1
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Valdivia-Berroeta GA, Gonnella NC. N-oxidation Regioselectivity and Risk Prediction Using DFT-ALIE Calculations. Pharm Res 2023; 40:1873-1883. [PMID: 37386273 DOI: 10.1007/s11095-023-03553-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 06/16/2023] [Indexed: 07/01/2023]
Abstract
INTRODUCTION The formation of N-oxide degradants is a major concern in development of new drugs due to potential effects on a compound's pharmacological activity. Such effects include but are not limited to solubility, stability, toxicity, and efficacy. In addition, these chemical transformations can impact physicochemical properties that affect drug manufacturability. Hence identification and control of N-oxide transformations is of critical importance in the development of new therapeutics. OBJECTIVE This study describes the development of an in-silico approach to identify N-oxide formation in APIs with respect to autoxidation. METHODS Average Local Ionization Energy (ALIE) calculations were carried out using molecular modeling techniques and application of Density Functional Theory (DFT) at the B3LYP/6-31G(d,p) level of theory. A total of 257 nitrogen atoms and 15 different oxidizable nitrogen types were used in developing this method. RESULTS The results show that ALIE could be reliably used to predict the most susceptible nitrogen for N-oxide formation. A risk scale was developed that rapidly categorizes nitrogen's oxidative vulnerabilities as small, medium, or high. CONCLUSIONS The developed process presents a powerful tool to identify structural susceptibilities for N-oxidation as well as enabling rapid structure elucidation in resolving potential experimental ambiguities.
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Affiliation(s)
- Gabriel A Valdivia-Berroeta
- Department of Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., P.O. Box 368, Ridgefield, CT, 06877, USA.
| | - Nina C Gonnella
- Department of Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., P.O. Box 368, Ridgefield, CT, 06877, USA.
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2
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He Y, Yin H, Wang Y, Chu M, Li Y. Visible light-induced oxidative α-hydroxylation of β-dicarbonyl compounds catalyzed by ethylenediamine-copper(ii). RSC Adv 2023; 13:7843-7847. [PMID: 36909753 PMCID: PMC9996412 DOI: 10.1039/d2ra07411g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 03/01/2023] [Indexed: 03/12/2023] Open
Abstract
We have developed an efficient oxidative α-hydroxylation of β-keto esters with firstly using the structurally simple ethylenediamine-copper(ii) as a catalyst for β-keto esters activation and using visible light as the driving force for generating more active singlet oxygen (1O2) from triplet state oxygen (3O2) in the air, providing a series of α-hydroxy β-keto esters in excellent yields (up to 99%) under extremely low photosensitizer loading (0.01 mol%) and catalyst loading (1 mol%) within a short time. Moreover, the gram-scale synthesis showed the practical utility of this protocol.
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Affiliation(s)
- Yujie He
- College of Biological, Chemical Sciences and Engineering, Jiaxing University Jiaxing 314001 China
| | - Hao Yin
- Department of Green Chemistry and Technology, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Yifeng Wang
- Department of Green Chemistry and Technology, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Mingming Chu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University Jiaxing 314001 China
| | - Yiming Li
- College of Biological, Chemical Sciences and Engineering, Jiaxing University Jiaxing 314001 China
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3
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Schirmer TE, König B. Ion-Pairing Catalysis in Stereoselective, Light-Induced Transformations. J Am Chem Soc 2022; 144:19207-19218. [PMID: 36240496 DOI: 10.1021/jacs.2c04759] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
With the rapid development of photoredox catalysis, numerous concepts for asymmetric induction were successfully and broadly adapted from polar two-electron transformations to radical chemistry. While this applies to organocatalysis or transition metal chemistry, asymmetric ion-pairing catalysis remains a niche application within light-driven reactions today. This perspective gives an overview of recent examples, strategies, and their application in stereoselective transformations at the interface of ion-pairing and photo(redox) catalysis.
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Affiliation(s)
- Tobias E Schirmer
- Institute of Organic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
| | - Burkhard König
- Institute of Organic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
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4
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Xu C, Li X, Bai L. Direct Aerobic α-Hydroxylation of Arylacetates for the Synthesis of Mandelates. J Org Chem 2022; 87:4298-4304. [PMID: 35245055 DOI: 10.1021/acs.joc.1c03149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aerobic α-hydroxylation of α-methylene esters has proven challenging due to overoxidation and hydrolysis of the materials. In this article, KOtBu-promoted TBAB-catalyzed α-hydroxylation of α-methylene aryl esters using O2 as the oxygen source has been developed. Both low reaction temperature and catalyst TBAB are keys to success. This reaction provides an environmentally friendly and low-cost approach to mandelates, which are valuable building blocks and widely present in pharmaceuticals.
