materials Science Renai road 215123 Suzhou CHINA
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4
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Debnath S, Lu M, Liang L, Shi Y. A Tandem Nucleophilic Aminopalladation and Carbene Insertion Sequence for Indole Fused Polycycles. Org Lett 2021; 23:7118-7122. [PMID: 34491766 DOI: 10.1021/acs.orglett.1c02512] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient tandem nucleophilic aminopalladation and carbene insertion sequence is described for the synthesis of indole fused polycycles. The reaction process provides a variety of substituted indeno[1,2-b]indoles in up to 99% yields.
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Affiliation(s)
- Sudarshan Debnath
- Institute of Natural and Synthetic Organic Chemistry, Changzhou University, Changzhou 213164, China
| | - Mei Lu
- Institute of Natural and Synthetic Organic Chemistry, Changzhou University, Changzhou 213164, China
| | - Lingli Liang
- Institute of Natural and Synthetic Organic Chemistry, Changzhou University, Changzhou 213164, China
| | - Yian Shi
- Institute of Natural and Synthetic Organic Chemistry, Changzhou University, Changzhou 213164, China.,Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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5
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Han TJ, Wang MC, Mei GJ. 2-Indolymethanols as 4-atom-synthons in oxa-Michael reaction cascade: access to tetracyclic indoles. Chem Commun (Camb) 2021; 57:8921-8924. [PMID: 34387291 DOI: 10.1039/d1cc03653j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The first Brønsted acid-catalyzed oxa-Michael reaction cascade of 2-indolylmethanols with trione alkenes was accomplished. By using this practical approach, a variety of tetracyclic indoles were readily created in an ordered sequence with excellent regio- and diastereoselectivity. 2-Indolylmethanols commendably served as four-atom synthons, as opposed to the common three-atom synthons in the previous literature reports. The regioselectivity issue was well handled by the employment of a strong Brønsted acid catalyst. In addition, its dual role in activation of substrates via hydrogen-bonding interaction and acceleration of subsequent intramolecular cyclization and dehydration was proposed to account for the high reaction efficiency.
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Affiliation(s)
- Tian-Jiao Han
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Min-Can Wang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Guang-Jian Mei
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
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6
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Kasakado T, Hyodo M, Furuta A, Kamardine A, Ryu I, Fukuyama T. Flow
Friedel–Crafts
alkylation of
1‐adamantanol
with arenes using
HO‐SAS
as an immobilized acid catalyst. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.202000518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Takayoshi Kasakado
- Organization for Research Promotion Osaka Prefecture University Sakai Japan
| | - Mamoru Hyodo
- Organization for Research Promotion Osaka Prefecture University Sakai Japan
| | - Akihiro Furuta
- Department of Chemistry Graduate School of Science, Osaka Prefecture University Sakai Japan
| | - Aina Kamardine
- Department of Chemistry Graduate School of Science, Osaka Prefecture University Sakai Japan
| | - Ilhyong Ryu
- Organization for Research Promotion Osaka Prefecture University Sakai Japan
- Department of Applied Chemistry National Chiao Tung University Hsinchu Taiwan
| | - Takahide Fukuyama
- Department of Chemistry Graduate School of Science, Osaka Prefecture University Sakai Japan
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7
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Cabrera-Lobera N, Velasco N, Sanz R, Fernández-Rodríguez MA. Brønsted acid−catalyzed synthesis of tetrasubstituted allenes and polysubstituted 2H-chromenes from tertiary propargylic alcohols. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.05.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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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]
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9
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Zhou C, Hu C, Hong G, He Y, Tang Z, Wang L. A Sc(OTf)3 catalyzed dehydrogenative reaction of electron-rich (hetero)aryl nucleophiles with 9-aryl-fluoren-9-ols. Org Biomol Chem 2019; 17:9615-9619. [DOI: 10.1039/c9ob02138h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New pyrenyl substituted 9,9-diarylfluorene with nonplanar conformations, high fluorescence quantum yield and excellent thermal and morphological stability was synthesized by our current protocol.
