1
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Wan Y, Adda AK, Qian J, Vaccaro DA, He P, Li G, Norton JR. Hydrogen Atom Transfer (HAT)-Mediated Remote Desaturation Enabled by Fe/Cr-H Cooperative Catalysis. J Am Chem Soc 2024; 146:4795-4802. [PMID: 38329998 DOI: 10.1021/jacs.3c13085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
An iron/chromium system (Fe(OAc)2, CpCr(CO)3H) catalyzes the preparation of β,γ- or γ,δ-unsaturated amides from 1,4,2-dioxazol-5-ones. An acyl nitrenoid iron complex seems likely to be responsible for C-H activation. A cascade of three H• transfer steps appears to be involved: (i) the abstraction of H• from a remote C-H bond by the nitrenoid N, (ii) the transfer of H• from Cr to N, and (iii) the abstraction of H• from a radical substituent by the Cr•. The observed kinetic isotope effects are consistent with the proposed mechanism if nitrenoid formation is the rate-determining step. The Fe/Cr catalysts can also desaturate substituted 1,4,2-dioxazol-5-ones to 3,5-dienamides.
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Affiliation(s)
- Yanjun Wan
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322, United States
| | - Augustine K Adda
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
| | - Jin Qian
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
| | - David A Vaccaro
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
| | - Peixian He
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
| | - Gang Li
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322, United States
| | - Jack R Norton
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
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2
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Chatterjee S, Sahoo R, Nanda S. Recent reports on the synthesis of γ-butenolide, γ-alkylidenebutenolide frameworks, and related natural products. Org Biomol Chem 2021; 19:7298-7332. [PMID: 34612357 DOI: 10.1039/d1ob00875g] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
γ-Butenolides are fundamental frameworks found in many naturally occurring compounds, and they exhibit tremendous biological activities. γ-Butenolides also have proven their potential as useful synthetic intermediates in the total synthesis of natural compounds. Over the years, many γ-butenolide natural products have been isolated, having exocyclic γ-δ unsaturation in their structure. These natural products are collectively referred to as γ-alkylidenebutenolides. Considering the different biological profiles and wide-ranging structural diversity of the optically active γ-butenolide, the development of synthetic strategies for assembling such challenging scaffolds has attracted significant attention from synthetic chemists in recent times. In this report, a brief discussion will be provided to address isolation, biogenesis, and current state-of-the-art synthetic protocols for such molecules. This report aims to focus on synthetic strategies for γ-butenolides from 2010-2020 with a particular emphasis on γ-alkylidenebutenolides and related molecules. Metal-mediated catalytic transformation and organocatalysis are the two main reaction types that have been widely used to access such molecules. Mechanistic considerations, enantioselective synthesis, and practical applications of the reported procedures are also taken into consideration.
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Affiliation(s)
- Shrestha Chatterjee
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
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3
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Sen A, Zhu L, Takizawa S, Takenaka K, Sasai H. Synthesis of Allylamine Derivatives
via
Intermolecular Aza‐Wacker‐Type Reaction Promoted by Palladium‐SPRIX Catalyst. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Abhijit Sen
- The Institute of Scientific and Industrial ResearchOsaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan
- Present Address: RIKENCenter for Sustainable Resource Science Wako Saitama 351-0198 Japan
| | - Linpeng Zhu
- The Institute of Scientific and Industrial ResearchOsaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan
| | - Shinobu Takizawa
- The Institute of Scientific and Industrial ResearchOsaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan
| | - Kazuhiro Takenaka
- The Institute of Scientific and Industrial ResearchOsaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan
- Present Address: National Institute of TechnologyKagawa College 551 Kohda, Takuma-cho, Mitoyo-shi Kagawa 769-1192 Japan
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial ResearchOsaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan
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4
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Ding R, Liu Y, Liu L, Li H, Tao S, Sun B, Tian H. A facile synthesis of γ-butenolides via cyclization of 3-alkenoic acids with dimethyl sulfoxide and oxalyl bromide. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1652914] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Rui Ding
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing, China
| | - Yongguo Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing, China
| | - Lei Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing, China
| | - Huimin Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing, China
| | - Sichen Tao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing, China
| | - Baoguo Sun
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing, China
| | - Hongyu Tian
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Key laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing, China
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5
