401
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Saito K, Kajiwara Y, Akiyama T. Chiral Copper(II) Phosphate Catalyzed Enantioselective Synthesis of Isochromene Derivatives by Sequential Intramolecular Cyclization and Asymmetric Transfer Hydrogenation ofo-Alkynylacetophenones. Angew Chem Int Ed Engl 2013; 52:13284-8. [DOI: 10.1002/anie.201308303] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Indexed: 11/11/2022]
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402
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Chiral Copper(II) Phosphate Catalyzed Enantioselective Synthesis of Isochromene Derivatives by Sequential Intramolecular Cyclization and Asymmetric Transfer Hydrogenation ofo-Alkynylacetophenones. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308303] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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403
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Wang Z, Law WK, Sun J. Chiral Phosphoric Acid Catalyzed Enantioselective Desymmetrization of meso-Epoxides by Thiols. Org Lett 2013; 15:5964-6. [DOI: 10.1021/ol402797v] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Zhaobin Wang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Wai Kit Law
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Jianwei Sun
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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404
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Roszkowski P, Błachut D, Maurin JK, Woźnica M, Frelek J, Pluciński F, Czarnocki Z. Atropisomerism in 3,4,5-Tri-(2-methoxyphenyl)-2,6-lutidine. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301378] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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405
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Min C, Mittal N, Sun DX, Seidel D. Conjugate-Base-Stabilized Brønsted Acids as Asymmetric Catalysts: Enantioselective Povarov Reactions with Secondary Aromatic Amines. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308196] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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406
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Min C, Mittal N, Sun DX, Seidel D. Conjugate-Base-Stabilized Brønsted Acids as Asymmetric Catalysts: Enantioselective Povarov Reactions with Secondary Aromatic Amines. Angew Chem Int Ed Engl 2013; 52:14084-8. [DOI: 10.1002/anie.201308196] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Indexed: 01/08/2023]
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407
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Khan IA, Saxena AK. Metal-Free, Mild, Nonepimerizing, Chemo- and Enantio- or Diastereoselective N-Alkylation of Amines by Alcohols via Oxidation/Imine–Iminium Formation/Reductive Amination: A Pragmatic Synthesis of Octahydropyrazinopyridoindoles and Higher Ring Analogues. J Org Chem 2013; 78:11656-69. [DOI: 10.1021/jo4012249] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Imran A. Khan
- Laboratory
No. 101, Medicinal
and Process Chemistry Division (MPC), CSIR-Central Drug Research Institute (CDRI), Chattar
Manzil Palace, Lucknow, Uttar Pradesh 226-001, India
| | - Anil K. Saxena
- Laboratory
No. 101, Medicinal
and Process Chemistry Division (MPC), CSIR-Central Drug Research Institute (CDRI), Chattar
Manzil Palace, Lucknow, Uttar Pradesh 226-001, India
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408
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Huang D, Li X, Xu F, Li L, Lin X. Highly Enantioselective Synthesis of Dihydroquinazolinones Catalyzed by SPINOL-Phosphoric Acids. ACS Catal 2013. [DOI: 10.1021/cs400591u] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Dan Huang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Xuejian Li
- Department of Chemistry, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Fangxi Xu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Luhang Li
- Department of Chemistry, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Xufeng Lin
- Department of Chemistry, Zhejiang University, Hangzhou 310027, People’s Republic of China
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409
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Kaupmees K, Tolstoluzhsky N, Raja S, Rueping M, Leito I. On the Acidity and Reactivity of Highly Effective Chiral Brønsted Acid Catalysts: Establishment of an Acidity Scale. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303605] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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410
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Kaupmees K, Tolstoluzhsky N, Raja S, Rueping M, Leito I. On the Acidity and Reactivity of Highly Effective Chiral Brønsted Acid Catalysts: Establishment of an Acidity Scale. Angew Chem Int Ed Engl 2013; 52:11569-72. [DOI: 10.1002/anie.201303605] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2013] [Revised: 08/09/2013] [Indexed: 11/09/2022]
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411
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Lu C, Su X, Floreancig PE. Stereocontrolled cyanohydrin ether synthesis through chiral Brønsted acid-mediated vinyl ether hydrocyanation. J Org Chem 2013; 78:9366-76. [PMID: 23968162 DOI: 10.1021/jo4016002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Vinyl ethers can be protonated to generate oxocarbenium ions that react with Me3SiCN to form cyanohydrin alkyl ethers. Reactions that form racemic products proceed efficiently upon conversion of the vinyl ether to an α-chloro ether prior to cyanide addition in a pathway that proceeds through Brønsted acid-mediated chloride ionization. Enantiomerically enriched products can be accessed by directly protonating the vinyl ether with a chiral Brønsted acid to form a chiral ion pair. Me3SiCN acts as the nucleophile and PhOH serves as a stoichiometric proton source in a rare example of asymmetric bimolecular nucleophilic addition into an oxocarbenium ion. Computational studies have provided a model for the interaction between the catalyst and the oxocarbenium ion.
