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Gallagher AG, Tian H, Torres-Herrera OA, Yin S, Xie A, Lange DM, Wilson JK, Mueller LG, Gau MR, Carroll PJ, Martinez-Solorio D. Access to Highly Functionalized Cyclopentenones via Diastereoselective Pauson-Khand Reaction of Siloxy-Tethered 1,7-Enynes. Org Lett 2019; 21:8646-8651. [PMID: 31613103 DOI: 10.1021/acs.orglett.9b03255] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A diastereoselective Co2(CO)8-mediated Pauson-Khand reaction (PKR) of siloxy-tethered 1,7-enynes for the synthesis of cyclopentaoxasilinones has been developed. This transformation can be performed on a multigram scale and is characterized by a broad substrate scope, functional group compatibility, and high chemo- and diastereoselectivity. Oxidation of the resulting cyclopentaoxasilinones delivers stereoenriched β-alkylated cyclopentenones, which are inaccessible by intermolecular PKRs. This research provides a practical solution to the challenges associated with the classical intermolecular PKR.
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Affiliation(s)
- Austin G Gallagher
- Department of Chemistry , Drexel University , 32 South 32nd Street , Philadelphia , Pennsylvania 19104 , United States
| | - Huan Tian
- Department of Chemistry , Drexel University , 32 South 32nd Street , Philadelphia , Pennsylvania 19104 , United States
| | - Osmar A Torres-Herrera
- Department of Chemistry , Drexel University , 32 South 32nd Street , Philadelphia , Pennsylvania 19104 , United States
| | - Shuai Yin
- Department of Chemistry , Drexel University , 32 South 32nd Street , Philadelphia , Pennsylvania 19104 , United States
| | - Anxin Xie
- Department of Chemistry , Drexel University , 32 South 32nd Street , Philadelphia , Pennsylvania 19104 , United States
| | - Daniel M Lange
- Department of Chemistry , Drexel University , 32 South 32nd Street , Philadelphia , Pennsylvania 19104 , United States
| | - Jerica K Wilson
- Department of Chemistry , Drexel University , 32 South 32nd Street , Philadelphia , Pennsylvania 19104 , United States
| | - Louis G Mueller
- Department of Chemistry , Drexel University , 32 South 32nd Street , Philadelphia , Pennsylvania 19104 , United States
| | - Michael R Gau
- Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104 , United States
| | - Patrick J Carroll
- Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104 , United States
| | - Dionicio Martinez-Solorio
- Department of Chemistry , Drexel University , 32 South 32nd Street , Philadelphia , Pennsylvania 19104 , United States
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Safa KD, Abbasi H, Teimuri-Mofrad R, Charandabi FA. [Tris(alkoxydimethylsilyl)methyl]alkylferrocenes as New Ferrocenyl Multifunctional Silyl Ethers. Aust J Chem 2014. [DOI: 10.1071/ch13632] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
[Tris(trimethylsilyl)methyl]alkylferrocenes and [tris(dimethylsilyl)methyl]alkylferrocenes were synthesized by treatment of tris(trimethylsilyl)methyllithium and tris(dimethylsilyl)methyllithium in THF with 3-bromopropylferrocene or 4-bromobutylferrocene at 0°C. [Tris(alkoxydimethylsilyl)methyl]alkylferrocenes were obtained by dehydrocoupling with various aliphatic and benzylic alcohols in the presence of the Karstedt catalyst (platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane in xylene) in good to excellent yields. 4-[Tris(benzyloxydimethylsilyl)methyl]butylferrocene was also prepared from the transetherification of 4-[tris(methoxydimethylsilyl)methyl]butylferrocene with benzyl alcohol in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene as catalyst.
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Scott CN, Wilcox CS. A Mild Synthesis of Unsymmetrical Bisalkoxysilanes through Catalyzed Alcoholysis of Hydridosilanes Containing C−C Multiple Bonds and Aryl Halides. J Org Chem 2009; 75:253-6. [DOI: 10.1021/jo9022765] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Colleen N. Scott
- Department of Chemistry and Combinatorial Chemistry Center, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Craig S. Wilcox
- Department of Chemistry and Combinatorial Chemistry Center, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
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Preparation, molecular and crystal structures of 3-(1-amino-2,2,2-trifluoroethylidene)-1,1,4,5,6,7-hexafluoroindan-2-one, 2-amino-1,1,4,5,6,7-hexafluoro-3-trifluoroacetylindene, and their complexes with dioxane and pyridine. J STRUCT CHEM+ 2008. [DOI: 10.1007/s10947-008-0069-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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González-Gómez Á, Añorbe L, Poblador A, Domínguez G, Pérez-Castells J. Intermolecular and Intramolecular Pauson–Khand Reactions of Functionalized Allenes. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701038] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Dobbs AP, Miller IJ, Martinović S. The use of silicon-based tethers for the Pauson-Khand reaction. Beilstein J Org Chem 2007; 3:21. [PMID: 17617903 PMCID: PMC1949821 DOI: 10.1186/1860-5397-3-21] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2007] [Accepted: 07/06/2007] [Indexed: 12/02/2022] Open
Abstract
A range of silicon-based tethers and promoters have been investigated for use in the development of a silyl-tethered Pauson-Khand reaction.
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Affiliation(s)
- Adrian P Dobbs
- School of Biological and Chemical Sciences, Walter Besant Building, Queen Mary University of London, Mile End Road, London E1 4NS, UK
- Department of Chemistry, University of Exeter, Stocker Road, Exeter, E4 4QD, UK
| | - Ian J Miller
- Department of Chemistry, University of Exeter, Stocker Road, Exeter, E4 4QD, UK
| | - Saša Martinović
- Department of Chemistry, University of Exeter, Stocker Road, Exeter, E4 4QD, UK
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Ishaq S, Porter MJ. Allylsilyl Propargyl Ethers as Substrates for Intramolecular Pauson–Khand Reactions. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397910500406120] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Salma Ishaq
- a Department of Chemistry , University College London , London, UK
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Añorbe L, Poblador A, Domı́nguez G, Pérez-Castells J. New regio and stereoselective intermolecular Pauson–Khand reactions of allenamides. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.04.061] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Blanco-Urgoiti J, Añorbe L, Pérez-Serrano L, Domínguez G, Pérez-Castells J. The Pauson-Khand reaction, a powerful synthetic tool for the synthesis of complex molecules. Chem Soc Rev 2003; 33:32-42. [PMID: 14737507 DOI: 10.1039/b300976a] [Citation(s) in RCA: 374] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
There are still some synthetic chemists who hesitate to use metal-mediated or -catalysed reactions. The Pauson-Khand reaction (PKR) is a powerful transformation that has now been sufficiently well developed to be routinely considered when planning a synthesis, especially of polycyclic complex molecules. This tutorial review aims to encourage the use of this process explaining the best ways of performing a PKR both in the stoichiometric and the catalytic version, showing the scope of the process and its limitations. Additionally, asymmetry can be introduced in the reaction using several strategies, which will be discussed. The most recent examples of the synthetic applications of the PKR in natural product synthesis will give the reader an idea of the great usefulness of this reaction.
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Affiliation(s)
- Jaime Blanco-Urgoiti
- Departamento de Química, Facultad de CC. Experimentales y de la Salud, Universidad San Pablo-CEU, Boadilla del Monte 28668-Madrid, SPAIN
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