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Zheng J, Tang J, Jin S, Hu H, Jiang ZJ, Chen J, Bai JF, Gao Z. Site-Selective Deuteration of α-Amino Esters with 2-Hydroxynicotinaldehyde as a Catalyst. ACS OMEGA 2024; 9:26963-26972. [PMID: 38947810 PMCID: PMC11209932 DOI: 10.1021/acsomega.3c09974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/27/2024] [Accepted: 05/31/2024] [Indexed: 07/02/2024]
Abstract
An efficient method has been developed for the synthesis of α-deuterated α-amino esters via hydrogen isotope exchange of α-amino esters in D2O with 2-hydroxynicotinaldehyde as a catalyst under mild conditions. This methodology exhibits a wide range of substrate scopes, remarkable functional group tolerance, and affording the desired products in good yields with excellent deuterium incorporation. Notably, the ortho-hydroxyl group and the pyridine ring of the catalyst play a crucial role in the catalytic activity, which not only stabilizes the carbon-anion intermediates but also enhances the acidity of the amino esters' α-C-H bond.
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Affiliation(s)
- Jinfeng Zheng
- NingboTech-Cuiying
Joint Laboratory of Stable Isotope Technology, School of Biological
and Chemical Engineering, NingboTech University, Ningbo 315100, People’s Republic of China
- School
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s
Republic of China
| | - Jianbo Tang
- NingboTech-Cuiying
Joint Laboratory of Stable Isotope Technology, School of Biological
and Chemical Engineering, NingboTech University, Ningbo 315100, People’s Republic of China
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Shenhao Jin
- NingboTech-Cuiying
Joint Laboratory of Stable Isotope Technology, School of Biological
and Chemical Engineering, NingboTech University, Ningbo 315100, People’s Republic of China
| | - Hao Hu
- NingboTech-Cuiying
Joint Laboratory of Stable Isotope Technology, School of Biological
and Chemical Engineering, NingboTech University, Ningbo 315100, People’s Republic of China
| | - Zhi-Jiang Jiang
- NingboTech-Cuiying
Joint Laboratory of Stable Isotope Technology, School of Biological
and Chemical Engineering, NingboTech University, Ningbo 315100, People’s Republic of China
| | - Jia Chen
- NingboTech-Cuiying
Joint Laboratory of Stable Isotope Technology, School of Biological
and Chemical Engineering, NingboTech University, Ningbo 315100, People’s Republic of China
| | - Jian-Fei Bai
- NingboTech-Cuiying
Joint Laboratory of Stable Isotope Technology, School of Biological
and Chemical Engineering, NingboTech University, Ningbo 315100, People’s Republic of China
| | - Zhanghua Gao
- NingboTech-Cuiying
Joint Laboratory of Stable Isotope Technology, School of Biological
and Chemical Engineering, NingboTech University, Ningbo 315100, People’s Republic of China
- Ningbo
Cuiying Chemical Technology Co. Ltd., Ningbo 315100, People’s Republic of China
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2
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Li S, Zhang C, Wang S, Yang W, Fang X, Fan S, Zhang Q, Li XX, Feng YS. Cooperative Photoredox and N-Heterocyclic Carbene Catalysis Suzuki-Miyaura-Type Reaction: Radical Coupling of Aroyl Fluorides and Alkyl Boronic Acids. Org Lett 2024; 26:1728-1733. [PMID: 38385808 DOI: 10.1021/acs.orglett.4c00334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
An intermolecular Suzuki-Miyaura-type reaction of benzoyl fluorides with alkyl boronic acids to synthetic ketone was revealed by cooperative N-heterocyclic carbene (NHC) and photoredox catalysis. Various alkyl boric acids can be converted into alkyl radicals without external oxidants or activators. Moreover, the catalytic system was feasible for the difunctionalization of styrenes via a radical relay process. Mechanistic experiments suggested that the benzoate anion intermediate might play a unique role in this reaction system.
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Affiliation(s)
- Shihao Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui 230000, China
| | - Chaoyang Zhang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui 230000, China
| | - Sheng Wang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui 230000, China
| | - Wenqing Yang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui 230000, China
| | - Xinru Fang
- Hangzhou Xiaobei Pharmaceutical Technology Co., Ltd, 398 Haida North Road, Hangzhou, Zhejiang 310018, China
| | - Shilu Fan
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui 230000, China
- Anhui Province Key Laboratory of Advance Catalytic Materials and Reaction Engineering, Hefei 230009, China
| | - Qi Zhang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui 230000, China
- Institute of Industry & Equipment Technology, Hefei University of Technology, Hefei 230009, China
| | - Xiao-Xuan Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui 230000, China
- Anhui Province Key Laboratory of Advance Catalytic Materials and Reaction Engineering, Hefei 230009, China
| | - Yi-Si Feng
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui 230000, China
- Anhui Province Key Laboratory of Advance Catalytic Materials and Reaction Engineering, Hefei 230009, China
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Caldarelli M, Rezzi SJ, Colombo N, Pirali T, Papeo G. Photocatalytic Radical Coupling of Organoborates with α-Halogenated Electron-Poor Olefins. J Org Chem 2024; 89:633-643. [PMID: 38079578 DOI: 10.1021/acs.joc.3c02386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Herein, we report the visible-light-mediated addition of organoborates to α-halogenated electron-poor olefins enabled by an environmentally benign metal-free catalyst. The method accommodates a variety of boronic acid derivatives as well as alkenes and delivers the corresponding saturated α-halo-derivatives in up to 90% yields. The obtained products are high-value building blocks in organic synthesis, allowing for a variety of follow-up transformations.
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Affiliation(s)
- Marina Caldarelli
- Nerviano Medical Sciences Srl, viale Pasteur 10, 20014 Nerviano, Milano, Italy
| | - Sarah Jane Rezzi
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | | | - Tracey Pirali
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Gianluca Papeo
- Nerviano Medical Sciences Srl, viale Pasteur 10, 20014 Nerviano, Milano, Italy
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