1
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Hann JL, Lyall CL, Kociok-Köhn G, Faverio C, Pantoş GD, Lewis SE. Unusual Regio- and Chemoselectivity in Oxidation of Pyrroles and Indoles Enabled by a Thianthrenium Salt Intermediate. Angew Chem Int Ed Engl 2024; 63:e202405057. [PMID: 38830180 DOI: 10.1002/anie.202405057] [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: 03/13/2024] [Revised: 05/31/2024] [Accepted: 06/03/2024] [Indexed: 06/05/2024]
Abstract
A dearomative oxidation of pyrroles to Δ3-pyrrol-2-ones is described, which employs a sulfoxide as oxidant, in conjunction with a carboxylic acid anhydride and a Brønsted acid additive. 3-substituted pyrroles undergo regioselective oxidation to give the product isomer in which oxygen has been introduced at the more hindered position. Regioselectivity is rationalized by a proposed mechanism that proceeds by initial thianthrenium introduction at the less-hindered pyrrole α-position, followed by distal attack of an oxygen nucleophile and subsequent elimination of thianthrene. The same reaction conditions are also able to effect a chemoselective oxidation of indoles to indolin-3-ones and additionally of indolin-3-ones to 2-hydroxyindolin-3-ones. Here again, the regio- and chemoselectivities are rationalized through the intermediacy of a thianthrenium salt.
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Affiliation(s)
- Jodie L Hann
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
| | - Catherine L Lyall
- Research Facilities, University of Bath, Bath, BA2 7AY, United Kingdom
| | | | - Chiara Faverio
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
| | - G Dan Pantoş
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
| | - Simon E Lewis
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
- Institute of Sustainability and Climate Change, University of Bath, Bath, BA2 7AY, United Kingdom
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2
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Aksenov AV, Aksenov DA, Kurenkov IA, Leontiev AV, Aksenov NA. A New, Convenient Way to Fully Substituted α,β-Unsaturated γ-Hydroxy Butyrolactams. Int J Mol Sci 2023; 24:10213. [PMID: 37373361 DOI: 10.3390/ijms241210213] [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: 05/31/2023] [Revised: 06/13/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
The synthesis of novel, highly functionalized 5-hydroxy 3-pyrrolin-2-ones via a two-step procedure involving an addition reaction between KCN and corresponding chalcones, followed by ring condensation of the obtained β-cyano ketones with het(aryl)aldehydes under basic conditions is described. This protocol enables the preparation of various 3,5-di-aryl/heteroaryl-4-benzyl substituted α,β-unsaturated γ-hydroxy butyrolactams, which are subjects of significant interest to synthetic organic and medicinal chemistry.
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Affiliation(s)
- Alexander V Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355009 Stavropol, Russia
| | - Dmitrii A Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355009 Stavropol, Russia
| | - Igor A Kurenkov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355009 Stavropol, Russia
| | - Alexander V Leontiev
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355009 Stavropol, Russia
| | - Nicolai A Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., 355009 Stavropol, Russia
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3
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Dong YQ, Wang K, Zhuo CX. Molybdenum-Catalyzed Intermolecular Deoxygenative Cross-Coupling Reactions of 1,2-Diketones with α-Ketoamides. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuan-Qing Dong
- 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
| | - Kai Wang
- 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
| | - Chun-Xiang Zhuo
- 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
- Shenzhen Research Institute of Xiamen University, Shenzhen 518057, P. R. China
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4
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Nguyen NT, Dai VV, Tri NN, Van Meervelt L, Trung NT, Dehaen W. Experimental and theoretical studies on the synthesis of 1,4,5-trisubstituted pyrrolidine-2,3-diones. Beilstein J Org Chem 2022; 18:1140-1153. [PMID: 36105726 PMCID: PMC9443309 DOI: 10.3762/bjoc.18.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 08/18/2022] [Indexed: 11/23/2022] Open
Abstract
Substituted 4-acetyl-3-hydroxy-3-pyrroline-2-ones have been prepared via three-component reactions and the tautomerism of these 3-pyrroline-2-ones is due to the slight difference of energy, and the significantly large rate constant of transformation between two tautomers. 1,4,5-Trisubstituted pyrrolidine-2,3-dione derivatives were prepared from the above mentioned 2-pyrrolidinone derivatives and aliphatic amines, which exist in enamine form and are stabilized by an intramolecular hydrogen bond. A possible reaction mechanism between 3-pyrroline-2-one and aliphatic amine (CH3NH2) was proposed based on computational results and the main product is formed favorably following the PES via the lowest ΔG# pathway in both the gas-phase and an ethanol solvent model. DFT calculations showed that kinetic selectivity is more significant than thermodynamic selectivity for forming main products.