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Affiliation(s)
- Chen Zhou
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Chen Hu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Gang Hong
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Yuchen He
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Zhicong Tang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Limin Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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10
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Li PG, Yang Y, Zhu S, Li HX, Zou LH. Pd-Catalyzed Regioselective Direct Double C-H Arylation of 6,7-Benzindoles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801473] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Ping-Gui Li
- State Key Laboratory of Coordination Chemistry and Chemical Engineering; Nanjing University; Xianlin Avenue 163 210093 Nanjing P. R. China
- School of Pharmaceutical Sciences; Jiangnan University; Lihu Avenue 1800 214122 Wuxi P.R. China
| | - Youqing Yang
- State Key Laboratory of Coordination Chemistry and Chemical Engineering; Nanjing University; Xianlin Avenue 163 210093 Nanjing P. R. China
| | - Shuai Zhu
- School of Pharmaceutical Sciences; Jiangnan University; Lihu Avenue 1800 214122 Wuxi P.R. China
| | - Hong-Xi Li
- School of Pharmaceutical Sciences; Jiangnan University; Lihu Avenue 1800 214122 Wuxi P.R. China
| | - Liang-Hua Zou
- School of Pharmaceutical Sciences; Jiangnan University; Lihu Avenue 1800 214122 Wuxi P.R. China
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11
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Gour J, Gatadi S, Nagarsenkar A, Babu BN, Madhavi YV, Nanduri S. Synthesis of Indolo[1,2-b
]isoquinoline Derivatives by Lewis Acid-Catalyzed Intramolecular Friedel-Crafts Alkylation Reaction. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800162] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jitendra Gour
- National Institute of Pharmaceutical Education and Research (NIPER); 500 037 Hyderabad India
| | - Srikanth Gatadi
- National Institute of Pharmaceutical Education and Research (NIPER); 500 037 Hyderabad India
| | - Atulya Nagarsenkar
- National Institute of Pharmaceutical Education and Research (NIPER); 500 037 Hyderabad India
| | - Bathini Nagendra Babu
- National Institute of Pharmaceutical Education and Research (NIPER); 500 037 Hyderabad India
| | - Y. V. Madhavi
- National Institute of Pharmaceutical Education and Research (NIPER); 500 037 Hyderabad India
| | - Srinivas Nanduri
- National Institute of Pharmaceutical Education and Research (NIPER); 500 037 Hyderabad India
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12
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Schlegel M, Schneider C. Rapid Construction of Complex 2-Pyrrolines through Lewis Acid-Catalyzed, Sequential Three-Component Reactions via in Situ-Generated 1-Azaallyl Cations. Org Lett 2018; 20:3119-3123. [DOI: 10.1021/acs.orglett.8b01205] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Marcel Schlegel
- Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Christoph Schneider
- Institut für Organische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
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13
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Kavala V, Yang Z, Konala A, Yang TH, Kuo CW, Ruan JY, Yao CF. Synthesis of 1,2,3-Fused Indole Polyheterocycles by Copper-Catalyzed Cascade Reaction. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701618] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Veerababurao Kavala
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road 116 R.O.C. Taipei Taiwan
| | - Zonghan Yang
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road 116 R.O.C. Taipei Taiwan
| | - Ashok Konala
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road 116 R.O.C. Taipei Taiwan
| | - Tang-Hao Yang
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road 116 R.O.C. Taipei Taiwan
| | - Chun-Wei Kuo
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road 116 R.O.C. Taipei Taiwan
| | - Jian-Yao Ruan
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road 116 R.O.C. Taipei Taiwan
| | - Ching-Fa Yao
- Department of Chemistry; National Taiwan Normal University; 88, Sec. 4, Tingchow Road 116 R.O.C. Taipei Taiwan
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14
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Suárez A, Martínez F, Sanz R. Synthesis of α-functionalized α-indol-3-yl carbonyls through direct S N reactions of indol-3-yl α-acyloins. Org Biomol Chem 2018; 14:11212-11219. [PMID: 27841890 DOI: 10.1039/c6ob02125e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A new and efficient synthesis of α-functionalized α-indol-3-yl ketones from easily available indolyl α-acyloins is reported. This process, catalyzed by Brønsted or Lewis acids, involves an uncommon direct nucleophilic substitution reaction of a secondary α-carbonyl-substituted hydroxyl group. The described methodology allows the introduction of a variety of nucleophiles such as (hetero)arenes, thiophenols, nitroanilines and 1,3-dicarbonyl derivatives. The synthesized α-indol-3-yl carbonyl compounds are important synthetic targets also useful for accessing functionalized tryptophols and furan-3-yl indoles.
