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Polydentate P, N-based ligands for palladium-catalyzed cross-coupling reactions. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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2
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Ultrasound-Accelerated, Concise, and Highly Efficient Synthesis of 2-Oxazoline Derivatives Using Heterogenous Calcium Ferrite Nanoparticles and Their DFT Studies. J CHEM-NY 2021. [DOI: 10.1155/2021/7375058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A rapid and operationally simple approach for synthesising biologically relevant 2-oxazoline derivatives has been developed through highly efficient ultrasound-promoted coupling reactions of thioamides and amino alcohols using calcium ferrite nanoparticles as heterogeneous catalysts. The major advantage of using ultrasound irradiation lies in the drastic reduction of reaction time as compared with conventional stirring. Furthermore, quantum chemical investigations for the synthesised 2-oxazoline derivatives have been carried out at the DFT/B3LYP/6-311 + G (d, p) level of theory to predict the optimized geometry. The molecular properties such as bond lengths, bond orders, Milliken charges, frontier molecular orbitals, global reactivity descriptors, molecular electrostatic potential map, and thermodynamic parameters of all the compounds have also been reported at the same level of theory.
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de Mello MB, Clososki GC, Piovan L, de Oliveira AR. An alternative approach to differentially substituted 2-oxazoline chalcogen derivatives. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.06.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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4
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Xiao N, Wang SH, Zhang AY, Li HY, Wang P, Li W, Chen BH, Chen GF, Li N. An efficient one-pot synthesis of 2-oxazolines with molecular iodine under ultrasound irradiation. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-1961-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Grenning AJ, Van Allen CK, Maji T, Lang SB, Tunge JA. Development of asymmetric deacylative allylation. J Org Chem 2013; 78:7281-7. [PMID: 23734611 PMCID: PMC3827786 DOI: 10.1021/jo400793a] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Herein we present the development of asymmetric deacylative allylation of ketone enolates. The reaction directly couples readily available ketone pronucleophiles with allylic alcohols using facile retro-Claisen cleavage to form reactive intermediates in situ. The simplicity and robustness of the reaction conditions is demonstrated by the preparation of >6 g of an allylated tetralone from commercially available materials. Furthermore, use of nonracemic PHOX ligands allows intermolecular formation of quaternary stereocenters directly from allylic alcohols.
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Affiliation(s)
- Alexander J. Grenning
- Department of Chemistry, The University of Kansas 1251 Wescoe Hall Drive, Lawrence, KS66045-7582 (USA)
| | - Christie K. Van Allen
- Department of Chemistry, The University of Kansas 1251 Wescoe Hall Drive, Lawrence, KS66045-7582 (USA)
| | - Tapan Maji
- Department of Chemistry, The University of Kansas 1251 Wescoe Hall Drive, Lawrence, KS66045-7582 (USA)
| | - Simon B. Lang
- Department of Chemistry, The University of Kansas 1251 Wescoe Hall Drive, Lawrence, KS66045-7582 (USA)
| | - Jon A. Tunge
- Department of Chemistry, The University of Kansas 1251 Wescoe Hall Drive, Lawrence, KS66045-7582 (USA)
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Duclos MC, Singjunla Y, Petit C, Favre-Réguillon A, Jeanneau E, Popowycz F, Métay E, Lemaire M. Synthesis and evaluation of P-chirogenic monodentate binaphthyl phosphines. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.07.136] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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8
