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Liu W, Cao L, Zhang Z, Zhang G, Huang S, Huang L, Zhao P, Yan X. Mesoionic Carbene–Iridium Complex Catalyzed Ortho-Selective Hydrogen Isotope Exchange of Anilines with High Functional Group Tolerance. Org Lett 2020; 22:2210-2214. [DOI: 10.1021/acs.orglett.0c00402] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Wei Liu
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Lei Cao
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Zengyu Zhang
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Gang Zhang
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Shiqing Huang
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Linwei Huang
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Peng Zhao
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, People’s Republic of China
| | - Xiaoyu Yan
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
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52
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Zhang Y, Ji P, Dong Y, Wei Y, Wang W. Deuteration of Formyl Groups via a Catalytic Radical H/D Exchange Approach. ACS Catal 2020; 10:2226-2230. [PMID: 33623725 PMCID: PMC7899177 DOI: 10.1021/acscatal.9b05300] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
H/D exchange at formyl groups represents the straightforward approach to C-1 deuterated aldehydes. This transformation has been recently realized by transition metal and NHC carbene catalysis. Mechanistically, all these processes involve an ionic pathway. Herein we report a distinct photoredox catalytic, visible light mediated neutral radical approach. Selective control of highly reactive acyl radical in the energy barrier surmountable, reversible reaction enables driving the formation of deuterated products when an excess of D2O is employed. The power of the H/D exchange process has been demonstrated for not only aromatic aldehydes, but also aliphatic substrates, which have been difficult in transitional metal catalyzed H/D exchange reactions, and for selective late-stage deuterium incorporation into complex structures with uniformly high deuteration level (>90%).
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Affiliation(s)
- Yueteng Zhang
- Department of Pharmacology and Toxicology, College of Pharmacy, and BIO5 Institute, University of Arizona, 1703 E. Mabel Street, Tucson, AZ 85721-0207, USA
| | - Peng Ji
- Department of Pharmacology and Toxicology, College of Pharmacy, and BIO5 Institute, University of Arizona, 1703 E. Mabel Street, Tucson, AZ 85721-0207, USA
| | - Yue Dong
- Department of Pharmacology and Toxicology, College of Pharmacy, and BIO5 Institute, University of Arizona, 1703 E. Mabel Street, Tucson, AZ 85721-0207, USA
| | - Yongyi Wei
- Department of Pharmacology and Toxicology, College of Pharmacy, and BIO5 Institute, University of Arizona, 1703 E. Mabel Street, Tucson, AZ 85721-0207, USA
| | - Wei Wang
- Department of Pharmacology and Toxicology, College of Pharmacy, and BIO5 Institute, University of Arizona, 1703 E. Mabel Street, Tucson, AZ 85721-0207, USA
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53
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Zhu N, Su M, Wan WM, Li Y, Bao H. Practical Method for Reductive Deuteration of Ketones with Magnesium and D 2O. Org Lett 2020; 22:991-996. [PMID: 31967845 DOI: 10.1021/acs.orglett.9b04536] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
α-Deuterated alcohols have important applications in pharmaceuticals and mechanism studies. Here, we report a new and practical strategy for the reductive deuteration of ketones using a Mg/BrCH2CH2Br/D2O system, which affords α-deuterated alcohols in good yields and with almost quantitative incorporation of deuterium. The synthetic value of this method has been demonstrated by the easy access to deuterated drugs or drug derivatives. This method may inspire the discovery of other deuterium-containing drugs.
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Affiliation(s)
- Nengbo Zhu
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou , Fujian 350002 , P. R. China
| | - Min Su
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou , Fujian 350002 , P. R. China
| | - Wen-Ming Wan
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou , Fujian 350002 , P. R. China
| | - Yajun Li
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou , Fujian 350002 , P. R. China
| | - Hongli Bao
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West , Fuzhou , Fujian 350002 , P. R. China
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54
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Xu X, Huang S, Zhang Z, Cao L, Yan X. Halogen-bonding-induced diverse aggregation of 4,5-diiodo-1,2,3-triazolium salts with different anions. Beilstein J Org Chem 2020; 16:78-87. [PMID: 32082427 PMCID: PMC7006493 DOI: 10.3762/bjoc.16.10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 12/27/2019] [Indexed: 12/24/2022] Open
Abstract
The synthesis of 4,5-diiodo-1,3-dimesityl-1,2,3-triazolium salts with different anions have been developed. These triazolium salts show diverse aggregation via halogen bonding between C-I bonds and anions. Triazolium with halide anions exists as a tetramer with saddle conformation. Triazolium tetrafluoroborate exists as a trimer with Chinese lantern shape conformation. Triazolium trifluoroacetate and acetate exist as dimers, respectively, while the former shows boat conformation and the latter forms rectangle conformation. Triazolium salts form a linear polymer with polyiodide.
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Affiliation(s)
- Xingyu Xu
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Shiqing Huang
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Zengyu Zhang
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Lei Cao
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Xiaoyu Yan
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
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55
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Rottschäfer D, Glodde T, Neumann B, Stammler HG, Ghadwal RS. A crystalline C5-protonated 1,3-imidazol-4-ylidene. Chem Commun (Camb) 2020; 56:2027-2030. [DOI: 10.1039/c9cc09428h] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The first C5-protonated 1,3-imidazole-based mesoionic carbene (iMICBp) has been isolated and characterized by single-crystal X-ray diffraction.
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Affiliation(s)
- Dennis Rottschäfer
- Molecular Inorganic Chemistry and Catalysis
- Inorganic and Structural Chemistry
- Center for Molecular Materials
- Faculty of Chemistry
- Universität Bielefeld
| | - Timo Glodde
- Molecular Inorganic Chemistry and Catalysis
- Inorganic and Structural Chemistry
- Center for Molecular Materials
- Faculty of Chemistry
- Universität Bielefeld
| | - Beate Neumann
- Molecular Inorganic Chemistry and Catalysis
- Inorganic and Structural Chemistry
- Center for Molecular Materials
- Faculty of Chemistry
- Universität Bielefeld
| | - Hans-Georg Stammler
- Molecular Inorganic Chemistry and Catalysis
- Inorganic and Structural Chemistry
- Center for Molecular Materials
- Faculty of Chemistry
- Universität Bielefeld
| | - Rajendra S. Ghadwal
- Molecular Inorganic Chemistry and Catalysis
- Inorganic and Structural Chemistry
- Center for Molecular Materials
- Faculty of Chemistry
- Universität Bielefeld
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