1
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Solas M, Suárez‐Pantiga S, Sanz R. Asymmetric Gold(I)‐Catalyzed Tandem Hydroarylation–Nazarov Cyclization: Enantioselective Access to Cyclopentenones. Angew Chem Int Ed Engl 2022; 61:e202207406. [PMID: 35785510 PMCID: PMC9544548 DOI: 10.1002/anie.202207406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Indexed: 11/13/2022]
Abstract
The asymmetric synthesis of cyclopentachromenones from gold‐catalyzed reaction of readily available skipped alkenynones is described. This cascade reaction involves an initial anti‐Michael hydroarylation of the ynone moiety to form a gold‐functionalized dialkenylketone intermediate, followed by a Nazarov cyclization that proceeds in an unprecedented enantioselective manner. Excellent enantiomeric ratios and chemical yields are obtained under mild reaction conditions.
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Affiliation(s)
- Marta Solas
- Área de Química Orgánica. Departamento de Química Facultad de Ciencias Universidad de Burgos Pza. Misael Bañuelos 09001 Burgos Spain
| | - Samuel Suárez‐Pantiga
- Área de Química Orgánica. Departamento de Química Facultad de Ciencias Universidad de Burgos Pza. Misael Bañuelos 09001 Burgos Spain
| | - Roberto Sanz
- Área de Química Orgánica. Departamento de Química Facultad de Ciencias Universidad de Burgos Pza. Misael Bañuelos 09001 Burgos Spain
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2
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Solas M, Suárez-Pantiga S, Sanz R. Asymmetric Gold(I)‐Catalyzed Tandem Hydroarylation‐Nazarov Cyclization: Enantioselective Access to Cyclopentenones. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Marta Solas
- Universidad de Burgos Química Facultad de CienciasPza. Misael Bañuelos, s/n 09001 Burgos SPAIN
| | - Samuel Suárez-Pantiga
- Universidad de Burgos Química Facultad de CienciasPza. Misael Bañuelos, s/n 09001 Burgos SPAIN
| | - Roberto Sanz
- Universidad de Burgos Área de Química Orgánica Departamento de Química Facultad de Ciencias Pza. Misael Bañuelos s/n 09001 Burgos SPAIN
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3
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Zhao C, Khan S, Khan I, Shah BH, Zhang YJ. Pd‐Catalyzed Asymmetric Allylic Cycloaddition of Vinylethylene Carbonates with Nitroalkenes: A Route to Tetrahydrofurans bearing Vicinal Tetrasubstituted Stereocenters. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Can Zhao
- Shanghai Jiao Tong University School of chemistry and Chemical Engineering CHINA
| | - Sardaraz Khan
- Shanghai Jiao Tong University School of chemistry and Chemical Engineering CHINA
| | - Ijaz Khan
- Shanghai Jiao Tong University School of chemistry and Chemical Engineering CHINA
| | - Babar Hussain Shah
- Shanghai Jiao Tong University School of chemistry and Chemical Engineering CHINA
| | - Yong Jian Zhang
- Shanghai Jiao Tong University School of Chemistry and Chemical Engineering 800 Dongchuan Road 200240 Shanghai CHINA
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4
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Wu G, Wu JR, Huang Y, Yang YW. Enantioselective Synthesis of Quaternary Carbon Stereocenters by Asymmetric Allylic Alkylation: A Review. Chem Asian J 2021; 16:1864-1877. [PMID: 34014613 DOI: 10.1002/asia.202100432] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/19/2021] [Indexed: 12/25/2022]
Abstract
Quaternary stereocenters are of great importance to the three-dimensionality and enhanced properties of new molecules, but the synthetic challenges in creating quaternary stereocenters greatly hinder their wide use in drug discovery, organic material design, and natural product synthesis. The asymmetric allylic alkylation (AAA) of allylic substrates has proven to be a powerful methodology for enantioselective formation of structure skeletons bearing single or more quaternary carbon centers in modern asymmetric organocatalysis. AAA has certain advantages in constructing the tetrasubstituted stereocenters, including but not limited to mild reactive conditions, effective reaction rates, new functional group introduction, and carbon chains length extension. This review outlines the key considerations in the application of AAA reactions and summarizes the recent progress of AAA reactions in the enantioselective synthesis of products containing quaternary stereocenters. Meanwhile, a detailed discussion of the AAA reactions such as ligands, scope of substrates, transformations and the general reaction mechanisms is also provided. We hope this review could stimulate further advances in much broader areas, including organic synthesis, asymmetric catalysis, C-H activation, and symmetrical pharmaceutical chemistry.
