1
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Tian JR, Qiao YH, Zhuang QB, Fan R, Li Z, Zhang XM, Zhang FM, Tu YQ. Organo-cation catalyzed enantioselective α-hydroxylation of pyridinone-fused lactones: asymmetric synthesis of SN-38 and irinotecan. Chem Commun (Camb) 2024; 60:9954-9957. [PMID: 39177032 DOI: 10.1039/d4cc03580a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
A catalytic asymmetric α-hydroxylation of pyridinone-fused lactones, containing the core structure of camptothecin, is described. Development of a novel spiropyrrolidine amide (SPA) derived triazolium bromide organo-cation catalyst is crucial for a highly enantioselective oxidation, which also accommodates a wide array of lactones with various substituents. The resulting tricyclic tertiary alcohol with an oxa-quaternary carbon center can be further applied in the synthesis of SN-38 and irinotecan, two anti-cancer drugs derived from camptothecin.
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Affiliation(s)
- Jin-Rui Tian
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Yu-Hao Qiao
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Qing-Bo Zhuang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
- School of Pharmaceutical Sciences, National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Rong Fan
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Zhen Li
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
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2
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He H, Tummalapalli KSS, Zhu L, Chen M, Krishnamurthy S, Antilla JC. Asymmetric Rubottom-Type Oxidation Catalyzed by Chiral Calcium Phosphates. Chemistry 2023; 29:e202203720. [PMID: 36541518 DOI: 10.1002/chem.202203720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/16/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
A highly efficient catalytic asymmetric Rubottom-type oxidation is described. Using meta-chloroperbenzoic acid (m-CPBA) as the oxidant and chiral calcium phosphate as the catalyst, the facile transformation enables direct hydroxylation of N-Boc oxindoles and β-ketoesters in high yields (up to 99 %) and in a highly enantioenriched fashion (up to >99 % ee). The application of the established method was demonstrated by the synthesis of a pharmaceutically important 3-hydroxyoxindole with excellent enantiocontrol.
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Affiliation(s)
- Hualing He
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, 310018, P. R. China
| | | | - Linfei Zhu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, 310018, P. R. China
| | - Minglei Chen
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, 310018, P. R. China
| | - Suvratha Krishnamurthy
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, 310018, P. R. China
| | - Jon C Antilla
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang Province, 310018, P. R. China
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3
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Lei ZL, Huang DK, Liu Q, Chen HY, Gao YN, Liu JT, Liu ZJ. Decarboxylative aldol reaction of α,α-difluoro-β-keto acids and isatins: A facile synthesis of 3-difluoroalkyl-3-hydroxyoxindole derivatives. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2021.109930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Han X, Shan LX, Zhu JX, Zhang CS, Zhang XM, Zhang FM, Wang H, Tu YQ, Yang M, Zhang WS. Copper-Nitrene-Catalyzed Desymmetric Oxaziridination/1,2-Alkyl Rearrangement of 1,3-Diketones toward Bicyclic Lactams. Angew Chem Int Ed Engl 2021; 60:22688-22692. [PMID: 34414645 DOI: 10.1002/anie.202107909] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Indexed: 11/08/2022]
Abstract
Although copper-nitrene has been extensively studied as a versatile active species in various transformations, asymmetric reactions involving copper-nitrene have been limited to the aziridination of olefins. Herein, we report the novel copper-nitrene-catalyzed desymmetric oxaziridination reaction of cyclic diketones with alkyl azides and the subsequent rearrangement of the resulting highly active intermediate, which produces a synthetically challenging chiral bicyclic lactam containing a quaternary carbon center. This procedure not only enriches the copper-nitrene-catalyzed asymmetric reactions, but also provides an alternative strategy to address the inherent challenges of catalytic asymmetric Schmidt reactions. This unique reaction could inspire the investigation of novel copper-nitrene-catalyzed asymmetric transformations and their reaction mechanisms.
