1
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Joyce LM, Drew MA, Tague AJ, Thaima T, Gouranourimi A, Ariafard A, Pyne SG, Hyland C. A Rare Alder-ene Cycloisomerisation of 1,6-Allenynes. Chemistry 2021; 28:e202104022. [PMID: 34971450 DOI: 10.1002/chem.202104022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Indexed: 11/06/2022]
Abstract
Thermally induced cycloisomerization reactions of 1,6-allenynes gives α-methylene-γ-lactams via intramolecular Alder-ene reactions. The mechanism is supported by computational and deuterium labeling studies. This thermal, non-radical method enables the discovery of a hitherto unknown route that proceeds via a divergent mechanism distinct from the previous [2+2] cycloisomerization manifold.
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Affiliation(s)
- Liam M Joyce
- University of Wollongong Faculty of Science: University of Wollongong Faculty of Science Medicine and Health, Chemistry, AUSTRALIA
| | - Melanie A Drew
- University of Wollongong Faculty of Science: University of Wollongong Faculty of Science Medicine and Health, chemistry, AUSTRALIA
| | - Andrew J Tague
- University of Wollongong Faculty of Science: University of Wollongong Faculty of Science Medicine and Health, Chemistry, AUSTRALIA
| | - Thanaphat Thaima
- University of Wollongong Faculty of Science: University of Wollongong Faculty of Science Medicine and Health, chemistry, AUSTRALIA
| | | | | | - Stephen G Pyne
- University of Wollongong Faculty of Science: University of Wollongong Faculty of Science Medicine and Health, Chemistry, AUSTRALIA
| | - Christopher Hyland
- University of Wollongong, School of Chemistry, Northfields Avenue, 2522, Wollongong, AUSTRALIA
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2
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Ding W, Yoshikai N. Cobalt-Catalyzed Intermolecular [2+2] Cycloaddition between Alkynes and Allenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813283] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Wei Ding
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
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3
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Ding W, Yoshikai N. Cobalt-Catalyzed Intermolecular [2+2] Cycloaddition between Alkynes and Allenes. Angew Chem Int Ed Engl 2019; 58:2500-2504. [PMID: 30614605 DOI: 10.1002/anie.201813283] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 12/26/2018] [Indexed: 12/25/2022]
Abstract
An intermolecular [2+2] cycloaddition reaction between an alkyne and an allene is reported. In the presence of a cobalt(I)/diphosphine catalyst, a near equimolar mixture of the alkyne and allene is converted into a 3-alkylidenecyclobutene derivative in good yield with high regioselectivity. The reaction tolerates a variety of internal alkynes and mono- or disubstituted allenes bearing various functional groups. The reaction is proposed to involve regioselective oxidative cyclization of the alkyne and allene to form a 4-alkylidenecobaltacyclopentene intermediate, with subsequent C-C reductive elimination.
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Affiliation(s)
- Wei Ding
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
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4
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Kramm F, Teske J, Ullwer F, Frey W, Plietker B. Anellierte Cyclobutane durch Fe‐katalysierte Cycloisomerisierung von Eninacetaten. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Frederik Kramm
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Johannes Teske
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Franziska Ullwer
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Wolfgang Frey
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Bernd Plietker
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
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5
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Kramm F, Teske J, Ullwer F, Frey W, Plietker B. Annelated Cyclobutanes by Fe‐Catalyzed Cycloisomerization of Enyne Acetates. Angew Chem Int Ed Engl 2018; 57:13335-13338. [DOI: 10.1002/anie.201806693] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Frederik Kramm
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Johannes Teske
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Franziska Ullwer
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Wolfgang Frey
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Bernd Plietker
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
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6
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Liu F, Wang JY, Zhou P, Li G, Hao WJ, Tu SJ, Jiang B. Merging [2+2] Cycloaddition with Radical 1,4-Addition: Metal-Free Access to Functionalized Cyclobuta[a
]naphthalen-4-ols. Angew Chem Int Ed Engl 2017; 56:15570-15574. [DOI: 10.1002/anie.201707615] [Citation(s) in RCA: 168] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 08/26/2017] [Indexed: 01/18/2023]
Affiliation(s)
- Feng Liu
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Jia-Yin Wang