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Affiliation(s)
- Anisley Suárez
- Área de Química Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos. Pza. Misael Bañuelos, s/n. 09001-Burgos, Spain.
| | - Fernando Martínez
- Área de Química Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos. Pza. Misael Bañuelos, s/n. 09001-Burgos, Spain.
| | - Roberto Sanz
- Área de Química Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos. Pza. Misael Bañuelos, s/n. 09001-Burgos, Spain.
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15
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Schlegel M, Schneider C. Lewis acid-catalyzed Friedel–Crafts reactions toward highly versatile, α-quaternary oxime ethers. Chem Commun (Camb) 2018; 54:11124-11127. [DOI: 10.1039/c8cc06823b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Tertiary 2-hydroxy oxime ethers are converted into α-functionalized, all-carbon-substituted products under Lewis acid catalysis in a SN1-reaction.
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Affiliation(s)
- Marcel Schlegel
- Institut für Organische Chemie
- Universität Leipzig
- D-04103 Leipzig
- Germany
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16
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Reddy CR, Yarlagadda S, Sridhar B, Reddy BVS. Arylative Cyclization of Indole-1-carboxamides with 1,6-Enynes for the Synthesis of Polycyclic Indole Scaffolds. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701029] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Chatrala Ravikumar Reddy
- Centre for Semiochemicals; CSIR - Indian Institute of Chemical Technology; 500007 Hyderabad India
| | - Suresh Yarlagadda
- Centre for Semiochemicals; CSIR - Indian Institute of Chemical Technology; 500007 Hyderabad India
| | - Balasubramanian Sridhar
- Laboratory of X-ray Crystallography; CSIR - Indian Institute of Chemical Technology; 500007 Hyderabad India
| | - Basi V. Subba Reddy
- Centre for Semiochemicals; CSIR - Indian Institute of Chemical Technology; 500007 Hyderabad India
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17
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Lu Q, Greßies S, Klauck FJR, Glorius F. Manganese(I)-Catalyzed Regioselective C−H Allenylation: Direct Access to 2-Allenylindoles. Angew Chem Int Ed Engl 2017; 56:6660-6664. [DOI: 10.1002/anie.201701767] [Citation(s) in RCA: 133] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 03/23/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Qingquan Lu
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
| | - Steffen Greßies
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
| | - Felix J. R. Klauck
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
| | - Frank Glorius
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
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18
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Lu Q, Greßies S, Klauck FJR, Glorius F. Mangan(I)-katalysierte regioselektive C-H-Allenierung: direkte Synthese von 2-Allenylindolen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701767] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Qingquan Lu
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
| | - Steffen Greßies
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
| | - Felix J. R. Klauck
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
| | - Frank Glorius
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
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19
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Zou Y, Chen C, Chen X, Zhang X, Rao W. Silica Gel Mediated Friedel–Crafts Alkylation of 3‐Indolylmethanols with Indoles: Synthesis of Unsymmetrical Bis(3‐indolyl)methanes. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700088] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yongzhen Zou
- Jiangsu Key Lab of Biomass‐Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University 210037 Nanjing P. R. China
| | - Cuili Chen
- Jiangsu Key Lab of Biomass‐Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University 210037 Nanjing P. R. China
| | - Xianxiao Chen
