1
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Enantioselective synthesis of heterocyclic compounds using photochemical reactions. Photochem Photobiol Sci 2021; 20:1657-1674. [PMID: 34822126 DOI: 10.1007/s43630-021-00135-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 11/06/2021] [Indexed: 10/19/2022]
Abstract
Different methods for the direct enantioselective photochemical synthesis of heterocycles are presented. Currently, asymmetric catalysis with templates involving hydrogen bonds or metal complexes is intensively investigated. Enzyme catalysis can be simplified under photochemical conditions. For example, in multi enzyme systems, one or more enzyme catalytic steps can be replaced by simple photochemical reactions. Chiral induction in photochemical reactions performed with homochiral crystals is highly efficient. Such reactions can also be carried out with crystalline inclusion complexes. Inclusion of a photochemical substrate and an enantiopure compound in zeolites also leads to enantioselective compounds. In all these methods, the conformational mobility of the photochemical substrates is reduced or controlled. Memory of chirality is a particular case in which a chiral information is temporally lost but the rigid conformations stabilize the molecular structure which leads to the formation of enantiopure compounds. Such studies allows a profound understanding on how particular conformations determine the configuration of the final products.Graphical abstract.
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2
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Sekiguchi Y, Yoshikai N. Zinc-Catalyzed β-Functionalization of Cyclopropanols via Enolized Homoenolate. J Am Chem Soc 2021; 143:18400-18405. [PMID: 34714060 DOI: 10.1021/jacs.1c10109] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We report herein a zinc-catalyzed β-allylation of cyclopropanols with Morita-Baylis-Hillman (MBH) carbonates with retention of the cyclopropane ring. The reaction is promoted by a zinc aminoalkoxide catalyst, affording cyclopropyl-fused α-alkylidene-δ-valerolactone derivatives in moderate to good yields. Mechanistic experiments suggest that the present reaction does not proceed via direct β-C-H cleavage of the cyclopropanol, but involves zinc homoenolate and its enolization to generate a key bis-nucleophilic species. α-Allylation of this "enolized homoenolate" with MBH carbonate would be followed by regeneration of the cyclopropane ring and irreversible lactonization. The enolized homoenolate mechanism has also been proven to allow for β-functionalization with alkylidenemalononitrile as the reaction partner. A sequence of the present reaction and known cyclopropanol transformation provides an opportunity to transform a simple cyclopropanol into α,β- or β,β-difunctionalized ketones.
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Affiliation(s)
- Yoshiya Sekiguchi
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.,Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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3
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Son EC, No J, Kim S. Organocatalytic enantioselective synthesis of phthalans via Wittig/
oxa‐Michael
cascade reaction. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Eun Chae Son
- Department of Chemistry Kyonggi University Suwon Republic of Korea
| | - Jaeeun No
- Department of Chemistry Kyonggi University Suwon Republic of Korea
| | - Sung‐Gon Kim
- Department of Chemistry Kyonggi University Suwon Republic of Korea
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4
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Son EC, Kim SY, Kim SG. Squaramide-Catalyzed Asymmetric Intramolecular Oxa-Michael Reaction of α,β-Unsaturated Carbonyls Containing Benzyl Alcohol: Construction of Chiral 1-Substituted Phthalans. J Org Chem 2021; 86:6826-6839. [PMID: 33904749 DOI: 10.1021/acs.joc.1c00715] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Organocatalytic enantioselective intramolecular oxa-Michael reactions of benzyl alcohol bearing α,β-unsaturated carbonyls as Michael acceptors are presented herein. Using cinchona squaramide-based organocatalyst, enones as well as α,β-unsaturated esters containing benzyl alcohol provided their corresponding 1,3-dihydroisobenzofuranyl-1-methylene ketones and 1,3-dihydroisobenzofuranyl-1-methylene esters in excellent yields with high enantioselectivities. In addition, enantioenriched 1,3-dihydroisobenzofuranyl-1-methylene ketone could be obtained from the Wittig/oxa-Michael reaction cascade of 1,3-dihydro-2-benzofuran-1-ol.
