1
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Synthesis and Evaluation of the Tetracyclic Ring-System of Isocryptolepine and Regioiso-Mers for Antimalarial, Antiproliferative and Antimicrobial Activities. Molecules 2021; 26:molecules26113268. [PMID: 34070798 PMCID: PMC8198049 DOI: 10.3390/molecules26113268] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/18/2021] [Accepted: 05/26/2021] [Indexed: 12/04/2022] Open
Abstract
A series of novel quinoline-based tetracyclic ring-systems were synthesized and evaluated in vitro for their antiplasmodial, antiproliferative and antimicrobial activities. The novel hydroiodide salts 10 and 21 showed the most promising antiplasmodial inhibition, with compound 10 displaying higher selectivity than the employed standards. The antiproliferative assay revealed novel pyridophenanthridine 4b to be significantly more active against human prostate cancer (IC50 = 24 nM) than Puromycin (IC50 = 270 nM) and Doxorubicin (IC50 = 830 nM), which are used for clinical treatment. Pyridocarbazoles 9 was also moderately effective against all the employed cancer cell lines and moreover showed excellent biofilm inhibition (9a: MBIC = 100 µM; 9b: MBIC = 100 µM).
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2
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Bhanvadia VJ, Choudhury A, Iyer PK, Zade SS, Patel AL. Constructing fused bis-isatins from pyrroloindoles using direct oxidation approach and re-visiting indophenine reaction. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Wu C, Berritt S, Liang X, Walsh PJ. Palladium-Catalyzed Enantioselective Alkenylation of Sulfenate Anions. Org Lett 2019; 21:960-964. [PMID: 30694063 DOI: 10.1021/acs.orglett.8b03943] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A novel approach to synthesize enantio-enriched alkenyl/aryl sulfoxides is achieved by using CsF to generate sulfenate anions and conducting the catalytic enantioselective alkenylation with [Pd(allyl)Cl]2/(2 R)-1-[(1 R)-1-[bis(1,1-dimethylethyl)phosphino]ethyl]-2-(diphenylphosphino)ferrocene (SL-J002-1). A wide variety of sulfoxides bearing sensitive functional groups are produced with high yields (up to 94%) and enantioselectivities (up to 92%).
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Affiliation(s)
- Chen Wu
- Roy and Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Simon Berritt
- Roy and Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Xiaoxia Liang
- Roy and Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States.,Natural Medicine Research Center, College of Veterinary Medicine , Sichuan Agricultural University , Chengdu 611130 , People's Republic of China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
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4
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Abstract
The present review provides a comprehensive overview of the synthetic methods developed
recently for 6H-Indolo[2,3-b]quinoline. The review is classified into the following: 1) inheriting indole
skeleton and constructing quinoline ring; 2) inheriting quinoline skeleton and constructing indole ring,
and 3) convergent strategies constructing both rings simultaneously or step by step. This review
discusses the scope of multifunctional reactivity of indole and quinoline skeleton for constructing the
desired indoloquinolines as explored in various research strategies.
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Affiliation(s)
- Hari K. Kadam
- Department of Chemistry, St. Xavier's College, Mapusa, Goa - 403507, India
| | - Santosh G. Tilve
- Department of Chemistry, Goa University, Taleigao Plateau, Goa - 403206, India
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5
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Fused electron deficient semiconducting polymers for air stable electron transport. Nat Commun 2018; 9:416. [PMID: 29379022 PMCID: PMC5789062 DOI: 10.1038/s41467-018-02852-6] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 01/03/2018] [Indexed: 12/13/2022] Open
Abstract
Conventional semiconducting polymer synthesis typically involves transition metal-mediated coupling reactions that link aromatic units with single bonds along the backbone. Rotation around these bonds contributes to conformational and energetic disorder and therefore potentially limits charge delocalisation, whereas the use of transition metals presents difficulties for sustainability and application in biological environments. Here we show that a simple aldol condensation reaction can prepare polymers where double bonds lock-in a rigid backbone conformation, thus eliminating free rotation along the conjugated backbone. This polymerisation route requires neither organometallic monomers nor transition metal catalysts and offers a reliable design strategy to facilitate delocalisation of frontier molecular orbitals, elimination of energetic disorder arising from rotational torsion and allowing closer interchain electronic coupling. These characteristics are desirable for high charge carrier mobilities. Our polymers with a high electron affinity display long wavelength NIR absorption with air stable electron transport in solution processed organic thin film transistors. Semiconducting polymers are usually prepared by transition metal mediated coupling reactions that cause problems for sustainability and biological applications. Here the authors synthesise fused electron deficient polymers that are air stable and have high electron affinities, via metal free aldol polymerisation reactions.
