501
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Delaney JP, Henderson LC. Direct Asymmetric Aldol Reactions in Water Catalysed by a Highly Active
C
2
‐Symmetrical Bisprolinamide Organocatalyst. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100667] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Joshua P. Delaney
- School of Life and Environmental Sciences, Deakin University, Geelong, Victoria, Australia 3216, Fax: (+61)‐352‐271‐040
| | - Luke C. Henderson
- School of Life and Environmental Sciences, Deakin University, Geelong, Victoria, Australia 3216, Fax: (+61)‐352‐271‐040
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502
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Sánchez D, Bastida D, Burés J, Isart C, Pineda O, Vilarrasa J. Relative Tendency of Carbonyl Compounds To Form Enamines. Org Lett 2012; 14:536-9. [DOI: 10.1021/ol203157s] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dani Sánchez
- Departament de Química Orgànica, Facultat de Química, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Catalonia, Spain
| | - David Bastida
- Departament de Química Orgànica, Facultat de Química, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Catalonia, Spain
| | - Jordi Burés
- Departament de Química Orgànica, Facultat de Química, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Catalonia, Spain
| | - Carles Isart
- Departament de Química Orgànica, Facultat de Química, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Catalonia, Spain
| | - Oriol Pineda
- Departament de Química Orgànica, Facultat de Química, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Catalonia, Spain
| | - Jaume Vilarrasa
- Departament de Química Orgànica, Facultat de Química, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Catalonia, Spain
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503
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Lipshutz BH, Ghorai S. Organocatalysis in water at room temperature with in-flask catalyst recycling. Org Lett 2012; 14:422-5. [PMID: 22182221 PMCID: PMC3359698 DOI: 10.1021/ol203242r] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A new designer surfactant is described containing a covalently bound organocatalyst, proline. This species is water-soluble and, via spontaneous nanomicelle formation, catalyzes aldol reactions on water-soluble or -insoluble substrates in water as the only medium. Recycling the catalyst is trivial, as the amphiphile/catalyst remains in the aqueous phase in the flask.
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Affiliation(s)
- Bruce H Lipshutz
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, USA.
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504
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Kokotos CG. Construction of Tertiary Alcohols Bearing Perfluoroalkyl Chains Catalyzed by Prolinamide-Thioureas. J Org Chem 2012; 77:1131-5. [DOI: 10.1021/jo2020104] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christoforos G. Kokotos
- Laboratory
of Organic Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis, Athens 15771,
Greece
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505
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Zhu W, He C, Wu P, Wu X, Duan C. “Click” post-synthetic modification of metal–organic frameworks with chiral functional adduct for heterogeneous asymmetric catalysis. Dalton Trans 2012; 41:3072-7. [DOI: 10.1039/c2dt12153k] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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506
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Kano T, Song S, Maruoka K. Molecular recognition of ketomalonates by asymmetric aldol reaction of aldehydes with secondary-amine organocatalysts. Chem Commun (Camb) 2012; 48:7037-9. [DOI: 10.1039/c2cc32772d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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507
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Murphy SK, Coulter MM, Dong VM. β-hydroxy ketones prepared by regioselective hydroacylation. Chem Sci 2012. [DOI: 10.1039/c1sc00634g] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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508
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Shirakawa S, Ota K, Terao SJ, Maruoka K. The direct catalytic asymmetric aldol reaction of α-substituted nitroacetates with aqueous formaldehyde under base-free neutral phase-transfer conditions. Org Biomol Chem 2012; 10:5753-5. [DOI: 10.1039/c2ob07193b] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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509
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Viózquez SF, Bañón-Caballero A, Guillena G, Nájera C, Gómez-Bengoa E. Enantioselective direct aldol reaction of α-keto esters catalyzed by (Sa)-binam-d-prolinamide under quasi solvent-free conditions. Org Biomol Chem 2012; 10:4029-35. [DOI: 10.1039/c2ob25224d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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510
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Díaz-Oltra S, Ruiz P, Falomir E, Murga J, Carda M, Marco JA. Double diastereoselection in anti aldol reactions mediated by dicyclohexylchloroborane between an l-erythrulose derivative and chiral aldehydes. Org Biomol Chem 2012; 10:6937-44. [DOI: 10.1039/c2ob25803j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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511