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Affiliation(s)
- Eun Chae Son
- Department of Chemistry, College of Natural Science, Kyonggi University, 154-42 Gwanggyosan-ro, Yeongtong-gu, Suwon 16227, Republic of Korea
| | - Seung Yeon Kim
- Department of Chemistry, College of Natural Science, Kyonggi University, 154-42 Gwanggyosan-ro, Yeongtong-gu, Suwon 16227, Republic of Korea
| | - Sung-Gon Kim
- Department of Chemistry, College of Natural Science, Kyonggi University, 154-42 Gwanggyosan-ro, Yeongtong-gu, Suwon 16227, Republic of Korea
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5
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Meninno S, Franco F, Benaglia M, Lattanzi A. Pyrazoleamides in Catalytic Asymmetric Reactions: Recent Advances. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II 132 84084 Fisciano Italy
| | - Francesca Franco
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II 132 84084 Fisciano Italy
| | - Maurizio Benaglia
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II 132 84084 Fisciano Italy
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6
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Yang XC, Xu M, Wang JB, Liu MM, Mathey F, Hua YZ, Wang MC. Enantioselective synthesis of indanone spiro-isochromanone derivatives via a dinuclear zinc-catalyzed Michael/transesterification tandem reaction. Org Biomol Chem 2020; 18:3917-3926. [PMID: 32400845 DOI: 10.1039/d0ob00541j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enantioselective Michael/transesterification tandem reaction of α-hydroxy indanones with ortho-ester chalcones was realized using dinuclear zinc catalysts. A series of enantiomerically pure spiro[indanone-2,3'-isochromane-1-one] derivatives were obtained in good yields with excellent stereoselectivities (up to >20 : 1 dr, up to >99% ee). This protocol could be conducted on a gram scale without affecting its stereoselectivities. In addition, the absolute stereochemistry of the products was determined by X-ray crystallographic analysis of 3ac, and a positive nonlinear effect was observed. Finally, a possible catalytic cycle was proposed to explain the origin of the enantioselectivity.
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Affiliation(s)
- Xiao-Chao Yang
- College of Chemistry and Institute of Green catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou, Henan Province 450000, P. R. China.
| | - Meng Xu
- College of Chemistry and Institute of Green catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou, Henan Province 450000, P. R. China.
| | - Jin-Bao Wang
- College of Chemistry and Institute of Green catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou, Henan Province 450000, P. R. China.
| | - Meng-Meng Liu
- College of Chemistry and Institute of Green catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou, Henan Province 450000, P. R. China.
| | - François Mathey
- College of Chemistry and Institute of Green catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou, Henan Province 450000, P. R. China.
| | - Yuan-Zhao Hua
- College of Chemistry and Institute of Green catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou, Henan Province 450000, P. R. China.
| | - Min-Can Wang
- College of Chemistry and Institute of Green catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou, Henan Province 450000, P. R. China.
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7
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Zhang C, Chen S, Ye CX, Harms K, Zhang L, Houk KN, Meggers E. Asymmetric Photocatalysis by Intramolecular Hydrogen-Atom Transfer in Photoexcited Catalyst-Substrate Complex. Angew Chem Int Ed Engl 2019; 58:14462-14466. [PMID: 31469211 DOI: 10.1002/anie.201905647] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/19/2019] [Indexed: 01/07/2023]
Abstract
3-(2-Formylphenyl)-1-pyrazol-1-yl-propenones undergo an asymmetric photorearrangement to benzo[d]cyclopropa[b]pyranones with up to >99 % ee, which is catalyzed by a bis-cyclometalated rhodium catalyst in the presence of visible light. Mechanistic experiments and DFT calculations support a mechanism in which a photoexcited catalyst/substrate complex triggers an intramolecular hydrogen-atom transfer followed by a highly stereocontrolled hetero-Diels-Alder reaction. In this reaction scheme, the rhodium catalyst fulfills multiple functions by 1) enabling visible-light π→π* excitation of the catalyst-bound enone substrate, 2) facilitating the hydrogen-atom transfer, and 3) providing the asymmetric induction for the hetero-Diels-Alder reaction.