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6
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Abstract
The copper(II) trifluoromethanesulfonate-catalyzed Pummerer reaction of β-ketosulfoxides with 1,3-dicarbonyl compounds or π-nucleophiles such as phenols, arenes, and tetraallylsilane is reported. The mild conditions provide an efficient entry to a novel class of polysubstituted 3-alkylthiofuran and polysubstituted 3-thiobenzofuran heterocycles from readily available materials.
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Affiliation(s)
- Regev Parnes
- Department of Chemistry, Ben-Gurion University of the Negev , Beer-Sheva 84105, Israel
| | - Hagai Reiss
- Department of Chemistry, Ben-Gurion University of the Negev , Beer-Sheva 84105, Israel
| | - Doron Pappo
- Department of Chemistry, Ben-Gurion University of the Negev , Beer-Sheva 84105, Israel
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7
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Zhang Z, Gao X, Yu H, Bi J, Zhang G. Tandem Oxidative α-Hydroxylation/β-Acetalization Reaction of β-Ketoamides and Its Applications. ACS OMEGA 2017; 2:7746-7754. [PMID: 31457331 PMCID: PMC6645376 DOI: 10.1021/acsomega.7b01526] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 10/30/2017] [Indexed: 06/10/2023]
Abstract
A tandem oxidative α-hydroxylation/β-acetalization reaction of β-ketoamides was developed in the presence of PIDA and NaOH. This reaction proceeded at 25 °C in the absence of a metal catalyst to provide 2-hydroxy-3,3-dimethoxy-N-substituted butanamides in good to excellent yields from readily available starting materials. The application of this chemistry to the construction of α-hydroxy-β-ketoamides and quinolinones was also described.
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Affiliation(s)
- Zhiguo Zhang
- Key
Laboratory of Green Chemical Media and Reactions, Ministry of Education,
School of Chemistry and Chemical Engineering, Henan Key Laboratory
of Organic Functional Molecule and Drug Innovation, Henan Normal University, 46# East of Construction Road, Xinxiang, Henan 453007, China
- Jilin
Province Key Laboratory of Organic Functional Molecular Design &
Synthesis, Northeast Normal University, Changchun, Jilin 130024, China
| | - Xiaolong Gao
- Key
Laboratory of Green Chemical Media and Reactions, Ministry of Education,
School of Chemistry and Chemical Engineering, Henan Key Laboratory
of Organic Functional Molecule and Drug Innovation, Henan Normal University, 46# East of Construction Road, Xinxiang, Henan 453007, China
| | - Haifeng Yu
- School
of Chemistry and Life Science, Anshan Normal
University, 33# Ping
An Street, Tiedong District, Anshan, Liaoning 114007, China
| | - Jingjing Bi
- Key
Laboratory of Green Chemical Media and Reactions, Ministry of Education,
School of Chemistry and Chemical Engineering, Henan Key Laboratory
of Organic Functional Molecule and Drug Innovation, Henan Normal University, 46# East of Construction Road, Xinxiang, Henan 453007, China
| | - Guisheng Zhang
- Key
Laboratory of Green Chemical Media and Reactions, Ministry of Education,
School of Chemistry and Chemical Engineering, Henan Key Laboratory
of Organic Functional Molecule and Drug Innovation, Henan Normal University, 46# East of Construction Road, Xinxiang, Henan 453007, China
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8
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Kuan SHC, Sun W, Wang L, Xia C, Tay MG, Liu C. Double Carbonylation Using Glyoxal (HCOCOH): A Practical Copper-Promoted Synthesis of Isatins from Primary and Secondary Anilines. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700583] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Suzie Hui Chin Kuan
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP); Chinese Academy of Sciences; Lanzhou 730000 People's Republic of China
- Department of Chemistry, Faculty of Resource Science and Technology; Universiti Malaysia Sarawak; 94300 Kota Samarahan, Sarawak Malaysia
| | - Wei Sun
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP); Chinese Academy of Sciences; Lanzhou 730000 People's Republic of China
| | - Lu Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP); Chinese Academy of Sciences; Lanzhou 730000 People's Republic of China
| | - Chungu Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP); Chinese Academy of Sciences; Lanzhou 730000 People's Republic of China
| | - Meng Guan Tay
- Department of Chemistry, Faculty of Resource Science and Technology; Universiti Malaysia Sarawak; 94300 Kota Samarahan, Sarawak Malaysia
| | - Chao Liu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP); Chinese Academy of Sciences; Lanzhou 730000 People's Republic of China
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9
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Tetrabutylammonium Iodide-Promoted Thiolation of Oxindoles Using Sulfonyl Chlorides as Sulfenylation Reagents. Molecules 2017; 22:molecules22081208. [PMID: 28763049 PMCID: PMC6152007 DOI: 10.3390/molecules22081208] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 07/26/2017] [Accepted: 07/28/2017] [Indexed: 11/30/2022] Open
Abstract
3-Sulfanyloxindoles were synthesised by triphenylphosphine-mediated transition-metal-free thiolation of oxindoles using sulfonyl chlorides as sulfenylation reagents. The above reaction was promoted by iodide anions, which was ascribed to the in situ conversion of sulfenyl chlorides into the more reactive sulfenyl iodides. Moreover, the thiolation of 3-aryloxindoles was facilitated by bases. The use of a transition-metal-free protocol, readily available reagents, and mild reaction conditions make this protocol more practical for preparing 3-sulfanyloxindoles than traditional methods.
