51
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Sugita S, Ueda M, Doi N, Takeda N, Miyata O. Gold-catalyzed sequential cyclization/rearrangement reaction of O-allyl hydroxamates: atom economical synthesis of 3-hydroxyisoxazoles. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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52
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Khodja W, Leclair A, Rull-Barrull J, Zammattio F, Kutonova KV, Trusova ME, Felpin FX, Rodriguez-Zubiri M. The promoting effect of pyridine ligands in the Pd-catalysed Heck–Matsuda reaction. NEW J CHEM 2016. [DOI: 10.1039/c6nj01717g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Simple and cheap pyridine-type ligands promote good to excellent yields for poorly efficient Pd-catalyzed Heck–Matsuda arylations in less than 1 h.
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Affiliation(s)
- Walid Khodja
- UMR 6230 CEISAM
- Université de Nantes
- UFR des Sciences et des Techniques
- CNRS
- 44322 Nantes Cedex 3
| | - Alexandre Leclair
- UMR 6230 CEISAM
- Université de Nantes
- UFR des Sciences et des Techniques
- CNRS
- 44322 Nantes Cedex 3
| | - Jordi Rull-Barrull
- UMR 6230 CEISAM
- Université de Nantes
- UFR des Sciences et des Techniques
- CNRS
- 44322 Nantes Cedex 3
| | - Françoise Zammattio
- UMR 6230 CEISAM
- Université de Nantes
- UFR des Sciences et des Techniques
- CNRS
- 44322 Nantes Cedex 3
| | - Ksenia V. Kutonova
- Department of Biotechnology and Organic Chemistry
- National Research Tomsk Polytechnic University
- 634050 Tomsk
- Russia
| | - Marina E. Trusova
- Department of Biotechnology and Organic Chemistry
- National Research Tomsk Polytechnic University
- 634050 Tomsk
- Russia
| | - François-Xavier Felpin
- UMR 6230 CEISAM
- Université de Nantes
- UFR des Sciences et des Techniques
- CNRS
- 44322 Nantes Cedex 3
| | - Mireia Rodriguez-Zubiri
- UMR 6230 CEISAM
- Université de Nantes
- UFR des Sciences et des Techniques
- CNRS
- 44322 Nantes Cedex 3
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53
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Baillie RA, Lefèvre GP, Wakeham RJ, Holmes AS, Legzdins P. Unsymmetrical Saturated Ketones Resulting from Activations of Hydrocarbon C(sp3)–H and C(sp2)–H Bonds Effected by Cp*W(NO)(H)(η3-allyl) Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00537] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rhett A. Baillie
- Department
of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Guillaume P. Lefèvre
- Department
of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Russell J. Wakeham
- Department
of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Aaron S. Holmes
- Department
of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Peter Legzdins
- Department
of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
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54
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Sato S, Takeda N, Miyoshi T, Ueda M, Miyata O. Vicinal Functionalization ofN-Alkoxyenamines: Tandem Umpolung Phenylation-Nucleophilic Addition Reaction Sequence. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500308] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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55
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Wu YK, Dunbar CR, McDonald R, Ferguson MJ, West FG. Experimental and Computational Studies on Interrupted Nazarov Reactions: Exploration of Umpolung Reactivity at the α-Carbon of Cyclopentanones. J Am Chem Soc 2014; 136:14903-11. [DOI: 10.1021/ja507638r] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Yen-Ku Wu
- X-ray Crystallography Lab, †Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Center, Edmonton, Alberta T6G 2G2, Canada
| | - Christine R. Dunbar
- X-ray Crystallography Lab, †Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Center, Edmonton, Alberta T6G 2G2, Canada
| | - Robert McDonald
- X-ray Crystallography Lab, †Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Center, Edmonton, Alberta T6G 2G2, Canada
| | - Michael J. Ferguson
- X-ray Crystallography Lab, †Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Center, Edmonton, Alberta T6G 2G2, Canada
| | - F. G. West
- X-ray Crystallography Lab, †Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Center, Edmonton, Alberta T6G 2G2, Canada
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56
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Abstract
Alkylation of carbonyl compounds is a commonly used carbon-carbon bond–forming reaction. However, the conventional enolate alkylation approach remains problematic due to lack of regioselectivity, risk of overalkylation, and the need for strongly basic conditions and expensive alkyl halide reagents. Here, we describe development of a ketone-alkylation strategy using simple olefins as the alkylating agents. This strategy employs a bifunctional catalyst comprising a secondary amine and a low-valent rhodium complex capable of activating ketones and olefins simultaneously. Both cyclic and acyclic ketones can be mono-α-alkylated with simple terminal olefins, such as ethylene, propylene, 1-hexene, and styrene, selectively at the less hindered site; a large number of functional groups are tolerated. The pH/redox neutral and byproduct-free nature of this dual-activation approach shows promise for large-scale syntheses.
