1
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Ikeuchi K, Hirokawa Y, Sasage T, Fujii R, Yoshitani A, Suzuki T, Tanino K. Unique Reactivity of the 1,4-Bis(silyloxy)-1,3-cyclopentadiene Moiety: Application to the Synthesis of 7-Norbornanone Derivatives. Chemistry 2024:e202401908. [PMID: 38770667 DOI: 10.1002/chem.202401908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 05/20/2024] [Accepted: 05/21/2024] [Indexed: 05/22/2024]
Abstract
We describe a method for the synthesis of various 2-silyloxy-2-norbornen-7-ones by exploiting the specific reactivity of the 1,4-bis(silyloxy)-1,3-cyclopentadiene framework, which is generated by the silylation of a 2,2-disubstituted-1,3-cyclopentanedione bearing a picolinoyloxy group at the 2' position of its C-2 side chain. The release of the acyloxy group during the reaction generates carbocations that are then attacked by silyloxy-substituted carbons in the 1,4-bis(silyloxy)-1,3-cyclopentadiene moiety skeleton, forming a 4,5-cis-fused ring skeleton. Skeletal rearrangement of the bicyclic core results in the formation of the corresponding 2-silyloxy-2-norbornen-7-one. This novel transformation of 1,3-cyclopentanedione moieties can be used to synthesise other cyclopentenone-fused bicyclic frameworks.
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Affiliation(s)
- Kazutada Ikeuchi
- Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0810, Japan
| | - Yoshito Hirokawa
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0810, Japan
| | - Tomonari Sasage
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0810, Japan
| | - Ryo Fujii
- School of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0810, Japan
| | - Akihiro Yoshitani
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0810, Japan
| | - Takahiro Suzuki
- Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0810, Japan
| | - Keiji Tanino
- Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0810, Japan
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2
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Dokai Y, Amemiya T, Yamada T, Saito K. Decarboxylative Intramolecular [3 + 2] Cycloaddition of Cyclic Enol Carbonates: Construction of a Bicyclo[3.3.0]octanone Skeleton. Org Lett 2023; 25:7562-7566. [PMID: 37800539 DOI: 10.1021/acs.orglett.3c02956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Stereoselective synthesis of bicyclic cyclopentanones was achieved by sequential Tf2O-catalyzed decarboxylation and intramolecular [3 + 2] cycloaddition reactions of cyclic enol carbonates bearing an alkene unit. Four stereogenic centers in the obtained cyclopentanone were stereoselectively constructed. This method could be applied to the synthesis of various fused bicyclic products in moderate-to-good yields.
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Affiliation(s)
- Yoichi Dokai
- Department of Chemistry, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Tsukasa Amemiya
- Department of Chemistry, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Tohru Yamada
- Department of Chemistry, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Kodai Saito
- Course of Science Education, Faculty of Education, Hokkaido University of Education, Asahikawa Campus, Hokumon-cho 9, Asahikawa 070-8621, Japan
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3
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Brites NP, Dilelio MC, Schumacher RF, Kaufman TS, Silveira CC. A Convenient Wittig‐Horner Mediated Synthesis of 3‐Vinylsulfide Derivatives of Indoles. ChemistrySelect 2022. [DOI: 10.1002/slct.202201350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nathan P. Brites
- Departamento de Química Universidade Federal de Santa Maria Santa Maria RS 97105-900 Brazil
| | - Marina C. Dilelio
- Departamento de Química Universidade Federal de Santa Maria Santa Maria RS 97105-900 Brazil
| | - Ricardo F. Schumacher
- Departamento de Química Universidade Federal de Santa Maria Santa Maria RS 97105-900 Brazil
| | - Teodoro S. Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR) Suipacha 531 Rosario, SF S2002LRK Argentina
| | - Claudio C. Silveira
- Departamento de Química Universidade Federal de Santa Maria Santa Maria RS 97105-900 Brazil
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4
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Chen Y, Ling J, Keto AB, He Y, Low K, Krenske EH, Chiu P. Chemoselective and Diastereoselective Intramolecular (3+2) Cycloadditions of Epoxy and Aziridinyl Enolsilanes. Angew Chem Int Ed Engl 2022; 61:e202116099. [DOI: 10.1002/anie.202116099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Yueyao Chen
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Jesse Ling
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Angus B. Keto
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane QLD 4072 Australia
| | - Yun He
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Kam‐Hung Low
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Elizabeth H. Krenske
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane QLD 4072 Australia
| | - Pauline Chiu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
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5
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Chen Y, Ling J, Keto AB, He Y, Low KH, Krenske EH, Chiu P. Chemoselective and Diastereoselective Intramolecular (3+2) Cycloadditions of Epoxy and Aziridinyl Enolsilanes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yueyao Chen
- The University of Hong Kong Chemistry Pokfulam Road 999077 Hong Kong HONG KONG
| | - Jesse Ling
- The University of Hong Kong Chemistry HONG KONG
| | - Angus B. Keto
- The University of Queensland School of Chemistry and Molecular Biosciences AUSTRALIA
| | - Yun He
- The University of Hong Kong Chemistry HONG KONG
| | | | - Elizabeth H. Krenske
- The University of Queensland School of Chemistry and Molecular Biosciences AUSTRALIA
| | - Pauline Chiu
- The University of Hong Kong Department of Chemistry and State Key Laboratory of Synthetic Chemistry Pokfulam Road 00000 Hong Kong HONG KONG
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6
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Metternich JB, Reiterer M, Jacobsen EN. Asymmetric Nazarov Cyclizations of Unactivated Dienones by Hydrogen-Bond-Donor/Lewis Acid Co-Catalyzed, Enantioselective Proton-Transfer. Adv Synth Catal 2020; 362:4092-4097. [PMID: 33162875 PMCID: PMC7643875 DOI: 10.1002/adsc.202000831] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Indexed: 12/15/2022]
Abstract
We report an enantioselective Nazarov cyclization catalyzed by chiral hydrogen-bond-donors in concert with silyl Lewis acids. The developed transformation provides access to tri-substituted cyclopentenones in high levels of enantioselectivity (up to 95% e.e.) from a variety of simple unactivated dienones. Kinetic and mechanistic studies are consistent with a reversible 4π-electrocyclization C-C bond-forming step followed by rate- and enantio-determining proton-transfer as the mode of catalysis.