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10
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E Y, Yuan T, Yin L, Xu Y. Asymmetric sulfenylation of 3-CF 3 -Oxindoles through organocatalysis with a quinidine derivative. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Méndez MV, Heredia DA, Larghi EL, Bracca ABJ, Kaufman TS. Efficient total synthesis of neocryptolepine and synthetic access to 6-methylquinindoline from a common intermediate. RSC Adv 2017. [DOI: 10.1039/c7ra05349e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The total synthesis of neocryptolepine and the synthesis of its non-natural isomer 6-methyl quinindoline were efficiently achieved in a few steps from a common intermediate.
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12
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Fan L, Liu M, Ye Y, Yin G. Synthesis of 6-Substituted 6H-Indolo[2,3-b]quinolines from Isoindigos. Org Lett 2016; 19:186-189. [DOI: 10.1021/acs.orglett.6b03484] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ling Fan
- Hubei Collaborative Innovation
Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant
Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, People’s Republic of China
| | - Meilin Liu
- Hubei Collaborative Innovation
Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant
Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, People’s Republic of China
| | - Yu Ye
- Hubei Collaborative Innovation
Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant
Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, People’s Republic of China
| | - Guodong Yin
- Hubei Collaborative Innovation
Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant
Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, People’s Republic of China
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13
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Dean WM, Šiaučiulis M, Storr TE, Lewis W, Stockman RA. Versatile C(sp2)−C(sp3) Ligand Couplings of Sulfoxides for the Enantioselective Synthesis of Diarylalkanes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602264] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- William M. Dean
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Mindaugas Šiaučiulis
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Thomas E. Storr
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - William Lewis
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Robert A. Stockman
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
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14
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Dean WM, Šiaučiulis M, Storr TE, Lewis W, Stockman RA. Versatile C(sp(2) )-C(sp(3) ) Ligand Couplings of Sulfoxides for the Enantioselective Synthesis of Diarylalkanes. Angew Chem Int Ed Engl 2016; 55:10013-6. [PMID: 27435802 DOI: 10.1002/anie.201602264] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/29/2016] [Indexed: 01/01/2023]
Abstract
The reaction of chiral (hetero)aryl benzyl sulfoxides with Grignard reagents affords enantiomerically pure diarylalkanes in up to 98 % yield and greater than 99.5 % enantiomeric excess. This ligand coupling reaction is tolerant to multiple substitution patterns and provides access to diverse areas of chemical space in three operationally simple steps from commercially available reagents. This strategy provides orthogonal access to electron-deficient heteroaromatic compounds, which are traditionally synthesized by transition metal catalyzed cross-couplings, and circumvents common issues associated with proto-demetalation and β-hydride elimination.
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Affiliation(s)
- William M Dean
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Mindaugas Šiaučiulis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Thomas E Storr
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Robert A Stockman
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
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15
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Ru(III)-mediated intramolecular ortho-C(sp2)–H activation/oxidative acylation: one-pot synthesis of isatins from α-hydroxy amides. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Khanal HD, Kim SH, Lee YR. Rhodium(ii)-catalyzed direct sulfenylation of diazooxindoles with disulfides. RSC Adv 2016. [DOI: 10.1039/c6ra12393g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Rhodium(ii)-catalyzed reactions for direct sulfenylation of diazooxindoles with disulfides via C–S bond formation was developed.