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Peng Zhou
- Institute of Chemistry & BioMedical Sciences; Collaborative Innovation Center of Chemistry for Life Sciences; Nanjing University; Nanjing 210093 P. R. China
| | - Guigen Li
- Institute of Chemistry & BioMedical Sciences; Collaborative Innovation Center of Chemistry for Life Sciences; Nanjing University; Nanjing 210093 P. R. China
- Department of Chemistry and Biochemistry; Texas Tech University; Lubbock Texas 79409-1061 USA
| | - Wen-Juan Hao
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Bo Jiang
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
- Department of Chemistry and Biochemistry; Texas Tech University; Lubbock Texas 79409-1061 USA
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7
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Liu F, Wang JY, Zhou P, Li G, Hao WJ, Tu SJ, Jiang B. Merging [2+2] Cycloaddition with Radical 1,4-Addition: Metal-Free Access to Functionalized Cyclobuta[a
]naphthalen-4-ols. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707615] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Feng Liu
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Jia-Yin Wang
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Peng Zhou
- Institute of Chemistry & BioMedical Sciences; Collaborative Innovation Center of Chemistry for Life Sciences; Nanjing University; Nanjing 210093 P. R. China
| | - Guigen Li
- Institute of Chemistry & BioMedical Sciences; Collaborative Innovation Center of Chemistry for Life Sciences; Nanjing University; Nanjing 210093 P. R. China
- Department of Chemistry and Biochemistry; Texas Tech University; Lubbock Texas 79409-1061 USA
| | - Wen-Juan Hao
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Bo Jiang
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
- Department of Chemistry and Biochemistry; Texas Tech University; Lubbock Texas 79409-1061 USA
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8
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Kang T, Ge S, Lin L, Lu Y, Liu X, Feng X. A Chiral
N
,
N′
‐Dioxide–Zn
II
Complex Catalyzes the Enantioselective [2+2] Cycloaddition of Alkynones with Cyclic Enol Silyl Ethers. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600801] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Tengfei Kang
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Shulin Ge
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Yan Lu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
- Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072 China
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9
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Kang T, Ge S, Lin L, Lu Y, Liu X, Feng X. A Chiral
N
,
N′
‐Dioxide–Zn
II
Complex Catalyzes the Enantioselective [2+2] Cycloaddition of Alkynones with Cyclic Enol Silyl Ethers. Angew Chem Int Ed Engl 2016; 55:5541-4. [DOI: 10.1002/anie.201600801] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Tengfei Kang
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Shulin Ge
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Yan Lu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
- Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072 China
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10
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Li Q, Fu C, Ma S. Palladium‐Catalyzed Asymmetric Amination of Allenyl Phosphates: Enantioselective Synthesis of Allenes with an Additional Unsaturated Unit. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402647] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Qiankun Li
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang (P.R. China)
| | - Chunling Fu
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang (P.R. China)
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang (P.R. China)
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11
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Palladium‐Catalyzed Asymmetric Amination of Allenyl Phosphates: Enantioselective Synthesis of Allenes with an Additional Unsaturated Unit. Angew Chem Int Ed Engl 2014; 53:6511-4. [DOI: 10.1002/anie.201402647] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Indexed: 11/07/2022]
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12
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Hori H, Arai S, Nishida A. A 2-Benzothiazolylphenyl Group Accelerates the Intramolecular [2+2] Cycloaddition of Allene-Ynes. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300218] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Alajarin M, Bonillo B, Marin-Luna M, Sanchez-Andrada P, Vidal A. Thermal Cyclization of Phenylallenes That Containortho-1,3-Dioxolan-2-yl Groups: New Cascade Reactions Initiated by 1,5-Hydride Shifts of Acetalic H Atoms. Chemistry 2013; 19:16093-103. [PMID: 24123192 DOI: 10.1002/chem.201301608] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 08/23/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Mateo Alajarin
- Departamento de Química Orgánica, Universidad de Murcia, Facultad de Química, Regional Campus of International Excellence, "Campus Mare Nostrum", Espinardo, 30100 Murcia (Spain).
