51
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Gong JJ, Yuan K, Wu XY. Valine-derived phosphinothiourea as organocatalyst in enantioselective Morita–Baylis–Hillman reactions of acrylates with aromatic aldehydes. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.07.047] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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52
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Feng X, Yuan YQ, Cui HL, Jiang K, Chen YC. Organocatalytic peroxy-asymmetric allylic alkylation. Org Biomol Chem 2009; 7:3660-2. [DOI: 10.1039/b912110b] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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53
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Yuan K, Zhang L, Song HL, Hu Y, Wu XY. Chiral phosphinothiourea organocatalyst in the enantioselective Morita–Baylis–Hillman reactions of aromatic aldehydes with methyl vinyl ketone. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.08.042] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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54
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Abermil N, Masson G, Zhu J. Highly Enantioselective Aza Morita−Baylis−Hillman Reaction Catalyzed by Bifunctional β-Isocupreidine Derivatives. J Am Chem Soc 2008; 130:12596-7. [DOI: 10.1021/ja805122j] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nacim Abermil
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
| | - Jieping Zhu
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
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55
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Waldmann H, Khedkar V, Dückert H, Schürmann M, Oppel I, Kumar K. Asymmetric Synthesis of Natural Product Inspired Tricyclic Benzopyrones by an Organocatalyzed Annulation Reaction. Angew Chem Int Ed Engl 2008; 47:6869-72. [DOI: 10.1002/anie.200802413] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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56
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Waldmann H, Khedkar V, Dückert H, Schürmann M, Oppel I, Kumar K. Asymmetric Synthesis of Natural Product Inspired Tricyclic Benzopyrones by an Organocatalyzed Annulation Reaction. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200802413] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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57
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Creech GS, Zhu XF, Fonovic B, Dudding T, Kwon O. Theory-Guided Design of Brønsted Acid-Assisted Phosphine Catalysis: Synthesis of Dihydropyrones from Aldehydes and Allenoates. Tetrahedron 2008; 64:6935-6942. [PMID: 19606204 DOI: 10.1016/j.tet.2008.04.075] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The phosphine-catalyzed addition of 2,3-butadienoates to aldehydes has been extended to the formation of disubstituted dihydro-2-pyrones. The requisite shift in equilibrium of the intermediate zwitterionic beta-phosphonium dienolates toward the s-cis intermediate was accomplished through the use of a Brønsted acid additive, which disrupts the favorable Coulombic interaction present in the s-trans intermediate. The detailed nature of the synergistic interactions involving the Brønsted acid additives and phosphine involved in the formation of s-cis beta-phosphonium dienolates was analyzed through a series of DFT calculations. Unlike previously reported annulations of aldehydes with allenoates, where trialkylphosphines are optimal catalysts, in this study triphenylphosphine was also found for the first time to be a suitable catalyst for the synthesis of dihydropyrones. This method provides a one-step route toward functionalized dihydropyrones from simple, stable starting materials. In addition, new reaction pathways of phosphine-catalyzed allene annulations are unveiled, with the formation of dihydropyrones being the first example of dual activation in this sphere.
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Affiliation(s)
- Gardner S Creech
- Department of Chemistry and Biochemistry, University of California, Los Angeles 607 Charles E. Young Drive East, Los Angeles, California 90095-1569
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58
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60
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Tang H, Zhao G, Zhou Z, Gao P, He L, Tang C. Chiral Tertiary Amine/L-Proline Cocatalyzed Enantioselective Morita–Baylis–Hillman (MBH) Reaction. European J Org Chem 2008. [DOI: 10.1002/ejoc.200700794] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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61
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Cabrera S, Alemán J, Bolze P, Bertelsen S, Jørgensen K. An Unexpected Organocatalytic Asymmetric Tandem Michael/Morita–Baylis–Hillman Reaction. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200704076] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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62
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Cabrera S, Alemán J, Bolze P, Bertelsen S, Jørgensen K. An Unexpected Organocatalytic Asymmetric Tandem Michael/Morita–Baylis–Hillman Reaction. Angew Chem Int Ed Engl 2008; 47:121-5. [DOI: 10.1002/anie.200704076] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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63
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Affiliation(s)
- Abigail G. Doyle
- Department of Chemistry & Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Eric N. Jacobsen
- Department of Chemistry & Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
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64
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Tang H, Gao P, Zhao G, Zhou Z, He L, Tang C. (1R,2R)-(−)-2-Dimethylamino-1-(4-nitrophenyl)-1,3- propanediol/l-proline cocatalyzed enantioselective Morita–Baylis–Hillman reaction. CATAL COMMUN 2007. [DOI: 10.1016/j.catcom.2007.02.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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65
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Masson G, Housseman C, Zhu J. The enantioselective Morita-Baylis-Hillman reaction and its aza counterpart. Angew Chem Int Ed Engl 2007; 46:4614-28. [PMID: 17397122 DOI: 10.1002/anie.200604366] [Citation(s) in RCA: 427] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The development of asymmetric Morita-Baylis-Hillman (MBH) reactions has evolved dramatically over the past few years, parallel to the emerging concept of bifunctional organocatalysis. Whereas organocatalysis is starting to compete with metal-based catalysis in several important organic transformations, the MBH reaction belongs to a group of prototypical reactions in which organocatalysts already display superiority over their metal-based counterparts. This Minireview summarizes recent mechanistic insights and advances in the design and synthesis of small organic molecules for enantioselective MBH and aza-MBH reactions.