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Danyliuk IY, Vas’kevich RI, Vas'kevich AI, Rusanov EB, Vovk MV. Sulfanyl chloride induced heterocyclization of N-(pyrazolyl)styrylacetamides. PHOSPHORUS SULFUR 2019. [DOI: 10.1080/10426507.2018.1528257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Ivanna Yu. Danyliuk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Ruslan I. Vas’kevich
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Alla I. Vas'kevich
- National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine
| | - Eduard B. Rusanov
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Mykhailo V. Vovk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
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6
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Sen A, Takenaka K, Sasai H. Enantioselective Aza-Wacker-Type Cyclization Promoted by Pd-SPRIX Catalyst. Org Lett 2018; 20:6827-6831. [DOI: 10.1021/acs.orglett.8b02946] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Abhijit Sen
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
| | - Kazuhiro Takenaka
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
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7
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Ding R, Li Y, Liu Y, Sun B, Yang S, Tian H. Synthesis of butenolides by reactions of 3-alkenoic acids with diphenyl sulfoxide/oxalyl chloride. FLAVOUR FRAG J 2018. [DOI: 10.1002/ffj.3464] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Rui Ding
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Beijing Key Laboratory of Flavour Chemistry; Beijing Technology and Business University; Beijing China
| | - Yaxi Li
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Beijing Key Laboratory of Flavour Chemistry; Beijing Technology and Business University; Beijing China
| | - Yongguo Liu
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Beijing Key Laboratory of Flavour Chemistry; Beijing Technology and Business University; Beijing China
| | - Baoguo Sun
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Beijing Key Laboratory of Flavour Chemistry; Beijing Technology and Business University; Beijing China
| | - Shaoxiang Yang
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Beijing Key Laboratory of Flavour Chemistry; Beijing Technology and Business University; Beijing China
| | - Hongyu Tian
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Beijing Key Laboratory of Flavour Chemistry; Beijing Technology and Business University; Beijing China
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8
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Sutar RL, Sen S, Eivgi O, Segalovich G, Schapiro I, Reany O, Lemcoff NG. Guiding a divergent reaction by photochemical control: bichromatic selective access to levulinates and butenolides. Chem Sci 2018; 9:1368-1374. [PMID: 29675185 PMCID: PMC5885942 DOI: 10.1039/c7sc05094a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 12/18/2017] [Indexed: 01/02/2023] Open
Abstract
Allylic and acrylic substrates may be efficiently transformed by a sequential bichromatic photochemical process into derivatives of levulinates or butenolides with high selectivity when phenanthrene is used as a regulator. Thus, UV-A photoinduced cross-metathesis (CM) couples the acrylic and allylic counterparts and subsequent UV-C irradiation initiates E-Z isomerization of the carbon-carbon double bond, followed by one of two competing processes; namely, cyclization by transesterification or a 1,5-H shift and tautomerization. Quantum chemical calculations demonstrate that intermediates are strongly blue-shifted for the cyclization while red-shifted for the 1,5-H shift reaction. Hence, delaying the double bond migration by employing UV-C absorbing phenanthrene, results in a selective novel divergent all-photochemical pathway for the synthesis of fundamental structural motifs of ubiquitous natural products.
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Affiliation(s)
- Revannath L Sutar
- Department of Chemistry , Ben-Gurion University of the Negev , Beer-Sheva 84105 , Israel .
- Department of Natural Sciences , The Open University of Israel , Ra'anana , 43537 , Israel
| | - Saumik Sen
- Fritz Haber Center for Molecular Dynamics , Institute of Chemistry , The Hebrew University of Jerusalem , Jerusalem , 91904 , Israel
| | - Or Eivgi
- Department of Chemistry , Ben-Gurion University of the Negev , Beer-Sheva 84105 , Israel .
| | - Gal Segalovich
- Department of Chemistry , Ben-Gurion University of the Negev , Beer-Sheva 84105 , Israel .
| | - Igor Schapiro
- Fritz Haber Center for Molecular Dynamics , Institute of Chemistry , The Hebrew University of Jerusalem , Jerusalem , 91904 , Israel
| | - Ofer Reany
- Department of Natural Sciences , The Open University of Israel , Ra'anana , 43537 , Israel
| | - N Gabriel Lemcoff
- Department of Chemistry , Ben-Gurion University of the Negev , Beer-Sheva 84105 , Israel .
- Ilse Katz Institute for Nanoscale Science and Technology , Ben-Gurion University of the Negev , Beer-Sheva , 84105 , Israel
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9
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Bao M, Lu W, Cai Y, Qiu L, Xu X. Gold(I)-Catalyzed Cyclization/Carbonylation Cascade Reaction of 1,6-Diynes: An Access to β,γ-Unsaturated Ketones. J Org Chem 2017; 82:13386-13395. [PMID: 29161043 DOI: 10.1021/acs.joc.7b02461] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A gold-catalyzed cyclization/carbonylation cascade reaction of 1,6-diynes is reported. The reaction goes through 6-exo-dig and 6-endo-dig cyclizations in sequence, followed by hydration to provide the β,γ-unsaturated ketones with moderate to high yields under mild reaction conditions. This is the first example of intercepting the postulated 1,3-oxazine vinylgold intermediate with another pendant alkyne, which not only verifies the proposed mechanism but also provides the ketone products with cyclized 1,2,3,6-tetrahydropyridine or 3,6-dihydro-2H-pyran frameworks from corresponding diynes.