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Affiliation(s)
- Changming Xu
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Xiangfan Li
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Lei Bai
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
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5
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Visible light-promoted enantioselective aerobic oxidation of pyrazolones by phase transfer catalysis. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.11.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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6
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Li W, Zheng Y, Qu E, Bai J, Deng Q. β
‐Keto Amides: A Jack‐of‐All‐Trades Building Block in Organic Chemistry. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wanfang Li
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Yan Zheng
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Erdong Qu
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Jin Bai
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Qinyue Deng
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai 200093 P. R. China
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7
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Yin H, Wang CJ, Zhao YG, He ZY, Chu MM, Wang YF, Xu DQ. Asymmetric bis(oxazoline)-Ni(II) catalyzed α-hydroxylation of cyclic β-keto esters under visible light. Org Biomol Chem 2021; 19:6588-6592. [PMID: 34023869 DOI: 10.1039/d1ob00546d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Using visible light as a driving force and molecular oxygen as a green oxidant, we developed bis(oxazoline)-Ni(acac)2 catalyzed asymmetric α-hydroxylation of β-keto esters under low photosensitizer loading, and the protocol enabled an efficient transformation to provide the desired chiral α-hydroxy-β-keto esters in high yields (up to 99%) and enantioselectivities (up to 99% ee) at room temperature.
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Affiliation(s)
- Hao Yin
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Chao-Jie Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Yu-Gen Zhao
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Zi-Yang He
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Ming-Ming Chu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, People's Republic of China.
| | - Yi-Feng Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Dan-Qian Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
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8
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Najóczki F, Szabó M, Lihi N, Udvardy A, Fábián I. Synthesis and Characterization of 1,10-Phenanthroline-mono- N-oxides. Molecules 2021; 26:molecules26123632. [PMID: 34198594 PMCID: PMC8231831 DOI: 10.3390/molecules26123632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/08/2021] [Accepted: 06/10/2021] [Indexed: 11/16/2022] Open
Abstract
N-oxides of N-heteroaromatic compounds find widespread applications in various fields of chemistry. Although the strictly planar aromatic structure of 1,10-phenanthroline (phen) is expected to induce unique features of the corresponding N-oxides, so far the potential of these compounds has not been explored. In fact, appropriate procedure has not been reported for synthesizing these derivatives of phen. Now, we provide a straightforward method for the synthesis of a series of mono-N-oxides of 1,10-phenanthrolines. The parent compounds were oxidized by a green oxidant, peroxomonosulfate ion in acidic aqueous solution. The products were obtained in high quality and at good to excellent yields. A systematic study reveals a clear-cut correlation between the basicity of the compounds and the electronic effects of the substituents on the aromatic ring. The UV spectra of these compounds were predicted by DFT calculations at the TD-DFT/TPSSh/def2-TZVP level of theory.
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Affiliation(s)
- Ferenc Najóczki
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (F.N.); (M.S.); (N.L.)
- Doctoral School of Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Mária Szabó
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (F.N.); (M.S.); (N.L.)
| | - Norbert Lihi
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (F.N.); (M.S.); (N.L.)
- MTA-DE Homogeneous Catalysis and Reaction Mechanisms Research Group, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Antal Udvardy
- Department of Physical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary;
| | - István Fábián
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (F.N.); (M.S.); (N.L.)
- MTA-DE Homogeneous Catalysis and Reaction Mechanisms Research Group, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
- Correspondence: ; Tel.: +36-52-512-900 (ext. 22378); Fax: +36-52-518-660
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9
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Wang Y, Wang S, Qiu P, Fang L, Wang K, Zhang Y, Zhang C, Zhao T. Asymmetric α-electrophilic difluoromethylation of β-keto esters by phase transfer catalysis. Org Biomol Chem 2021; 19:4788-4795. [PMID: 33982742 DOI: 10.1039/d1ob00511a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An efficient and enantioselective α-electrophilic difluoromethylation of β-keto esters has been achieved by phase-transfer catalysis. This procedure is applicable to different kinds of β-keto esters with a series of cinchona-derived C-2' aryl-substituted phase-transfer catalysts. The reaction gives the corresponding products in good enantioselectivities (up to 83% ee) and yields (up to 92%) with high C/O regioselectivities (up to 98 : 2). Moreover, the C/O selectivity of β-keto esters could be easily reversed and controlled. This asymmetric difluoromethylation provided a novel and efficient way for introducing chiral C-CF2H groups.
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Affiliation(s)
- Yakun Wang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China.
| | - Shuaifei Wang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China.
| | - Peiyong Qiu
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China.
| | - Lizhen Fang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China.
| | - Ke Wang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China.
| | - Yawei Zhang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China.
| | - Conghui Zhang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China.
| | - Ting Zhao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China.