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Affiliation(s)
- Gengxin Wu
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, 699 Qianjin Street, Changchun, 130012, P. R. China
| | - Jia-Rui Wu
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, 699 Qianjin Street, Changchun, 130012, P. R. China
| | - Yan Huang
- Key Laboratory of Oil & Gas Fine Chemicals, Ministry of Education & Xinjiang Uyghur Autonomous Region, College of Chemistry, Xinjiang University, Urumqi, Xinjiang, 830000, P. R. China
| | - Ying-Wei Yang
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, 699 Qianjin Street, Changchun, 130012, P. R. China
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5
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Liu X, Zhao C, Zhu R, Liu L. Construction of Vicinal Quaternary Carbon Stereocenters Through Diastereo- and Enantioselective Oxidative 1,6-Conjugate Addition. Angew Chem Int Ed Engl 2021; 60:18499-18503. [PMID: 34278672 DOI: 10.1002/anie.202105594] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 06/01/2021] [Indexed: 12/23/2022]
Abstract
The asymmetric construction of vicinal quaternary carbon stereocenters with at least one moiety in acyclic systems is a formidable challenge. We disclose a solution involving diastereo- and enantioselective oxidative 1,6-conjugate addition. The practical asymmetric cross-dehydrogenative coupling of 2,2-diarylacetonitriles and diverse α-substituted cyclic 1,3-dicarbonyls proceeds, for vicinal quaternary carbon stereocenters with one center in acyclic systems, in excellent yields and stereoselectivities. The generality of the approach is further demonstrated by the stereoselective creation of vicinal quaternary carbon stereocenters with both centers in acyclic systems using acyclic β-ketoesters as coupling partners. Computational studies elucidate the origins of both diastereo- and enantioselectivity.
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Affiliation(s)
- Xigong Liu
- School of School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Changyin Zhao
- School of School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Rongxiu Zhu
- School of School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Lei Liu
- School of School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
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6
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Liu X, Zhao C, Zhu R, Liu L. Construction of Vicinal Quaternary Carbon Stereocenters Through Diastereo‐ and Enantioselective Oxidative 1,6‐Conjugate Addition. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105594] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xigong Liu
- School of School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
| | - Changyin Zhao
- School of School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
| | - Rongxiu Zhu
- School of School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
| | - Lei Liu
- School of School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
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7
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Metternich JB, Reiterer M, Jacobsen EN. Asymmetric Nazarov Cyclizations of Unactivated Dienones by Hydrogen-Bond-Donor/Lewis Acid Co-Catalyzed, Enantioselective Proton-Transfer. Adv Synth Catal 2020; 362:4092-4097. [PMID: 33162875 PMCID: PMC7643875 DOI: 10.1002/adsc.202000831] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Indexed: 12/15/2022]
Abstract
We report an enantioselective Nazarov cyclization catalyzed by chiral hydrogen-bond-donors in concert with silyl Lewis acids. The developed transformation provides access to tri-substituted cyclopentenones in high levels of enantioselectivity (up to 95% e.e.) from a variety of simple unactivated dienones. Kinetic and mechanistic studies are consistent with a reversible 4π-electrocyclization C-C bond-forming step followed by rate- and enantio-determining proton-transfer as the mode of catalysis.