- Jiangsu Key Lab of Biomass‐Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University 210037 Nanjing P. R. China
| | - Xiaoxiang Zhang
- Jiangsu Key Lab of Biomass‐Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University 210037 Nanjing P. R. China
| | - Weidong Rao
- Jiangsu Key Lab of Biomass‐Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University 210037 Nanjing P. R. China
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20
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Shibata T, Baba T, Takano H, Kanyiva KS. Intramolecular C−H Alkenylation of N
-Alkynylindoles: Exo
and Endo
Selective Cyclization According to the Choice of Metal Catalyst. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700107] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Takanori Shibata
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku Tokyo 169-8555 Japan
- JST; ACT-C; 4-1-8 Honcho, Kawaguchi Saitama 332-0012 Japan
| | - Takumi Baba
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku Tokyo 169-8555 Japan
| | - Hideaki Takano
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku Tokyo 169-8555 Japan
| | - Kyalo Stephen Kanyiva
- International Center for Science and Engineering Program (ICSEP); Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
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21
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Jha M, Dhiman S, Cameron TS, Kumar D, Kumar A. Au-Catalyzed Synthesis of Thiopyrano[2,3-b]indoles Featuring Tandem Rearrangement and Hydroarylation. Org Lett 2017; 19:2038-2041. [PMID: 28378595 DOI: 10.1021/acs.orglett.7b00617] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Gold(III)-catalyzed synthesis of 14-π electron heteroaromatic thiopyrano[2,3-b]indole is reported using conjugated enyne tethered indole sulfides, featuring skeletal rearrangement conjoined with intramolecular hydroarylation (via C3-H functionalization of the indole core) and oxidative aromatization. Subsequent Pd-catalyzed C-C coupling resulted in a 16-π electron heteroaromatic isothiochromeno[1,8,7-bcd]indole.
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Affiliation(s)
- Mukund Jha
- Department of Biology and Chemistry, Nipissing University , North Bay, ON P1B 8L7, Canada
| | - Shiv Dhiman
- Department of Biology and Chemistry, Nipissing University , North Bay, ON P1B 8L7, Canada.,Department of Chemistry, Birla Institute of Technology and Science , Pilani, Pilani 333031, India
| | - T Stanley Cameron
- Department of Chemistry, Dalhousie University , Halifax, NS B3H 4J3, Canada
| | - Dalip Kumar
- Department of Chemistry, Birla Institute of Technology and Science , Pilani, Pilani 333031, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science , Pilani, Pilani 333031, India
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22
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Suárez A, Martínez F, Suárez-Pantiga S, Sanz R. PTSA-Catalyzed Reaction of Indoles with 2-Oxoaldehydes: Synthesis of α,α-Bis(indol-3-yl) Ketones. ChemistrySelect 2017. [DOI: 10.1002/slct.201700013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anisley Suárez
- Área de Química Orgánica; Departamento de Química; Facultad de Ciencias; Universidad de Burgos; Pza. Misael Bañuelos s/n 09001- Burgos Spain
| | - Fernando Martínez
- Área de Química Orgánica; Departamento de Química; Facultad de Ciencias; Universidad de Burgos; Pza. Misael Bañuelos s/n 09001- Burgos Spain
| | - Samuel Suárez-Pantiga
- Área de Química Orgánica; Departamento de Química; Facultad de Ciencias; Universidad de Burgos; Pza. Misael Bañuelos s/n 09001- Burgos Spain
| | - Roberto Sanz
- Área de Química Orgánica; Departamento de Química; Facultad de Ciencias; Universidad de Burgos; Pza. Misael Bañuelos s/n 09001- Burgos Spain
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23
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Wang J, Zhu HT, Chen S, Xia Y, Jin DP, Qiu YF, Li YX, Liang YM. Electrophilic Cyclization of Aryl Propargylic Alcohols: Synthesis of Dihalogenated 6,9-Dihydropyrido[1,2-a]indoles via a Cascade Iodocyclization. J Org Chem 2016; 81:10975-10986. [DOI: 10.1021/acs.joc.6b02013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jia Wang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Hai-Tao Zhu