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Affiliation(s)
- Chenhao Zhang
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Shuming Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095-1569, USA
| | - Chen-Xi Ye
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Klaus Harms
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Lilu Zhang
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095-1569, USA
| | - Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
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8
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Zhang C, Chen S, Ye C, Harms K, Zhang L, Houk KN, Meggers E. Asymmetric Photocatalysis by Intramolecular Hydrogen‐Atom Transfer in Photoexcited Catalyst–Substrate Complex. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905647] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chenhao Zhang
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Shuming Chen
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095-1569 USA
| | - Chen‐Xi Ye
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Klaus Harms
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Lilu Zhang
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - K. N. Houk
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095-1569 USA
| | - Eric Meggers
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
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9
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Sun M, Wu H, Wu H, Wang Z. An intramolecular Heck reaction of enol ethers involving β-alkoxyl elimination followed by the β-hydride elimination process: access to (Z)-ortho-formyl/keto-cinnamates. Chem Commun (Camb) 2019; 55:14422-14425. [DOI: 10.1039/c9cc08133j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A highly regio- and stereoselective intramolecular Heck reaction of enol ethers involving β-alkoxyl elimination followed by the β-hydride elimination process has been developed.
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Affiliation(s)
- Manman Sun
- Advanced Research Institute and Department of Chemistry
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Haibo Wu
- The Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education)
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Haijian Wu
- Advanced Research Institute and Department of Chemistry
- Taizhou University
- Taizhou 318000
- P. R. China
| | - Zhiming Wang
- Advanced Research Institute and Department of Chemistry
- Taizhou University
- Taizhou 318000
- P. R. China
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10
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Liu Q, Wang J, Li D, Gao GL, Yang C, Gao Y, Xia W. Synthesis of Oxatricyclooctanes via Photoinduced Intramolecular Oxa-[4+2] Cycloaddition of Substituted o-Divinylbenzenes. J Org Chem 2017; 82:7856-7868. [PMID: 28699349 DOI: 10.1021/acs.joc.7b01055] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The photolysis of substituted o-divinylbenzenes promotes a one-step and metal-free conversion to oxatricycles at room temperature. Irradiation o-divinylbenzenes results in an pericyclic reaction to form cyclic o-quinodiemthane intermediates, which subsequently undergo intramolecular oxa-[4+2] cycloaddition to form oxacyclic derivatives.
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Affiliation(s)
- Qiang Liu
- State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology (Shenzhen) , Shenzhen 518055, China
| | - Junlei Wang
- State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology (Shenzhen) , Shenzhen 518055, China
| | - Dazhi Li
- State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology (Shenzhen) , Shenzhen 518055, China
| | - Guo-Lin Gao
- State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology (Shenzhen) , Shenzhen 518055, China
| | - Chao Yang
- State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology (Shenzhen) , Shenzhen 518055, China
| | - Yuan Gao
- School of Chemistry and chemical Engineering, Yantai University , #30 Qingquan RD, Laishan District, Yantai 264005, China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology (Shenzhen) , Shenzhen 518055, China
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11
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Wang J, Zhao Y, Gao H, Gao GL, Yang C, Xia W. Visible-Light-Mediated Dehydrogenative Cross-Coupling: Synthesis of Nonsymmetrical Atropisomeric Biaryls. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700242] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Junlei Wang
- State Key Lab of Urban Water Resource and Environment; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150080 China
| | - Yating Zhao
- State Key Lab of Urban Water Resource and Environment; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150080 China
| | - Han Gao
- State Key Lab of Urban Water Resource and Environment; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150080 China
| | - Guo-Lin Gao
- State Key Lab of Urban Water Resource and Environment; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150080 China
| | - Chao Yang
- State Key Lab of Urban Water Resource and Environment; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150080 China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150080 China
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12
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Synthesis of 2,3-dihydropyrroles by photo rearrangement of Hantzsch 1,4-dihydropyridines with high diastereoselectivity. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.02.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Li B, Fan D, Yang C, Xia W. UV light-mediated difunctionalization of alkenes with CF3SO2Na: synthesis of trifluoromethyl phenanthrene and anthrone derivatives. Org Biomol Chem 2016; 14:5293-7. [DOI: 10.1039/c6ob00912c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal-free and cost-effective protocol for UV light-mediated difunctionalization of alkenes with CF3SO2Na was developed.