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10
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Ravindra S, Irfana Jesin CP, Shabashini A, Nandi GC. Recent Advances in the Preparations and Synthetic Applications of Oxaziridines and Diaziridines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001372] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Sundaresan Ravindra
- Department of Chemistry National Institute of Technology Tiruchirappalli 620015, Tamilnadu India
| | - C. P. Irfana Jesin
- Department of Chemistry National Institute of Technology Tiruchirappalli 620015, Tamilnadu India
| | - Arivalagan Shabashini
- Department of Chemistry National Institute of Technology Tiruchirappalli 620015, Tamilnadu India
| | - Ganesh Chandra Nandi
- Department of Chemistry National Institute of Technology Tiruchirappalli 620015, Tamilnadu India
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11
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Inukai T, Kano T, Maruoka K. Asymmetric α-Hydroxylation of α-Aryl-δ-lactams with Molecular Oxygen under Phase-Transfer Conditions. Org Lett 2021; 23:792-796. [PMID: 33476160 DOI: 10.1021/acs.orglett.0c04022] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An asymmetric synthesis of α-aryl-α-hydroxy-δ-lactams via phase-transfer-catalyzed hydroxylation with molecular oxygen is described. High yields and high enantioselectivities were achieved using 2,2-diarylvinyl group as an achiral auxiliary. This strategy allows facile access to α-aryl-α-hydroxy-δ-lactam derivatives containing a chiral quaternary center.
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Affiliation(s)
- Tomoaki Inukai
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Taichi Kano
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Keiji Maruoka
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo, Kyoto 606-8501, Japan.,School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
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12
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Aerobic asymmetric oxygenation catalysis: a well forgotten… future? MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Prentice C, Morrisson J, Smith AD, Zysman-Colman E. Recent developments in enantioselective photocatalysis. Beilstein J Org Chem 2020; 16:2363-2441. [PMID: 33082877 PMCID: PMC7537410 DOI: 10.3762/bjoc.16.197] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 09/09/2020] [Indexed: 01/02/2023] Open
Abstract
Enantioselective photocatalysis has rapidly grown into a powerful tool for synthetic chemists. This review describes the various strategies for creating enantioenriched products through merging enantioselective catalysis and photocatalysis, with a focus on the most recent developments and a particular interest in the proposed mechanisms for each. With the aim of understanding the scope of each strategy, to help guide and inspire further innovation in this field.
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Affiliation(s)
- Callum Prentice
- Organic Semiconductor Centre, EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, Fife, Scotland, KY16 9ST, United Kingdom
| | - James Morrisson
- Pharmaceutical Sciences, IMED Biotech Unit, AstraZeneca, Macclesfield SK102NA, United Kingdom
| | - Andrew D Smith
- Organic Semiconductor Centre, EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, Fife, Scotland, KY16 9ST, United Kingdom
| | - Eli Zysman-Colman
- Organic Semiconductor Centre, EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, Fife, Scotland, KY16 9ST, United Kingdom
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14
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Saha D. Catalytic Enantioselective Radical Transformations Enabled by Visible Light. Chem Asian J 2020; 15:2129-2152. [PMID: 32463981 DOI: 10.1002/asia.202000525] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/27/2020] [Indexed: 12/11/2022]
Abstract
Visible light has been recognized as an economical and environmentally benign source of energy that enables chemoselective molecular activation of chemical reactions and hence reveal a new horizon for the design and discovery of novel chemical transformations. On the other hand, asymmetric catalysis represents an economic method to satisfy the increasing need for enantioenriched compounds in the chemical and pharmaceutical industries. Therefore, combining visible light photocatalysis with asymmetric catalysis creates a wider range of opportunities for the development of mechanistically unique reaction schemes. However, there arise two main problems like undesirable photochemical background reactions and difficulties in controlling the stereochemistry with highly reactive photochemical intermediates which can pose a serious challenge to the development of asymmetric visible light photocatalysis. In recent years, several methods have been developed to overcome these challenges. This review summarizes the recent advances in visible light-induced enantioselective reactions. We divide our discussion into four categories: Asymmetric photoredox organocatalysis, asymmetric transition metal photoredox catalysis, asymmetric photoredox Lewis acid catalysis and asymmetric photoinduced energy transfer catalysis. Special emphasis has been given to different catalytic activation modes that enable the construction of challenging carbon-carbon and carbon-heteroatom bond in an enantioselective fashion. A brief analysis of substrate scope and limitation as well as reaction mechanism of these reactions has been included.
