1
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He S, Feng B, Tang Y, Chen R, Guo Y, Koenigs RM. Photochemical α-amination of carbonyl groups with iodinanes. Chem Commun (Camb) 2024. [PMID: 39189815 DOI: 10.1039/d4cc03564j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
We report on a photochemical reaction of silyl enol ethers with iminoiodinanes. This aza Rubottom reaction provides a direct access towards α-amino carbonyl compounds under catalyst free reaction conditions with light as the sole source of energy. Control experiments suggest the participation of triplet nitrene intermediates.
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Affiliation(s)
- Suyuan He
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, 52074 Aachen, Germany.
| | - Boya Feng
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, 52074 Aachen, Germany.
| | - Yiben Tang
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, 52074 Aachen, Germany.
| | - Ruiping Chen
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, 52074 Aachen, Germany.
| | - Yujing Guo
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, 52074 Aachen, Germany.
| | - Rene M Koenigs
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, 52074 Aachen, Germany.
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2
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Shen M, Li M, Yu J. Pd-catalyzed three-component [2 + 2 + 1] cycloamination toward carbazoles. Org Biomol Chem 2024; 22:3268-3272. [PMID: 38568713 DOI: 10.1039/d4ob00356j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Conventional approaches using hydroxylamine derivatives as single nitrogen sources for the preparation of N-heterocyclic molecules rely on two chemical processes involving sequential nucleophilic and electrophilic C-N bond formations. Herein, we report a novel Suzuki reaction/C-H activation/amination sequence for building a myriad of carbazoles in a single transformation using bifunctional secondary hydroxylamines. It is noteworthy that the synthetic utility of this methodology is highlighted by the total synthesis of clausine V and glycoborine by incorporating the title [2 + 2 + 1] cycloamination as the key step. Control experiments were performed to gain a better understanding of the reaction mechanism.
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Affiliation(s)
- Mingzhu Shen
- College of Chemistry & Materials Science, Northwest University, 1 Xue Fu Avenue, Chang'an Zone, Xi'an 710127, China.
| | - Min Li
- College of Chemistry & Materials Science, Northwest University, 1 Xue Fu Avenue, Chang'an Zone, Xi'an 710127, China.
| | - Jingxun Yu
- College of Chemistry & Materials Science, Northwest University, 1 Xue Fu Avenue, Chang'an Zone, Xi'an 710127, China.
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3
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Gunasekera S, Pryyma A, Jung J, Greenwood R, Patrick BO, Perrin DM. Diphenylphosphinylhydroxylamine (DPPH) Affords Late-Stage S-imination to access free-NH Sulfilimines and Sulfoximines. Angew Chem Int Ed Engl 2024; 63:e202314906. [PMID: 38289976 DOI: 10.1002/anie.202314906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/01/2024]
Abstract
Sulfilimines, as potential aza-isosteres of sulfoxides, are valued as building blocks, auxiliaries, ligands, bioconjugation handles, and as precursors to versatile S(VI) scaffolds including sulfoximines and sulfondiimines. Here, we report a thioether imination methodology that exploits O-(diphenylphosphinyl)hydroxyl amine (DPPH). Under mild, metal-free, and biomolecule-compatible conditions, DPPH enables late-stage S-imination on peptides, natural products, and a clinically trialled drug, and shows both excellent chemoselectivity and broad functional group tolerance. This methodological report is extended to an efficient and high-yielding one-pot reaction for accessing free-NH sulfoximines with diverse substrates including ones of potential clinical importance. In the presence of a rhodium catalyst, sulfoxides are S-iminated in higher yields to afford free-NH sulfoximines. S-imination was validated on an oxidatively delicate amatoxin to give sulfilimine and sulfoximine congeners. Interestingly, these new sulfilimine and sulfoximine-amatoxins show cytotoxicity. This method is further extended to create sulfilimine and sulfoximine-Fulvestrant and buthionine analogues.
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Affiliation(s)
- Shanal Gunasekera
- Chemistry Department, University of British Columbia, 2036 Main Mall, V6T 1Z1, Vancouver, B.C., Canada
| | - Alla Pryyma
- Chemistry Department, University of British Columbia, 2036 Main Mall, V6T 1Z1, Vancouver, B.C., Canada
| | - Jimin Jung
- Chemistry Department, University of British Columbia, 2036 Main Mall, V6T 1Z1, Vancouver, B.C., Canada
| | - Rebekah Greenwood
- Chemistry Department, University of British Columbia, 2036 Main Mall, V6T 1Z1, Vancouver, B.C., Canada
| | - Brian O Patrick
- Chemistry Department, University of British Columbia, 2036 Main Mall, V6T 1Z1, Vancouver, B.C., Canada
| | - David M Perrin
- Chemistry Department, University of British Columbia, 2036 Main Mall, V6T 1Z1, Vancouver, B.C., Canada
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4
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Li G, Zhao X, Zhang J, Liu X, Sun B, Xu F. Nickel-catalyzed oxidative thiolation of α-amino carbonyl compounds with thiols. Org Biomol Chem 2024; 22:2003-2006. [PMID: 38376800 DOI: 10.1039/d3ob01825c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
An efficient oxidative thiolation of α-amino carbonyl compounds with thiols by the catalysis of an Earth-abundant nickel salt is disclosed for the first time. A variety of alkyl thiols and (hetero)aryl thiols underwent the reaction well with α-amino ketones and an α-amino ester to produce the desired α,α-aminothiocarbonyl compounds in good to excellent yields under ligand- and base-free conditions.