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Affiliation(s)
- Jan B Metternich
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Martin Reiterer
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Eric N Jacobsen
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
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8
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Mitschke N, Christoffers J, Wilkes H. A Straightforward Synthesis of Trideuterated α‐Terpinene for Mechanistic Studies. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nico Mitschke
- Institut für Chemie und Biologie des Meeres (ICBM) Carl von Ossietzky Universität Oldenburg 26111 Oldenburg Germany
| | - Jens Christoffers
- Institut für Chemie Carl von Ossietzky Universität Oldenburg 26111 Oldenburg Germany
| | - Heinz Wilkes
- Institut für Chemie und Biologie des Meeres (ICBM) Carl von Ossietzky Universität Oldenburg 26111 Oldenburg Germany
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9
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González-Pérez AB, Villar P, de Lera AR. A Computational Study of Model Parent Systems and Reported Aza-(Iso)Nazarov/Aza-(Iso)Piancatelli Electrocyclic Reactions. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900103] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Adán B. González-Pérez
- University of Vigo; Department of Organic Chemistry and Center of Biomedical Research (CINBIO); Lagoas-Marcosende 36310 Vigo Spain
| | - Pedro Villar
- University of Vigo; Department of Organic Chemistry and Center of Biomedical Research (CINBIO); Lagoas-Marcosende 36310 Vigo Spain
| | - Angel R. de Lera
- University of Vigo; Department of Organic Chemistry and Center of Biomedical Research (CINBIO); Lagoas-Marcosende 36310 Vigo Spain
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10
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Hethcox JC, Shockley SE, Stoltz BM. Enantioselective Synthesis of Vicinal All-Carbon Quaternary Centers via Iridium-Catalyzed Allylic Alkylation. Angew Chem Int Ed Engl 2018; 57:8664-8667. [PMID: 29750856 PMCID: PMC6033654 DOI: 10.1002/anie.201804820] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Indexed: 01/08/2023]
Abstract
The development of the first enantioselective transition-metal-catalyzed allylic alkylation providing access to acyclic products bearing vicinal all-carbon quaternary centers is disclosed. The iridium-catalyzed allylic alkylation reaction proceeds with excellent yields and selectivities for a range of malononitrile-derived nucleophiles and trisubstituted allylic electrophiles. The utility of these sterically congested products is explored through a series of diverse chemo- and diastereoselective product transformations to afford a number of highly valuable, densely functionalized building blocks, including those containing vicinal all-carbon quaternary stereocenters.
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Affiliation(s)
- J Caleb Hethcox
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101-20, Pasadena, CA, 91125, USA
| | - Samantha E Shockley
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101-20, Pasadena, CA, 91125, USA
| | - Brian M Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101-20, Pasadena, CA, 91125, USA
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11
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Karad SN, Panchal H, Clarke C, Lewis W, Lam HW. Enantioselective Synthesis of Chiral Cyclopent-2-enones by Nickel-Catalyzed Desymmetrization of Malonate Esters. Angew Chem Int Ed Engl 2018; 57:9122-9125. [PMID: 29768708 PMCID: PMC6485403 DOI: 10.1002/anie.201805578] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Indexed: 11/08/2022]
Abstract
The enantioselective synthesis of highly functionalized chiral cyclopent‐2‐enones by the reaction of alkynyl malonate esters with arylboronic acids is described. These desymmetrizing arylative cyclizations are catalyzed by a chiral phosphinooxazoline/nickel complex, and cyclization is enabled by the reversible E/Z isomerization of alkenylnickel species. The general methodology is also applicable to the synthesis of 1,6‐dihydropyridin‐3(2H)‐ones.