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Affiliation(s)
- Nguyen Tran Nguyen
- Department of Chemistry, University of Science and Education, the University of Da Nang, Ton Duc Thang 459, 550000 Da Nang, Viet Nam
| | - Vo Viet Dai
- Department of Chemistry, University of Science and Education, the University of Da Nang, Ton Duc Thang 459, 550000 Da Nang, Viet Nam
| | - Nguyen Ngoc Tri
- Laboratory of Computational Chemistry and Modelling, Faculty of Natural Sciences, Quy Nhon University, An Duong Vuong 170, 820000 Quy Nhon, Viet Nam
| | - Luc Van Meervelt
- Biomolecular Architecture, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Nguyen Tien Trung
- Laboratory of Computational Chemistry and Modelling, Faculty of Natural Sciences, Quy Nhon University, An Duong Vuong 170, 820000 Quy Nhon, Viet Nam
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
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5
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Shang Y, Wang J, Ying J, Wu X. Palladium‐Catalyzed Carbonylative Synthesis of 1‐Acyl‐1,5‐dihydro‐2
H
‐pyrrol‐2‐ones from Propargyl Amines and Acid Chlorides. ChemistrySelect 2021. [DOI: 10.1002/slct.202103481] [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]
Affiliation(s)
- Yan Shang
- Department of Chemistry Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci-Tech University Hangzhou 310018
| | - Jian‐Shu Wang
- Department of Chemistry Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci-Tech University Hangzhou 310018
| | - Jun Ying
- Department of Chemistry Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci-Tech University Hangzhou 310018
| | - Xiao‐Feng Wu
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences 116023 Dalian Liaoning
- Leibniz-Institut für Katalyse e. V. Albert-Einstein-Straβe 29a 18059 Rostock
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6
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Ye ZP, Hu YZ, Guan JP, Chen K, Liu F, Gao J, Xiao JA, Xiang HY, Chen XQ, Yang H. Photocatalytic Cyclization/Defluorination Domino Sequence to Access 3-Fluoro-1,5-dihydro-2 H-pyrrol-2-one Scaffold. Org Lett 2021; 23:4754-4758. [PMID: 34061549 DOI: 10.1021/acs.orglett.1c01477] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We herein report an unprecedented photoinduced cyclization/defluorination domino process of N-allylbromodifluoroacetamide with cyclic secondary amines. Consequently, a wide array of valuable 3-fluoro-1,5-dihydro-2H-pyrrol-2-ones were facilely prepared from readily available starting materials under mild conditions. Preliminary mechanistic investigations suggest that a radical chain propagation and amine-promoted defluorination pathway are presumably involved in this transformation.
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Affiliation(s)
- Zhi-Peng Ye
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yuan-Zhuo Hu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jian-Ping Guan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Fang Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jie Gao
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jun-An Xiao
- College of Chemistry and Materials Science, Nanning Normal University, Nanning 530001, Guangxi, P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Xiao-Qing Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
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7
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Le Z, Zhu Y, Bao Z, Ying J, Wu X. Palladium‐Catalyzed Carbonylative Synthesis of 1,5‐Dihydro‐2
H
‐pyrrol‐2‐ones from Propargyl Amines and Benzyl Chlorides. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhengjie Le
- Department of Chemistry Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci-Tech University Hangzhou 310018
| | - Yiwen Zhu
- Department of Chemistry Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci-Tech University Hangzhou 310018
| | - Zhi‐Peng Bao
- Department of Chemistry Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci-Tech University Hangzhou 310018
| | - Jun Ying
- Department of Chemistry Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci-Tech University Hangzhou 310018
| | - Xiao‐Feng Wu
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences 116023 Dalian Liaoning People's Republic of China
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock Albert-Einstein-Straβe 29a 18059 Rostock Germany
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8
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del Corte X, López-Francés A, Maestro A, Martinez de Marigorta E, Palacios F, Vicario J. Brönsted Acid Catalyzed Multicomponent Synthesis of Phosphorus and Fluorine-Derived γ-Lactam Derivatives. J Org Chem 2020; 85:14369-14383. [DOI: 10.1021/acs.joc.0c00280] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Xabier del Corte
- Departamento de Química Orgánica I, Centro de Investigación y Estudios Avanzados “Lucio Lascaray”- Facultad de Farmacia, University of the Basque Country, UPV/EHU, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Adrián López-Francés
- Departamento de Química Orgánica I, Centro de Investigación y Estudios Avanzados “Lucio Lascaray”- Facultad de Farmacia, University of the Basque Country, UPV/EHU, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Aitor Maestro