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Affiliation(s)
- Gaoqiang Li
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710062, P. R. China.
| | - Xiaoqian Zhao
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710062, P. R. China.
| | - Jiarui Zhang
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710062, P. R. China.
| | - Xue Liu
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710062, P. R. China.
| | - Bangguo Sun
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710062, P. R. China.
| | - Feng Xu
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710062, P. R. China.
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5
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Mondal BD, Gorai S, Nath R, Paul A, Guin J. Enantioselective Amination of 3-Substituted-2-benzofuranones via Non-covalent N-Heterocyclic Carbene Catalysis. Chemistry 2024; 30:e202303115. [PMID: 37997460 DOI: 10.1002/chem.202303115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 11/25/2023]
Abstract
Herein, an efficient method for asymmetric α-amination of 2-benzofuranones with N-heterocyclic carbene (NHC) catalysis is reported. The process is based on non-covalent interaction of NHC with substrate, facilitating the formation of a chiral ion-pair that encompasses enolate and azolium salt. The activated enolate adds to an electrophilic amine source with sufficient facial control to furnish an enantioenriched product having an amine substituted quaternary stereocenter. The process displays a broad substrate scope. A preparative scale synthesis has been achieved. Preliminary mechanistic investigations based on experimental and DFT studies suggest a reaction pathway that involves non-covalent substrate/NHC interactions and essentially implicate the role of π-π interaction in diastereomeric transition states for stereo-chemical discrimination.
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Affiliation(s)
- Bhaskar Deb Mondal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2 A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Sadhan Gorai
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2 A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Rounak Nath
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2 A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Ankan Paul
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2 A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Joyram Guin
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2 A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, India
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6
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Makino K, Kumagai Y, Yoshino T, Kojima M, Matsunaga S. Catalytic Enantioselective Amination of Enol Silyl Ethers Using a Chiral Paddle-Wheel Diruthenium Complex. Org Lett 2023; 25:3234-3238. [PMID: 37140361 DOI: 10.1021/acs.orglett.3c00940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
A chiral paddle-wheel dinuclear ruthenium catalyst was applied to a catalytic asymmetric nitrene-transfer reaction with enol silyl ethers. The ruthenium catalyst was applicable to aliphatic enol silyl ethers as well as aryl-containing enol silyl ethers. The substrate scope of the ruthenium catalyst was superior to that of analogous chiral paddle-wheel rhodium catalysts. α-Amino ketones derived from aliphatic substrates were obtained in up to 97% ee with the ruthenium catalyst, while analogous rhodium catalysts resulted in only moderate enantioselectivity.
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Affiliation(s)
- Kotoko Makino
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Yuhei Kumagai
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Tatsuhiko Yoshino
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
- Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Sapporo 060-0812, Japan
| | - Masahiro Kojima
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Shigeki Matsunaga
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
- Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Sapporo 060-0812, Japan
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7
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Okumatsu D, Kawanaka K, Kainuma S, Kiyokawa K, Minakata S. α-Amination of Carbonyl Compounds by Using Hypervalent Iodine-Based Aminating Reagents Containing a Transferable (Diarylmethylene)amino Group. Chemistry 2023; 29:e202203722. [PMID: 36604401 DOI: 10.1002/chem.202203722] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/05/2023] [Accepted: 01/05/2023] [Indexed: 01/07/2023]
Abstract
Hypervalent iodine-based aminating reagents containing a transferable (diarylmethylene)amino group can be used for the α-amination of simple carbonyl compounds such as esters, amides, and ketones in the presence of a lithium base. The (diarylmethylene)amino groups of the products can be readily modified, thus providing access to primary amines and diarylmethylamines. The developed method features transition-metal-free conditions and a simple one-pot procedure without the need to prepare enolate equivalents separately, thus offering a general and practical approach to the synthesis of a wide variety of α-amino carbonyl compounds. Experimental mechanistic investigations indicate that this amination proceeds through a unique radical coupling of an α-carbonyl radical with an iminyl radical; they are generated through a single-electron transfer between a lithium enolate and the hypervalent iodine reagent.