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Affiliation(s)
- Somnath Narayan Karad
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, Jubilee Campus, Triumph Road, Nottingham, NG7 2TU, UK.,School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Heena Panchal
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, Jubilee Campus, Triumph Road, Nottingham, NG7 2TU, UK.,School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Christopher Clarke
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, Jubilee Campus, Triumph Road, Nottingham, NG7 2TU, UK.,School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Hon Wai Lam
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, Jubilee Campus, Triumph Road, Nottingham, NG7 2TU, UK.,School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
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12
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Karad SN, Panchal H, Clarke C, Lewis W, Lam HW. Enantioselective Synthesis of Chiral Cyclopent-2-enones by Nickel-Catalyzed Desymmetrization of Malonate Esters. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805578] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Somnath Narayan Karad
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus; Triumph Road Nottingham NG7 2TU UK
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Heena Panchal
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus; Triumph Road Nottingham NG7 2TU UK
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Christopher Clarke
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus; Triumph Road Nottingham NG7 2TU UK
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - William Lewis
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Hon Wai Lam
- The GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry; University of Nottingham; Jubilee Campus; Triumph Road Nottingham NG7 2TU UK
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
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13
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Hethcox JC, Shockley SE, Stoltz BM. Enantioselective Synthesis of Vicinal All‐Carbon Quaternary Centers via Iridium‐Catalyzed Allylic Alkylation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804820] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- J. Caleb Hethcox
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering California Institute of Technology 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
| | - Samantha E. Shockley
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering California Institute of Technology 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
| | - Brian M. Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering California Institute of Technology 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
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14
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Congmon J, Tius MA. Contiguous Quaternary Centers from a Au
I
‐Catalyzed Nazarov Cyclization. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800604] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jonathan Congmon
- Chemistry Department University of Hawaii at Manoa 2545 The Mall 96822 Honolulu HI USA
| | - Marcus A. Tius
- Chemistry Department University of Hawaii at Manoa 2545 The Mall 96822 Honolulu HI USA
- University of Hawaii Cancer Center 701 Ilalo Street 96813 Honolulu HI USA
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15
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Gelozia S, Kwon Y, McDonald R, West FG. One-Pot Generation of Bicyclo[3.1.0]hexanols and Cyclohexanones by Double Interrupted Nazarov Reactions. Chemistry 2018; 24:6052-6056. [PMID: 29444379 DOI: 10.1002/chem.201800758] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Indexed: 12/20/2022]
Abstract
Organoaluminum-mediated double interrupted Nazarov cyclization to access bicyclo[3.1.0]hexanols via nucleophilic methyl attack followed by Simmons-Smith-type electrophilic cyclopropanation is reported. These alcohols can undergo ring opening to afford cyclohexanones or cyclohexenones, broadening the range of scaffolds available via interrupted Nazarov reaction beyond the usual cyclopentanoid products. Throughout the sequence, a total of four new C-C bonds are formed, along with four new stereogenic centers.