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Affiliation(s)
- Jan B Metternich
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Martin Reiterer
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Eric N Jacobsen
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
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7
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William R, Wang S, Mallick A, Liu XW. Interrupting Nazarov Reaction with Different Trapping Modality: Utilizing Potassium Alkynyltrifluoroborate as a σ-Nucleophile. Org Lett 2016; 18:4458-61. [DOI: 10.1021/acs.orglett.6b01606] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ronny William
- Division
of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Siming Wang
- Division
of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Asadulla Mallick
- Division
of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Xue-Wei Liu
- Division
of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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8
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Morgan TDR, LeFort FM, Li Z, Marx VM, Boyd RJ, Burnell DJ. Interception of Nazarov Reactions of Allenyl Vinyl Ketones with Dienes: (3+2)- versus (4+3)-Cycloaddition and Subsequent Rearrangement. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403618] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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9
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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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10
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Wenz DR, Read de Alaniz J. The Nazarov Cyclization: A Valuable Method to Synthesize Fully Substituted Carbon Stereocenters. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402825] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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11
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William R, Wang S, Ding F, Arviana EN, Liu XW. Interrupted Imino-Nazarov Cyclization of 1-Aminopentadienyl Cation and Related Cascade Process. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405251] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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William R, Wang S, Ding F, Arviana EN, Liu XW. Interrupted Imino-Nazarov Cyclization of 1-Aminopentadienyl Cation and Related Cascade Process. Angew Chem Int Ed Engl 2014; 53:10742-6. [DOI: 10.1002/anie.201405251] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 06/23/2014] [Indexed: 11/07/2022]
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13
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Wu YK, West FG. Formal Homologous Aldol Reactions: Interrupting the Nazarov Cyclization via Carboalkoxylation of Alkynes. Org Lett 2014; 16:2534-7. [DOI: 10.1021/ol500914a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yen-Ku Wu
- Department
of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry
Center, Edmonton, AB T6G
2G2, Canada
| | - F. G. West
- Department
of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry
Center, Edmonton, AB T6G
2G2, Canada
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14
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Scadeng O, West FG. Ready Access to Alkylidenecyclopentenones by Nazarov Cyclization/β-Elimination of 2-Hydroxyalkyl-1,4-dien-3-ones. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301537] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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15
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16
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Wu YK, McDonald R, West FG. Homologous Mukaiyama Reactions via Trapping of the Nazarov Intermediate with Silyloxyalkenes. Org Lett 2011; 13:3584-7. [DOI: 10.1021/ol201125h] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yen-Ku Wu
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, AB T6G 2G2, Canada
| | - Robert McDonald
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, AB T6G 2G2, Canada
| | - F. G. West
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, AB T6G 2G2, Canada
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17
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Scadeng O, Ferguson MJ, West FG. Intermolecular [3 + 3]-Cycloadditions of Azides with the Nazarov Intermediate. Org Lett 2010; 13:114-7. [DOI: 10.1021/ol102651k] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Owen Scadeng
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, AB, T6G 2G2, Canada
| | - Michael J. Ferguson
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, AB, T6G 2G2, Canada
| | - F. G. West
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, AB, T6G 2G2, Canada
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18
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Hazarkhani H, Kumar P, Kondiram KS, Shafi Gadwal IM. Highly Selective Claisen–Schmidt Condensation Catalyzed by Silica Chloride Under Solvent-Free Reaction Conditions. SYNTHETIC COMMUN 2010. [DOI: 10.1080/00397910903340637] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Hassan Hazarkhani
- a Division of Organic Chemistry, National Chemical Laboratory , Pune, India
| | - Pradeep Kumar
- a Division of Organic Chemistry, National Chemical Laboratory , Pune, India
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19
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Marx VM, Burnell DJ. Nazarov cyclizations of an allenyl vinyl ketone with interception of the oxyallyl cation intermediate for the formation of carbon-carbon bonds. J Am Chem Soc 2010; 132:1685-9. [PMID: 20078119 DOI: 10.1021/ja909073r] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of an allenyl vinyl ketone with BF(3) x Et(2)O leads to a cyclic oxyallyl cation by a Nazarov reaction, and when this reaction is conducted in the presence of an acyclic diene, [4 + 3] and [3 + 2] products are obtained efficiently with high regio- and stereoselectivity. The proportion of [4 + 3] to [3 + 2] product depends on the substitution on the diene. Cyclic dienes react with the oxyallyl cation by forming only one carbon-carbon bond, but the site of bond formation can be affected by steric hindrance. Electron-rich alkenes intercept the allyl cation by forming one carbon-carbon bond, or two carbon-carbon bonds through [3 + 2] cyclization. In some instances, further treatment of the initial products with BF(3) x Et(2)O leads to equilibrated products in good yield.