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Affiliation(s)
- Daichi Okumatsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Kazuki Kawanaka
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Shunpei Kainuma
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
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8
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Ravindar L, Hasbullah SA, Hassan NI, Qin HL. Cross‐Coupling of C‐H and N‐H Bonds: a Hydrogen Evolution Strategy for the Construction of C‐N Bonds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lekkala Ravindar
- Universiti Kebangsaan Malaysia Fakulti Teknologi dan Sains Maklumat Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Siti Aishah Hasbullah
- Universiti Kebangsaan Malaysia Fakulti Sains dan Teknologi Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Nurul Izzaty Hassan
- Universiti Kebangsaan Malaysia Fakulti Sains dan Teknologi Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Hua-Li Qin
- Wuhan University of Technology School of Chemistry 430070 Hubei CHINA
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9
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Bai J, Xu N, Wang H, Luan X. Palladium(II)-Catalyzed [2+2+1] Annulation of Alkynes and Hydroxylamines: A Rodox-Neutral Approach to Fully Substituted Pyrroles. Org Lett 2022; 24:5099-5104. [PMID: 35819925 DOI: 10.1021/acs.orglett.2c01925] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A palladium-catalyzed [2+2+1] annulation of alkynes and hydroxylamines has been developed for the rapid construction of fully substituted pyrroles. This transformation involves sequential nucleophilic-addition of hydroxylamine to alkyne, alkyne migratory insertion, and synergistic demetallization cyclization, which provides a redox-neutral annulation approach to pyrrole derivatives. Moreover, the strategy enabled alteration of the photophysical properties of pyrrole products by varying the aryl substituents, thus leading to the development of N-functionalized tetraarylpyrroles as new fluorophores.
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Affiliation(s)
- Jiaxing Bai
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Nengni Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Hui Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Xinjun Luan
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
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10
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Yadav R, Darakshan, Parvin T. Catalyst‐free one‐pot synthesis of quinoline tethered
α
‐amino ketones by multicomponent reactions. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Rahul Yadav
- Department of Chemistry National Institute of Technology Patna, Ashok Rajpath Patna
| | - Darakshan
- Department of Chemistry National Institute of Technology Patna, Ashok Rajpath Patna
| | - Tasneem Parvin
- Department of Chemistry National Institute of Technology Patna, Ashok Rajpath Patna
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11
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Kattamuri PV, Zhao J, Das TK, Siitonen JH, Morgan N, Ess DH, Kürti L. Aza-Quasi-Favorskii Reaction: Construction of Highly Substituted Aziridines through a Concerted Multibond Rearrangement Process. J Am Chem Soc 2022; 144:10943-10949. [PMID: 35674783 PMCID: PMC9994606 DOI: 10.1021/jacs.2c03805] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A new molecular rearrangement, the aza-Quasi-Favorskii rearrangement, has been developed for the construction of highly substituted aziridines. Electron-deficient O-sulfonyl oximes react readily with α,α-disubstituted acetophenone-derived enolates to furnish highly substituted aziridines via this unprecedented domino process. In-depth computational studies reveal an asynchronous yet concerted nitrenoid-type rearrangement pathway.
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Affiliation(s)
| | - Jidong Zhao
- Department of Chemistry, Rice University, Houston, Texas 77030, United States
| | - Tamal Kanti Das
- Department of Chemistry, Rice University, Houston, Texas 77030, United States
| | - Juha H Siitonen
- Department of Chemistry, Rice University, Houston, Texas 77030, United States.,Department of Chemistry and Materials Science, Aalto University, Kemistintie 1, FI-02150 Espoo, Finland
| | - Nathan Morgan
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Daniel H Ess
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - László Kürti
- Department of Chemistry, Rice University, Houston, Texas 77030, United States
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12
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Hwang Y, Baek SB, Kim D, Chang S. Chain Walking as a Strategy for Iridium-Catalyzed Migratory Amidation of Alkenyl Alcohols to Access α-Amino Ketones. J Am Chem Soc 2022; 144:4277-4285. [PMID: 35200026 DOI: 10.1021/jacs.2c00948] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Catalytic carbon-nitrogen bond formation in hydrocarbons is an appealing synthetic tool to access valuable nitrogen-containing compounds. Although a number of synthetic approaches have been developed to construct a bifunctional α-amino carbonyl scaffold in this realm, installation of an amino functionality at the remote and unfunctionalized aliphatic sites remains underdeveloped. Here we present a tandem iridium catalysis that enables the redox-relay amidation of alkenyl alcohols via chain walking and metal-nitrenoid transfer, which eventually offers a new route to various α-amino ketones with excellent regioselectivity. The virtue of this transformation is that an unrefined isomeric mixture of alkenyl alcohols can be utilized as the readily available starting materials to lead to the regioconvergent amidation. Mechanistic investigations revealed that the reaction proceeds via a tandem process involving two key components of redox-relay chain walking and intermolecular nitrenoid transfer with the assistance of hydrogen bonding, thus representing the competence of Ir catalysis for the olefin migratory C-N coupling with high efficiency and exquisite selectivity.
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Affiliation(s)
- Yeongyu Hwang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Seung Beom Baek
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Dongwook Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Sukbok Chang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
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13
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Wang X, Zhu B, Liu Y, Wang Q. Combined Photoredox and Carbene Catalysis for the Synthesis of α-Amino Ketones from Carboxylic Acids. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05815] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xiaochen Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin300071, People’s Republic of China
| | - Binbing Zhu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin300071, People’s Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin300071, People’s Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin300071, People’s Republic of China
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14
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Wang D, Zhang W, Lu X, Zhou H, Zhong F. Cinchona Alkaloid Derived Iodide Catalyzed Enantioselective Oxidative α-Amination of Carbonyl Compounds toward the Construction of Spiroindolyloxindole. Org Lett 2022; 24:842-847. [PMID: 35025513 DOI: 10.1021/acs.orglett.1c04118] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Novel cinchona alkaloid derived iodide catalysts were developed for the enantioselective oxidative α-amination of 2-oxindoles, providing various functionalized spiropyrrolidine oxindoles in high yields and with good enantioselectivities. This iodide/ROOH catalytic system features a one-step synthesis of a catalyst with multiple functionalities, ease of operation, and good scalability, thereby enriching the repertoire of iodide catalysis for enantioselective oxidative coupling reactions.