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Affiliation(s)
- Géraldine Masson
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France.
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66
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Dálaigh CO, Connon SJ. Nonenzymatic Acylative Kinetic Resolution of Baylis−Hillman Adducts. J Org Chem 2007; 72:7066-9. [PMID: 17676808 DOI: 10.1021/jo071223b] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first efficient nonenzymatic acylative kinetic resolution of Baylis-Hillman adducts is reported. Chiral pyridine catalyst 1a and an optimized analogue 1e are capable of promoting the synthetically useful enantioselective acylation (the efficiency of which is outstanding for sp(2)-sp(2) carbinol substrates, s = 3.5-13.1, ee up to 97%) of Baylis-Hillman adducts derived from recalcitrant precursors which are currently difficult to synthesize utilizing benchmark asymmetric Baylis-Hillman reaction catalyst technology. A novel one-pot synthesis-kinetic resolution process involving a DBU-catalyzed Baylis-Hillman reaction and subsequent 1e/DBU-mediated enantioselective acylation has also been developed.
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Affiliation(s)
- Ciarán O Dálaigh
- Centre for Synthesis and Chemical Biology, School of Chemistry, University of Dublin, Trinity College, Dublin 2, Ireland
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68
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A novel ytterbium/perfluoroalkylated-pyridine catalyst for Baylis–Hillman reaction in a fluorous biphasic system. J Fluor Chem 2007. [DOI: 10.1016/j.jfluchem.2007.03.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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69
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Masson G, Housseman C, Zhu J. Enantioselektive Morita-Baylis-Hillman-Reaktionen und ihre Aza-Varianten. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200604366] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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70
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Marcia de Figueiredo R, Christmann M. Organocatalytic Synthesis of Drugs and Bioactive Natural Products. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700032] [Citation(s) in RCA: 341] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Mathias Christmann
- RWTH Aachen, Institute of Organic Chemistry Landoltweg 1, 52074 Aachen, Germany, Fax: +49‐241‐8092127
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71
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Kwong CKW, Huang R, Zhang M, Shi M, Toy PH. Bifunctional Polymeric Organocatalysts and Their Application in the Cooperative Catalysis of Morita–Baylis–Hillman Reactions. Chemistry 2007; 13:2369-76. [PMID: 17171735 DOI: 10.1002/chem.200601197] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A series of soluble, non-cross-linked polystyrene-supported triphenylphosphane and 4-dimethylaminopyridine reagents were prepared. Some of these polymeric reagents contained either alkyl alcohol or phenol groups on the polymer backbone. The use of these materials as organocatalysts in a range of Morita-Baylis-Hillman reactions indicated that hydroxyl groups could participate in the reactions and accelerate product formation. In the cases examined, phenol groups were more effective than alkyl alcohol groups for catalyzing the reactions. This article is one of the first reports of the synthesis and use of non-natural, bifunctional polymeric reagents for use in organic synthesis in which both functional groups can cooperatively participate in the catalysis of reactions.
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Affiliation(s)
- Cathy Kar-Wing Kwong
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
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72
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van Steenis DJV, Marcelli T, Lutz M, Spek A, van Maarseveen J, Hiemstra H. Construction of Adjacent Quaternary and Tertiary Stereocentersvia an Organocatalytic Allylic Alkylation of Morita–Baylis–Hillman Carbonates. Adv Synth Catal 2007. [DOI: 10.1002/adsc.200600467] [Citation(s) in RCA: 133] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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73
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Berkessel A, Roland K, Neudörfl JM. Asymmetric Morita−Baylis−Hillman Reaction Catalyzed by Isophoronediamine-Derived Bis(thio)urea Organocatalysts. Org Lett 2006; 8:4195-8. [PMID: 16956185 DOI: 10.1021/ol061298m] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
New and improved bis(thio)urea catalysts were synthesized from isophoronediamine (IPDA) and tested in the Morita-Baylis-Hillman reaction. The best results were achieved in the reaction of 2-cyclohexen-1-one with cyclohexanecarbaldehyde, using the catalyst depicted above, in combination with a novel base (N,N,N',N'-tetramethylisophoronediamine, TMIPDA) in toluene. The desired Morita-Baylis-Hillman product was obtained in 75% yield and 96% ee.
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Affiliation(s)
- Albrecht Berkessel
- Institute for Organic Chemistry, University of Cologne, Greinstrasse 4, 50939 Cologne, Germany.
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