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Affiliation(s)
- Vanessa M Marx
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia B3H 4J3, Canada
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20
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Marx VM, Cameron TS, Burnell DJ. Formation of halogenated cyclopent-2-enone derivatives by interrupted Nazarov cyclizations. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.10.052] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Nishiyama Y, Ohnishi H, Koguma Y. Cesium Salt-Catalyzed Addition of Diphenyl Dichalcogenides to Alkynes: Selective Synthesis of Bis- and Mono(phenylchalcogeno)alkenes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2009. [DOI: 10.1246/bcsj.82.1170] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Marx VM, Burnell DJ. Synthesis of 5-hydroxycyclopent-2-enones from allenyl vinyl ketones via an interrupted Nazarov cyclization. Org Lett 2009; 11:1229-31. [PMID: 19215105 DOI: 10.1021/ol900029d] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of an allenyl vinyl ketone with trifluoroacetic acid leads to Nazarov cyclization, and the intermediate carbocation is trapped efficiently by trifluoroacetate. Hydrolysis of the ester with methanol and basic alumina provides, in good to excellent overall yield, a 5-hydroxycyclopent-2-enone in which the alcohol is predominantly trans to a substituent at C-4.
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Affiliation(s)
- Vanessa M Marx
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J3
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23
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Grant TN, Rieder CJ, West FG. Interrupting the Nazarov reaction: domino and cascade processes utilizing cyclopentenyl cations. Chem Commun (Camb) 2009:5676-88. [PMID: 19774236 DOI: 10.1039/b908515g] [Citation(s) in RCA: 226] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Tina N Grant
- Department of Chemistry, Faculty of Science, E3-43 Gunning-Lemieux Chemistry Centre, University of Alberta, Edmonton, AB, Canada T6G 2G2
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24
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Harmata M, Huang C, Rooshenas P, Schreiner P. An Interrupted [4+3] Cycloaddition Reaction: A Hydride Shift (Ene Reaction) Intervenes. Angew Chem Int Ed Engl 2008; 47:8696-9. [DOI: 10.1002/anie.200803487] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Harmata M, Huang C, Rooshenas P, Schreiner P. An Interrupted [4+3] Cycloaddition Reaction: A Hydride Shift (Ene Reaction) Intervenes. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200803487] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Abstract
A carbon-terminated interrupted Nazarov reaction is described. The trimethylsilyl enol ethers derived from propargyl vinyl ketones undergo selective proton transfer at the distal acetylenic carbon atom to provide allenyl vinyl ketones as transient intermediates. In the presence of indoles, a cascade of reactions is initiated that converts the initially formed pentadienyl cations to cyclopentenones bearing a quaternary alpha carbon atom.
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Affiliation(s)
- Ashok K Basak
- Department of Chemistry, 2545 The Mall, University of Hawaii, Honolulu, Hawaii 96822, USA
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27
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Rieder CJ, Fradette RJ, West FG. Construction of aryl-substituted triquinanes through the interrupted Nazarov reaction. Chem Commun (Camb) 2008:1572-4. [PMID: 18354803 DOI: 10.1039/b800800k] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first examples of intermolecular trapping of Nazarov cyclopentenyl cation intermediates by simple arenes to furnish alpha-arylcyclopentanones are described.
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Affiliation(s)
- Curtis J Rieder
- Department of Chemistry, University of Alberta, E3-43 Gunning-Lemieux Chemistry Centre, Edmonton, AB, Canada T6G 2G2
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