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Affiliation(s)
- Dangui Wang
- School of Pharmacy, Weifang Medical University, Weifang 261053, People's Republic of China.,Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, People's Republic of China
| | - Wentao Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, People's Republic of China
| | - Xunbo Lu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, People's Republic of China
| | - Hongwei Zhou
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, People's Republic of China
| | - Fangrui Zhong
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, People's Republic of China
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15
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Toupy T, Kune C, Van Hecke K, Quinton L, Monbaliu JCM. A multifaceted approach towards understanding the peculiar behavior of (α)-hydroxyiminophosphonates. Org Chem Front 2022. [DOI: 10.1039/d1qo01564h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A unique multifaceted approach involving the interplay of NMR, XRD, LC, DFT and MS/IM-MS techniques toward the understanding of the peculiar isomer-selective reduction of (α)-hydroxyiminophosphonates into (α)-hydroxyaminophosphonate derivatives.
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Affiliation(s)
- Thomas Toupy
- Center for Integrated Technology and Organic Synthesis, MolSys Research Unit, University of Liège, B-4000 Liège (Sart Tilman), Belgium
| | - Christopher Kune
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, B-4000 Liège (Sart Tilman), Belgium
| | - Kristof Van Hecke
- XStruct, Department of Chemistry, Ghent University, Krijgslaan 281-S3, B-9000 Ghent, Belgium
| | - Loïc Quinton
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, B-4000 Liège (Sart Tilman), Belgium
| | - Jean-Christophe M. Monbaliu
- Center for Integrated Technology and Organic Synthesis, MolSys Research Unit, University of Liège, B-4000 Liège (Sart Tilman), Belgium
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16
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Affiliation(s)
- Lauren G. O'Neil
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
- Department of Chemistry University of Liverpool Crown Street Liverpool L69 7ZD UK
| | - John F. Bower
- Department of Chemistry University of Liverpool Crown Street Liverpool L69 7ZD UK
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17
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Zhao H, Hu B, Xu L, Walsh PJ. Palladium-catalyzed benzylic C(sp 3)-H carbonylative arylation of azaarylmethyl amines with aryl bromides. Chem Sci 2021; 12:10862-10870. [PMID: 34476065 PMCID: PMC8372623 DOI: 10.1039/d1sc02078a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 07/06/2021] [Indexed: 01/08/2023] Open
Abstract
A highly selective palladium-catalyzed carbonylative arylation of weakly acidic benzylic C(sp3)-H bonds of azaarylmethylamines with aryl bromides under 1 atm of CO gas has been achieved. This work represents the first examples of use of such weakly acidic pronucleophiles in this class of transformations. In the presence of a NIXANTPHOS-based palladium catalyst, this one-pot cascade process allows a range of azaarylmethylamines containing pyridyl, quinolinyl and pyrimidyl moieties and acyclic and cyclic amines to undergo efficient reactions with aryl bromides and CO to provide α-amino aryl-azaarylmethyl ketones in moderate to high yields with a broad substrate scope and good tolerance of functional groups. This reaction proceeds via in situ reversible deprotonation of the benzylic C-H bonds to give the active carbanions, thereby avoiding prefunctionalized organometallic reagents and generation of additional waste. Importantly, the operational simplicity, scalability and diversity of the products highlight the potential applicability of this protocol.
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Affiliation(s)
- Haoqiang Zhao
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Bowen Hu
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Lijin Xu
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
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18
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Takeda M, Maejima S, Yamaguchi E, Itoh A. Iodine-mediated direct α-amination of dimethyl methylmalonate using non-protected amines. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Widyan K. An Improved Synthesis of Sulfonyl Azides in Ionic Liquids. ORG PREP PROCED INT 2021. [DOI: 10.1080/00304948.2021.1933333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Khalid Widyan
- Department of Chemistry, Tafila Technical University, Tafila, Jordan
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20
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Nagare YK, Shah IA, Yadav J, Pawar AP, Choudhary R, Chauhan P, Kumar I. Electrochemical Oxidative Coupling Between Benzylic C(sp 3)-H and N-H of Secondary Amines: Rapid Synthesis of α-Amino α-Aryl Esters. J Org Chem 2021; 86:9682-9691. [PMID: 34184902 DOI: 10.1021/acs.joc.1c00944] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
An intermolecular electrochemical coupling between the benzylic C(sp3)-H bond and various secondary amines is reported. The electronic behavior of two electronically rich units viz the α-position of α-aryl acetates and amines was engineered electrochemically, thus facilitating their reactivity for the direct access of α-amino esters. A series of acyclic/cyclic secondary amines and α-aryl acetates were tested to furnish the corresponding α-amino esters with high yields (up to 92%) under mild conditions.