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Affiliation(s)
- Chunliang Lu
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
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412
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413
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He L, Laurent G, Retailleau P, Folléas B, Brayer JL, Masson G. Highly Enantioselective Aza-Diels-Alder Reaction of 1-Azadienes with Enecarbamates Catalyzed by Chiral Phosphoric Acids. Angew Chem Int Ed Engl 2013; 52:11088-91. [DOI: 10.1002/anie.201304969] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 07/05/2013] [Indexed: 12/14/2022]
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414
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He L, Laurent G, Retailleau P, Folléas B, Brayer JL, Masson G. Highly Enantioselective Aza-Diels-Alder Reaction of 1-Azadienes with Enecarbamates Catalyzed by Chiral Phosphoric Acids. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304969] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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415
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Lv F, Liu S, Hu W. Recent Advances in the Use of Chiral Brønsted Acids as Cooperative Catalysts in Cascade and Multicomponent Reactions. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300097] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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416
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Lv J, Zhang L, Luo S, Cheng JP. Switchable Diastereoselectivity in Enantioselective [4+2] Cycloadditions with Simple Olefins by Asymmetric Binary Acid Catalysis. Angew Chem Int Ed Engl 2013; 52:9786-90. [DOI: 10.1002/anie.201304561] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Indexed: 01/27/2023]
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417
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Lv J, Zhang L, Luo S, Cheng JP. Switchable Diastereoselectivity in Enantioselective [4+2] Cycloadditions with Simple Olefins by Asymmetric Binary Acid Catalysis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304561] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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418
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Saito K, Shibata Y, Yamanaka M, Akiyama T. Chiral Phosphoric Acid-Catalyzed Oxidative Kinetic Resolution of Indolines Based on Transfer Hydrogenation to Imines. J Am Chem Soc 2013; 135:11740-3. [DOI: 10.1021/ja406004q] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Kodai Saito
- Department of Chemistry, Faculty
of Science, Gakushuin University, 1-5-1
Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Yukihiro Shibata
- Department of Chemistry and
Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku,
Tokyo 171-8501, Japan
| | - Masahiro Yamanaka
- Department of Chemistry and
Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku,
Tokyo 171-8501, Japan
| | - Takahiko Akiyama
- Department of Chemistry, Faculty
of Science, Gakushuin University, 1-5-1
Mejiro, Toshima-ku, Tokyo 171-8588, Japan
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419
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Naredla RR, Klumpp DA. Contemporary Carbocation Chemistry: Applications in Organic Synthesis. Chem Rev 2013; 113:6905-48. [DOI: 10.1021/cr4001385] [Citation(s) in RCA: 263] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Rajasekhar Reddy Naredla
- Department of Chemistry
and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115,
United States
| | - Douglas A. Klumpp
- Department of Chemistry
and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115,
United States
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420
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Yang C, Xue XS, Jin JL, Li X, Cheng JP. Theoretical Study on the Acidities of Chiral Phosphoric Acids in Dimethyl Sulfoxide: Hints for Organocatalysis. J Org Chem 2013; 78:7076-85. [DOI: 10.1021/jo400915f] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Chen Yang
- State
Key Laboratory of Elemento-organic Chemistry and ‡Computational Center of Molecular
Science, Department of Chemistry, Nankai University, Tianjin 300071
| | - Xiao-Song Xue
- State
Key Laboratory of Elemento-organic Chemistry and ‡Computational Center of Molecular
Science, Department of Chemistry, Nankai University, Tianjin 300071
| | - Jia-Lu Jin
- State
Key Laboratory of Elemento-organic Chemistry and ‡Computational Center of Molecular
Science, Department of Chemistry, Nankai University, Tianjin 300071
| | - Xin Li
- State
Key Laboratory of Elemento-organic Chemistry and ‡Computational Center of Molecular
Science, Department of Chemistry, Nankai University, Tianjin 300071
| | - Jin-Pei Cheng
- State
Key Laboratory of Elemento-organic Chemistry and ‡Computational Center of Molecular
Science, Department of Chemistry, Nankai University, Tianjin 300071
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421
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Borovika A, Nagorny P. Chiral Brønsted acid-catalyzed enantioselective ionic [2+4] cycloadditions. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.03.086] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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422
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Aillaud I, Barber DM, Thompson AL, Dixon DJ. Enantioselective Michael addition/iminium ion cyclization cascades of tryptamine-derived ureas. Org Lett 2013; 15:2946-9. [PMID: 23721179 PMCID: PMC3931331 DOI: 10.1021/ol401039h] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Indexed: 01/17/2023]
Abstract
A Michael addition/iminium ion cyclization cascade of enones with tryptamine-derived ureas under BINOL phosphoric acid (BPA) catalysis is reported. The cascade reaction tolerates a wide variety of easily synthesized tryptamine-derived ureas, including those bearing substituents on the distal nitrogen atom of the urea moiety, affording polyheterocyclic products in good yields and good to excellent enantioselectivities.