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57
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Mizar P, Wirth T. Flexible Stereoselective Functionalizations of Ketones through Umpolung with Hypervalent Iodine Reagents. Angew Chem Int Ed Engl 2014; 53:5993-7. [DOI: 10.1002/anie.201400405] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 03/18/2014] [Indexed: 12/22/2022]
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58
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Mizar P, Wirth T. Flexible stereoselektive Funktionalisierung von Ketonen durch Umpolung mit hypervalenten Iodreagentien. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400405] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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59
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Takenaka K, Mohanta SC, Sasai H. Palladium Enolate Umpolung: Cyclative Diacetoxylation of Alkynyl Cyclohexadienones Promoted by a Pd/SPRIX Catalyst. Angew Chem Int Ed Engl 2014; 53:4675-9. [DOI: 10.1002/anie.201311172] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 02/21/2014] [Indexed: 11/11/2022]
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60
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Takenaka K, Mohanta SC, Sasai H. Palladium Enolate Umpolung: Cyclative Diacetoxylation of Alkynyl Cyclohexadienones Promoted by a Pd/SPRIX Catalyst. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201311172] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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61
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Affiliation(s)
- Andrey A. Tabolin
- N. D. Zelinsky
Institute
of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospekt
47, Moscow 119991, Russian Federation
| | - Sema L. Ioffe
- N. D. Zelinsky
Institute
of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospekt
47, Moscow 119991, Russian Federation
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62
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So SS, Mattson AE. Stereoselective NH Insertion-Arylation Reactions of Nitrodiazoesters. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201300285] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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63
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Kobayashi Y, Feng C, Ikoma A, Ogawa N, Hirotsu T. Synthesis of trans-2,6-disubstituted cyclohexanones through allylic substitution. Org Lett 2014; 16:760-3. [PMID: 24451031 DOI: 10.1021/ol403472y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
trans-2,6-Disubstituted cyclohexanones were synthesized with high regio- and stereoselectivity by allylic substitution followed by ozonolysis. Both alkyl and aryl groups were successfully installed to the cyclohexane ring. The stereochemistry of the SN2' products was determined to be controlled by the pre-existing chirality on the ring. The present method is highlighted by the synthesis of enantiomerically enriched cyclohexanones.
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Affiliation(s)
- Yuichi Kobayashi
- Department of Bioengineering, Tokyo Institute of Technology , Box B52, Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8501, Japan
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64
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Xu QL, Gao H, Yousufuddin M, Ess DH, Kürti L. Aerobic, Transition-Metal-Free, Direct, and Regiospecific Mono-α-arylation of Ketones: Synthesis and Mechanism by DFT Calculations. J Am Chem Soc 2013; 135:14048-51. [DOI: 10.1021/ja4074563] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Qing-Long Xu
- Division
of Chemistry, Department of Biochemistry, UT Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Hongyin Gao
- Division
of Chemistry, Department of Biochemistry, UT Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Muhammed Yousufuddin
- Center
for Nanostructured Materials, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Daniel H. Ess
- Department
of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - László Kürti
- Division
of Chemistry, Department of Biochemistry, UT Southwestern Medical Center, Dallas, Texas 75390, United States
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65
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Miyoshi T, Matsuya S, Tsugawa M, Sato S, Ueda M, Miyata O. Sequential Retro-Ene Arylation Reaction of N-Alkoxyenamides for the Synthesis of tert-Alkylamines. Org Lett 2013; 15:3374-7. [DOI: 10.1021/ol4014238] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tetsuya Miyoshi
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Syota Matsuya
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Mikako Tsugawa
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Shohei Sato
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Masafumi Ueda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Okiko Miyata
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
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66
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Miyoshi T, Sato S, Tanaka H, Hasegawa C, Ueda M, Miyata O. One-pot method for α-phenylation of ketones using isoxazolidine and triphenylaluminum. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.05.146] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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67
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68
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Courant T, Masson G. Photoredox-initiated α-alkylation of imines through a three-component radical/cationic reaction. Chemistry 2011; 18:423-7. [PMID: 22161892 DOI: 10.1002/chem.201103062] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Thibaut Courant
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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69
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Sengupta R, Witek JA, Weinreb SM. Stereochemical investigation of conjugate additions of carbon- and heteronucleophiles to ring-substituted nitrosocyclohexenes. Tetrahedron 2011; 67:8229-8234. [PMID: 22125343 DOI: 10.1016/j.tet.2011.08.054] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Intermolecular Michael-type conjugate additions of some in situ-generated ring-substituted nitrosocyclohexenes with both carbon- and heteronucleophiles have been found to be highly stereoselective, leading predominantly (or exclusively) to products resulting from axial attack on a half-chair conformation of the nitrosoalkene substrate.