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14
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Chen K, Sun R, Xu Q, Wei Y, Shi M. Thermal induced intramolecular [2 + 2] cycloaddition of allene-ACPs. Org Biomol Chem 2013; 11:3949-53. [DOI: 10.1039/c3ob40911b] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Ma J, Peng L, Zhang X, Zhang Z, Campbell M, Wang J. InI3- or ZnI2-Catalyzed Reaction of Hydroxylated 1,5-Allenynes with Thiols: A New Access to 3,5-Disubstituted Toluene Derivatives. Chem Asian J 2010; 5:2214-20. [PMID: 20677194 DOI: 10.1002/asia.201000267] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jie Ma
- Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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16
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Li Z, Fu Y, Zhang SL, Guo QX, Liu L. Heck-Type Reactions of Imine Derivatives: A DFT Study. Chem Asian J 2010; 5:1475-86. [DOI: 10.1002/asia.200900744] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Alcaide B, Almendros P, Aragoncillo C. Generating Complexity from Simplicity: Pd-Catalyzed or Cu-Promoted Domino Alkyne Homocoupling/Double [2+2] Allenyne Cycloaddition. Chemistry 2009; 15:9987-9. [DOI: 10.1002/chem.200901574] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Zhao JF, Loh TP. Acid-Catalyzed Intramolecular [2+2] Cycloaddition of Ene-allenones: Facile Access to Bicyclo[n.2.0] Frameworks. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200902471] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Zhao JF, Loh TP. Acid-Catalyzed Intramolecular [2+2] Cycloaddition of Ene-allenones: Facile Access to Bicyclo[n.2.0] Frameworks. Angew Chem Int Ed Engl 2009; 48:7232-5. [DOI: 10.1002/anie.200902471] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Hu Y, Song F, Wu F, Cheng D, Wang S. Efficient Construction of Tri- and Tetracyclic Heterocycles from Linear 1,6-Dienes by a Domino Reaction. Chemistry 2008; 14:3110-7. [PMID: 18257004 DOI: 10.1002/chem.200702035] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yimin Hu
- Anhui Key Laboratory of Functional Molecular Solids, Institute of Organic Chemistry, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China.
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21
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Zriba R, Gandon V, Aubert C, Fensterbank L, Malacria M. Alkyne versus Allene Activation in Platinum- and Gold-Catalyzed Cycloisomerization of Hydroxylated 1,5-Allenynes. Chemistry 2008; 14:1482-91. [DOI: 10.1002/chem.200701522] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Kimura M, Horino Y, Mori M, Tamaru Y. Chameleon Reactivity of the Allene Bond of 4-Vinylidene-2-oxazolidinone: Novel Through-Space Conjugative Nucleophilic Addition of Electron-Rich Alkenes and Hetero-Nucleophiles. Chemistry 2007; 13:9686-702. [PMID: 17768719 DOI: 10.1002/chem.200700691] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The Calpha==Cbeta double bond of allene carbamates 1 serves as an electron acceptor similar to the double bond of conjugated enones by means of a through-space interaction with the N--SO2 bond; the carbamate double bond is thus subject to nucleophilic addition for a wide variety of nucleophiles, which proceeds under mild conditions by heating at 70-100 degrees C. Depending on the kind of nucleophiles, 1 displays three different reaction modes: 1) Typically enol ethers and allylsilanes promote 1,3-sulfonyl migration of 1 and undergo the inverse electron demand Diels-Alder reaction with the 1-aza-1,3-butadiene intermediates II thus formed to furnish bicyclic 2-alkoxy-5-sulfonyltetrahydropyridines 2 and 2-silylmethyl-5-sulfonyltetrahydropyridines 3, respectively, with high regio- and stereoselectivity and retention of configuration of the double bonds of these electron-rich alkenes; 2) silanes (RnSiH4-n, n=1-3) and thiols deliver the hydride and the thiolate at the Cbeta carbon and promote the 1,3-sulfonyl migration, followed by protonation of the thus-formed carbamate anion (Z)-III to provide, for example, (Z)-4 a and (Z)-4 j, respectively; 3) alcohols simply add to the Calpha==Cbeta double bond and provide (E)-6. Usually, the reaction with alcohols is accompanied by the second pathway, giving rise to, for example, (Z)-4 b in addition to (E)-6 b. Phenol engages in the third pathway and provides (E)-6 g exclusively. Heteroaromatics, such as furans and benzofurans follow the first pathway, however, in a different regioselectivity from enol ethers and allylsilanes, delivering the oxygen atom at the 3-position of 5-sulfonyltetrahydropyridines (2 g and 2 h). Indoles, on the other hand, show a dichotomy, equally enjoying the first and the third pathways and provide mixtures of (E)-7 and (E)-8, respectively.