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Affiliation(s)
- Bing Li
- State Key Lab of Urban Water Resource and Environment
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- China
| | - Dan Fan
- State Key Lab of Urban Water Resource and Environment
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- China
| | - Chao Yang
- State Key Lab of Urban Water Resource and Environment
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin
- China
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14
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A copper-catalyzed aerobic domino process for the synthesis of isoindolin-1-ylidene derivatives. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.11.071] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Zheng L, Huang H, Yang C, Xia W. UV Light-Mediated Difunctionalization of Alkenes through Aroyl Radical Addition/1,4-/1,2-Aryl Shift Cascade Reactions. Org Lett 2015; 17:1034-7. [DOI: 10.1021/acs.orglett.5b00144] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lewei Zheng
- State Key Lab of Urban Water
Resource and Environment, the Academy of Fundamental and Interdisciplinary
Sciences, Harbin Institute of Technology, Harbin 150080, China
| | - Hongli Huang
- State Key Lab of Urban Water
Resource and Environment, the Academy of Fundamental and Interdisciplinary
Sciences, Harbin Institute of Technology, Harbin 150080, China
| | - Chao Yang
- State Key Lab of Urban Water
Resource and Environment, the Academy of Fundamental and Interdisciplinary
Sciences, Harbin Institute of Technology, Harbin 150080, China
| | - Wujiong Xia
- State Key Lab of Urban Water
Resource and Environment, the Academy of Fundamental and Interdisciplinary
Sciences, Harbin Institute of Technology, Harbin 150080, China
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16
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Liu Q, Meng J, Liu Y, Yang C, Xia W. Synthesis of Benzobicycloheptanones via the Trap of Photogenerated Ketene Methide Intermediate with Olefins. J Org Chem 2014; 79:8143-55. [DOI: 10.1021/jo5013465] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qiang Liu
- State
Key Lab of Urban Water Resource and Environment, the Academy of Fundamental
and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080 China
| | - Jiang Meng
- State
Key Lab of Urban Water Resource and Environment, the Academy of Fundamental
and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080 China
| | - Yang Liu
- State
Key Lab of Urban Water Resource and Environment, the Academy of Fundamental
and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080 China
| | - Chao Yang
- State
Key Lab of Urban Water Resource and Environment, the Academy of Fundamental
and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080 China
| | - Wujiong Xia
- State
Key Lab of Urban Water Resource and Environment, the Academy of Fundamental
and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080 China
- State
Key Lab of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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17
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Zhang T, Wu L, Li X. Rh(III)-Catalyzed Olefination of N-Sulfonyl Imines: Synthesis of Ortho-Olefinated Benzaldehydes. Org Lett 2013; 15:6294-7. [DOI: 10.1021/ol403178a] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Tao Zhang
- College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China, and Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Lamei Wu
- College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China, and Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xingwei Li
- College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China, and Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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18
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Affiliation(s)
- Annette D. Allen
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Thomas T. Tidwell
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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19
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Sun H, Yang C, Gao F, Li Z, Xia W. Oxidative C–C Bond Cleavage of Aldehydes via Visible-Light Photoredox Catalysis. Org Lett 2013; 15:624-7. [DOI: 10.1021/ol303437m] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Hongnan Sun
- State Key Lab of Urban Water Resource and Environment, the Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China, and State Key Lab of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Chao Yang
- State Key Lab of Urban Water Resource and Environment, the Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China, and State Key Lab of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Fei Gao
- State Key Lab of Urban Water Resource and Environment, the Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China, and State Key Lab of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Zhe Li
- State Key Lab of Urban Water Resource and Environment, the Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China, and State Key Lab of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment, the Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China, and State Key Lab of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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20
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Abstract
In this chapter, most of the reported work deals with the photochemistry of carbonyl compounds; however, the photoreactions of other functions, such as the photo-Claisen rearrangement or the photocleavage of cyclic ethers, are also included. In the present volume, time coverage is 2010–2011, and only original research articles are quoted. In general, reviews or purely theoretical calculations are not systematically included. As usually, the material is organized according to established types of reactions (e.g., Norrish I/II, hydrogen abstraction, Paternò-Büchi, photoelimination, photo-Fries/photo-Claisen, etc.). After presenting the basic photochemical aspects, more specific findings are reported. They include synthetic applications, stereoselectivity, and biological or technological implications. Next, the attention is focused on photochemical reactions in anisotropic media, including (micro)heterogeneous or supramolecular systems, solid matrixes or fully organized crystals. Finally, mechanistic studies based on direct experimental evidence are highlighted, especially when transient absorption spectroscopy or related ultrafast detection are employed.