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Affiliation(s)
- Debajyoti Saha
- Department of Chemistry, Krishnagar Govt. College, Krishnagar, Nadia, 741101, India
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15
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Chen J, Gu H, Zhu X, Nam W, Wang B. Zirconium‐Salan Catalyzed Enantioselective
α
‐Hydroxylation of
β
‐Keto Esters. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000290] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jie Chen
- School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 People's Republic of China
| | - Haiyang Gu
- School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 People's Republic of China
| | - Xueying Zhu
- School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 People's Republic of China
| | - Wonwoo Nam
- Department of Chemistry and Nano ScienceEwha Womans University Seoul 03760 Korea
| | - Bin Wang
- School of Chemistry and Chemical EngineeringUniversity of Jinan Jinan 250022 People's Republic of China
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16
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Krištofíková D, Modrocká V, Mečiarová M, Šebesta R. Green Asymmetric Organocatalysis. CHEMSUSCHEM 2020; 13:2828-2858. [PMID: 32141177 DOI: 10.1002/cssc.202000137] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/05/2020] [Indexed: 06/10/2023]
Abstract
Asymmetric organocatalysis is becoming one of the main tools for the synthesis of chiral compounds that are needed as medicines, crop protection agents, and other bioactive molecules. It can be effectively combined with various green chemistry methodologies. Intensification techniques, such as ball milling, flow, high pressure, or light, bring not only higher yields, faster reactions, and easier product isolation, but also new reactivities. More sustainable reaction media, such as ionic liquids, deep eutectic solvents, green solvent alternatives, and water, also considerably enhance the sustainability profile of many organocatalytic reactions.
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Affiliation(s)
- Dominika Krištofíková
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Viktória Modrocká
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Mária Mečiarová
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
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17
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Meninno S, Villano R, Lattanzi A. Recent developments in stereoselective organocatalytic oxyfunctionalizations. PHYSICAL SCIENCES REVIEWS 2020. [DOI: 10.1515/psr-2018-0095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Abstract
In this chapter, asymmetric at carbon oxidations using organocatalytic systems reported from 2012 up to 2018 have been illustrated. Asymmetric epoxidations and oxidation of heteroatom-containing molecules were not included. The processes selected encopass alpha-hydroxylation of carbonyl compounds, dihydroxylation and dioxygenation of alkenes, Baeyer-Villiger and oxidative desymmetrization reactions.
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Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli” , Università di Salerno , via Giovanni Paolo II 132 , Fisciano 84084 , Italy
| | - Rosaria Villano
- Istituto di Chimica Biomolecolare , Consiglio Nazionale delle Ricerche , via Campi Flegrei 34 , Pozzuoli 80078 , Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli” , Università di Salerno , via Giovanni Paolo II 132 , Fisciano 84084 , Italy
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18
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González Adelantado FV. Phase-transfer catalysis and the ion pair concept. PHYSICAL SCIENCES REVIEWS 2020. [DOI: 10.1515/psr-2018-0094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThis review outlines the recent advances in the field of asymmetric phase-transfer catalysis and the ion-pair concept including alkylation of amino acids and peptides, oxyindoles and other substrates, conjugate additions, fluorinations, photo-induced phase-transfer catalysis, Nitro-Mannich reactions, heterocyclizations and cycloadditions for the preparation of heterocycles, derivatization of isoxazoles, umpolung conjugate addition of imines and other three asymmetric reactions.
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19
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Kalaitzakis D, Sofiadis M, Tsopanakis V, Montagnon T, Vassilikogiannakis G. Merging singlet-oxygen induced furan oxidations with organocatalysis: synthesis of enantiopure cyclopentanones and hydrindanes. Org Biomol Chem 2020; 18:2817-2822. [DOI: 10.1039/d0ob00468e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A general, flexible and highly effective method for the regio-, diastereo- & enantioselective one-pot synthesis of important carbocycles, namely, enantiopure cyclopentanones and their hydrindane congeners is presented.
