1
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Giordano MT, Kitzinger KM, de Jesús Cruz P, Liu S, Johnson JS. Catalytic, Asymmetric Michael-Aldol Annulations via a Stereodivergent/Stereoconvergent Path Operating under Curtin-Hammett Control. J Am Chem Soc 2023; 145:12370-12376. [PMID: 37216269 PMCID: PMC10360212 DOI: 10.1021/jacs.3c03373] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A bifunctional iminophosphorane (BIMP)-catalyzed method for the synthesis of densely functionalized cyclohexanols establishes five contiguous stereocenters (diastereoselection up to >20:1, enantioselectivity up to >99:1) in a Michael/aldol domino reaction between trisubstituted electrophilic alkenes and γ-nitroketones. Mechanistic studies suggest a scenario in which stereoconvergency is achieved by kinetically controlled cyclization after the initial diastereodivergent Michael addition. Diastereoconvergency during cyclization is shown to result from Curtin-Hammett kinetics, a finding that contrasts the crystallization-driven stereoconvergency previously reported in similar systems. Despite the change in the stereocontrol mechanism, the operational attributes remain attractive, with the crystalline products typically isolated in analytically pure form upon filtration of the reaction mixture.
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Affiliation(s)
- Mitchell T Giordano
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Katelyn M Kitzinger
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Pedro de Jesús Cruz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Shubin Liu
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
- Research Computing Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Jeffrey S Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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2
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Sengupta S, Pabbaraja S, Mehta G. Domino Reactions through Recursive Anionic Cascades: The Advantageous Use of Nitronates. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Srihari Pabbaraja
- Department of Organic Synthesis and Process Chemistry CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
| | - Goverdhan Mehta
- School of Chemistry University of Hyderabad Hyderabad 500046 India
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3
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Ballini R, Palmieri A, Petrini M. Catalysts’ evolution in the asymmetric conjugate addition of nitroalkanes to electron-poor alkenes. Org Chem Front 2022. [DOI: 10.1039/d2qo01341j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review provides a journey of the catalyst usage for the enantioselective conjugate addition of nitroalkanes to electron-poor olefins from the early attempts to the latest achievements. Selected applications are also reported.
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Affiliation(s)
- Roberto Ballini
- School of Science and Technology, Chemistry Division, University of Camerino, CHIP, Via Madonna delle Carceri, 62032 Camerino, MC, Italy
| | - Alessandro Palmieri
- School of Science and Technology, Chemistry Division, University of Camerino, CHIP, Via Madonna delle Carceri, 62032 Camerino, MC, Italy
| | - Marino Petrini
- School of Science and Technology, Chemistry Division, University of Camerino, CHIP, Via Madonna delle Carceri, 62032 Camerino, MC, Italy
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4
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Šebesta R, Veverková E, Molnosiová P. Asymmetric Sequential Michael Addition and Cyclization Reactions of 2-(2-Nitrovinyl)phenols Catalyzed by Bifunctional Amino-Squaramides. SYNOPEN 2021. [DOI: 10.1055/s-0040-1719843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
AbstractIn this work, we describe the Michael addition–cyclization reaction of 2-(2-nitrovinyl)phenol with two different reactive Michael donors, which lead to chiral benzopyran derivatives. Specifically, bifunctional amino-squaramides with one or two chiral units in the side chains were evaluated as catalysts in these transformations. Furthermore, the utility of selected green solvents as reaction media for these processes was also tested. The best result was achieved with methyl-cyclopentanone-2-carboxylate as the Michael donor in ethyl (–)-l-lactate with quinine-based amino-squaramide as catalyst (yield 72%, dr >99:1, ee 99%).