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Affiliation(s)
- Yadav Kacharu Nagare
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Imtiyaz Ahmad Shah
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Jyothi Yadav
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Amol Prakash Pawar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
| | - Rahul Choudhary
- Praveen Laboratories Pvt. Ltd., Surat 394304, Gujarat, India
| | - Pankaj Chauhan
- Department of Chemistry, Indian Institute of Technology Jammu, Jammu 181221, India
| | - Indresh Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, Rajasthan, India
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21
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O'Neil LG, Bower JF. Electrophilic Aminating Agents in Total Synthesis. Angew Chem Int Ed Engl 2021; 60:25640-25666. [PMID: 33942955 PMCID: PMC9291613 DOI: 10.1002/anie.202102864] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Indexed: 12/12/2022]
Abstract
Classical amination methods involve the reaction of a nitrogen nucleophile with an electrophilic carbon center; however, in recent years, umpoled strategies have gained traction where the nitrogen source acts as an electrophile. A wide range of electrophilic aminating agents are now available, and these underpin a range of powerful C−N bond‐forming processes. In this Review, we highlight the strategic use of electrophilic aminating agents in total synthesis.
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Affiliation(s)
- Lauren G O'Neil
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.,Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - John F Bower
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
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22
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Allen LAT, Raclea RC, Natho P, Parsons PJ. Recent advances in the synthesis of α-amino ketones. Org Biomol Chem 2021; 19:498-513. [PMID: 33325975 DOI: 10.1039/d0ob02098b] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Due to the importance of the amino ketone motif in synthetic and medicinal chemistry, the number of protocols developed in recent years has considerably increased. This review serves to collate and critically evaluate novel methodologies published since 2011 towards this high value synthon. The chapters are divided by the requisite functionality in the starting material, and an emphasis is placed on discussing functional group compatibility and resultant product substitution patterns. Throughout, applications to medicinal targets are highlighted and mechanistic details are presented, and we further provide a short outlook for future development and emerging potential within this area.
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Affiliation(s)
- Lewis A T Allen
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, UK.
| | - Robert-Cristian Raclea
- Massachusetts Institute of Technology, Department of Chemistry, 77, Massachusetts Avenue, Cambridge, MA 02139-4307, USA
| | - Philipp Natho
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, UK.
| | - Philip J Parsons
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, UK.
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23
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Fu X, Hao Y, Bai HY, Duan A, Zhang SY. Co-Catalyzed Direct Regio- and Enantioselective Intermolecular γ-Amination of N-Acylpyrazoles. Org Lett 2020; 23:25-30. [DOI: 10.1021/acs.orglett.0c03522] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xin Fu
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, China
- College of Environmental Science & Technology, Hunan University, Changsha 410082, China
| | - Yu Hao
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, China
| | - He-Yuan Bai
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Abing Duan
- College of Environmental Science & Technology, Hunan University, Changsha 410082, China
| | - Shu-Yu Zhang
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, China
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24
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Lin X, Fang F, Lin W, Liu Z, Chang X, Li P, Li W. Organocatalytic Enantioselective α‐Amination by Conjugate Addition of 5
H
‐Thiazol‐4‐ones to Arylazocarboxylates: Access to Chiral
N
,
S
‐acetals. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000355] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xiao Lin
- Department of Medicinal ChemistrySchool of PharmacyQingdao University Qingdao Shandong 266021 China
| | - Fang Fang
- Department of ChemistryCollege of ScienceSouthern University of Science and Technology (SUSTech) Shenzhen Guangdong 518055 China
| | - Wei Lin
- Department of Medicinal ChemistrySchool of PharmacyQingdao University Qingdao Shandong 266021 China
| | - Zhantao Liu
- Department of Medicinal ChemistrySchool of PharmacyQingdao University Qingdao Shandong 266021 China
| | - Xiaoyong Chang
- Department of ChemistryCollege of ScienceSouthern University of Science and Technology (SUSTech) Shenzhen Guangdong 518055 China
| | - Pengfei Li
- Department of ChemistryCollege of ScienceSouthern University of Science and Technology (SUSTech) Shenzhen Guangdong 518055 China
- Guangdong Provincial Key Laboratory of CatalysisSouthern University of Science and Technology (SUSTech) Shenzhen Guangdong 518055 China
| | - Wenjun Li
- Department of Medicinal ChemistrySchool of PharmacyQingdao University Qingdao Shandong 266021 China
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25
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Strehl J, Hilt G. Electrochemical, Iodine-Mediated α-CH Amination of Ketones by Umpolung of Silyl Enol Ethers. Org Lett 2020; 22:5968-5972. [DOI: 10.1021/acs.orglett.0c02068] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Julia Strehl
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Strasse 9-11, D-26111 Oldenburg, Germany
| | - Gerhard Hilt
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Strasse 9-11, D-26111 Oldenburg, Germany
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26
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Lee M, Jung H, Kim D, Park JW, Chang S. Modular Tuning of Electrophilic Reactivity of Iridium Nitrenoids for the Intermolecular Selective α-Amidation of β-Keto Esters. J Am Chem Soc 2020; 142:11999-12004. [DOI: 10.1021/jacs.0c04344] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Minhan Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Hoimin Jung
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Dongwook Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Jung-Woo Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
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27
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Raclea RC, Natho P, Allen LAT, White AJP, Parsons PJ. Oxidative Deconstruction of Azetidinols to α-Amino Ketones. J Org Chem 2020; 85:9375-9385. [PMID: 32543189 DOI: 10.1021/acs.joc.0c00986] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A silver-mediated synthesis of α-amino ketones via the oxidative deconstruction of azetidinols has been developed using a readily scalable protocol with isolated yields up to 80%. The azetidinols are easily synthesized in one step and can act as protecting groups for these pharmaceutically relevant synthons. Furthermore, mechanistic insights are presented and these data have revealed that the transformation is likely to proceed through the β-scission of an alkoxy radical, followed by oxidation and C-N cleavage of the resulting α-amido radical.