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20
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Fischer J, Mele L, Serier-Brault H, Nun P, Coeffard V. Controlling Photooxygenation with a Bifunctional Quinine-BODIPY Catalyst: towards Asymmetric Hydroxylation of β-Dicarbonyl Compounds. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900984] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jérôme Fischer
- Université de Nantes; CEISAM UMR CNRS 6230; 44000 Nantes France
| | - Lucas Mele
- Université de Nantes; CEISAM UMR CNRS 6230; 44000 Nantes France
| | - Hélène Serier-Brault
- Institut des Matériaux Jean Rouxel; Université de Nantes; CNRS; 2 rue de la Houssinière, BP 32229 44322 Nantes France
| | - Pierrick Nun
- Université de Nantes; CEISAM UMR CNRS 6230; 44000 Nantes France
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21
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Wang Y, Wang S, Gao Q, Li L, Zhi H, Zhang T, Zhang J. Transition-metal, organic solvent and base free α-hydroxylation of β-keto esters and β-keto amides with peroxides in water. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.06.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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22
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Zhang D, Lian M, Liu J, Tang S, Liu G, Ma C, Meng Q, Peng H, Zhu D. Preparation of O-Protected Cyanohydrins by Aerobic Oxidation of α-Substituted Malononitriles in the Presence of Diarylphosphine Oxides. Org Lett 2019; 21:2597-2601. [DOI: 10.1021/acs.orglett.9b00569] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dapeng Zhang
- Department of Pharmaceutics, Harbin Medical University (Daqing), Daqing 163319, China
| | - Mingming Lian
- Department of Pharmaceutics, Harbin Medical University (Daqing), Daqing 163319, China
| | - Jia Liu
- Department of Pharmaceutics, Harbin Medical University (Daqing), Daqing 163319, China
| | - Shukun Tang
- Department of Pharmaceutics, Harbin Medical University (Daqing), Daqing 163319, China
| | - Guangzhi Liu
- Irradiation Technology Application Factory of Changshu, Changshu 215557, China
| | - Cunfei Ma
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology Department, Dalian University of Technology, Dalian 116024, China
| | - Qingwei Meng
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology Department, Dalian University of Technology, Dalian 116024, China
| | - Haisheng Peng
- Department of Pharmaceutics, Harbin Medical University (Daqing), Daqing 163319, China
| | - Daling Zhu
- Department of Pharmaceutics, Harbin Medical University (Daqing), Daqing 163319, China
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23
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Boratyński PJ, Zielińska-Błajet M, Skarżewski J. Cinchona Alkaloids-Derivatives and Applications. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2019; 82:29-145. [PMID: 30850032 DOI: 10.1016/bs.alkal.2018.11.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Major Cinchona alkaloids quinine, quinidine, cinchonine, and cinchonidine are available chiral natural compounds (chiral pool). Unlike many other natural products, these alkaloids are available in multiple diastereomeric forms which are separated on an industrial scale. The introduction discusses in short conformational equilibria, traditional separation scheme, biosynthesis, and de novo chemical syntheses. The second section concerns useful chemical applications of the alkaloids as chiral recognition agents and effective chiral catalysts. Besides the Sharpless ethers and quaternary ammonium salts (chiral PTC), the most successful bifunctional organocatalysts are based on 9-amino derivatives: thioureas and squaramides. The third section reports the main transformations of Cinchona alkaloids. This covers reactions of the 9-hydroxyl group with the retention or inversion of configuration. Specific Cinchona rearrangements enlarging [2.2.2]bicycle of quinuclidine to [3.2.2] products are connected to the 9-OH substitution. The syntheses of numerous esterification and etherification products are described, including many examples of bi-Cinchona alkaloid ethers. Further derivatives comprise 9-N-substituted compounds. The amino group is introduced via an azido function with the inversion of configuration at the stereogenic center C9. The 9-epi-amino-alkaloids provide imines, amides, imides, thioureas, and squaramides. The syntheses of 9-carbon-, 9-sulfur-, and 9-selenium-substituted derivatives are discussed. Oxidation of the hydroxyl group of any alkaloid gives ketones, which can be selectively reduced, reacted with Grignard reagents, or subjected to the Corey-Chaykovsky reaction. The alkaloids were also partially degraded by splitting C4'-C9 or N1-C8 bonds. In order to immobilize Cinchona alkaloids the transformations of the 3-vinyl group were often exploited. Finally, miscellaneous functionalizations of quinuclidine, quinoline, and examples of various metal complexes of the alkaloids are considered.
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Affiliation(s)
| | | | - Jacek Skarżewski
- Department of Organic Chemistry, Wrocław University of Technology, Wrocław, Poland.
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24
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Wang Y, Li Y, Lian M, Zhang J, Liu Z, Tang X, Yin H, Meng Q. Asymmetric α-alkylation of cyclic β-keto esters and β-keto amides by phase-transfer catalysis. Org Biomol Chem 2019; 17:573-584. [DOI: 10.1039/c8ob02669f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A facile and efficient asymmetric α-alkylation of β-keto esters and β-keto amides has been achieved by phase-transfer catalysis.