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Salam N, Mondal P, Mondal J, Roy AS, Bhaumik A, Islam SM. Highly efficient base catalysis and sulfide oxidation reactions over new functionalized mesoporous polymers. RSC Adv 2012. [DOI: 10.1039/c2ra20630g] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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512
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Habib F, Cook C, Korobkov I, Murugesu M. Novel in situ manganese-promoted double-aldol addition. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.11.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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513
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Fotaras S, Kokotos CG, Kokotos G. A tripeptide-like prolinamide-thiourea as an aldol reaction catalyst. Org Biomol Chem 2012; 10:5613-9. [DOI: 10.1039/c2ob25693b] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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514
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515
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Okamura T, Asano K, Matsubara S. Organocatalytic asymmetric oxy-Michael addition to a γ-hydroxy-α,β-unsaturated thioester via hemiacetal intermediates. Chem Commun (Camb) 2012; 48:5076-8. [DOI: 10.1039/c2cc31602a] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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516
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Conde E, Bello D, de Cózar A, Sánchez M, Vázquez MA, Cossío FP. Densely substituted unnatural l- and d-prolines as catalysts for highly enantioselective stereodivergent (3 + 2) cycloadditions and aldol reactions. Chem Sci 2012. [DOI: 10.1039/c2sc20199b] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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517
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Hernández JG, Juaristi E. Recent efforts directed to the development of more sustainable asymmetric organocatalysis. Chem Commun (Camb) 2012; 48:5396-409. [DOI: 10.1039/c2cc30951c] [Citation(s) in RCA: 209] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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518
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Wang W, Ma X, Wan J, Cao J, Tang Q. Preparation and confinement effect of a heterogeneous 9-amino-9-deoxy-epi-cinchonidine organocatalyst for asymmetric aldol addition in aqueous medium. Dalton Trans 2012; 41:5715-26. [DOI: 10.1039/c2dt12390h] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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519
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Wang Z, Zhang C, Zhang C, Zheng YS, Xiao J. Solvent- and Catalyst-Free Direct Aldol Reactions. CHINESE J CHEM 2011. [DOI: 10.1002/cjoc.201180441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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520
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Paradowska J, Pasternak M, Gut B, Gryzło B, Mlynarski J. Direct Asymmetric Aldol Reactions Inspired by Two Types of Natural Aldolases: Water-Compatible Organocatalysts and ZnII Complexes. J Org Chem 2011; 77:173-87. [DOI: 10.1021/jo201584w] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Joanna Paradowska
- Institute
of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224
Warsaw, Poland
| | - Monika Pasternak
- Faculty
of Chemistry, Jagiellonian University,
Ingardena 3, 30-060 Krakow,
Poland
| | - Bartosz Gut
- Faculty
of Chemistry, Jagiellonian University,
Ingardena 3, 30-060 Krakow,
Poland
| | - Beata Gryzło
- Faculty
of Chemistry, Jagiellonian University,
Ingardena 3, 30-060 Krakow,
Poland
| | - Jacek Mlynarski
- Institute
of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224
Warsaw, Poland
- Faculty
of Chemistry, Jagiellonian University,
Ingardena 3, 30-060 Krakow,
Poland
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521
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Opalka SM, Longstreet AR, McQuade DT. Continuous proline catalysis via leaching of solid proline. Beilstein J Org Chem 2011; 7:1671-9. [PMID: 22238546 PMCID: PMC3252872 DOI: 10.3762/bjoc.7.197] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Accepted: 11/14/2011] [Indexed: 11/26/2022] Open
Abstract
Herein, we demonstrate that a homogeneous catalyst can be prepared continuously via reaction with a packed-bed of a catalyst precursor. Specifically, we perform continuous proline catalyzed α-aminoxylations using a packed-bed of L-proline. The system relies on a multistep sequence in which an aldehyde and thiourea additive are passed through a column of solid proline, presumably forming a soluble oxazolidinone intermediate. This transports a catalytic amount of proline from the packed-bed into the reactor coil for subsequent combination with a solution of nitrosobenzene, affording the desired optically active α-aminooxy alcohol after reduction. To our knowledge, this is the first example in which a homogeneous catalyst is produced continuously using a packed-bed. We predict that the method will not only be useful for other L-proline catalyzed reactions, but we also foresee that it could be used to produce other catalytic species in flow.