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Boukattaya F, Stanovych A, Setzer P, Abid S, Ammar H, Pearson-Long MSM, Bertus P. Simple and convenient access to α,α,α-trisubstituted amides by double addition of Grignard reagents to acyl cyanohydrins. Chem Commun (Camb) 2012; 48:8655-7. [DOI: 10.1039/c2cc34841a] [Citation(s) in RCA: 10] [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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Behenna DC, Mohr JT, Sherden NH, Marinescu SC, Harned AM, Tani K, Seto M, Ma S, Novák Z, Krout MR, McFadden RM, Roizen JL, Enquist JA, White DE, Levine SR, Petrova KV, Iwashita A, Virgil SC, Stoltz BM. Enantioselective decarboxylative alkylation reactions: catalyst development, substrate scope, and mechanistic studies. Chemistry 2011; 17:14199-223. [PMID: 22083969 PMCID: PMC3365686 DOI: 10.1002/chem.201003383] [Citation(s) in RCA: 172] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Revised: 07/29/2011] [Indexed: 11/07/2022]
Abstract
α-Quaternary ketones are accessed through novel enantioselective alkylations of allyl and propargyl electrophiles by unstabilized prochiral enolate nucleophiles in the presence of palladium complexes with various phosphinooxazoline (PHOX) ligands. Excellent yields and high enantiomeric excesses are obtained from three classes of enolate precursor: enol carbonates, enol silanes, and racemic β-ketoesters. Each of these substrate classes functions with nearly identical efficiency in terms of yield and enantioselectivity. Catalyst discovery and development, the optimization of reaction conditions, the exploration of reaction scope, and applications in target-directed synthesis are reported. Experimental observations suggest that these alkylation reactions occur through an unusual inner-sphere mechanism involving binding of the prochiral enolate nucleophile directly to the palladium center.
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Affiliation(s)
| | | | - Nathaniel H. Sherden
- 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)
| | - Smaranda C. Marinescu
- 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)
| | - Andrew M. Harned
- 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)
| | - Kousuke Tani
- 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)
| | - Masaki Seto
- 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)
| | - Sandy Ma
- 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)
| | - Zoltán Novák
- 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)
| | - Michael R. Krout
- 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)
| | - Ryan M. McFadden
- 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)
| | - Jennifer L. Roizen
- 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)
| | - John A. Enquist
- 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)
| | - David E. White
- 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 R. Levine
- 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)
| | - Krastina V. Petrova
- 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)
| | - Akihiko Iwashita
- 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)
| | - Scott C. Virgil
- 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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Braun M, Meletis P, Visse R. Palladium-Catalyzed Allylic Alkylation of Doubly Deprotonated Carboxylic Acids. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100372] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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Meletis P, Patil M, Thiel W, Frank W, Braun M. Enantioselective and diastereoselective Tsuji-Trost allylic alkylation of lactones: an experimental and computational study. Chemistry 2011; 17:11243-9. [PMID: 21922557 DOI: 10.1002/chem.201101406] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Indexed: 11/09/2022]
Abstract
The Tsuji-Trost protocol has been successfully employed for the allylic alkylation of preformed lactone enolates. It has been demonstrated that this Pd-catalyzed reaction can be carried out in an enantio- and diastereoselective manner. The use of additives, such as LiCl, was found to be crucial for reaching high levels of product selectivity. For one particular pair of reactants, density functional theory was used to investigate the mechanism of the nucleophilic addition. Among the five pathways considered, the reaction between an (allyl)Pd(BINAP) complex and a LiCl-lithium enolate adduct is predicted to be the most likely route for C-C bond formation. LiCl plays a key role as the connecting link between the noble metal and the enolate in the kinetically favored transition state. The computed diastereoselectivity ratio is in good agreement with the experimentally observed value.