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Affiliation(s)
- Ming Bao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Wei Lu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Yanping Cai
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Lihua Qiu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Xinfang Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, China
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10
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Fernandes RA, Kattanguru P, Gholap SP, Chaudhari DA. Recent advances in the Overman rearrangement: synthesis of natural products and valuable compounds. Org Biomol Chem 2017; 15:2672-2710. [DOI: 10.1039/c6ob02625g] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
This review documents the reports since 2005 on the Overman rearrangement, an important C–N bond forming reaction that has been profoundly used in the synthesis of natural products, synthetic intermediates, building blocks and valuable compounds.
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Affiliation(s)
- Rodney A. Fernandes
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Pullaiah Kattanguru
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Sachin P. Gholap
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Dipali A. Chaudhari
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
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11
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Fujita T, Watabe Y, Yamashita S, Tanabe H, Nojima T, Ichikawa J. Silver-catalyzed Vinylic C–F Bond Activation: Synthesis of 2-Fluoroindoles from β,β-Difluoro-o-sulfonamidostyrenes. CHEM LETT 2016. [DOI: 10.1246/cl.160427] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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12
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Takenaka K, Lin X, Takizawa S, Sasai H. Structural Features and Asymmetric Environment of i-Pr-SPRIX Ligand. Chirality 2015; 27:532-7. [PMID: 26096770 DOI: 10.1002/chir.22467] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Revised: 04/14/2015] [Accepted: 04/15/2015] [Indexed: 11/06/2022]
Abstract
Novel chiral diisopropyl spiro bis(isoxazoline) ligands, anti-i-Pr-SPRIX and syn-i-Pr-SPRIX, were designed and synthesized. Their catalytic utility, X-ray crystallographic analyses, and complexation studies demonstrated the structural features of tetraisopropyl spiro bis(isoxazoline) ligand, i-Pr-SPRIX, which is a prominent ligand in various enantioselective Pd catalytic processes: All i-Pr groups work in collaboration to create an effective asymmetric environment.
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Affiliation(s)
- Kazuhiro Takenaka
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, Japan
| | - Xianjin Lin
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, Japan
| | - Shinobu Takizawa
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, Japan
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, Japan
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13
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Pelkey ET, Pelkey SJ, Greger JG. De Novo Synthesis of 3-Pyrrolin-2-Ones. ADVANCES IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/bs.aihch.2015.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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Phae-nok S, Kuhakarn C, Pohmakotr M, Reutrakul V, Soorukram D. Convenient synthesis of α,β-unsaturated γ-butyrolactones and γ-butyrolactams via decarboxylative iodination of paraconic acids and β-carboxyl-γ-butyrolactams using 1,3-diiodo-5,5-dimethylhydantoin. Org Biomol Chem 2015; 13:11087-95. [DOI: 10.1039/c5ob01574j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient synthetic approach to α,β-unsaturated γ-butyrolactones and γ-butyrolactams is reported.
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Affiliation(s)
- Supasorn Phae-nok
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Chutima Kuhakarn
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Manat Pohmakotr
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Vichai Reutrakul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
| | - Darunee Soorukram
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Faculty of Science
- Mahidol University
- Bangkok 10400
- Thailand
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15
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Fang X, Li H, Jackstell R, Beller M. Selective Palladium-Catalyzed Aminocarbonylation of 1,3-Dienes: Atom-Efficient Synthesis of β,γ-Unsaturated Amides. J Am Chem Soc 2014; 136:16039-43. [DOI: 10.1021/ja507530f] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Xianjie Fang
- Leibniz-Institut für Katalyse e.V., an der Universität Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Haoquan Li
- Leibniz-Institut für Katalyse e.V., an der Universität Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Ralf Jackstell
- Leibniz-Institut für Katalyse e.V., an der Universität Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V., an der Universität Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
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16
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Takenaka K, Mohanta SC, Sasai H. Palladium Enolate Umpolung: Cyclative Diacetoxylation of Alkynyl Cyclohexadienones Promoted by a Pd/SPRIX Catalyst. Angew Chem Int Ed Engl 2014; 53:4675-9. [DOI: 10.1002/anie.201311172] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 02/21/2014] [Indexed: 11/11/2022]
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17
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Takenaka K, Mohanta SC, Sasai H. Palladium Enolate Umpolung: Cyclative Diacetoxylation of Alkynyl Cyclohexadienones Promoted by a Pd/SPRIX Catalyst. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201311172] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Sridharan V, Fan L, Takizawa S, Suzuki T, Sasai H. Pd(II)-SDP-catalyzed enantioselective 5-exo-dig cyclization of γ-alkynoic acids: application to the synthesis of functionalized dihydofuran-2(3H)-ones containing a chiral quaternary carbon center. Org Biomol Chem 2014; 11:5936-43. [PMID: 23903490 DOI: 10.1039/c3ob41103f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Pd(II)-SDP-catalyzed first enantioselective intramolecular cyclization of α,α-disubstituted γ-alkynoic acids is described. This 5-exo-dig cyclization afforded dihydrofuran-2(3H)-ones bearing a chiral quaternary carbon center in excellent yields with enantioselectivities up to 71%. A mechanism involving palladium(II) species is proposed to rationalize the outcome of the reaction.