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Affiliation(s)
- Isabelle Aillaud
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - David M. Barber
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Amber L. Thompson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Darren J. Dixon
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
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423
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Das A, Volla CMR, Atodiresei I, Bettray W, Rueping M. Asymmetric Ion Pair Catalysis of 6π Electrocyclizations: Brønsted Acid Catalyzed Enantioselective Synthesis of Optically Active 1,4-Dihydropyridazines. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301638] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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424
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Das A, Volla CMR, Atodiresei I, Bettray W, Rueping M. Asymmetric Ion Pair Catalysis of 6π Electrocyclizations: Brønsted Acid Catalyzed Enantioselective Synthesis of Optically Active 1,4-Dihydropyridazines. Angew Chem Int Ed Engl 2013; 52:8008-11. [DOI: 10.1002/anie.201301638] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 05/06/2013] [Indexed: 11/08/2022]
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425
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Hsiao CC, Liao HH, Sugiono E, Atodiresei I, Rueping M. Shedding Light on Organocatalysis-Light-Assisted Asymmetric Ion-Pair Catalysis for the Enantioselective Hydrogenation of Pyrylium Ions. Chemistry 2013; 19:9775-9. [DOI: 10.1002/chem.201300766] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 02/26/2013] [Indexed: 11/08/2022]
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426
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Gratzer K, Gururaja GN, Waser M. Towards Tartaric-Acid-Derived Asymmetric Organocatalysts. European J Org Chem 2013; 2013:4471-4482. [PMID: 24194674 PMCID: PMC3806311 DOI: 10.1002/ejoc.201201675] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Indexed: 11/22/2022]
Abstract
Tartaric acid is one of the most prominent naturally occurring chiral compounds. Whereas its application in the production of chiral ligands for metal-catalysed reactions has been exhaustively investigated, its potential to provide new organocatalysts has been less extensively explored. Nevertheless, some impressive results, such as the use of TADDOLs as chiral H-bonding catalysts or of tartrate-derived asymmetric quaternary ammonium salt catalysts, have been reported over the last decade. The goal of this article is to provide a representative overview of the potential and the limitations of tartaric acid or TADDOLs in the creation of new organocatalysts and to highlight some of the most spectacular applications of these catalysts, as well as to summarize case studies in which other classes of chiral backbones were better suited.