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Affiliation(s)
- Hari Datta Khanal
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
| | - Sung Hong Kim
- Analysis Research Division
- Daegu Center
- Korea Basic Science Institute
- Daegu 702-701
- Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan 712-749
- Republic of Korea
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17
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Itoh T, Nagata K, Sano D, Aoyama O, Kanemitsu T, Miyazaki M, Odanaka Y, Machida A. Phase-Transfer Catalyzed Sulfenylation of 3-Substituted-2-oxindoles. HETEROCYCLES 2016. [DOI: 10.3987/com-16-13414] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Cao Y, Yuan JS, Zhou X, Wang XY, Zhuang FD, Wang JY, Pei J. N-Fused BDOPV: a tetralactam derivative as a building block for polymer field-effect transistors. Chem Commun (Camb) 2015; 51:10514-6. [PMID: 26037890 DOI: 10.1039/c5cc02026c] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An N-fused BDOPV derivative, NBDOPV, was designed and synthesized. The photophysical and electrochemical properties of NBDOPV were systematically investigated. The NBDOPV-based conjugated polymer PITET shows a large hole mobility of 1.92 cm(2) V(-1) s(-1).
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Affiliation(s)
- Yue Cao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Center of Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.
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19
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Parnes R, Pappo D. Reductive Alkylation of Arenes by a Thiol-Based Multicomponent Reaction. Org Lett 2015; 17:2924-7. [DOI: 10.1021/acs.orglett.5b01142] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Regev Parnes
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Doron Pappo
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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20
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Just-Baringo X, Procter DJ. Sm(II)-Mediated Electron Transfer to Carboxylic Acid Derivatives: Development of Complexity-Generating Cascades. Acc Chem Res 2015; 48:1263-75. [PMID: 25871998 DOI: 10.1021/acs.accounts.5b00083] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Reductive electron transfer (ET) to organic compounds is a powerful method for the activation of substrates via the formation of radicals, radical anions, anions, and dianions that can be exploited in bond-cleaving and bond-forming processes. Since its introduction to the synthetic community in 1977 by Kagan, SmI2 has become one of the most important reducing agents available in the laboratory. Despite its widespread application in aldehyde and ketone reduction, it was widely accepted that carboxylic acid derivatives could not be reduced by SmI2; only recently has our work led to this dogma being overturned, and the reduction of carboxylic acid derivatives using SmI2 can now take its place alongside aldehyde/ketone reduction as a powerful activation mode for synthesis. In this Account, we set out our studies of the reduction of carboxylic acid derivatives using SmI2, SmI2-H2O, and SmI2-H2O-NR3 and the exploitation of the unusual radical anions that are now accessible in unprecedented carbon-carbon bond-forming processes. The Account begins with our serendipitous discovery that SmI2 mixed with H2O is able to reduce six-membered lactones to diols, a transformation previously thought to be impossible. After the successful development of selective monoreductions of Meldrum's acid and barbituric acid heterocyclic feedstocks, we then identified the SmI2-H2O-NR3 reagent system for the efficient reduction of a range of acyclic carboxylic acid derivatives that typically present a significant challenge for ET reductants. Mechanistic studies have led us to propose a common mechanism for the reduction of carboxylic acid derivatives using Sm(II), with only subtle changes observed as the carboxylic acid derivative and Sm(II) reagent system are varied. At the center of our postulated mechanism is the proposed reversibility of the first ET to the carbonyl of carboxylic acid derivatives, and this led us to devise several strategies that allow the radical anion intermediates to be exploited productively in efficient new processes. First, we have used internal directing groups in substrates to "switch on" productive ET to esters and amides and have exploited such an approach in tag-removal cyclization processes that deliver molecular scaffolds of significance in biology and materials science. Second, we have exploited external ligands to facilitate ET to carboxylic acid derivatives and have applied the strategy in telescoped reaction sequences. Finally, we have employed follow-up cyclizations with alkenes, alkynes, and allenes to intercept radical anion intermediates formed along the reaction path and have employed this strategy in complexity-generating cascade approaches to biologically significant molecular architectures. From our studies, it is now clear that Sm(II)-mediated ET to carboxylic acid derivatives constitutes a general strategy for inverting the polarity of the carbonyl, allowing nucleophilic carbon-centered radicals to be formed and exploited in novel chemical processes.