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Affiliation(s)
- Masanari Kimura
- Graduate School of Science and Technology, Department of Applied Chemistry, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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Tarselli M, Chianese A, Lee S, Gagné M. Gold(I)-Catalyzed Asymmetric Cycloisomerization of Eneallenes into Vinylcyclohexenes. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200701959] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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Tarselli MA, Chianese AR, Lee SJ, Gagné MR. Gold(I)-Catalyzed Asymmetric Cycloisomerization of Eneallenes into Vinylcyclohexenes. Angew Chem Int Ed Engl 2007; 46:6670-3. [PMID: 17661298 DOI: 10.1002/anie.200701959] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Michael A Tarselli
- University of North Carolina - Chapel Hill, Chapel Hill, NC 27599-3290, USA
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25
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Ohno H, Aso A, Kadoh Y, Fujii N, Tanaka T. Heck-Type Cyclization of Oxime Ethers: Stereoselective Carbon–Carbon Bond Formation with Aryl Halides To Produce Heterocyclic Oximes. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200701868] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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26
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Ohno H, Aso A, Kadoh Y, Fujii N, Tanaka T. Heck-Type Cyclization of Oxime Ethers: Stereoselective Carbon-Carbon Bond Formation with Aryl Halides To Produce Heterocyclic Oximes. Angew Chem Int Ed Engl 2007; 46:6325-8. [PMID: 17640020 DOI: 10.1002/anie.200701868] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.
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27
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Ohno H, Ohta Y, Oishi S, Fujii N. Direct Synthesis of 2-(Aminomethyl)indoles through Copper(I)-Catalyzed Domino Three-Component Coupling and Cyclization Reactions. Angew Chem Int Ed Engl 2007; 46:2295-8. [PMID: 17300118 DOI: 10.1002/anie.200604342] [Citation(s) in RCA: 144] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.
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28
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Ohno H, Ohta Y, Oishi S, Fujii N. Direct Synthesis of 2-(Aminomethyl)indoles through Copper(I)-Catalyzed Domino Three-Component Coupling and Cyclization Reactions. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200604342] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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Jiang X, Cheng X, Ma S. Controllable [2+2] cycloadditions of 1,5-bisallenyl-substituted compounds. Angew Chem Int Ed Engl 2007; 45:8009-13. [PMID: 17083138 DOI: 10.1002/anie.200602847] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xuefeng Jiang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, P.R. China
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30
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Jiang X, Cheng X, Ma S. Controllable [2+2] Cycloadditions of 1,5-Bisallenyl-Substituted Compounds. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200602847] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Alcaide B, Almendros P, Aragoncillo C, Redondo MC, Torres MR. Synthesis of Strained Tricyclic β-Lactams by Intramolecular [2+2] Cycloaddition Reactions of 2-Azetidinone-Tethered Enallenols: Control of Regioselectivity by Selective Alkene Substitution. Chemistry 2006; 12:1539-46. [PMID: 16294361 DOI: 10.1002/chem.200500807] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A convenient metal-free methodology for the preparation of structurally novel, strained tricyclic beta-lactams containing a cyclobutane ring has been developed. The first examples accounting for the intramolecular [2+2] cycloaddition reactions in beta-lactams have been achieved by the thermolysis of 2-azetidinone-tethered enallenols, which have been prepared in aqueous media by regio- and diastereoselective indium-mediated carbonyl allenylation of 4-oxoazetidine-2-carbaldehydes. Notably, the regioselectivity of the cycloaddition can be tuned in the allene component just by a subtle variation in the substitution pattern of the alkene component.
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Affiliation(s)
- Benito Alcaide
- Departamento de Química Orgánica I, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain.
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