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Affiliation(s)
- Xue Han
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Li-Xin Shan
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Jin-Xin Zhu
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Chang-Sheng Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Hong Wang
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China.,School of Chemistry and Chemical Engineering and Shanghai Key Laboratory of Chiral Medicine Chemistry, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Ming Yang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Wen-Shuo Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
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5
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Han X, Shan L, Zhu J, Zhang C, Zhang X, Zhang F, Wang H, Tu Y, Yang M, Zhang W. Copper‐Nitrene‐Catalyzed Desymmetric Oxaziridination/1,2‐Alkyl Rearrangement of 1,3‐Diketones toward Bicyclic Lactams. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xue Han
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Li‐Xin Shan
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Jin‐Xin Zhu
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 China
| | - Chang‐Sheng Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Xiao‐Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Fu‐Min Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Hong Wang
- College of Pharmaceutical Science and Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 China
| | - Yong‐Qiang Tu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
- School of Chemistry and Chemical Engineering and Shanghai Key Laboratory of Chiral Medicine Chemistry Shanghai Jiao Tong University Shanghai 200240 China
| | - Ming Yang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
| | - Wen‐Shuo Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
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6
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Zhang Y, Ye D, Shen L, Liang K, Xia C. Tandem Photoredox-Chiral Phosphoric Acid Catalyzed Radical-Radical Cross-Coupling for Enantioselective Synthesis of 3-Hydroxyoxindoles. Org Lett 2021; 23:7112-7117. [PMID: 34459613 DOI: 10.1021/acs.orglett.1c02510] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A photochemical protocol that couples diarylamines and α-ketoesters to afford the chiral 3-hydroxyoxindoles through tandem photoredox and chiral phosphoric acid catalysis is developed. The reaction involves an enantioselective photochemical radical-radical cross-coupling process. The chiral phosphoric acid is discovered to play crucial roles by decreasing the reductive potentials of α-ketoesters and stereocontrolling the downstream asymmetric radical-radical cross-coupling via the formation of pentacoordinate complex.
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Affiliation(s)
- Yang Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Dan Ye
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Lei Shen
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Kangjiang Liang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Chengfeng Xia
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
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7
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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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8
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Di Sanza R, Nguyen TLN, Iqbal N, Argent SP, Lewis W, Lam HW. Enantioselective nickel-catalyzed arylative and alkenylative intramolecular 1,2-allylations of tethered allene-ketones. Chem Sci 2020; 11:2401-2406. [PMID: 34084403 PMCID: PMC8157472 DOI: 10.1039/c9sc05246a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 01/20/2020] [Indexed: 01/02/2023] Open
Abstract
The enantioselective nickel-catalyzed reaction of tethered allene-ketones with (hetero)arylboronic acids or potassium vinyltrifluoroborate is described. Carbonickelation of the allene gives allylnickel species, which undergo cyclization by 1,2-allylation to produce chiral tertiary-alcohol-containing aza- and carbocycles in high diastereo- and enantioselectivities.
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Affiliation(s)
- Riccardo Di Sanza
- The Glaxo Smith Kline Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham Jubilee Campus, Triumph Road Nottingham NG7 2TU UK
- School of Chemistry, University of Nottingham University Park Nottingham NG7 2RD UK
| | - Thi Le Nhon Nguyen
- The Glaxo Smith Kline Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham Jubilee Campus, Triumph Road Nottingham NG7 2TU UK
- School of Chemistry, University of Nottingham University Park Nottingham NG7 2RD UK
| | - Naeem Iqbal
- The Glaxo Smith Kline Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham Jubilee Campus, Triumph Road Nottingham NG7 2TU UK
- School of Chemistry, University of Nottingham University Park Nottingham NG7 2RD UK
| | - Stephen P Argent
- School of Chemistry, University of Nottingham University Park Nottingham NG7 2RD UK
| | - William Lewis
- School of Chemistry, University of Nottingham University Park Nottingham NG7 2RD UK
| | - Hon Wai Lam
- The Glaxo Smith Kline Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham Jubilee Campus, Triumph Road Nottingham NG7 2TU UK
- School of Chemistry, University of Nottingham University Park Nottingham NG7 2RD UK
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9
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Ren Q, Yang W, Lan Y, Qin X, He Y, Yuan L. Recent Advances in the Catalytic Asymmetric Reactions of Oxaziridines. Molecules 2018; 23:E2656. [PMID: 30332802 PMCID: PMC6222879 DOI: 10.3390/molecules23102656] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 10/07/2018] [Accepted: 10/08/2018] [Indexed: 12/19/2022] Open
Abstract
Oxaziridines have emerged as powerful and elegant oxygen- and nitrogen-transfer agents for a broad array of nucleophiles, due to the remarkably high and tunable reactivities. However, the asymmetric catalysis involving oxaziridines is still in its infancy. Herein, this review aims to examine recent advances in the catalytic asymmetric transformations of oxaziridines, including oxidation, amination, cycloaddition and deracemization.
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Affiliation(s)
- Qiao Ren
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
| | - Wen Yang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
| | - Yunfei Lan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
| | - Xurong Qin
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
| | - Youzhou He
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China.
| | - Lujiang Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
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10
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Brandão P, Burke AJ. Recent advances in the asymmetric catalytic synthesis of chiral 3-hydroxy and 3-aminooxindoles and derivatives: Medicinally relevant compounds. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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11
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Davis FA. Recent applications of N-sulfonyloxaziridines (Davis oxaziridines) in organic synthesis. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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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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13
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Zhang HJ, Schuppe AW, Pan ST, Chen JX, Wang BR, Newhouse TR, Yin L. Copper-Catalyzed Vinylogous Aerobic Oxidation of Unsaturated Compounds with Air. J Am Chem Soc 2018; 140:5300-5310. [DOI: 10.1021/jacs.8b01886] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Hai-Jun Zhang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Alexander W. Schuppe
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Shi-Tao Pan
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Jin-Xiang Chen
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Bo-Ran Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Timothy R. Newhouse
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Liang Yin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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14
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Naganawa Y, Abe H, Nishiyama H. Design of bifunctional chiral phenanthroline ligand with Lewis basic site for palladium-catalyzed asymmetric allylic substitution. Chem Commun (Camb) 2018; 54:2674-2677. [DOI: 10.1039/c8cc00754c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Conceptually new bifunctional chiral ligands with Lewis basic site were developed for Pd-catalyzed asymmetric allylic substitution.