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Affiliation(s)
- Shorena Gelozia
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2, Canada
| | - Yonghoon Kwon
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2, Canada
| | - Robert McDonald
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2, Canada
| | - F G West
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2, Canada
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16
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Jolit A, Dickinson CF, Kitamura K, Walleser PM, Yap GPA, Tius MA. Catalytic Enantioselective Nazarov Cyclization. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701117] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Anais Jolit
- Chemistry Department; University of Hawaii at Manoa; 2545 The Mall 96822 Honolulu HI USA
| | - Cody F. Dickinson
- Chemistry Department; University of Hawaii at Manoa; 2545 The Mall 96822 Honolulu HI USA
| | - Kei Kitamura
- Chemistry Department; University of Hawaii at Manoa; 2545 The Mall 96822 Honolulu HI USA
| | - Patrick M. Walleser
- Chemistry Department; University of Hawaii at Manoa; 2545 The Mall 96822 Honolulu HI USA
| | - Glenn P. A. Yap
- Department of Chemistry and Biochemistry; University of Delaware; 236 Brown Laboratory 19716 Newark DE USA
| | - Marcus A. Tius
- Chemistry Department; University of Hawaii at Manoa; 2545 The Mall 96822 Honolulu HI USA
- University of Hawaii Cancer Center; 701 Ilalo Street 96813 Honolulu HI USA
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17
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Komatsuki K, Sadamitsu Y, Sekine K, Saito K, Yamada T. Stereospecific Decarboxylative Nazarov Cyclization Mediated by Carbon Dioxide for the Preparation of Highly Substituted 2-Cyclopentenones. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705909] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Keiichi Komatsuki
- Department of Chemistry; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Yuta Sadamitsu
- Department of Chemistry; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Kohei Sekine
- Department of Chemistry; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Kodai Saito
- Department of Chemistry; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Tohru Yamada
- Department of Chemistry; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
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18
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Komatsuki K, Sadamitsu Y, Sekine K, Saito K, Yamada T. Stereospecific Decarboxylative Nazarov Cyclization Mediated by Carbon Dioxide for the Preparation of Highly Substituted 2-Cyclopentenones. Angew Chem Int Ed Engl 2017; 56:11594-11598. [DOI: 10.1002/anie.201705909] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Keiichi Komatsuki
- Department of Chemistry; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Yuta Sadamitsu
- Department of Chemistry; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Kohei Sekine
- Department of Chemistry; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Kodai Saito
- Department of Chemistry; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Tohru Yamada
- Department of Chemistry; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
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19
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Peter D, Brückner R. A New Approach to Models of the 4,5-Dihydroxycyclopentenone Core of the Kodaistatins A-D: Elucidation of the Diol Configuration in Kodaistatin A. Chemistry 2017; 23:12104-12109. [DOI: 10.1002/chem.201701185] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Indexed: 11/10/2022]
Affiliation(s)
- David Peter
- Institut für Organische Chemie; Albert-Ludwigs-Universität; Albertstraße 21 79104 Freiburg Germany
| | - Reinhard Brückner
- Institut für Organische Chemie; Albert-Ludwigs-Universität; Albertstraße 21 79104 Freiburg Germany
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20
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Hethcox JC, Shockley SE, Stoltz BM. Iridium-Catalyzed Stereoselective Allylic Alkylation Reactions with Crotyl Chloride. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609960] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- J. Caleb Hethcox
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering; California Institute of Technology; 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
| | - Samantha E. Shockley
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering; California Institute of Technology; 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
| | - Brian M. Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering; California Institute of Technology; 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
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21
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Hethcox JC, Shockley SE, Stoltz BM. Iridium-Catalyzed Stereoselective Allylic Alkylation Reactions with Crotyl Chloride. Angew Chem Int Ed Engl 2016; 55:16092-16095. [PMID: 27891825 DOI: 10.1002/anie.201609960] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 10/27/2016] [Indexed: 11/09/2022]
Abstract
The development of the first enantio-, diastereo-, and regioselective iridium-catalyzed allylic alkylation reaction of prochiral enolates to form an all-carbon quaternary stereogenic center with an aliphatic-substituted allylic electrophile is disclosed. The reaction proceeds with good to excellent selectivity with a range of substituted tetralone-derived nucleophiles furnishing products bearing a newly formed vicinal tertiary and all-carbon quaternary stereodyad. The utility of this protocol is further demonstrated via a number of synthetically diverse product transformations.