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Affiliation(s)
- Yakun Wang
- School of Pharmacy
- Xinxiang Medical University
- Xinxiang
- PR China
| | - Yueyun Li
- Xinxiang Central Hospital
- Xinxiang Medical University
- Xinxiang
- PR China
| | - Mingming Lian
- Department of Pharmaceutics
- Daqing Campus
- Harbin Medical University
- Daqing
- P. R. China
| | - Jixia Zhang
- School of Pharmacy
- Xinxiang Medical University
- Xinxiang
- PR China
| | - Zhaomin Liu
- School of Pharmacy
- Xinxiang Medical University
- Xinxiang
- PR China
| | - Xiaofei Tang
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian
- P. R. China
| | - Hang Yin
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian
- P. R. China
| | - Qingwei Meng
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian
- P. R. China
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25
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Chen Y, Lu LQ, Yu DG, Zhu CJ, Xiao WJ. Visible light-driven organic photochemical synthesis in China. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9399-2] [Citation(s) in RCA: 240] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Zhou Q, Zou Y, Lu L, Xiao W. Mit sichtbarem Licht induzierte, organische photochemische Reaktionen über Energietransferrouten. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803102] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Quan‐Quan Zhou
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University (CCNU) 152 Luoyu Road Wuhan Hubei 430079 China
| | - You‐Quan Zou
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University (CCNU) 152 Luoyu Road Wuhan Hubei 430079 China
| | - Liang‐Qiu Lu
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University (CCNU) 152 Luoyu Road Wuhan Hubei 430079 China
| | - Wen‐Jing Xiao
- CCNU-uOttawa Joint Research CentreKey Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal University (CCNU) 152 Luoyu Road Wuhan Hubei 430079 China
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27
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Zhou QQ, Zou YQ, Lu LQ, Xiao WJ. Visible-Light-Induced Organic Photochemical Reactions through Energy-Transfer Pathways. Angew Chem Int Ed Engl 2018; 58:1586-1604. [PMID: 29774651 DOI: 10.1002/anie.201803102] [Citation(s) in RCA: 577] [Impact Index Per Article: 96.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/17/2018] [Indexed: 12/25/2022]
Abstract
Visible-light photocatalysis is a rapidly developing and powerful strategy to initiate organic transformations, as it closely adheres to the tenants of green and sustainable chemistry. Generally, most visible-light-induced photochemical reactions occur through single-electron transfer (SET) pathways. Recently, visible-light-induced energy-transfer (EnT) reactions have received considerable attentions from the synthetic community as this strategy provides a distinct reaction pathway, and remarkable achievements have been made in this field. In this Review, we highlight the most recent advances in visible-light-induced EnT reactions.
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Affiliation(s)
- Quan-Quan Zhou
- CCNU-uOttawa Joint Research Centre, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University (CCNU), 152 Luoyu Road, Wuhan, Hubei, 430079, China
| | - You-Quan Zou
- CCNU-uOttawa Joint Research Centre, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University (CCNU), 152 Luoyu Road, Wuhan, Hubei, 430079, China
| | - Liang-Qiu Lu
- CCNU-uOttawa Joint Research Centre, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University (CCNU), 152 Luoyu Road, Wuhan, Hubei, 430079, China
| | - Wen-Jing Xiao
- CCNU-uOttawa Joint Research Centre, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University (CCNU), 152 Luoyu Road, Wuhan, Hubei, 430079, China
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28
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He ZT, Hartwig JF. Enantioselective α-functionalizations of ketones via allylic substitution of silyl enol ethers. Nat Chem 2018; 11:177-183. [PMID: 30455430 PMCID: PMC6347495 DOI: 10.1038/s41557-018-0165-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 10/01/2018] [Indexed: 11/25/2022]
Abstract
The enantioselective construction of carbon–heteroatom and carbon–carbon bonds alpha to ketones forms substructures that are ubiquitous in natural products, pharmaceuticals and agrochemicals. Traditional methods to form such bonds have relied on combining ketone enolates with electrophiles. Reactions with heteroatom-based electrophiles require special reagents in which the heteroatom, which is typically nucleophilic, has been rendered electrophilic by changes to the oxidation state. The resulting products usually require post-synthetic transformations to unveil the functional group in the final desired products. Moreover, different catalytic systems are typically required for the reaction of different electrophiles. Here, we report a strategy for the formal enantioselective α-functionalization of ketones to form products containing a diverse array of substituents at the alpha position with a single catalyst. This strategy involves an unusual reversal of the role of the nucleophile and electrophile to form C–N, C–O, C–S, and C–C bonds from a series of masked ketone electrophiles and a wide range of conventional heteroatom and carbon nucleophiles catalyzed by a metallacyclic iridium catalyst.
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Affiliation(s)
- Zhi-Tao He
- Department of Chemistry, University of California, Berkeley, CA, USA
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, CA, USA.
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29
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Wu Y, Zhou G, Meng Q, Tang X, Liu G, Yin H, Zhao J, Yang F, Yu Z, Luo Y. Visible Light-Induced Aerobic Epoxidation of α,β-Unsaturated Ketones Mediated by Amidines. J Org Chem 2018; 83:13051-13062. [PMID: 30285439 DOI: 10.1021/acs.joc.8b01710] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
An aerobic photoepoxidation of α,β-unsaturated ketones driven by visible light in the presence of tetramethylguanidine (3b), tetraphenylporphine (H2TPP), and molecular oxygen under mild conditions was revealed. The corresponding α,β-epoxy ketones were obtained in yields of up to 94% in 96 h. The reaction time was shortened to 4.6 h by flow synthesis. The mechanism related to singlet oxygen was supported by experiments and density functional theory (DFT) calculations.