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Affiliation(s)
- Vellaisamy Sridharan
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan.
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19
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Li Z, Ling F, Cheng D, Ma C. Pd-Catalyzed Branching Cyclizations of Enediyne-Imides toward Furo[2,3-b]pyridines. Org Lett 2014; 16:1822-5. [DOI: 10.1021/ol500574b] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zexiang Li
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, P. R. China
| | - Fei Ling
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, P. R. China
| | - Dong Cheng
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, P. R. China
| | - Cheng Ma
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, P. R. China
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20
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Choudhary G, Naganaboina RT, Peddinti RK. Expedient synthesis of novel 1,4-benzoxazine and butenolide derivatives. RSC Adv 2014. [DOI: 10.1039/c4ra01736f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A rapid and efficient protocol for the synthesis of 2-hydroxy-1,4-benzoxazine derivatives has been developed. These intermediates served as precursors for the synthesis of a series of novel butenolide derivatives and 2-amino-1,4-benzoxazine derivatives.
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Affiliation(s)
- Garima Choudhary
- Department of Chemistry
- Indian Institute of Technology
- Roorkee-247667, India
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21
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Liu Q, Wu L, Jiao H, Fang X, Jackstell R, Beller M. Domino Catalysis: Palladium-Catalyzed Carbonylation of Allylic Alcohols to β,γ-Unsaturated Esters. Angew Chem Int Ed Engl 2013; 52:8064-8. [DOI: 10.1002/anie.201303850] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Indexed: 11/07/2022]
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22
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Liu Q, Wu L, Jiao H, Fang X, Jackstell R, Beller M. Domino Catalysis: Palladium-Catalyzed Carbonylation of Allylic Alcohols to β,γ-Unsaturated Esters. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303850] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Gabr RK, Hatakeyama T, Takenaka K, Takizawa S, Okada Y, Nakamura M, Sasai H. DFT Study of a 5-endo-trig-Type Cyclization of 3-Alkenoic Acids by Using Pd-Spiro-bis(isoxazoline) as Catalyst: Importance of the Rigid Spiro Framework for Both Selectivity and Reactivity. Chemistry 2013; 19:9518-25. [DOI: 10.1002/chem.201203189] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 04/09/2013] [Indexed: 11/09/2022]
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24
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Takenaka K, Dhage YD, Sasai H. Enantioselective Pd(ii)–Pd(iv) catalysis utilizing a SPRIX ligand: efficient construction of chiral 3-oxy-tetrahydrofurans. Chem Commun (Camb) 2013; 49:11224-6. [DOI: 10.1039/c3cc44797a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Theodorou V, Gogou M, Philippidou M, Ragoussis V, Paraskevopoulos G, Skobridis K. Synthesis of β,γ-unsaturated primary amides from α,β-unsaturated acids and investigation of the mechanism. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.096] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Takenaka K, Akita M, Tanigaki Y, Takizawa S, Sasai H. Enantioselective cyclization of 4-alkenoic acids via an oxidative allylic C-H esterification. Org Lett 2011; 13:3506-9. [PMID: 21657245 DOI: 10.1021/ol201314m] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
An enantioselective intramolecular oxidative cyclization of 4-alkenoic acids was developed. The reaction proceeded via a π-allyl Pd intermediate generated by an allylic C-H activation to give γ-lactone derivatives with moderate to good enantioselectivity. Spiro bis(isoxazoline) ligand, SPRIX, was indispensable for this asymmetric transformation.
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Affiliation(s)
- Kazuhiro Takenaka
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
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Takenaka K, Hashimoto S, Takizawa S, Sasai H. Chlorinative Cyclization of 1,6-Enynes by Enantioselective Palladium(II)/Palladium(IV) Catalysis. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201000926] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Daly M, Gill K, Sime M, Simpson GL, Sutherland A. A new general approach for the stereocontrolled synthesis of functionalised γ- and δ-lactams. Org Biomol Chem 2011; 9:6761-70. [DOI: 10.1039/c1ob05833a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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