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5
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Synthesis of a novel acidic ionic liquid catalyst and its application for preparation of pyridines via a cooperative vinylogous anomeric-based oxidation. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-020-04361-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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6
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Thiourea–Tertiary Amine Promoted Cascade Catalysis: A Tool for Complexity Generation. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001114] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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7
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Lu X, Zhang Y, Wang Y, Chen Y, Chen W, Zhan R, Zhao JC, Huang H. Asymmetric Catalysis Using Modularly Designed Organocatalysts: Synthesis of Fused Tricyclic Pyrano‐Pyrano[2,3‐
c
]pyrrol Derivatives. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900254] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xue Lu
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine)Ministry of Education Guangzhou 510006 People's Republic of China
| | - Yili Zhang
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine)Ministry of Education Guangzhou 510006 People's Republic of China
| | - Yichen Wang
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine)Ministry of Education Guangzhou 510006 People's Republic of China
| | - Yuzhen Chen
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine)Ministry of Education Guangzhou 510006 People's Republic of China
| | - Weiwen Chen
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine)Ministry of Education Guangzhou 510006 People's Republic of China
| | - Ruoting Zhan
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine)Ministry of Education Guangzhou 510006 People's Republic of China
| | - John C.‐G. Zhao
- Department of ChemistryUniversity of Texas at San Antonio One UTSA Circle San Antonio, Texas 78249-0698 USA
| | - Huicai Huang
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine)Ministry of Education Guangzhou 510006 People's Republic of China
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8
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Liu J, Zhou Z, Li Y, Ye W, Yao J, Wang C. One-Pot Multicomponent Synthesis of Highly Functionalised Piperidines from Aromatic Aldehydes, Cyanoacetates, Nitromethane and Ammonium Acetate. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/174751913x13814236405771] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Juanjuan Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P.R. China
| | - Zhengquan Zhou
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P.R. China
| | - Yan Li
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P.R. China
| | - Weijian Ye
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P.R. China
| | - Juan Yao
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P.R. China
| | - Cunde Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P.R. China
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9
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Yadav A, Srivastava A, Mobin SM, Samanta S. L-Proline-Catalyzed One-Pot Diastereoselective Synthesis of Cyclohexanols from β-Aryl-γ-nitroketones and α,β-Unsaturated Aldehydes: A New Route to 2,3,4,6-Tetrasubstituted Phenols. ChemistrySelect 2019. [DOI: 10.1002/slct.201803521] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Anubha Yadav
- Discipline of Chemistry; Indian Institute of Technology Indore Simrol, Indore; 453552 Madhya Pradesh India
| | - Anvita Srivastava
- Nanhi Pari Seemant Engineering Institute Pithoragarh; Uttarakhand 262501 India
| | - Shaikh M. Mobin
- Discipline of Chemistry; Indian Institute of Technology Indore Simrol, Indore; 453552 Madhya Pradesh India
| | - Sampak Samanta
- Discipline of Chemistry; Indian Institute of Technology Indore Simrol, Indore; 453552 Madhya Pradesh India
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10
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Horwitz MA, Fulton JL, Johnson JS. Enantio- and Diastereoselective Organocatalytic Conjugate Additions of Nitroalkanes to Enone Diesters. Org Lett 2018; 19:5783-5785. [PMID: 29035548 DOI: 10.1021/acs.orglett.7b02735] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Enantio- and diastereoselective conjugate addition reactions between nitroethane or nitropropane and enone diesters are reported. A bifunctional triaryliminophosphorane catalyzed the addition reaction with consistently excellent stereoselectivities and yields across a wide range of substrates. By the use of the gem-diester functional handle present in the adducts, local desymmetrization via diastereotopic group discrimination was demonstrated, and a polyfunctionalized lactam with three contiguous stereocenters was synthesized.
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Affiliation(s)
- Matthew A Horwitz
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - Jennifer L Fulton
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - Jeffrey S Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
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11
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Chanda T, Zhao JC. Recent Progress in Organocatalytic Asymmetric Domino Transformations. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701059] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tanmoy Chanda
- Department of Chemistry University of Texas at San Antonio One UTSA Circle San Antonio TX 78249-0698 USA
| | - John C.‐G. Zhao
- Department of Chemistry University of Texas at San Antonio One UTSA Circle San Antonio TX 78249-0698 USA
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12
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Koutoulogenis G, Kaplaneris N, Kokotos CG. (Thio)urea-mediated synthesis of functionalized six-membered rings with multiple chiral centers. Beilstein J Org Chem 2016; 12:462-95. [PMID: 27340441 PMCID: PMC4902000 DOI: 10.3762/bjoc.12.48] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 02/23/2016] [Indexed: 12/25/2022] Open
Abstract
Organocatalysis, now running its second decade of life, is being considered one of the main tools a synthetic chemist has to perform asymmetric catalysis. In this review the synthesis of six-membered rings, that contain multiple chiral centers, either by a ring closing process or by a functionalization reaction on an already existing six-membered ring, utilizing bifunctional (thio)ureas will be summarized. Initially, the use of primary amine-thioureas as organocatalysts for the above transformation is being discussed, followed by the examples employing secondary amine-thioureas. Finally, the use of tertiary amine-thioureas and miscellaneous examples are presented.
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Affiliation(s)
- Giorgos Koutoulogenis
- Department of Chemistry, National and Kapodestrian University of Athens, Panepistimiopolis 15771, Athens, Greece
| | - Nikolaos Kaplaneris
- Department of Chemistry, National and Kapodestrian University of Athens, Panepistimiopolis 15771, Athens, Greece
| | - Christoforos G Kokotos
- Department of Chemistry, National and Kapodestrian University of Athens, Panepistimiopolis 15771, Athens, Greece
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13
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Huang H, Bihani M, Zhao JCG. Stereoselective synthesis of spirooxindole derivatives using an organocatalyzed tandem Michael–Michael reaction. Org Biomol Chem 2016; 14:1755-63. [DOI: 10.1039/c5ob02348c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient and stereoselective method for the synthesis of functionalized spirooxindole derivatives was realized using enamine catalysis.