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Affiliation(s)
- J Caleb Hethcox
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101-20, Pasadena, CA, 91125, USA
| | - Samantha E Shockley
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101-20, Pasadena, CA, 91125, USA
| | - Brian M Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101-20, Pasadena, CA, 91125, USA
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22
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Cai Y, Tang Y, Atodiresei I, Rueping M. Catalytic Asymmetric Piancatelli Rearrangement: Brønsted Acid Catalyzed 4π Electrocyclization for the Synthesis of Multisubstituted Cyclopentenones. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yunfei Cai
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Yurong Tang
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Iuliana Atodiresei
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Magnus Rueping
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
- King Abdullah University of Science and Technology (KAUST); KAUST Catalysis Center (KCC); Thuwal 23955-6900 Saudi Arabia
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23
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Cai Y, Tang Y, Atodiresei I, Rueping M. Catalytic Asymmetric Piancatelli Rearrangement: Brønsted Acid Catalyzed 4π Electrocyclization for the Synthesis of Multisubstituted Cyclopentenones. Angew Chem Int Ed Engl 2016; 55:14126-14130. [DOI: 10.1002/anie.201608023] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 09/19/2016] [Indexed: 01/22/2023]
Affiliation(s)
- Yunfei Cai
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Yurong Tang
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Iuliana Atodiresei
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Magnus Rueping
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
- King Abdullah University of Science and Technology (KAUST); KAUST Catalysis Center (KCC); Thuwal 23955-6900 Saudi Arabia
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24
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Zhou Z, Dixon DD, Jolit A, Tius MA. The Evolution of the Total Synthesis of Rocaglamide. Chemistry 2016; 22:15929-15936. [DOI: 10.1002/chem.201603312] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Zhe Zhou
- Chemistry Department; University of Hawaii at Manoa; 2545 The Mall Honolulu HI 96822 USA
| | - Darryl D. Dixon
- Chemistry Department; University of Hawaii at Manoa; 2545 The Mall Honolulu HI 96822 USA
| | - Anais Jolit
- Chemistry Department; University of Hawaii at Manoa; 2545 The Mall Honolulu HI 96822 USA
| | - Marcus A. Tius
- Chemistry Department; University of Hawaii at Manoa; 2545 The Mall Honolulu HI 96822 USA
- University of Hawaii; Cancer Center; 701 Ilalo Street Honolulu HI 96813 USA
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25
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Głodek M, Makal A, Kłys A, Zakrzewski J, Plażuk D. Direct Synthesis of Perylene-Fused Cyclic Ketones from Perylene and 2-Alkenoic Acids. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Marta Głodek
- Department of Organic Chemistry; University of Łódź; Faculty of Chemistry; Tamka 12 91-403 Łódź Poland
| | - Anna Makal
- Department of Chemistry; Warsaw University; Pasteura 1 02-093 Warszawa Poland
| | - Arkadiusz Kłys
- Laboratory of Molecular Spectroscopy; University of Łódź; Faculty of Chemistry; Tamka 12 91-403 Łódź Poland
| | - Janusz Zakrzewski
- Department of Organic Chemistry; University of Łódź; Faculty of Chemistry; Tamka 12 91-403 Łódź Poland
| | - Damian Plażuk
- Department of Organic Chemistry; University of Łódź; Faculty of Chemistry; Tamka 12 91-403 Łódź Poland
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26
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Carmichael RA, Chalifoux WA. Multicomponent Double Diels–Alder/Nazarov Tandem Cyclization of Symmetric Cross‐Conjugated Diynones to Generate [6‐5‐6] Tricyclic Products. Chemistry 2016; 22:8781-5. [DOI: 10.1002/chem.201601850] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Rachael A. Carmichael
- Department of Chemistry University of Nevada, Reno 1664 N. Virginia St. Reno NV 89557 USA
| | - Wesley A. Chalifoux
- Department of Chemistry University of Nevada, Reno 1664 N. Virginia St. Reno NV 89557 USA
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27
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Amr FI, Vila C, Blay G, Muñoz MC, Pedro JR. Organocatalytic Enantioselective Alkylation of Pyrazol-3-ones with Isatin-Derived Ketimines: Stereocontrolled Construction of Vicinal Tetrasubstituted Stereocenters. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600036] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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28
