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1
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Volpe C, Meninno S, Roselli A, Mancinelli M, Mazzanti A, Lattanzi A. Nitrone/Imine Selectivity Switch in Base‐Catalysed Reaction of Aryl Acetic Acid Esters with Nitrosoarenes: Joint Experimental and Computational Study. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000855] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Chiara Volpe
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II, 132 84084 Fisciano Italy
| | - Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II, 132 84084 Fisciano Italy
| | - Angelo Roselli
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II, 132 84084 Fisciano Italy
| | - Michele Mancinelli
- Department of Industrial Chemistry “Toso Montanari” University of Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Andrea Mazzanti
- Department of Industrial Chemistry “Toso Montanari” University of Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II, 132 84084 Fisciano Italy
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2
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Zhang M, Liu S, Li H, Guo Y, Li N, Guan M, Mehfooz H, Zhao J, Zhang Q. Copper‐Catalyzed Cope‐Type Hydroamination of Nonactivated Olefins toward Cyclic Nitrones: Scope, Mechanism, and Enantioselective Process Development. Chemistry 2019; 25:12620-12627. [DOI: 10.1002/chem.201902683] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/19/2019] [Indexed: 01/13/2023]
Affiliation(s)
- Mengru Zhang
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Shuang Liu
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Hexin Li
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Yajing Guo
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Na Li
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Meihui Guan
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Haroon Mehfooz
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Jinbo Zhao
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Qian Zhang
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
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3
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Wang C, Cui Q, Zhang Z, Yao ZJ, Wang S, Yu ZX. Divergent Synthesis of Oxa-Cyclic Nitrones through Gold(I)-Catalyzed 1,3-Azaprotio Transfer of Propargylic α-Ketocarboxylate Oximes: Experimental and DFT Studies. Chemistry 2019; 25:9821-9826. [PMID: 31090114 DOI: 10.1002/chem.201901522] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/12/2019] [Indexed: 11/09/2022]
Abstract
1,3-Azaprotio transfer of propargylic α-ketocarboxylate oximes, a new type of alkynyl oximes featuring an ester tether, has been explored by taking advantage of gold catalysis. The incorporation of an oxygen atom to the chain of alkynyl oximes led to the formation of two different oxa-cyclic nitrones. It was found that internal alkynyl oximes with an E-configuration deliver five-membered nitrones, whereas terminal alkynyl oximes with an E-configuration afford six-membered nitrones. DFT calculations on four possible pathways supported a stepwise formation of C-N and C-H bonds, in which a 1,3-acyloxy-migration competes with the 1,3-azaprotio-transfer, especially in the case of internal alkynyl oximes. The relative nucleophilic properties of oxygen in the carbonyl group and the nitrogen in the oxime, the electronic effects of alkynes, and the influence of the ring system have been investigated computationally.
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Affiliation(s)
- Chunhong Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Qi Cui
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular, Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing, 100871, China
| | - Zhixin Zhang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zhu-Jun Yao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Shaozhong Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for 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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4
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Liu M, Zhou T, Zhang M, Zhao J, Zhang Q. Palladium(II)‐Catalyzed Cope‐Type Hydroamination: Efficient Access to Five and Six‐Membered Cyclic Nitrones. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Mingzhu Liu
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Tingting Zhou
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Mengru Zhang
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Jinbo Zhao
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Qian Zhang
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry, CAS Shanghai 200032 P. R. China
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6
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Hong Z, Ong DY, Muduli SK, Too PC, Chan GH, Tnay YL, Chiba S, Nishiyama Y, Hirao H, Soo HS. Understanding the Origins of Nucleophilic Hydride Reactivity of a Sodium Hydride-Iodide Composite. Chemistry 2016; 22:7108-14. [PMID: 27038135 DOI: 10.1002/chem.201600340] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Indexed: 12/14/2022]
Abstract
Sodium hydride (NaH) has been commonly used as a Brønsted base in chemical syntheses, while it has rarely been employed to add hydride (H(-) ) to unsaturated electrophiles. We previously developed a procedure to activate NaH through the addition of a soluble iodide source and found that the new NaH-NaI composite can effect even stereoselective nucleophilic hydride reductions of nitriles, imines, and carbonyl compounds. In this work, we report that mixing NaH with NaI or LiI in tetrahydrofuran (THF) as a solvent provides a new inorganic composite, which consists of NaI interspersed with activated NaH, as revealed by powder X-ray diffraction, and both solid-state NMR and X-ray photoelectron spectroscopies. DFT calculations imply that this remarkably simple inorganic composite, which is comprised of NaH and NaI, gains nucleophilic hydridic character similar to covalent hydrides, resulting in unprecedented and unique hydride donor chemical reactivity.
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Affiliation(s)
- Zonghan Hong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Derek Yiren Ong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Subas Kumar Muduli
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.,Energy Research Institute@NTU, Nanyang Technological University, Research Techno Plaza, Singapore, 637553, Singapore
| | - Pei Chui Too
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Guo Hao Chan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Ya Lin Tnay
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Shunsuke Chiba
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
| | - Yusuke Nishiyama
- RIKEN CLST-JEOL Collaboration Center, Yokohama, Kanagawa 230-0045 (Japan). .,JEOL RESONANCE Inc. Akishima, Tokyo, 196-8558, Japan.
| | - Hajime Hirao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
| | - Han Sen Soo
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore. .,Solar Fuels Laboratory, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 637553, Singapore. .,Singapore-Berkeley Research Initiative for Sustainable Energy (SinBeRISE), 1 Create Way, Singapore, 138602, Singapore.
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7
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Kaga A, Peng X, Hirao H, Chiba S. Diastereo‐Divergent Synthesis of Saturated Azaheterocycles Enabled by
t
BuOK‐Mediated Hydroamination of Alkenyl Hydrazones. Chemistry 2015; 21:19112-8. [DOI: 10.1002/chem.201504160] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Indexed: 01/26/2023]
Affiliation(s)
- Atsushi Kaga
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)
| | - Xingao Peng
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)
| | - Hajime Hirao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)
| | - Shunsuke Chiba
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)
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