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Qin Q, Luo X, Wei J, Zhu Y, Wen X, Song S, Jiao N. Acetonitrile Activation: An Effective Two‐Carbon Unit for Cyclization. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900947] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Qixue Qin
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Xiao Luo
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Jialiang Wei
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Yuchao Zhu
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Xiaojin Wen
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Song Song
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesEast China Normal University Shanghai 200062 China
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Qin Q, Luo X, Wei J, Zhu Y, Wen X, Song S, Jiao N. Acetonitrile Activation: An Effective Two-Carbon Unit for Cyclization. Angew Chem Int Ed Engl 2019; 58:4376-4380. [PMID: 30715785 DOI: 10.1002/anie.201900947] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Indexed: 11/08/2022]
Abstract
A novel activation of acetonitrile for the construction of cyclobutenones by [2+2] cyclization was developed. Acetonitrile is utilized for the first time as two-carbon (C2) cyclization building block. The present protocol successfully inhibits the competitive cycloaddition with the C≡N bond of acetonitrile, but enables the in situ formation of an unsaturated carbon-carbon bond and the subsequent cycloaddition as a C2 unit. This chemistry features simple reaction conditions, high chemoselectivities, wide substrate scope, and offers a new and practical approach to cyclobutenones and cyclobuteneimines.
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Affiliation(s)
- Qixue Qin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Xiao Luo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Jialiang Wei
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Yuchao Zhu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Xiaojin Wen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Song Song
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China.,Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai, 200062, China
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Grossmann AS, Magauer T. Trihaloethenes as versatile building blocks for organic synthesis. Org Biomol Chem 2016; 14:5377-89. [DOI: 10.1039/c6ob00091f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Trihaloethenes are versatile C2-building blocks that can be simply modified via addition, elimination and transition metal-catalyzed reactions.
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Affiliation(s)
- Adriana S. Grossmann
- Department of Chemistry
- Ludwig-Maximilians-Universität München
- 81377 München
- Germany
| | - Thomas Magauer
- Department of Chemistry
- Ludwig-Maximilians-Universität München
- 81377 München
- Germany
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Dalkılıç E, Daştan A. Synthesis of cyclopentadiene derivatives by retro-Diels–Alder reaction of norbornadiene derivatives. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Nişanci B, Dalkiliç E, Güney M, Daştan A. Synthesis and Diels-Alder cycloaddition reaction of norbornadiene and benzonorbornadiene dimers. Beilstein J Org Chem 2009; 5:39. [PMID: 19777139 PMCID: PMC2748719 DOI: 10.3762/bjoc.5.39] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2009] [Accepted: 08/07/2009] [Indexed: 11/23/2022] Open
Abstract
Dimeric forms of norbornadiene and benzonorbornadiene were synthesized starting with known monobromide derivatives. The Diels–Alder cycloaddition reaction of dimers with TCNE and PTAD was investigated and new norbornenoid polycyclics were obtained. All compounds were characterized properly using NMR spectroscopy.
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Affiliation(s)
- Bilal Nişanci
- Atatürk University, Faculty of Science, Department of Chemistry, 25240 Erzurum-TURKEY
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Dalkılıç E, Güney M, Daştan A, Saracoglu N, Lucchi OD, Fabris F. Novel and versatile protocol for the preparation of functionalized benzocyclotrimers. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.02.070] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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