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Takeda T, Kondoh A, Terada M. Construction of Vicinal Quaternary Stereogenic Centers by Enantioselective Direct Mannich-Type Reaction Using a Chiral Bis(guanidino)iminophosphorane Catalyst. Angew Chem Int Ed Engl 2016; 55:4734-7. [DOI: 10.1002/anie.201601352] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Tadahiro Takeda
- Process Technology Research Laboratories; Daiichi Sankyo Co., Ltd.; Edogawa-ku Tokyo 134-8630 Japan
| | - Azusa Kondoh
- Research and Analytical Center for Giant Molecules; Graduate School of Science; Tohoku University; Aoba-ku Sendai 980-8578 Japan
| | - Masahiro Terada
- Research and Analytical Center for Giant Molecules; Graduate School of Science; Tohoku University; Aoba-ku Sendai 980-8578 Japan
- Department of Chemistry; Graduate School of Science; Tohoku University; Aoba-ku Sendai 980-8578 Japan
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29
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Takeda T, Kondoh A, Terada M. Construction of Vicinal Quaternary Stereogenic Centers by Enantioselective Direct Mannich‐Type Reaction Using a Chiral Bis(guanidino)iminophosphorane Catalyst. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601352] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Tadahiro Takeda
- Process Technology Research Laboratories Daiichi Sankyo Co., Ltd. Edogawa-ku Tokyo 134-8630 Japan
| | - Azusa Kondoh
- Research and Analytical Center for Giant Molecules Graduate School of Science Tohoku University Aoba-ku Sendai 980-8578 Japan
| | - Masahiro Terada
- Research and Analytical Center for Giant Molecules Graduate School of Science Tohoku University Aoba-ku Sendai 980-8578 Japan
- Department of Chemistry Graduate School of Science Tohoku University Aoba-ku Sendai 980-8578 Japan
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30
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Yu C, Chen B, Zhou T, Tian Q, Zhang G. Gold(I)-Catalyzed Tandem Transformation with Diynes: Rapid Access to Linear Cyclopentenone-Fused Polycyclic Molecules. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503599] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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31
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Yu C, Chen B, Zhou T, Tian Q, Zhang G. Gold(I)-Catalyzed Tandem Transformation with Diynes: Rapid Access to Linear Cyclopentenone-Fused Polycyclic Molecules. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/anie.201503599] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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32
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Kwon Y, Schatz DJ, West FG. 1,4-Diketones from Cross-Conjugated Dienones: Potassium Permanganate-Interrupted Nazarov Reaction. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503696] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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33
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Kwon Y, Schatz DJ, West FG. 1,4‐Diketones from Cross‐Conjugated Dienones: Potassium Permanganate‐Interrupted Nazarov Reaction. Angew Chem Int Ed Engl 2015; 54:9940-3. [DOI: 10.1002/anie.201503696] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Yonghoon Kwon
- Department of Chemistry, University of Alberta, E3‐43 Gunning‐Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2 (Canada)
| | - Devon J. Schatz
- Department of Chemistry, University of Alberta, E3‐43 Gunning‐Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2 (Canada)
| | - Frederick G. West
- Department of Chemistry, University of Alberta, E3‐43 Gunning‐Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2 (Canada)
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34
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35
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Kitamura K, Shimada N, Stewart C, Atesin AC, Ateşin TA, Tius MA. Enantioselective Palladium(0)-Catalyzed Nazarov-Type Cyclization. Angew Chem Int Ed Engl 2015; 54:6288-91. [PMID: 25833716 DOI: 10.1002/anie.201500881] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 03/06/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Kei Kitamura
- Chemistry Department, University of Hawaii at Manoa, 2545 The Mall, Honolulu, HI 96822 (USA)
| | - Naoyuki Shimada
- Chemistry Department, University of Hawaii at Manoa, 2545 The Mall, Honolulu, HI 96822 (USA)
| | - Craig Stewart
- Chemistry Department, University of Hawaii at Manoa, 2545 The Mall, Honolulu, HI 96822 (USA)
| | - Abdurrahman C Atesin
- Chemistry Department, The University of Texas-Pan American, 1201 West University Drive, Edinburg, TX 78539-2999 (USA)
| | - Tülay A Ateşin
- Chemistry Department, The University of Texas-Pan American, 1201 West University Drive, Edinburg, TX 78539-2999 (USA)
| | - Marcus A Tius
- Chemistry Department, University of Hawaii at Manoa, 2545 The Mall, Honolulu, HI 96822 (USA).