- Shannxi
Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences, Baoji 721013, People’s Republic of China
| | - Si Chen
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yu Xia
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Dong-Po Jin
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yi-Feng Qiu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Ying-Xiu Li
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Yong-Min Liang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
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24
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Du Y, Liu Y. Copper-Catalysed Selective 3-Sulfonylation of Indoles: A Mild Synthesis of Indolyl Sulfones. JOURNAL OF CHEMICAL RESEARCH 2016. [DOI: 10.3184/174751916x14733526548948] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The selective C3-sulfonylation of some 4-, 5- and 6-substituted indoles using sodium arenesulfinates as reaction partners has been realised under mild conditions using catalytic CuI/1,10-phenanthroline at 70 °C. The reaction had a satisfactory application scope and proceeded in fair to excellent yields.
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Affiliation(s)
- Yi Du
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
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25
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Velasco R, Silva López C, Nieto Faza O, Sanz R. Exploring the Reactivity of α-Lithiated Aryl Benzyl Ethers: Inhibition of the [1,2]-Wittig Rearrangement and the Mechanistic Proposal Revisited. Chemistry 2016; 22:15058-15068. [DOI: 10.1002/chem.201602254] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 07/11/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Rocío Velasco
- Área de Química Orgánica, Departamento de Química; Facultad de Ciencias; Universidad de Burgos; Pza. Misael Bañuelos s/n 09001 Burgos Spain
| | - Carlos Silva López
- Departamento de Química Orgánica; Universidade de Vigo; Campus As Lagoas 32004- Ourense Galicia Spain
| | - Olalla Nieto Faza
- Departamento de Química Orgánica; Universidade de Vigo; Campus As Lagoas 32004- Ourense Galicia Spain
| | - Roberto Sanz
- Área de Química Orgánica, Departamento de Química; Facultad de Ciencias; Universidad de Burgos; Pza. Misael Bañuelos s/n 09001 Burgos Spain
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26
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Xiong B, Zhang S, Jiang H, Zhang M. Hydrogen-Transfer-Mediated Direct β-Alkylation of Aryl-1,8-naphthyridines with Alcohols under Transition Metal Catalyst Free Conditions. Org Lett 2016; 18:724-7. [DOI: 10.1021/acs.orglett.5b03699] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Biao Xiong
- School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People’s Republic of China
| | - Shudi Zhang
- School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People’s Republic of China
| | - Huanfeng Jiang
- School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People’s Republic of China
| | - Min Zhang
- School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People’s Republic of China
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27
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Dawande SG, Lad BS, Prajapati S, Katukojvala S. Rhodium-catalyzed pyridannulation of indoles with diazoenals: a direct approach to pyrido[1,2-a]indoles. Org Biomol Chem 2016; 14:5569-73. [DOI: 10.1039/c6ob00360e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A new rhodium-catalyzed [4 + 2]-pyridannulation of 3-substituted indoles with diazoenals resulted in the biologically important pyrido[1,2-a]indoles.
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Affiliation(s)
- Sudam Ganpat Dawande
- Department of Chemistry
- Indian Institute of Science Education & Research
- Bhopal
- India
| | - Bapurao Sudam Lad
- Department of Chemistry
- Indian Institute of Science Education & Research
- Bhopal
- India
| | - Sunitkumar Prajapati
- Department of Chemistry
- Indian Institute of Science Education & Research
- Bhopal
- India
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