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Affiliation(s)
- Katharina Gratzer
- Institute of Organic Chemistry, Johannes Kepler University Linz Altenbergerstraße 69, 4040 Linz, Austria, http://www.orc.jku.at/mwaser
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427
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Zhou JQ, Sheng WJ, Jia JH, Ye Q, Gao JR, Jia YX. Chiral phosphoric acid catalyzed asymmetric hydrogenolysis of racemic 3-aryl-3-hydroxyisoindolin-1-ones. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.03.138] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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428
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Wang Z, Chen Z, Sun J. Catalytic Enantioselective Intermolecular Desymmetrization of 3-Substituted Oxetanes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300188] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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429
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Wang Z, Chen Z, Sun J. Catalytic Enantioselective Intermolecular Desymmetrization of 3-Substituted Oxetanes. Angew Chem Int Ed Engl 2013; 52:6685-8. [DOI: 10.1002/anie.201300188] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Indexed: 11/06/2022]
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430
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Chen Z, Wang Z, Sun J. Catalytic Enantioselective Synthesis of Tetrahydroisoquinolines and Their Analogues Bearing a C4 Stereocenter: Formal Synthesis of (+)-(8S,13R)-Cyclocelabenzine. Chemistry 2013; 19:8426-30. [DOI: 10.1002/chem.201301065] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Indexed: 11/11/2022]
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431
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Ambrogi M, Ciogli A, Mancinelli M, Ranieri S, Mazzanti A. Atropisomers of Arylmaleimides: Stereodynamics and Absolute Configuration. J Org Chem 2013; 78:3709-19. [DOI: 10.1021/jo400200v] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Martina Ambrogi
- Department of Industrial Chemistry
“Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 - Bologna, Italy
| | - Alessia Ciogli
- Dipartimento di Chimica e Tecnologie
del farmaco, Università di Roma “La Sapienza”, P.le A.Moro 5, 00185 - Roma, Italy
| | - Michele Mancinelli
- Department of Industrial Chemistry
“Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 - Bologna, Italy
| | - Silvia Ranieri
- Department of Industrial Chemistry
“Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 - Bologna, Italy
| | - Andrea Mazzanti
- Department of Industrial Chemistry
“Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 - Bologna, Italy
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432
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Tsai AS, Chen M, Roush WR. Chiral Brønsted acid catalyzed enantioselective synthesis of anti-homopropargyl alcohols via kinetic resolution-aldehyde allenylboration using racemic allenylboronates. Org Lett 2013; 15:1568-71. [PMID: 23484801 PMCID: PMC3640598 DOI: 10.1021/ol4003459] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A chiral phosphoric acid catalyzed kinetic resolution/allenylboration of racemic allenylboronates with aldehydes is described. Allenylboration of aldehydes with 2.8 equiv of allenylboronate (±)-1 in the presence of 10 mol % of catalyst (R)-2 provided anti-homopropargyl alcohols 3 in 83-95% yield with 9:1 to 20:1 diastereoselectivity and 73-95% ee. The catalyst enables the kinetic resolution of the racemic allenylboronate (±)-1 to set the methyl stereocenter and biases the facial attack of the aldehyde to set the stereochemistry of the hydroxyl group in 3.
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Affiliation(s)
- Andy S. Tsai
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458, United States
| | - Ming Chen
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458, United States
| | - William R. Roush
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458, United States
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433
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Shibata Y, Yamanaka M. DFT Study of the Mechanism and Origin of Enantioselectivity in Chiral BINOL-Phosphoric Acid Catalyzed Transfer Hydrogenation of Ketimine and α-Imino Ester Using Benzothiazoline. J Org Chem 2013; 78:3731-6. [DOI: 10.1021/jo4002195] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yukihiro Shibata
- Department of Chemistry and Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Masahiro Yamanaka
- Department of Chemistry and Research Center for Smart Molecules, Faculty of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
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434
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Wang PS, Li KN, Zhou XL, Wu X, Han ZY, Guo R, Gong LZ. Enantioselective Relay Catalytic Cascade Intramolecular Hydrosiloxylation and Mukaiyama Aldol Reaction. Chemistry 2013; 19:6234-8. [DOI: 10.1002/chem.201300702] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Indexed: 11/11/2022]
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435
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Courant T, Kumarn S, He L, Retailleau P, Masson G. Chiral Phosphoric Acid-Catalyzed Enantioselective Aza-Friedel-Crafts Alkylation of Indoles with γ-Hydroxy-γ-lactams. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201201008] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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436
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Qabaja G, Wilent JE, Benavides AR, Bullard GE, Petersen KS. Facile Synthesis of Versatile Enantioenriched α-Substituted Hydroxy Esters through a Brønsted Acid Catalyzed Kinetic Resolution. Org Lett 2013; 15:1266-9. [DOI: 10.1021/ol400207t] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ghassan Qabaja
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina 27402, United States
| | - Jennifer E. Wilent
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina 27402, United States
| | - Amanda R. Benavides
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina 27402, United States