- Departamento de Química Orgánica I, Centro de Investigación y Estudios Avanzados “Lucio Lascaray”- Facultad de Farmacia, University of the Basque Country, UPV/EHU, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Edorta Martinez de Marigorta
- Departamento de Química Orgánica I, Centro de Investigación y Estudios Avanzados “Lucio Lascaray”- Facultad de Farmacia, University of the Basque Country, UPV/EHU, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Francisco Palacios
- Departamento de Química Orgánica I, Centro de Investigación y Estudios Avanzados “Lucio Lascaray”- Facultad de Farmacia, University of the Basque Country, UPV/EHU, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Javier Vicario
- Departamento de Química Orgánica I, Centro de Investigación y Estudios Avanzados “Lucio Lascaray”- Facultad de Farmacia, University of the Basque Country, UPV/EHU, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
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9
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Wang S, Liu Y, Cramer N. Asymmetric Alkenyl C−H Functionalization by Cp
x
Rh
III
forms 2
H
‐Pyrrol‐2‐ones through [4+1]‐Annulation of Acryl Amides and Allenes. Angew Chem Int Ed Engl 2019; 58:18136-18140. [DOI: 10.1002/anie.201909971] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/20/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Shou‐Guo Wang
- Laboratory of Asymmetric Catalysis and SynthesisEPFL SB ISIC LCSA, BCH 4305 CH-1015 Lausanne Switzerland
| | - Yang Liu
- Laboratory of Asymmetric Catalysis and SynthesisEPFL SB ISIC LCSA, BCH 4305 CH-1015 Lausanne Switzerland
- Dipartimento di ChimicaUniversità di Bologna via Selmi 2 40126 Bologna Italy
| | - Nicolai Cramer
- Laboratory of Asymmetric Catalysis and SynthesisEPFL SB ISIC LCSA, BCH 4305 CH-1015 Lausanne Switzerland
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10
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Wang S, Liu Y, Cramer N. Asymmetric Alkenyl C−H Functionalization by Cp
x
Rh
III
forms 2
H
‐Pyrrol‐2‐ones through [4+1]‐Annulation of Acryl Amides and Allenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909971] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Shou‐Guo Wang
- Laboratory of Asymmetric Catalysis and SynthesisEPFL SB ISIC LCSA, BCH 4305 CH-1015 Lausanne Switzerland
| | - Yang Liu
- Laboratory of Asymmetric Catalysis and SynthesisEPFL SB ISIC LCSA, BCH 4305 CH-1015 Lausanne Switzerland
- Dipartimento di ChimicaUniversità di Bologna via Selmi 2 40126 Bologna Italy
| | - Nicolai Cramer
- Laboratory of Asymmetric Catalysis and SynthesisEPFL SB ISIC LCSA, BCH 4305 CH-1015 Lausanne Switzerland
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11
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Lei WL, Feng KW, Wang T, Wu LZ, Liu Q. Eosin Y- and Copper-Catalyzed Dark Reaction To Construct Ene-γ-Lactams. Org Lett 2018; 20:7220-7224. [DOI: 10.1021/acs.orglett.8b03147] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Wen-Long Lei
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Kai-Wen Feng
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Tao Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Qiang Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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12
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Samper Barceló V, Bienz S. Synthesis of Highly Substituted 3-Pyrrolin-2-ones from N,N-Disubstituted α-Amino Acids. J Org Chem 2018; 83:2734-2743. [PMID: 29402083 DOI: 10.1021/acs.joc.7b03187] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Highly functionalized 5-membered N-heterocyclic compounds, 4-aryl-3-chloro-5-methoxy-1-methyl-3-pyrrolin-2-ones, have been synthesized in moderate to high yields by the reaction of N,N-dimethylated aromatic α-amino acids with oxalyl chloride, followed by solvolysis with MeOH. The products possess a number of functional groups such as an amide, a mixed amido/alkoxy acetal, a vinyl halide, and an alkene and thus are promising candidates to be used as starting materials for the synthesis of diverse five-membered N-heterocyclic compounds.
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Affiliation(s)
- Víctor Samper Barceló
- Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Stefan Bienz
- Department of Chemistry, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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13
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Kalaitzakis D, Sofiadis M, Triantafyllakis M, Daskalakis K, Vassilikogiannakis G. Asymmetric and Site-Selective [3 + 2]-Annulations for the Synthesis of High-Value Bicyclic Lactams. Org Lett 2018; 20:1146-1149. [PMID: 29417818 PMCID: PMC5822218 DOI: 10.1021/acs.orglett.8b00076] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
![]()
Asymmetric
and site-selective formal [3 + 2]-annulations of γ-alkyl-β,γ-unsaturated
γ-lactams with α,β-unsaturated aldehydes have been
developed. These organocatalysed transformations yield high value
enantioenriched bicyclic γ-lactams with up to four new stereocenters
(sometimes including a quarternary carbon). The overall transformation
starts from simple and readily accessible furans and oversees a rapid,
controlled, and dramatic enhancement in 3D complexity.