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Affiliation(s)
- Robert-Cristian Raclea
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, U.K
| | - Philipp Natho
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, U.K
| | - Lewis A T Allen
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, U.K
| | - Andrew J P White
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, U.K
| | - Philip J Parsons
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, W12 0BZ, London, U.K
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28
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Fan L, Hao J, Yu J, Ma X, Liu J, Luan X. Hydroxylamines As Bifunctional Single-Nitrogen Sources for the Rapid Assembly of Diverse Tricyclic Indole Scaffolds. J Am Chem Soc 2020; 142:6698-6707. [PMID: 32182059 DOI: 10.1021/jacs.0c00403] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Conventional approaches on using hydroxylamine derivatives as single nitrogen sources, for the construction of n-membered (n > 3) N-heterocycles, rely upon two chemical operations by involving sequential nucleophilic and electrophilic C-N bond formations. Here, we report a highly efficient cascade of alkyne insertion/C-H activation/amination for the rapid preparation of a myriad of tricyclic indoles, in a single-step transformation, by using bifunctional secondary hydroxylamines. It is noteworthy that judicious selection of applicable amino agents, for enabling the prior oxidative addition of aryl iodide to initial Pd(0) species and subsequent two C-N bonds formation, was the key to the success of this reaction. Control experiments indicated that a five-membered palladacyclic intermediate played a crucial role in promoting the final aminative ring closure.
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Affiliation(s)
- Liangxin Fan
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Jiamao Hao
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Jingxun Yu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Xiaojun Ma
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Jingjing Liu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Xinjun Luan
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
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29
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Kahya D, Eroğlu F. Electrophilic amination of Cu(I) catalyzed phenylmagnesium bromide with N,O-bis(trimethylsilyl)hydroxylamine in THF:N-donor solvent. Control of C–N and C–O chemoselectivity. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.120884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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30
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Kang K, Nishimoto Y, Yasuda M. Regio- and Stereoselective Carboindation of Internal Alkynyl Ethers with Organosilicon or -stannane Nucleophiles. J Org Chem 2019; 84:13345-13363. [DOI: 10.1021/acs.joc.9b01505] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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31
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Levitre G, Audubert C, Dumoulin A, Goual N, Retailleau P, Moreau X, Masson G. Combining Organocatalysis and Photoredox Catalysis: An Asymmetric Synthesis of Chiral
β‐
Amino
α‐
Substituted Tryptamines. ChemCatChem 2019. [DOI: 10.1002/cctc.201901266] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Guillaume Levitre
- Institut de Chimie des Substances Naturelles CNRS UPR 2301 Université Paris-SudUniversité Paris-Saclay 1, Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Clément Audubert
- Institut de Chimie des Substances Naturelles CNRS UPR 2301 Université Paris-SudUniversité Paris-Saclay 1, Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Audrey Dumoulin
- Institut de Chimie des Substances Naturelles CNRS UPR 2301 Université Paris-SudUniversité Paris-Saclay 1, Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Nawel Goual
- Institut de Chimie des Substances Naturelles CNRS UPR 2301 Université Paris-SudUniversité Paris-Saclay 1, Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles CNRS UPR 2301 Université Paris-SudUniversité Paris-Saclay 1, Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
| | - Xavier Moreau
- Institut Lavoisier Versailles UMR CNRS 8180Université de Versailles-St-Quentin-en-Yvelines Université Paris-Saclay 45 Avenue des Etats-Unis 78035 Versailles cedex France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles CNRS UPR 2301 Université Paris-SudUniversité Paris-Saclay 1, Avenue de la Terrasse 91198 Gif-sur-Yvette Cedex France
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32
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Zhang Z, Luo Y, Du H, Xu J, Li P. Synthesis of α-heterosubstituted ketones through sulfur mediated difunctionalization of internal alkynes. Chem Sci 2019; 10:5156-5161. [PMID: 31183068 PMCID: PMC6524669 DOI: 10.1039/c9sc00568d] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/15/2019] [Indexed: 12/16/2022] Open
Abstract
Synthesis of α-heterosubstituted ketones was achieved through sulfur mediated difunctionalization of internal alkynes in one pot. The reaction design involves: phenyl substituted internal alkyne attacking triflic anhydride activated diphenyl sulfoxide to give a sulfonium vinyl triflate intermediate, hydrolysis to give an α-sulfonium ketone, and then substitution with various nucleophiles. This method provides a unified route to access α-amino ketones, α-acyloxy ketones, α-thio ketones, α-halo ketones, α-hydroxy ketones, and related heterocyclic structures, in a rapid fashion.