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30
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Ottenbacher RV, Talsi EP, Bryliakov KP. Catalytic asymmetric oxidations using molecular oxygen. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4825] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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High-efficiency α-benzoyloxylation and hydroxylation of β-keto amides by phase transfer catalysis. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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32
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Chiral iminophosphoranes organocatalyzed asymmetric hydroxylation of 3-substituted oxindoles with oxaziridines. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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33
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Wang Y, Gao Q, Liu Z, Bai S, Tang X, Yin H, Meng Q. Enantioselective α-Benzoyloxylation of β-Keto Esters by N-Oxide Phase-Transfer Catalysts. J Org Chem 2018; 83:2263-2273. [DOI: 10.1021/acs.joc.7b03150] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yakun Wang
- School
of Pharmacy, Xinxiang Medical University, Xinxiang, 453003 Henan, People’s Republic of China
- School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian, 116024 Liaoning, People’s Republic of China
| | - Qinghe Gao
- School
of Pharmacy, Xinxiang Medical University, Xinxiang, 453003 Henan, People’s Republic of China
| | - Zhaomin Liu
- School
of Pharmacy, Xinxiang Medical University, Xinxiang, 453003 Henan, People’s Republic of China
| | - Suping Bai
- School
of Pharmacy, Xinxiang Medical University, Xinxiang, 453003 Henan, People’s Republic of China
| | - Xiaofei Tang
- School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian, 116024 Liaoning, People’s Republic of China
| | - Hang Yin
- School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian, 116024 Liaoning, People’s Republic of China
| | - Qingwei Meng
- School
of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian, 116024 Liaoning, People’s Republic of China
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34
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Geri JB, Wade Wolfe MM, Szymczak NK. Borazine-CF 3- Adducts for Rapid, Room Temperature, and Broad Scope Trifluoromethylation. Angew Chem Int Ed Engl 2018; 57:1381-1385. [PMID: 29205733 DOI: 10.1002/anie.201711316] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Indexed: 12/20/2022]
Abstract
A fluoroform-derived borazine CF3- transfer reagent is used to effect rapid nucleophilic reactions in the absence of additives, within minutes at 25 °C. Inorganic electrophiles spanning seven groups of the periodic table can be trifluoromethylated in high yield, including transition metals used for catalytic trifluoromethylation. Organic electrophiles included (hetero)arenes, enabling C-H and C-X trifluoromethylation reactions. Mechanistic analysis supports a dissociative mechanism for CF3- transfer, and cation modification afforded a reagent with enhanced stability.
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Affiliation(s)
- Jacob B Geri
- Department of Chemistry, University of Michigan, 930 N. University, Ann Arbor, MI, 48109, USA
| | - Michael M Wade Wolfe
- Department of Chemistry, University of Michigan, 930 N. University, Ann Arbor, MI, 48109, USA
| | - Nathaniel K Szymczak
- Department of Chemistry, University of Michigan, 930 N. University, Ann Arbor, MI, 48109, USA
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35
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Geri JB, Wade Wolfe MM, Szymczak NK. Borazine-CF3
−
Adducts for Rapid, Room Temperature, and Broad Scope Trifluoromethylation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711316] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Jacob B. Geri
- Department of Chemistry; University of Michigan; 930 N. University Ann Arbor MI 48109 USA
| | - Michael M. Wade Wolfe
- Department of Chemistry; University of Michigan; 930 N. University Ann Arbor MI 48109 USA
| | - Nathaniel K. Szymczak
- Department of Chemistry; University of Michigan; 930 N. University Ann Arbor MI 48109 USA
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36
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Yang C, Zhang W, Li YH, Xue XS, Li X, Cheng JP. Origin of Stereoselectivity of the Photoinduced Asymmetric Phase-Transfer-Catalyzed Perfluoroalkylation of β-Ketoesters. J Org Chem 2017; 82:9321-9327. [DOI: 10.1021/acs.joc.7b01130] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chen Yang
- State
Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, P.R. China
- Department
of Chemistry and Biology, College of Science, National University of Defense Technology, Changsha 410073, China
| | - Wei Zhang
- State
Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, P.R. China
| | - Yi-He Li
- Department
of Chemistry and Biology, College of Science, National University of Defense Technology, Changsha 410073, China
| | - Xiao-Song Xue
- State
Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, P.R. China
| | - Xin Li
- State
Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, P.R. China
| | - Jin-Pei Cheng
- State
Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, P.R. China
- Department
of Chemistry and Biology, College of Science, National University of Defense Technology, Changsha 410073, China
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37
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Schörgenhumer J, Tiffner M, Waser M. Chiral phase-transfer catalysis in the asymmetric α-heterofunctionalization of prochiral nucleophiles. Beilstein J Org Chem 2017; 13:1753-1769. [PMID: 28904619 PMCID: PMC5588627 DOI: 10.3762/bjoc.13.170] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 08/10/2017] [Indexed: 01/10/2023] Open
Abstract
Chiral phase-transfer catalysis is one of the major catalytic principles in asymmetric catalysis. A broad variety of different catalysts and their use for challenging applications have been reported over the last decades. Besides asymmetric C–C bond forming reactions the use of chiral phase-transfer catalysts for enantioselective α-heterofunctionalization reactions of prochiral nucleophiles became one of the most important field of application of this catalytic principle. Based on several highly spectacular recent reports, we thus wish to discuss some of the most important achievements in this field within the context of this review.