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Affiliation(s)
- M. Consuelo Jiménez
- Departamento de Química, Instituto de Tecnología Química UPV-CSIC Universidad Politécnica de Valencia camino de Vera s/n, E-46022 Valencia Spain
| | - Miguel A. Miranda
- Departamento de Química, Instituto de Tecnología Química UPV-CSIC Universidad Politécnica de Valencia camino de Vera s/n, E-46022 Valencia Spain
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21
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Ma M, Feng W, Guo F, Yang C, Xia W. Photochemical studies on acyclic alkyl aromatic ketones in the solid state: asymmetric induction and increased chemoselectivity. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.08.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Zhao G, Yang C, Guo L, Sun H, Lin R, Xia W. Reactivity insight into reductive coupling and aldol cyclization of chalcones by visible light photocatalysis. J Org Chem 2012; 77:6302-6. [PMID: 22731518 DOI: 10.1021/jo300796j] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The reductive coupling and cyclization of chalcones to generate cyclopentanol derivatives in up to 84% yield by visible light photoredox catalysis is described. This reaction involves radical anion homocoupling, monoprotonation, and intramolecular cyclization cascade.
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Affiliation(s)
- Guolei Zhao
- State Key Lab of Urban Water Resource and Environment, Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China
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23
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Conversion of aryl CO to CC bond through a UV light activation/TEMPO oxidation cascade reaction. J Photochem Photobiol A Chem 2012. [DOI: 10.1016/j.jphotochem.2012.02.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Padala K, Jeganmohan M. Highly Regio- and Stereoselective Ruthenium(II)-Catalyzed Direct ortho-Alkenylation of Aromatic and Heteroaromatic Aldehydes with Activated Alkenes under Open Atmosphere. Org Lett 2012; 14:1134-7. [DOI: 10.1021/ol3000684] [Citation(s) in RCA: 186] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Kishor Padala
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021, India
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021, India
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25
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Zhao G, Yang C, Sun H, Lin R, Xia W. (+)-Camphor Derivative Induced Asymmetric [2 + 2] Photoaddition Reaction. Org Lett 2012; 14:776-9. [DOI: 10.1021/ol203314y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guolei Zhao
- State Key Lab of Urban Water Resource and Environment, the Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China, State Key Lab of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Chao Yang
- State Key Lab of Urban Water Resource and Environment, the Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China, State Key Lab of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Hongnan Sun
- State Key Lab of Urban Water Resource and Environment, the Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China, State Key Lab of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Run Lin
- State Key Lab of Urban Water Resource and Environment, the Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China, State Key Lab of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment, the Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China, State Key Lab of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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26
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Zhao G, Yang C, Guo L, Sun H, Chen C, Xia W. Visible light-induced oxidative coupling reaction: easy access to Mannich-type products. Chem Commun (Camb) 2012; 48:2337-9. [PMID: 22252544 DOI: 10.1039/c2cc17130a] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An efficient methodology for the functionalization of sp(3) C-H bond adjacent to nitrogen has been developed utilizing visible light-induced photoredox catalysis. Through optimization of solvent and light source, the reaction can be rapidly achieved to provide the desired product under mild reaction conditions.
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Affiliation(s)
- Guolei Zhao
- State Key Lab of Urban Water Resource and Environment, The Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China
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Shao Y, Yang C, Gui W, Liu Y, Xia W. Photochemical studies on aromatic γ,δ-epoxy ketones: efficient synthesis of benzocyclobutanones and indanones. Chem Commun (Camb) 2012; 48:3560-2. [DOI: 10.1039/c2cc17960a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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