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Affiliation(s)
- Ritobroto Sengupta
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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70
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Carbon–carbon bond-forming reactions of α-carbonyl carbocations: exploration of a reversed-polarity equivalent of enolate chemistry. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.07.065] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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71
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Quiclet-Sire B, Tölle N, Zafar SN, Zard SZ. Oxime Derivatives as α-Electrophiles. From α-Tetralone Oximes to Tetracyclic Frameworks. Org Lett 2011; 13:3266-9. [DOI: 10.1021/ol2012204] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Béatrice Quiclet-Sire
- Laboratoire de Synthèse Organique, CNRS UMR 7652 Ecole Polytechnique, 91128 Palaiseau Cedex, France
| | - Nina Tölle
- Laboratoire de Synthèse Organique, CNRS UMR 7652 Ecole Polytechnique, 91128 Palaiseau Cedex, France
| | - Syeda Nahid Zafar
- Laboratoire de Synthèse Organique, CNRS UMR 7652 Ecole Polytechnique, 91128 Palaiseau Cedex, France
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique, CNRS UMR 7652 Ecole Polytechnique, 91128 Palaiseau Cedex, France
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72
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Witek JA, Weinreb SM. Investigation of the stereochemistry of intermolecular conjugate additions of nucleophiles to acyclic nitrosoalkenes. Org Lett 2011; 13:1258-60. [PMID: 21294528 PMCID: PMC3046371 DOI: 10.1021/ol2000793] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Michael-type conjugate additions of γ-chiral aldehyde-derived acyclic nitrosoalkenes have been explored using a series of carbon and hetero nucleophiles. In all cases examined, these reactions are stereoselective, leading exclusively to the anti products.
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Affiliation(s)
- Jason A. Witek
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Steven M. Weinreb
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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73
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Kumar P, Li P, Korboukh I, Wang TL, Yennawar H, Weinreb SM. Further studies of intramolecular Michael reactions of nitrosoalkenes for construction of functionalized bridged ring systems. J Org Chem 2011; 76:2094-101. [PMID: 21361394 DOI: 10.1021/jo1024392] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A wide variety of stabilized carbanions have been found to participate as nucleophiles in intramolecular Michael-type conjugate additions to in situ generated nitrosoalkenes to form bridged carbocyclic systems. The vinylnitroso platforms for these cyclizations have been prepared via two key steps involving ring-closing metathesis of vinyl chlorides and regioselective conversion of vinyl chlorides to α-chloroketones with sodium hypochlorite in glacial acetic acid/acetone. An alternative approach to preparation of some cyclization substrates has involved use of more reactive enol ethers as precursors to the requisite α-chloroketones. A sulfonamide anion has also been found to be an effective nucleophile in this type of reaction, leading to formation of a 6-azabicyclo[3.2.1]octane.
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Affiliation(s)
- Praveen Kumar
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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74
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Tanimoto H. Carbon-Carbon Bond Formation by Way of Umpolung Strategy of Enamine Derivatives. J SYN ORG CHEM JPN 2011. [DOI: 10.5059/yukigoseikyokaishi.69.823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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