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Affiliation(s)
| | - David J. Procter
- School of Chemistry, University of Manchester, Manchester M13 9PL, U.K
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21
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22
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Highly regioselective synthesis of 3-alkylthio-2-oxindoles via DABCO-catalyzed allylic α-substitution of Morita–Baylis–Hillman carbonates of isatins with various thiols. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Parnes R, Narute S, Pappo D. Thiol-promoted selective addition of ketones to aldehydes. Org Lett 2014; 16:5922-5. [PMID: 25376009 DOI: 10.1021/ol502937n] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A simple and efficient thiol-mediated addition of ketones to aromatic and aliphatic aldehydes is reported. This thermodynamically controlled Pummerer/aldol reaction, which can tolerate both moisture and protic functional groups, provides a direct entry to syn-β-thioketones in high chemo- and regioselectivity. Mechanistic studies revealed that selective transformation of the aldehyde to an electrophilic thionium ion species concurrent with the generation of a nucleophilic vinyl sulfide coupling partner from the ketone is imposing cross-coupling over dimerization.
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Affiliation(s)
- Regev Parnes
- Department of Chemistry, Ben-Gurion University of the Negev , Beer-Sheva 84105, Israel
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24
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Bracca ABJ, Heredia DA, Larghi EL, Kaufman TS. Neocryptolepine (Cryprotackieine), A Unique Bioactive Natural Product: Isolation, Synthesis, and Profile of Its Biological Activity. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402910] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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25
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Cybulski M, Formela A, Fokt I. N-Chlorophthalimide as a mild and efficient chlorination reagent in the Gassman ortho alkylation of aromatic amines. Synthesis of 3-(methylthio)oxindoles. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.08.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Hurst TE, Gorman RM, Drouhin P, Perry A, Taylor RJK. A Direct CH/ArH Coupling Approach to Oxindoles, Thio‐oxindoles, 3,4‐Dihydro‐1
H
‐quinolin‐2‐ones, and 1,2,3,4‐Tetrahydroquinolines. Chemistry 2014; 20:14063-73. [DOI: 10.1002/chem.201403917] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Indexed: 12/27/2022]
Affiliation(s)
- Timothy E. Hurst
- Department of Chemistry, University of York, Heslington, York, YO10 5DD (UK), Fax: (+44) 1904324523
| | - Ryan M. Gorman
- Department of Chemistry, University of York, Heslington, York, YO10 5DD (UK), Fax: (+44) 1904324523
| | - Pauline Drouhin
- Department of Chemistry, University of York, Heslington, York, YO10 5DD (UK), Fax: (+44) 1904324523
| | - Alexis Perry
- Physics and Medical Imaging, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Physics Building, Stocker Road, Exeter, EX4 4QL (UK)
| | - Richard J. K. Taylor
- Department of Chemistry, University of York, Heslington, York, YO10 5DD (UK), Fax: (+44) 1904324523
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Levick MT, Grace I, Dai SY, Kasch N, Muryn C, Lambert C, Turner ML, Procter DJ. A Sm(II)-Mediated Cascade Approach to Dibenzoindolo[3,2-b]carbazoles: Synthesis and Evaluation. Org Lett 2014; 16:2292-5. [DOI: 10.1021/ol500841b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew T. Levick
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
| | - Iain Grace
- Department
of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
| | - Sheng-Yao Dai
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
| | - Nicholas Kasch
- School
of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, U.K
| | - Christopher Muryn
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
| | - Colin Lambert
- Department
of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
| | - Michael L. Turner
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
| | - David J. Procter
- School
of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K
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Rumer JW, Levick M, Dai SY, Rossbauer S, Huang Z, Biniek L, Anthopoulos TD, Durrant JR, Procter DJ, McCulloch I. BPTs: thiophene-flanked benzodipyrrolidone conjugated polymers for ambipolar organic transistors. Chem Commun (Camb) 2013; 49:4465-7. [DOI: 10.1039/c3cc40811f] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Rumer JW, Dai SY, Levick M, Biniek L, Procter DJ, McCulloch I. Synthesis of two dihydropyrroloindoledione-based copolymers for organic electronics. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26471] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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30
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Levick MT, Coote SC, Grace I, Lambert C, Turner ML, Procter DJ. Phase Tag-Assisted Synthesis of Benzo[b]carbazole End-Capped Oligothiophenes. Org Lett 2012; 14:5744-7. [DOI: 10.1021/ol302748h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew T. Levick
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K., and Department of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
| | - Susannah C. Coote
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K., and Department of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
| | - Iain Grace
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K., and Department of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
| | - Colin Lambert
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K., and Department of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
| | - Michael L. Turner