- University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI 96813 (USA).
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36
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Raja S, Nakajima M, Rueping M. Experimental and computational study of the catalytic asymmetric 4π-electrocyclization of N-heterocycles. Angew Chem Int Ed Engl 2014; 54:2762-5. [PMID: 25533025 DOI: 10.1002/anie.201408020] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 11/05/2014] [Indexed: 11/12/2022]
Abstract
The first asymmetric metal-catalyzed Nazarov cyclization of N-heterocycles has been developed. The use of a chiral catalyst allows the enantioselective electrocyclization of N-heterocycles under mild conditions and the corresponding products are obtained in good yields with excellent enantio- and diastereoselectivity. The reaction mechanism and the absolute configuration of the obtained products are explained by means of computational studies.
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Affiliation(s)
- Sadiya Raja
- Institut of Organic Chemistry, RWTH Aachen, Landoltweg 1, 52074 Aachen (Germany)
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37
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Raja S, Nakajima M, Rueping M. Experimentelle und theoretische Untersuchungen zur katalytischen asymmetrischen 4π-Elektrocyclisierung von N-Heterocyclen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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38
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Zhao J, Fang B, Luo W, Hao X, Liu X, Lin L, Feng X. Enantioselective Construction of Vicinal Tetrasubstituted Stereocenters by the Mannich Reaction of Silyl Ketene Imines with Isatin‐Derived Ketimines. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408730] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jiannan Zhao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
| | - Bing Fang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
| | - Weiwei Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
| | - Xiaoyu Hao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin (China)
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39
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Zhao J, Fang B, Luo W, Hao X, Liu X, Lin L, Feng X. Enantioselective Construction of Vicinal Tetrasubstituted Stereocenters by the Mannich Reaction of Silyl Ketene Imines with Isatin‐Derived Ketimines. Angew Chem Int Ed Engl 2014; 54:241-4. [DOI: 10.1002/anie.201408730] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 10/05/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Jiannan Zhao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
| | - Bing Fang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
| | - Weiwei Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
| | - Xiaoyu Hao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 (China)
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin (China)
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40
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Khan A, Yang L, Xu J, Jin LY, Zhang YJ. Palladium-Catalyzed Asymmetric Decarboxylative Cycloaddition of Vinylethylene Carbonates with Michael Acceptors: Construction of Vicinal Quaternary Stereocenters. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201407013] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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41
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Khan A, Yang L, Xu J, Jin LY, Zhang YJ. Palladium-Catalyzed Asymmetric Decarboxylative Cycloaddition of Vinylethylene Carbonates with Michael Acceptors: Construction of Vicinal Quaternary Stereocenters. Angew Chem Int Ed Engl 2014; 53:11257-60. [DOI: 10.1002/anie.201407013] [Citation(s) in RCA: 220] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Indexed: 11/06/2022]
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42
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William R, Wang S, Ding F, Arviana EN, Liu XW. Interrupted Imino-Nazarov Cyclization of 1-Aminopentadienyl Cation and Related Cascade Process. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405251] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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43
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William R, Wang S, Ding F, Arviana EN, Liu XW. Interrupted Imino-Nazarov Cyclization of 1-Aminopentadienyl Cation and Related Cascade Process. Angew Chem Int Ed Engl 2014; 53:10742-6. [DOI: 10.1002/anie.201405251] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 06/23/2014] [Indexed: 11/07/2022]
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