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Affiliation(s)
- Suzanne M Opalka
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853
| | - Ashley R Longstreet
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306
| | - D Tyler McQuade
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306
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522
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Delaney JP, Henderson LC. Investigating ionic effects applied to water based organocatalysed aldol reactions. Int J Mol Sci 2011; 12:9083-94. [PMID: 22272120 PMCID: PMC3257117 DOI: 10.3390/ijms12129083] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 11/26/2011] [Accepted: 11/29/2011] [Indexed: 11/17/2022] Open
Abstract
Saturated aqueous solutions of various common salts were examined for their effect on aqueous aldol reactions catalysted by a highly active C2-symmetric diprolinamide organocatalyst developed in our laboratory. With respect to the aldol reaction between cyclohexanone and 4-nitrobenzaldehyde, deionised water was always a superior medium to salt solutions though some correlation to increasing anion size and depression in enantiomeric excess could be observed. Additionally, the complete inhibition of catalyst activity observed when employing tap water could be alleviated by the inclusion of ethylenediaminetetraacetate (EDTA) into the aqueous media prior to reaction initiation. Extension of these reaction conditions demonstrated that these ionic effects vary on a case-to-case basis depending on the ketone/aldehyde combination.
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Affiliation(s)
- Joshua P Delaney
- Chemistry and Systems Biology, Strategic Research Center for Biotechnology, Deakin University, Waurn Ponds Campus, Geelong, Victoria 3216, Australia.
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523
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Lygo B, Davison C, Evans T, Gilks JA, Leonard J, Roy CE. Highly enantioselective aldol reactions using a tropos dibenz[c,e]azepine organocatalyst. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.09.101] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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524
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525
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Montroni E, Sanap SP, Lombardo M, Quintavalla A, Trombini C, Dhavale DD. A New Robust and Efficient Ion-Tagged Proline Catalyst Carrying an Amide Spacer for the Asymmetric Aldol Reaction. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100595] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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526
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Monrad RN, Madsen R. Modern methods for shortening and extending the carbon chain in carbohydrates at the anomeric center. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.08.047] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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527
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Das J, Le Cavelier F, Rouden J, Blanchet J. Expanding the Scope of the Direct Regiospecific Asymmetric Aldol Reaction to Enones and Dienones Catalyzed by a BINOL-Derived Brønsted Acid. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101282] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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528
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Lazny R, Nodzewska A, Tomczuk I. Spontaneous and diastereoselective aldol reactions of cyclic β-amino ketones in the presence of water. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.08.107] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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529
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Pearson AJ, Panda S. N-Prolinylanthranilamide Pseudopeptides as Bifunctional Organocatalysts for Asymmetric Aldol Reactions. Org Lett 2011; 13:5548-51. [DOI: 10.1021/ol202284n] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anthony J. Pearson
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Santanu Panda
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, United States
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530
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Matsunaga S, Yoshino T. Construction of contiguous tetrasubstituted chiral carbon stereocenters via direct catalytic asymmetric aldol and Mannich-type reactions. CHEM REC 2011; 11:260-8. [PMID: 21898777 DOI: 10.1002/tcr.201100020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Indexed: 11/11/2022]
Abstract
Catalytic asymmetric synthesis of unnatural amino acids with vicinal tetrasubstituted chiral carbon stereocenters is described. In the first part, direct catalytic asymmetric aldol reaction of simple non-activated ketone electrophiles with α-substituted α-isothiocyanato ester donors was realized. A Mg/Schiff base catalyst promoted the aldol reaction, and α-amino-β-hydroxy esters were obtained in up to 98% ee and 98:2 d.r. In the second part, the Mg/Schiff base catalyst and a Sr/Schiff base catalyst were utilized for stereodivergent direct asymmetric Mannich-type reaction of ketimines. The Mg/Schiff base catalyst gave syn-α,β-diamino esters, while the Sr/Schiff base catalyst produced anti-α,β-diamino esters in good to high enantioselectivity, up to 97% ee.
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Affiliation(s)
- Shigeki Matsunaga
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Tokyo 113-0033, Japan.