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Affiliation(s)
- Dimitris Kalaitzakis
- Department of Chemistry, University of Crete , Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Manolis Sofiadis
- Department of Chemistry, University of Crete , Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Myron Triantafyllakis
- Department of Chemistry, University of Crete , Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Konstantinos Daskalakis
- Department of Chemistry, University of Crete , Vasilika Vouton, 71003 Iraklion, Crete, Greece
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14
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Shiri M, Ranjbar M, Yasaei Z, Zamanian F, Notash B. Palladium-catalyzed tandem reaction of 2-chloroquinoline-3-carbaldehydes and isocyanides. Org Biomol Chem 2018; 15:10073-10081. [PMID: 29168530 DOI: 10.1039/c7ob02043k] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A facile domino reaction of 2-chloroquinoline-3-carbaldehydes in one and two equivalents of isocyanide has been investigated. Three-component reactions of 2-chloroquinoline-3-carbaldehydes, isocyanides and amines are also described. In this Pd-catalyzed reaction under controlled conditions, three novel types of quinoline derivatives were formed via amidation, lactamization or carbamate formation along with the formation of C-C, C-N, and C-O bonds in a one-pot procedure.
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Affiliation(s)
- Morteza Shiri
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran.
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15
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del Corte X, Maestro A, Vicario J, Martinez de Marigorta E, Palacios F. Brönsted-Acid-Catalyzed Asymmetric Three-Component Reaction of Amines, Aldehydes, and Pyruvate Derivatives. Enantioselective Synthesis of Highly Functionalized γ-Lactam Derivatives. Org Lett 2017; 20:317-320. [DOI: 10.1021/acs.orglett.7b03397] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xabier del Corte
- Departamento de Química Orgánica
I, Facultad de Farmacia, University of the Basque Country, UPV/EHU
Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Aitor Maestro
- Departamento de Química Orgánica
I, Facultad de Farmacia, University of the Basque Country, UPV/EHU
Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Javier Vicario
- Departamento de Química Orgánica
I, Facultad de Farmacia, University of the Basque Country, UPV/EHU
Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Edorta Martinez de Marigorta
- Departamento de Química Orgánica
I, Facultad de Farmacia, University of the Basque Country, UPV/EHU
Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Francisco Palacios
- Departamento de Química Orgánica
I, Facultad de Farmacia, University of the Basque Country, UPV/EHU
Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
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16
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Howard JK, Rihak KJ, Hyland CJT, Bissember AC, Smith JA. Visible light dye-photosensitised oxidation of pyrroles using a simple LED photoreactor. Org Biomol Chem 2016; 14:8873-8880. [PMID: 27722413 DOI: 10.1039/c6ob01719c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photooxidation of pyrrole is typically low yielding due to the absorbance of ultraviolet light, which leads to uncontrolled polymerisation and decomposition. Presented herein is the development of a simple and cost-effective photoreactor utilising Light Emitting Diodes (LEDs) as the light source, and its application to the dye-sensitised oxidation of a range of pyrroles to give corresponding 3-pyrrolin-2-ones. The broader applicability of this approach to the generation of 1O2 is also explored.
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Affiliation(s)
- James K Howard
- School of Physical Sciences - Chemistry, University of Tasmania, Australia.
| | - Kieran J Rihak
- School of Physical Sciences - Chemistry, University of Tasmania, Australia.
| | | | - Alex C Bissember
- School of Physical Sciences - Chemistry, University of Tasmania, Australia.
| | - Jason A Smith
- School of Physical Sciences - Chemistry, University of Tasmania, Australia.
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17
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Truax NJ, Banales Mejia F, Kwansare DO, Lafferty MM, Kean MH, Pelkey ET. Synthesis of Benzo[a]carbazoles and an Indolo[2,3-a]carbazole from 3-Aryltetramic Acids. J Org Chem 2016; 81:6808-15. [DOI: 10.1021/acs.joc.6b01072] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Nathanyal J. Truax
- Department of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Fernando Banales Mejia
- Department of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Deborah O. Kwansare
- Department of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Megan M. Lafferty
- Department of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Maeve H. Kean
- Department of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Erin T. Pelkey
- Department of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
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18
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Howard JK, Rihak KJ, Bissember AC, Smith JA. The Oxidation of Pyrrole. Chem Asian J 2015; 11:155-67. [DOI: 10.1002/asia.201500659] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Indexed: 01/16/2023]
Affiliation(s)
- James K. Howard
- School of Chemistry; University of Leeds; Woodhouse Lane Leeds LS2 9JT UK
| | - Kieran J. Rihak
- School of Physical Sciences-Chemistry; University of Tasmania, Hobart; Tasmania 7001 Australia
| | - Alex C. Bissember
- School of Physical Sciences-Chemistry; University of Tasmania, Hobart; Tasmania 7001 Australia
| | - Jason A. Smith
- School of Physical Sciences-Chemistry; University of Tasmania, Hobart; Tasmania 7001 Australia
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