| | - George E. Bullard
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina 27402, United States
| | - Kimberly S. Petersen
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina 27402, United States
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437
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Mori K, Ichikawa Y, Kobayashi M, Shibata Y, Yamanaka M, Akiyama T. Enantioselective Synthesis of Multisubstituted Biaryl Skeleton by Chiral Phosphoric Acid Catalyzed Desymmetrization/Kinetic Resolution Sequence. J Am Chem Soc 2013; 135:3964-70. [DOI: 10.1021/ja311902f] [Citation(s) in RCA: 243] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Keiji Mori
- Department of Chemistry, Faculty
of Science, Gakushuin University, 1-5-1
Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Yuki Ichikawa
- Department of Chemistry, Faculty
of Science, Gakushuin University, 1-5-1
Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Manato Kobayashi
- Department of Chemistry, Faculty
of Science, Gakushuin University, 1-5-1
Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Yukihiro Shibata
- Department of Chemistry, Faculty
of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro,
Toshima-ku, Tokyo 171-8501, Japan
| | - Masahiro Yamanaka
- Department of Chemistry, Faculty
of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro,
Toshima-ku, Tokyo 171-8501, Japan
| | - Takahiko Akiyama
- Department of Chemistry, Faculty
of Science, Gakushuin University, 1-5-1
Mejiro, Toshima-ku, Tokyo 171-8588, Japan
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438
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Ávila EP, de Mello AC, Diniz R, Amarante GW. Brønsted Acid Catalyzed Highly Diastereoselective Michael-Type Addition of Azlactones to Enones. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300076] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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439
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Wang H, Jain P, Antilla JC, Houk KN. Origins of stereoselectivities in chiral phosphoric acid catalyzed allylborations and propargylations of aldehydes. J Org Chem 2013; 78:1208-15. [PMID: 23298338 PMCID: PMC3568159 DOI: 10.1021/jo302787m] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The chiral BINOL-phosphoric acid catalyzed allylboration and propargylation reactions are studied with density functional theory (B3LYP and B3LYP-D3). Two different models were recently proposed for these reactions by Goodman and our group, respectively. In Goodman's model for allylborations, the catalyst interacts with the boronate pseudoaxial oxygen. By contrast, our model for propargylations predicts that the catalyst interacts with the boronate pseudoequatorial oxygen. In both models, the phosphoric acid stabilizes the transition state by forming a strong hydrogen bond with the oxygen of the boronate and is oriented by a formyl hydrogen bond (Goodman model) and by other electrostatic attractions in our model. Both of these models have now been reinvestigated for both allylborations and propargylations. For the most effective catalyst for these reactions, the lowest energy transition state corresponds to Goodman's axial model, while the best transition state leading to the minor enantiomer involves the equatorial model. The high enantioselectivity observed with only the bulkiest catalyst arises from the steric interactions between the substrates and the bulky groups on the catalyst, and the resulting necessity for distortion of the catalyst in the disfavored transition state.
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Affiliation(s)
- Hao Wang
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569
| | - Pankaj Jain
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620
| | - Jon C. Antilla
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569
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440
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Tantawy W, Hashem A, Yousif N, Flefel E. The water–boryl radical as a proton-coupled electron transfer reagent for carbon dioxide, formic acid, and formaldehyde — Theoretical approach. CAN J CHEM 2013. [DOI: 10.1139/cjc-2012-0303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The thermochemistry of the hydrogen atom transfer reactions from the H2O–BX2 radical system (X = H, CH3, NH2, OH, F) to carbon dioxide, formic acid, and (or) formaldehyde, which produce hydroxyformyl, dihydroxymethyl, and hydroxymethyl radicals, respectively, were investigated theoretically at ROMP2/6–311+G(3DF,2P)//UB3LYP/6–31G(D) and UG3(MP2)-RAD levels of theory. Surprisingly, in the cases of a strong Lewis acid (X = H, CH3, F), the spin transfer process from the water–boryl radical to the carbonyl compounds was barrier-free and associated with a dramatic reduction in the B–H bond dissociation energy (BDE) relative to that of isolated water–borane complexes. Examining the coordinates of these reactions revealed that the entire hydrogen atom transfer process is governed by the proton-coupled electron transfer (PCET) mechanism. Hence, the elucidated mechanism has been applied in the cases of weak Lewis acids (X = NH2, OH), and the variation in the accompanied activation energy was attributed to the stereoelectronic effect interplaying in CO2 and HCOOH compared with HCHO. We ascribed the overall mechanism as a SA-induced five-center cyclic PCET, in which the proton transfers across the so-called complexation-induced hydrogen bond (CIHB) channel, while the SOMOB–LUMOC=O′ interaction is responsible for the electron migration process. Owing to previous reports that interrelate the hydrogen-bonding and the rate of proton-coupled electron-transfer reactions, we postulated that “the rate of the PCET reaction is expected to be promoted by the covalency of the hydrogen bond, and any factor that enhances this covalency could be considered an activator of the PCET process.” This postulate could be considered a good rationale for the lack of a barrier associated with the hydrogen atom transfer from the water-boryl radical system to the carbonyl compounds. Light has been shed on the water–boryl radical reagent from the thermodynamic perspective.