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531
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Kawato Y, Iwata M, Yazaki R, Kumagai N, Shibasaki M. A simplified catalytic system for direct catalytic asymmetric aldol reaction of thioamides; application to an enantioselective synthesis of atorvastatin. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.109] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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532
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López-Iglesias M, Busto E, Gotor V, Gotor-Fernández V. Use of Protease from Bacillus licheniformis as Promiscuous Catalyst for Organic Synthesis: Applications in CC and CN Bond Formation Reactions. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100347] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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533
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Gold‐Catalyzed, Intramolecular, Oxygen‐Transfer Reactions of 2‐Alkynyl‐1,5‐diketones or 2‐Alkynyl‐5‐ketoesters: Scope, Expansion, and Mechanistic Investigations on a New [4+2] Cycloaddition. Chemistry 2011; 17:10690-9. [DOI: 10.1002/chem.201101448] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Indexed: 11/07/2022]
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534
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Opalka SM, Steinbacher JL, Lambiris BA, McQuade DT. Thiourea/Proline Derivative-Catalyzed Synthesis of Tetrahydrofuran Derivatives: A Mechanistic View. J Org Chem 2011; 76:6503-17. [DOI: 10.1021/jo200838v] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Suzanne M. Opalka
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Jeremy L. Steinbacher
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Brandon A. Lambiris
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - D. Tyler McQuade
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
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535
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Abstract
The strategic use of thiopyran templates to facilitate polypropionate synthesis was first demonstrated in Woodward's landmark total synthesis of erythromycin A in 1981 where the topology of a fused bicyclic system was exploited. In the ensuing three decades, various alternative strategic applications of thiopyran motifs to achieve key stereoselective transformations have emerged including, inter alia, unique substrates for chemoenzymatic syntheses, surrogates for 3-pentanone in enantioselective aldol reactions, and templates for enantiotopic group selective reactions. This review summarizes these developments.
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Affiliation(s)
- Dale E Ward
- Department of Chemistry, University of Saskatchewan, Saskatoon, SK S7N 5C9, Canada.
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536
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Zambrana J, Romea P, Urpí F, Luján C. Highly Stereoselective Titanium-Mediated Aldol Reaction from (S)-4-Benzyloxy-3-methyl-2-butanone. J Org Chem 2011; 76:8575-87. [DOI: 10.1021/jo201021z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joana Zambrana
- Departament de Química Orgànica, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Catalonia, Spain
| | - Pedro Romea
- Departament de Química Orgànica, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Catalonia, Spain
| | - Fèlix Urpí
- Departament de Química Orgànica, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Catalonia, Spain
| | - Cristina Luján
- Departament de Química Orgànica, Universitat de Barcelona, Carrer Martí i Franqués 1-11, 08028 Barcelona, Catalonia, Spain
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537
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Liu Y, Wang J, Sun Q, Li R. Chiral 1,2-diaminocyclohexane as organocatalyst for enantioselective aldol reaction. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.04.116] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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538
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Screening of simple N-aryl and N-heteroaryl pyrrolidine amide organocatalysts for the enantioselective aldol reaction of acetone with isatin. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.07.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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539
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Guang J, Zhao CG. Organocatalytic enantioselective tandem aldol-cyclization reaction of α-isothiocyanato imides and activated carbonyl compounds. TETRAHEDRON, ASYMMETRY 2011; 22:1205-1211. [PMID: 21921975 PMCID: PMC3171191 DOI: 10.1016/j.tetasy.2011.06.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The organocatalytic enantioselective tandem aldol-cyclization reactions of α-isothiocyanato imides and activated carbonyl compounds, such as isatins, an α-ketolactone and a 1,2-dione, have been studied with cinchona alkaloid-derived thiourea-catalysts. This methodology provided an easy way to access enantiomerically enriched spirobicyclic thiocarbamates with high yields and good to excellent stereoselectivity, which have been demonstrated to be useful precursors for the synthesis of biologically active molecules.