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Affiliation(s)
- Huicai Huang
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
| | - Manisha Bihani
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
| | - John C.-G. Zhao
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
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14
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Zhao K, Zhi Y, Li X, Puttreddy R, Rissanen K, Enders D. Asymmetric synthesis of 3,3′-pyrrolidinyl-dispirooxindoles via a one-pot organocatalytic Mannich/deprotection/aza-Michael sequence. Chem Commun (Camb) 2016; 52:2249-52. [DOI: 10.1039/c5cc10057g] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A highly stereoselective synthesis of functionalized 3,3′-pyrrolidinyl-dispirooxindole derivatives with three stereogenic centers, including two contiguous spiro-stereocenters, has been achieved through an organocatalytic Mannich/Boc-deprotection/aza-Michael sequence.
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Affiliation(s)
- Kun Zhao
- Institute of Organic Chemistry
- RWTH Aachen University
- Aachen
- Germany
| | - Ying Zhi
- Institute of Organic Chemistry
- RWTH Aachen University
- Aachen
- Germany
| | - Xinyi Li
- Institute of Organic Chemistry
- RWTH Aachen University
- Aachen
- Germany
| | - Rakesh Puttreddy
- Department of Chemistry
- Nanoscience Center
- University of Jyvaskyla
- Finland
| | - Kari Rissanen
- Department of Chemistry
- Nanoscience Center
- University of Jyvaskyla
- Finland
| | - Dieter Enders
- Institute of Organic Chemistry
- RWTH Aachen University
- Aachen
- Germany
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15
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Yu L, Yang Z, Peng J, Li P. Substrate-Controlled Synthesis of Functionalized Cyclohexanes with Four Stereocenters by Organocatalytic Asymmetric Domino Reactions Between γ-Nitro Ketone and Enone. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501303] [Citation(s) in RCA: 18] [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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16
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Zhang YY, Gurubrahamam R, Chen K. Rauhut-Currier-Initiated Organocascade Reaction: Synthesis of Substituted Dispirocyclohexanes through a [2+2+2] Strategy Between 2-Arylideneindan-1,3-diones and Activated Alkenes. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500091] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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17
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Chauhan P, Urbanietz G, Raabe G, Enders D. Asymmetric synthesis of functionalized cyclohexanes bearing five stereocenters via a one-pot organocatalytic Michael-Michael-1,2-addition sequence. Chem Commun (Camb) 2015; 50:6853-5. [PMID: 24842728 PMCID: PMC4268544 DOI: 10.1039/c4cc01885k] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A highly stereoselective one-pot organocatalytic procedure involving a Michael–Michael–1,2-addition sequence provides an efficient access to fully substituted cyclohexanes bearing five contiguous stereocenters in good yields and excellent stereoselectivities.
A highly stereoselective one-pot procedure involving an enantioselective Michael addition promoted by low loading of an amino-squaramide catalyst followed by an achiral base catalyzed domino Michael–Knoevenagel-type 1,2-addition sequence provides efficient access to fully substituted cyclohexanes bearing five contiguous stereogenic centers in good yields (68–86%) and excellent stereoselectivities (>30 : 1 dr and 96–99% ee).
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Affiliation(s)
- Pankaj Chauhan
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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18
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Yu L, Yang Q, Li P. Phase-Transfer-Catalyst-Mediated Domino Reaction of γ-Nitro Ketones with Chalcones: Approach to Functionalized Six-Membered-Ring Carbocycles. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403075] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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19
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Liang Q, He J, Ni B. Asymmetric domino Michael–Henry reaction of 1,2-diones with nitroolefins catalyzed by a chiral bisoxazolidine–Ni(acac)2 complex. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.06.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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20
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Loh CCJ, Chauhan P, Hack D, Lehmann C, Enders D. Rapid Asymmetric Synthesis of Highly Functionalized Indanolsviaa Michael/Henry Organocascade with Submol% Squaramide Catalyst Loadings. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400499] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Hahn R, Raabe G, Enders D. Asymmetric synthesis of highly functionalized tetrahydropyrans via a one-pot organocatalytic Michael/Henry/ketalization sequence. Org Lett 2014; 16:3636-9. [PMID: 24971998 PMCID: PMC4700516 DOI: 10.1021/ol501236a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A diastereo- and enantioselective Michael/Henry/ketalization sequence to functionalized tetrahydropyrans is described. The multicomponent cascade reaction uses acetylacetone or β-keto esters, β-nitrostyrenes, and alkynyl aldehydes as substrates affording tetrahydropyrans with five contiguous stereocenters. Employing a bifunctional quinine-based squaramide organocatalyst, the title compounds are obtained in moderate to good yields (27-80%), excellent enantiomeric excesses (93-99% ee), and high diastereomeric ratios (dr > 20:1) after one crystallization.