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K., and Department of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
| | - David J. Procter
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K., and Department of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
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31
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Wang C, Yang X, Loh CCJ, Raabe G, Enders D. Organocatalytic, Asymmetric Synthesis of 3-SulfenylatedN-Boc-Protected Oxindoles. Chemistry 2012; 18:11531-5. [DOI: 10.1002/chem.201201262] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Indexed: 11/09/2022]
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32
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Pumphrey AL, Dong H, Driver TG. Rh(II)2-catalyzed synthesis of α-, β-, or δ-carbolines from aryl azides. Angew Chem Int Ed Engl 2012; 51:5920-3. [PMID: 22539459 PMCID: PMC3397914 DOI: 10.1002/anie.201201788] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Revised: 04/10/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Ashley L. Pumphrey
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL 60607 (USA), Homepage: http://www.chem.uic.edu/driver
| | - Huijun Dong
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL 60607 (USA), Homepage: http://www.chem.uic.edu/driver
| | - Tom G. Driver
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL 60607 (USA), Homepage: http://www.chem.uic.edu/driver
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33
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Pumphrey AL, Dong H, Driver TG. RhII2-Catalyzed Synthesis of α-, β-, or δ-Carbolines from Aryl Azides. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201788] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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34
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Li Y, Shi Y, Huang Z, Wu X, Xu P, Wang J, Zhang Y. Catalytic thia-Sommelet-Hauser rearrangement: application to the synthesis of oxindoles. Org Lett 2011; 13:1210-3. [PMID: 21306152 DOI: 10.1021/ol200091k] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of 3-arylthio-1,3-disubstituted-oxindoles were prepared in good yields by the reaction of α-diazocarbonyl compounds and sulfenamides. The reaction involves a Rh-catalyzed thia-Sommelet-Hauser-type rearrangement.
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Affiliation(s)
- Yuye Li
- Beijing National Laboratory of Molecular Sciences (BNLMS), College of Chemistry, Peking University, Beijing, China
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35
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Smith JA, Molesworth PP, Hyland CJ, Ryan JH. Seven-Membered Rings. PROGRESS IN HETEROCYCLIC CHEMISTRY 2011. [DOI: 10.1016/s0959-6380(11)22016-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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36
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Coote SC, Quenum S, Procter DJ. Exploiting Sm(ii) and Sm(iii) in SmI2-initiated reaction cascades: application in a tag removal–cyclisation approach to spirooxindole scaffolds. Org Biomol Chem 2011; 9:5104-8. [DOI: 10.1039/c1ob05710c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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37
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Hostyn S, Tehrani KA, Lemière F, Smout V, Maes BU. Highly efficient one-pot synthesis of D-ring chloro-substituted neocryptolepines via a condensation—Pd-catalyzed intramolecular direct arylation strategy. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.10.077] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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38
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Smith LHS, Nguyen TT, Sneddon HF, Procter DJ. Synthesis of the ABH rings of ecteinascidin 597 using a connective Pummerer-type cyclisation. Chem Commun (Camb) 2011; 47:10821-3. [DOI: 10.1039/c1cc13992d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Dolle RE, Bourdonnec BL, Worm K, Morales GA, Thomas CJ, Zhang W. Comprehensive survey of chemical libraries for drug discovery and chemical biology: 2009. JOURNAL OF COMBINATORIAL CHEMISTRY 2010; 12:765-806. [PMID: 20923157 PMCID: PMC4140011 DOI: 10.1021/cc100128w] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Roland E Dolle
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, USA.
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40
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Kim CB, Lee SK, Park KY. Liquid-Phase Synthesis of Biaryl Compounds by the Hydrogenolysis of Pentaerythritol-Supported Biarylsulfonates. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.9.2459] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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41
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Smith L, Coote S, Sneddon H, Procter D. Jenseits der Pummerer-Reaktion: Entwicklungen in der Chemie der Thioniumionen. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201000517] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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42
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Smith L, Coote S, Sneddon H, Procter D. Beyond the Pummerer Reaction: Recent Developments in Thionium Ion Chemistry. Angew Chem Int Ed Engl 2010; 49:5832-44. [DOI: 10.1002/anie.201000517] [Citation(s) in RCA: 263] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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43
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Ovens C, Vogel JC, Martin NG, Procter DJ. Intramolecular aryl transfer to thionium ions in an approach to α-arylacetamides. Chem Commun (Camb) 2009:3101-3. [DOI: 10.1039/b904577e] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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