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Affiliation(s)
- Panos Meletis
- Institut für Organische Chemie und Makromolekulare Chemie, Universität Düsseldorf, 40225 Düsseldorf, Germany
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Castillo MR, Castillón S, Claver C, Fraile JM, Gual A, Martín M, Mayoral JA, Sola E. Tridentate chiral NPN ligands based on bis(oxazolines) and their use in Pd-catalyzed enantioselective allylic substitution in molecular and ionic liquids. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.079] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Xu Q, Li Z, Chen H. A Convenient Synthesis of 2-Oxazolines and 2-Benoxazoles with PPh3-DDQ as the Dehydrating Reagent. CHINESE J CHEM 2011. [DOI: 10.1002/cjoc.201190190] [Citation(s) in RCA: 8] [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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Flapper J, Kooijman H, Lutz M, Spek AL, van Leeuwen PWNM, Elsevier CJ, Kamer PCJ. Nickel and Palladium Complexes of New Pyridine-Phosphine Ligands and Their Use in Ethene Oligomerization. Organometallics 2009. [DOI: 10.1021/om900038u] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jitte Flapper
- van ’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018WV Amsterdam, The Netherlands, Dutch Polymer Institute, PO Box 902, 5600 AX Eindhoven, The Netherlands, Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, and School of Chemistry, University of St. Andrews, St. Andrews, Fife, Scotland KY16 9ST, U.K
| | - Huub Kooijman
- van ’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018WV Amsterdam, The Netherlands, Dutch Polymer Institute, PO Box 902, 5600 AX Eindhoven, The Netherlands, Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, and School of Chemistry, University of St. Andrews, St. Andrews, Fife, Scotland KY16 9ST, U.K
| | - Martin Lutz
- van ’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018WV Amsterdam, The Netherlands, Dutch Polymer Institute, PO Box 902, 5600 AX Eindhoven, The Netherlands, Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, and School of Chemistry, University of St. Andrews, St. Andrews, Fife, Scotland KY16 9ST, U.K
| | - Anthony L. Spek
- van ’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018WV Amsterdam, The Netherlands, Dutch Polymer Institute, PO Box 902, 5600 AX Eindhoven, The Netherlands, Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, and School of Chemistry, University of St. Andrews, St. Andrews, Fife, Scotland KY16 9ST, U.K
| | - Piet W. N. M. van Leeuwen
- van ’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018WV Amsterdam, The Netherlands, Dutch Polymer Institute, PO Box 902, 5600 AX Eindhoven, The Netherlands, Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, and School of Chemistry, University of St. Andrews, St. Andrews, Fife, Scotland KY16 9ST, U.K
| | - Cornelis J. Elsevier
- van ’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018WV Amsterdam, The Netherlands, Dutch Polymer Institute, PO Box 902, 5600 AX Eindhoven, The Netherlands, Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, and School of Chemistry, University of St. Andrews, St. Andrews, Fife, Scotland KY16 9ST, U.K
| | - Paul C. J. Kamer
- van ’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018WV Amsterdam, The Netherlands, Dutch Polymer Institute, PO Box 902, 5600 AX Eindhoven, The Netherlands, Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, and School of Chemistry, University of St. Andrews, St. Andrews, Fife, Scotland KY16 9ST, U.K
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16
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Hargaden GC, Guiry PJ. Recent Applications of Oxazoline-Containing Ligands in Asymmetric Catalysis. Chem Rev 2009; 109:2505-50. [DOI: 10.1021/cr800400z] [Citation(s) in RCA: 425] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gráinne C. Hargaden
- Centre for Synthesis and Chemical Biology, School of Chemistry and Chemical Biology, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin 4, Ireland
| | - Patrick J. Guiry
- Centre for Synthesis and Chemical Biology, School of Chemistry and Chemical Biology, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin 4, Ireland
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17
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Braun M, Meier T, Laicher F, Meletis P, Fidan M. Palladium-Catalyzed Diastereoselective and Enantioselective Allylic Alkylations of Ketone Enolates. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200700409] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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18
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Doherty MD, Trudeau S, White PS, Morken JP, Brookhart M. Ethylene Oligomerization Catalyzed by a Unique Phosphine−Oxazoline Palladium(II) Complex. Propagation and Chain Transfer Mechanisms. Organometallics 2007. [DOI: 10.1021/om061025v] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mark D. Doherty
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Stéphane Trudeau
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Peter S. White
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - James P. Morken
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Maurice Brookhart
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
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