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Affiliation(s)
- Johannes Schörgenhumer
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Maximilian Tiffner
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Mario Waser
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
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38
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Sheng X, Zhang J, Yang H, Jiang G. Tunable Aerobic Oxidative Hydroxylation/Dehydrogenative Homocoupling of Pyrazol-5-ones under Transition-Metal-Free Conditions. Org Lett 2017; 19:2618-2621. [DOI: 10.1021/acs.orglett.7b00951] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xuguang Sheng
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research
Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinlong Zhang
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research
Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Huameng Yang
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research
Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Gaoxi Jiang
- State
Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research
Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
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39
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Yang F, Zhao J, Tang X, Zhou G, Song W, Meng Q. Enantioselective α-Hydroxylation by Modified Salen-Zirconium(IV)-Catalyzed Oxidation of β-Keto Esters. Org Lett 2017; 19:448-451. [PMID: 28078895 DOI: 10.1021/acs.orglett.6b03554] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The highly enantioselective α-hydroxylation of β-keto esters using cumene hydroperoxide (CHP) as the oxidant was realized by a chiral (1S,2S)-cyclohexanediamine backbone salen-zirconium(IV) complex as the catalyst. A variety of corresponding chiral α-hydroxy β-keto esters were obtained in excellent yields (up to 99%) and enantioselectivities (up to 98% ee). The zirconium-catalyzed enantioselective α-hydroxylation of β-keto esters was scalable, and the zirconium catalyst was recyclable. The reaction can be performed in gram scale, and corresponding chiral products were acquired in 95% yield and 99% ee.
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Affiliation(s)
- Fan Yang
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology , Dalian 116024, P. R. China
| | - Jingnan Zhao
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology , Dalian 116024, P. R. China
| | - Xiaofei Tang
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology , Dalian 116024, P. R. China
| | - Guangli Zhou
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology , Dalian 116024, P. R. China
| | - Wangze Song
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology , Dalian 116024, P. R. China
| | - Qingwei Meng
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology , Dalian 116024, P. R. China
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40
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Najóczki F, Bellér G, Szabó M, Fábián I. Substituent effect on the N-oxidation of 1,10-phenanthroline derivatives by peroxomonosulfate ion. NEW J CHEM 2017. [DOI: 10.1039/c7nj01860f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Both the acidity of a series of substituted 1,10-phenanthrolines and their reactivity towardsN-oxidation are predominantly governed by electronic effects.
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Affiliation(s)
- Ferenc Najóczki
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Egyetem tér 1
- Hungary
| | - Gábor Bellér
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Egyetem tér 1
- Hungary
| | - Mária Szabó
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Egyetem tér 1
- Hungary
| | - István Fábián
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Egyetem tér 1
- Hungary
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41
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Novacek J, Izzo JA, Vetticatt MJ, Waser M. Bifunctional Ammonium Salt Catalyzed Asymmetric α-Hydroxylation of β-Ketoesters by Simultaneous Resolution of Oxaziridines. Chemistry 2016; 22:17339-17344. [DOI: 10.1002/chem.201604153] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Indexed: 01/26/2023]
Affiliation(s)
- Johanna Novacek
- Institute of Organic Chemistry; Johannes Kepler University Linz; Altenbergerstr. 69 4040 Linz Austria
| | - Joseph A. Izzo
- Department of Chemistry; Binghamton University; Binghamton New York 13902 USA
| | - Mathew J. Vetticatt
- Department of Chemistry; Binghamton University; Binghamton New York 13902 USA
| | - Mario Waser
- Institute of Organic Chemistry; Johannes Kepler University Linz; Altenbergerstr. 69 4040 Linz Austria
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