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Affiliation(s)
- Waled Tantawy
- Photochemistry Department, National Research Center, Dokki, Giza, Egypt
| | - Ahmed Hashem
- Chemistry Department, Faculty of Science, Ain Shams University, Abbassia, Cairo, Egypt
| | - Nabil Yousif
- Photochemistry Department, National Research Center, Dokki, Giza, Egypt
| | - Eman Flefel
- Photochemistry Department, National Research Center, Dokki, Giza, Egypt
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441
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Chen Z, Wang B, Wang Z, Zhu G, Sun J. Complex Bioactive Alkaloid-Type Polycycles through Efficient Catalytic Asymmetric Multicomponent Aza-Diels-Alder Reaction of Indoles with Oxetane as Directing Group. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201206481] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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442
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Chen Z, Wang B, Wang Z, Zhu G, Sun J. Complex Bioactive Alkaloid-Type Polycycles through Efficient Catalytic Asymmetric Multicomponent Aza-Diels-Alder Reaction of Indoles with Oxetane as Directing Group. Angew Chem Int Ed Engl 2013; 52:2027-31. [DOI: 10.1002/anie.201206481] [Citation(s) in RCA: 181] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2012] [Revised: 10/09/2012] [Indexed: 12/22/2022]
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443
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Caruana L, Fochi M, Ranieri S, Mazzanti A, Bernardi L. Catalytic highly enantioselective vinylogous Povarov reaction. Chem Commun (Camb) 2013; 49:880-2. [DOI: 10.1039/c2cc38002a] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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444
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Huang D, Xu F, Chen T, Wang Y, Lin X. Highly enantioselective three-component Povarov reaction catalyzed by SPINOL-phosphoric acids. RSC Adv 2013. [DOI: 10.1039/c2ra22796g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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445
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Della Sala G. Studies on the true catalyst in the phosphate-promoted desymmetrization of meso-aziridines with silylated nucleophiles. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.10.068] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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446
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Li X, Zhao Y, Qu H, Mao Z, Lin X. Organocatalytic asymmetric multicomponent reactions of aromatic aldehydes and anilines with β-ketoesters: facile and atom-economical access to chiral tetrahydropyridines. Chem Commun (Camb) 2013; 49:1401-3. [DOI: 10.1039/c2cc38349g] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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447
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Cai Q, Liang XW, Wang SG, You SL. An olefin isomerization/asymmetric Pictet–Spengler cascade via sequential catalysis of ruthenium alkylidene and chiral phosphoric acid. Org Biomol Chem 2013; 11:1602-5. [DOI: 10.1039/c3ob00072a] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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448
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Lv J, Luo S. Asymmetric binary acid catalysis: chiral phosphoric acid as dual ligand and acid. Chem Commun (Camb) 2013; 49:847-58. [DOI: 10.1039/c2cc34288j] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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449
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Murai T, Maekawa Y, Monzaki M, Ando T, Maruyama T. Anti-Markovnikov hydrophosphoroselenoylation of alkenes using phosphorodiselenoic acid esters leading to the formation of phosphonoselenoic acid esters. Chem Commun (Camb) 2013; 49:9675-7. [DOI: 10.1039/c3cc45912h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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450
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Liao HH, Hsiao CC, Sugiono E, Rueping M. Shedding light on Brønsted acid catalysis – a photocyclization–reduction reaction for the asymmetric synthesis of tetrahydroquinolines from aminochalcones in batch and flow. Chem Commun (Camb) 2013; 49:7953-5. [DOI: 10.1039/c3cc43996h] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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