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Affiliation(s)
- Yuki Naganawa
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
- Chikusa
- Japan
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology
- Tsukuba 305-8565
| | - Hiroki Abe
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
- Chikusa
- Japan
| | - Hisao Nishiyama
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
- Chikusa
- Japan
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15
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Shanker M, Venkanna A, Prasad PV, Swamy MK, Venkateswar Rao P. Molecular Iodine-Mediated Ring Opening Reaction of Spiro-Epoxy Oxindoles with Electron Rich Arenes. ChemistrySelect 2017. [DOI: 10.1002/slct.201701561] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Medi Shanker
- Department of chemistry; Osmania university; Tarnaka, Hyderabad India- 500007
| | - Avudoddi Venkanna
- Department of chemistry; Osmania university; Tarnaka, Hyderabad India- 500007
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16
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Jadhav AP, Manchanda A, Jaiswal MK, Singh RP. Asymmetric Stereoablative Aryloxylation of 3-Bromooxindoles with Bifunctional Catalyst. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700693] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Amol P. Jadhav
- Department of Chemistry; Indian Institute of Technology, Delhi; Hauz Khas New Delhi - 110 016 India
| | - Aarti Manchanda
- Department of Chemistry; Indian Institute of Technology, Delhi; Hauz Khas New Delhi - 110 016 India
| | - Manish K. Jaiswal
- Department of Chemistry; Indian Institute of Technology, Delhi; Hauz Khas New Delhi - 110 016 India
| | - Ravi P. Singh
- Department of Chemistry; Indian Institute of Technology, Delhi; Hauz Khas New Delhi - 110 016 India
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17
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Chaudhari MB, Sutar Y, Malpathak S, Hazra A, Gnanaprakasam B. Transition-Metal-Free C–H Hydroxylation of Carbonyl Compounds. Org Lett 2017. [DOI: 10.1021/acs.orglett.7b01616] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Moreshwar B. Chaudhari
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Yogesh Sutar
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Shreyas Malpathak
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Anirban Hazra
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Boopathy Gnanaprakasam
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
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18
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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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19
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Naganawa Y, Nishiyama H. Renovation of Optically Active Phenanthrolines as Powerful Chiral Ligands for Versatile Asymmetric Metal Catalysis. CHEM REC 2016; 16:2573-2584. [PMID: 27500684 DOI: 10.1002/tcr.201600078] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Indexed: 01/26/2023]
Abstract
In the field of asymmetric synthesis, the development of new chiral ligands has been regarded as an attractive challenge for decades. Novel chiral ligands can often have a great impact on synthetic protocols. In this context, we are currently interested in the application of 1,10-phenanthroline (phen) as an entirely new class of chiral ligand. To handle this issue, we designed a chiral phen ligand that provides the N,N,O-tridentate coordination of the phen moiety and an additional phenolic hydroxyl group. As phen possesses greater coordination ability with various ions, our chiral phen ligand would be valuable as one of the "privileged" chiral ligands applied to a broad range of metal catalysts and new reactions. This account summarizes the results of the application of the chiral phen ligand to various kinds of metal catalysis.
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Affiliation(s)
- Yuki Naganawa
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya, 464-8603, Japan
| | - Hisao Nishiyama
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya, 464-8603, Japan
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20
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Naganawa Y, Aoyama T, Kato K, Nishiyama H. Cu(II)-catalyzed Enantioselective α-Hydroxylation and α-Chlorination of β-Ketoesters withN,N,O-Tridentate Chiral Phenanthroline Ligand. ChemistrySelect 2016. [DOI: 10.1002/slct.201600449] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yuki Naganawa
- Department of Applied Chemistry; Graduate School of Engineering; Nagoya University; Chikusa Nagoya 464-8603 Japan
| | - Tomotaka Aoyama
- Department of Applied Chemistry; Graduate School of Engineering; Nagoya University; Chikusa Nagoya 464-8603 Japan
| | - Keisuke Kato
- Department of Applied Chemistry; Graduate School of Engineering; Nagoya University; Chikusa Nagoya 464-8603 Japan
| | - Hisao Nishiyama
- Department of Applied Chemistry; Graduate School of Engineering; Nagoya University; Chikusa Nagoya 464-8603 Japan
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