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Affiliation(s)
- Robert Hahn
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Gerhard Raabe
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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22
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Loh CCJ, Hack D, Enders D. Asymmetric domino synthesis of indanes bearing four contiguous stereocentres catalyzed by sub-mol% loadings of a squaramide in minutes. Chem Commun (Camb) 2013; 49:10230-2. [PMID: 24064746 PMCID: PMC4169095 DOI: 10.1039/c3cc46033a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An efficient diastereo- and enantioselective synthesis of polyfunctionalized indanes bearing four contiguous stereogenic centres in generally very short reaction times and sub-mol% squaramide catalyst loadings has been developed. The novel methodology creates a maximum of two stereocentres per bond formation via an organocatalytic Michael-Henry domino reaction.
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Affiliation(s)
- Charles C J Loh
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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23
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Scheffler U, Mahrwald R. Recent Advances in Organocatalytic Methods for Asymmetric CC Bond Formation. Chemistry 2013; 19:14346-96. [DOI: 10.1002/chem.201301996] [Citation(s) in RCA: 178] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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24
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Loh CCJ, Atodiresei I, Enders D. Asymmetric Organocatalytic Michael/Henry Domino Reactions through Hydrogen-Bond Activation: Kinetic Access to Indane Scaffolds Bearingcis-Vicinal Substituents. Chemistry 2013; 19:10822-6. [DOI: 10.1002/chem.201302131] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Indexed: 12/22/2022]
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25
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Dai Q, Rana NK, Zhao JCG. Highly Stereoselective Synthesis of 2,6-cis-Substituted Tetrahydropyrans Using a One-Pot Sequential Catalysis. Org Lett 2013; 15:2922-5. [DOI: 10.1021/ol400900h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Qipu Dai
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - Nirmal K. Rana
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - John Cong-Gui Zhao
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
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26
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Kuan HH, Chien CH, Chen K. Synthesis of Fully Substituted Dispirocyclohexanes by Organocatalytic [2 + 2 + 2] Annulation Strategy between 2-Arylideneindane-1,3-diones and Aldehydes. Org Lett 2013; 15:2880-3. [DOI: 10.1021/ol4011689] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Hsuan-Hao Kuan
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan 116, ROC
| | - Chung-Han Chien
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan 116, ROC
| | - Kwunmin Chen
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan 116, ROC
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27
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Dai Q, Huang H, Cong-Gui Zhao J. Highly Stereoselective Synthesis of Trisubstituted Cyclohexanols Using a Guanidine-Catalyzed Tandem Henry–Michael Reaction. J Org Chem 2013; 78:4153-7. [DOI: 10.1021/jo4001806] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Qipu Dai
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio,
Texas 78249-0698, United States
| | - Huicai Huang
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio,
Texas 78249-0698, United States
| | - John Cong-Gui Zhao
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio,
Texas 78249-0698, United States
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28
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Enders D, Hahn R, Atodiresei I. Asymmetric Synthesis of Functionalized Tetrahydronaphthalenesviaan Organocatalytic Nitroalkane-Michael/Henry Domino Reaction. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300039] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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29
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Cheng T, Meng S, Huang Y. A Highly Diastereoselective and Enantioselective Synthesis of Polysubstituted Pyrrolidines via an Organocatalytic Dynamic Kinetic Resolution Cascade. Org Lett 2013; 15:1958-61. [DOI: 10.1021/ol4006129] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Tao Cheng
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, China
| | - Sixuan Meng
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, China
| | - Yong Huang
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, China
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Quintavalla A, Lombardo M, Sanap SP, Trombini C. A New Henry/Michael/Retro-Henry/Henry Domino Sequence Promoted by Bifunctional Organocatalysts. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201201135] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Jaiswal PK, Biswas S, Singh S, Pathak B, Mobin SM, Samanta S. Stereoselective synthesis of highly functionalized tetrahydrocarbazoles through a domino Michael–Henry reaction: an easy access to four contiguous chiral centers. RSC Adv 2013. [DOI: 10.1039/c3ra41409d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Jaiswal PK, Biswas S, Singh S, Samanta S. An organocatalytic highly efficient approach to the direct synthesis of substituted carbazoles in water. Org Biomol Chem 2013; 11:8410-8. [DOI: 10.1039/c3ob42034e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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