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Affiliation(s)
- Zhong Zhang
- State Key Laboratory of Chemical Resource Engineering , Department of Organic Chemistry , Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China . ; ;
| | - Yuzheng Luo
- State Key Laboratory of Chemical Resource Engineering , Department of Organic Chemistry , Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China . ; ;
| | - Hongguang Du
- State Key Laboratory of Chemical Resource Engineering , Department of Organic Chemistry , Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China . ; ;
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering , Department of Organic Chemistry , Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China . ; ;
| | - Pingfan Li
- State Key Laboratory of Chemical Resource Engineering , Department of Organic Chemistry , Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China . ; ;
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33
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Crocker MS, Foy H, Tokumaru K, Dudding T, Pink M, Johnston JN. Direct Observation and Analysis of the Halo-Amino-Nitro Alkane Functional Group. Chem 2019; 5:1248-1264. [PMID: 32766460 DOI: 10.1016/j.chempr.2019.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Conventional amide synthesis is a mainstay in discipline-spanning applications, and it is a reaction type that historically developed as a singular paradigm when considering the carbon-nitrogen bond-forming step. Umpolung amide synthesis (UmAS) exploits the unique properties of an α-halo nitroalkane in its reaction with an amine to produce an amide. The "umpolung" moniker reflects its paradigm-breaking C-N bond formation on the basis of evidence that the nucleophilic nitronate carbon and electrophilic nitrogen engage to form a tetrahedral intermediate (TI) that is an unprecedented functional group, a 1,1,1-halo-amino-nitro alkane (HANA). Studies probing HANA transience have failed to capture this (presumably) highly reactive intermediate. We report here the direct observation of a HANA, its conversion thermally to an amide functionality, and quantitative analysis of this process using computational techniques. These findings validate the HANA as a functional group common to UmAS and diverted UmAS, opening the door to its targeted use and creative manipulation.
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Affiliation(s)
- Michael S Crocker
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822, USA
| | - Hayden Foy
- Department of Chemistry, Brock University, St. Catharines, ON, Canada
| | - Kazuyuki Tokumaru
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822, USA
| | - Travis Dudding
- Department of Chemistry, Brock University, St. Catharines, ON, Canada
| | - Maren Pink
- Indiana University Molecular Structure Center, Bloomington, IN 47405, USA
| | - Jeffrey N Johnston
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822, USA.,Lead Contact
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34
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Zhou Z, Cheng QQ, Kürti L. Aza-Rubottom Oxidation: Synthetic Access to Primary α-Aminoketones. J Am Chem Soc 2019; 141:2242-2246. [PMID: 30696241 DOI: 10.1021/jacs.8b13818] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
An aza analogue of the Rubottom oxidation is reported. This facile transformation takes place at ambient temperature and directly converts silyl enol ethers to the corresponding primary α-aminoketones. The use of hexafluoroisopropanol (HFIP) as the solvent is essential for the success of this reaction. Overall this process is well-suited for the aza-functionalization and derivatization of complex organic molecules.
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Affiliation(s)
- Zhe Zhou
- Department of Chemistry , Rice University BioScience Research Collaborative , 6500 Main Street , Houston , Texas 77030 , United States
| | - Qing-Qing Cheng
- Department of Chemistry , Rice University BioScience Research Collaborative , 6500 Main Street , Houston , Texas 77030 , United States
| | - László Kürti
- Department of Chemistry , Rice University BioScience Research Collaborative , 6500 Main Street , Houston , Texas 77030 , United States
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35
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Kremláček V, Hyvl J, Yoshida WY, Růžička A, Rheingold AL, Turek J, Hughes RP, Dostál L, Cain MF. Heterocycles Derived from Generating Monovalent Pnictogens within NCN Pincers and Bidentate NC Chelates: Hypervalency versus Bell-Clappers versus Static Aromatics. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00290] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Vít Kremláček
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice 53210, Czech Republic
| | - Jakub Hyvl
- Department of Chemistry, University of Hawai‘i at Ma̅noa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Wesley Y. Yoshida
- Department of Chemistry, University of Hawai‘i at Ma̅noa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Aleš Růžička
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice 53210, Czech Republic
| | - Arnold L. Rheingold
- Department of Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Jan Turek
- Eenheid Algemene Chemie (ALGC), Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussels, Belgium
| | - Russell P. Hughes
- Department of Chemistry, Dartmouth College, 6128 Burke Laboratory, Hanover, New Hampshire 03755, United States
| | - Libor Dostál
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice 53210, Czech Republic
| | - Matthew F. Cain
- Department of Chemistry, University of Hawai‘i at Ma̅noa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
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36
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Lee A, Oh S, Kim H. Synthesis of α-(4-Oxazolyl)amino Esters via Brønsted Acid Catalyzed Tandem Reaction. Org Lett 2018; 20:3319-3322. [PMID: 29763328 DOI: 10.1021/acs.orglett.8b01212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A one-step, Brønsted acid catalyzed tandem reaction for the synthesis of α-(4-oxazolyl)amino esters was developed. 4-Nitrobenzenesulfonic acid was found to be an efficient catalyst for the coupling of ethyl 2-oxobut-3-ynoates with amides to provide various α-(4-oxazolyl)amino esters. The experimental and X-ray crystallographic data suggest that a series of bond-forming reactions including imine formation, intermolecular Michael addition, and intramolecular Michael addition are involved to generate both the oxazole and amino acid functionalities.