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Affiliation(s)
- Jie Guang
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas, 78249-0698, USA
| | - Cong-Gui Zhao
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas, 78249-0698, USA
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540
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Bhanushali M, Zhao CG. Developing novel organocatalyzed aldol reactions for the enantioselective synthesis of biologically active molecules. SYNTHESIS-STUTTGART 2011; 2011:1815-1830. [PMID: 21918584 PMCID: PMC3170696 DOI: 10.1055/s-0030-1260029] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Aldol reaction is one of the most important methods for the formation of carbon-carbon bonds. Because of its significance and usefulness, asymmetric versions of this reaction have been realized with different approaches in the past. Over the last decade, the area of organocatalysis has made significant progresses. As one of most studied reactions in organocatalyses, organocatalyzed aldol reaction has emerged as a powerful tool for the synthesis of a large number of useful products in optically enriched forms. In this review, we summarize our efforts on the development of novel organocatalyzed aldol reactions for the enantioselective synthesis of biological active molecules. Literatures closely related to our studies are also covered.
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Affiliation(s)
- Mayur Bhanushali
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA
| | - Cong-Gui Zhao
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA
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541
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Pearson AJ, Panda S. N-Prolinylanthranilic acid derivatives as bifunctional organocatalysts for asymmetric aldol reactions. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.04.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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542
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Robak MT, Herbage MA, Ellman JA. Development of an N-sulfinyl prolinamide for the asymmetric aldol reaction. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.03.030] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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543
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2-Hydroxy-3-[(S)-prolinamido]pinanes as novel bifunctional organocatalysts for asymmetric aldol reactions in aqueous media. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.07.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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544
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Moyano A, Rios R. Asymmetric organocatalytic cyclization and cycloaddition reactions. Chem Rev 2011; 111:4703-832. [PMID: 21615119 DOI: 10.1021/cr100348t] [Citation(s) in RCA: 712] [Impact Index Per Article: 54.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Albert Moyano
- Departament de Química Orgànica, Facultat de Química, Universitat de Barcelona, C. Martí i Franquès 1-11, 08028-Barcelona, Catalonia, Spain.
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545
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Klein C, Hüttel W. A Simple Procedure for Selective Hydroxylation of L-Proline and L-Pipecolic Acid with Recombinantly Expressed Proline Hydroxylases. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201000863] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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546
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Liu L, Xu B, Hammond GB. Construction of cyclic enones via gold-catalyzed oxygen transfer reactions. Beilstein J Org Chem 2011; 7:606-14. [PMID: 21647265 PMCID: PMC3107534 DOI: 10.3762/bjoc.7.71] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Accepted: 05/03/2011] [Indexed: 11/23/2022] Open
Abstract
During the last decade, gold-catalyzed reactions have become a tour de force in organic synthesis. Recently, the gold-, Brønsted acid- or Lewis acid-catalyzed oxygen transfer from carbonyl to carbon–carbon triple bond, the so-called alkyne–carbonyl metathesis, has attracted much attention because this atom economical transformation generates α,β-unsaturated carbonyl derivatives which are of great interest in synthetic organic chemistry. This mini-review focuses on the most recent achievements on gold-catalyzed oxygen transfer reactions of tethered alkynones, diynes or alkynyl epoxides to cyclic enones. The corresponding mechanisms for the transformations are also discussed.
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Affiliation(s)
- Leping Liu
- Department of Chemistry, University of Louisville, 2320 South Brook Street, Louisville, KY 40292, USA
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547
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Hu S, Zhang L, Li J, Luo S, Cheng JP. Chiral Primary Amine Catalyzed Asymmetric Direct Cross-Aldol Reaction of Acetaldehyde. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100267] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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548
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Roughley SD, Jordan AM. The Medicinal Chemist’s Toolbox: An Analysis of Reactions Used in the Pursuit of Drug Candidates. J Med Chem 2011; 54:3451-79. [PMID: 21504168 DOI: 10.1021/jm200187y] [Citation(s) in RCA: 1749] [Impact Index Per Article: 134.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Allan M. Jordan
- Cancer Research UK Drug Discovery Unit, Paterson Institute for Cancer Research, University of Manchester, Wilmslow Road, Manchester, M20 4BX, U.K
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549
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Tian H, Gao JL, Xu H, Zheng LY, Huang WB, Liu QW, Zhang SQ. Proline-based dipeptides as efficient organocatalysts for asymmetric aldol reactions in brine. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.06.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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550
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Kumagai N, Shibasaki M. Direkte katalytische asymmetrische Reaktionen unter Protonentransferkatalyse. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201100918] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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