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Affiliation(s)
- Ansoo Lee
- Department of Chemistry , KAIST , Daejeon 34141 , Korea
| | - Seohee Oh
- Department of Chemistry , KAIST , Daejeon 34141 , Korea
| | - Hyunwoo Kim
- Department of Chemistry , KAIST , Daejeon 34141 , Korea
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37
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Li Y, Zhang R, Bi X, Fu J. Multifunctionalization of Unactivated Cyclic Ketones via Synergistic Catalysis of Copper and Diarylamine: Access to Cyclic α-Enaminone. Org Lett 2018; 20:1207-1211. [PMID: 29420046 DOI: 10.1021/acs.orglett.8b00125] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A multifunctionalization of unactivated cyclic ketones via synergistic catalysis of copper and diarylamine for the direct synthesis of cyclic α-enaminone is reported for the first time. This reaction goes through oxidative α-amination, followed by a desaturation, and features mild reaction conditions, a broad substrate scope, and great functional group tolerance.
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Affiliation(s)
- Yang Li
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University , Changchun 130024, China
| | - Ran Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University , Changchun 130024, China
| | - Xihe Bi
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University , Changchun 130024, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, China
| | - Junkai Fu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University , Changchun 130024, China.,Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School , Shenzhen 518055, China
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38
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Li YJ, Zhang L, Yan N, Meng XH, Zhao YL. Acid/Base-Co-catalyzed Direct Oxidative α-Amination of Cyclic Ketones: Using Molecular Oxygen as the Oxidant. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701103] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yi-Jin Li
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Faculty of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
| | - Lu Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Faculty of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
| | - Na Yan
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Faculty of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
| | - Xiang-He Meng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Faculty of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
| | - Yu-Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Faculty of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
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39
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Asano T, Moritani M, Nakajima M, Kotani S. Chiral lithium binaphtholate for enantioselective amination of acyclic α-alkyl-β-keto esters: Application to the total synthesis of l -carbidopa. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.08.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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40
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Zorin AV, Zainashev AT, Zorin VV. Reaction of N-chloroamines with carbanions derived from ethyl acetoacetate and diethyl malonate. RUSS J GEN CHEM+ 2017. [DOI: 10.1134/s1070363217080072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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41
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D'Souza OJ, Mascarenhas RJ, Satpati AK, Mane V, Mekhalif Z. Application of a Nanosensor Based on MWCNT-Sodium Dodecyl Sulphate Modified Electrode for the Analysis of a Novel Drug, Alpha-Hydrazinonitroalkene in Human Blood Serum. ELECTROANAL 2017. [DOI: 10.1002/elan.201700114] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ozma J D'Souza
- Research and Development Centre; Bharathiar University; Coimbatore - 641 014, Tamil Nadu India
| | - Ronald J Mascarenhas
- Research and Development Centre; Bharathiar University; Coimbatore - 641 014, Tamil Nadu India
- Electrochemistry Research Group, Department of Chemistry; St. Joseph's College; Lalbagh Road Bangalore - 560 027 Karnataka India
| | - Ashis K Satpati
- Analytical Chemistry Division, Bhabha Atomic Research Centre; Anushakthi Nagar, Trombay; Mumbai - 400 094, Maharashtra India
| | - Vaijinath Mane
- Department of Chemistry; Indian Institute of Technology; Bombay, Mumbai - 400 076 India
| | - Zineb Mekhalif
- Laboratoire de Chimie et d'Electrochimie des Surface; University of Namur; 61 Rue de Bruxelles B-5000 Namur Belgium
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42
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Kim D, Ha MW, Hong S, Park C, Kim B, Yang J, Park HG. Enantioselective Synthesis of Chiral α-Azido and α-Aryloxy Quaternary Stereogenic Centers via the Phase-Transfer-Catalyzed α-Alkylation of α-Bromomalonates, Followed by SN2 Substitution. J Org Chem 2017; 82:4936-4943. [DOI: 10.1021/acs.joc.7b00324] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Doyoung Kim
- Research
Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Min Woo Ha
- Research
Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Suckchang Hong
- Korea Research Institute of Chemical Technology, 16 Gajung-ro Yoosung-gu, Daejeon 34114, Korea
| | - Cheonhyoung Park
- Research
Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Byungsoo Kim
- Research
Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Jewon Yang
- Research
Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Hyeung-geun Park
- Research
Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, Seoul 151-742, Korea
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43
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Wei Y, Zhang HX, Zeng JL, Nie J, Ma JA. Organocatalytic Asymmetric Decarboxylative Amination of β-Keto Acids: Access to Optically Active α-Amino Ketones and 1,2-Amino Alcohols. Org Lett 2017; 19:2162-2165. [PMID: 28406311 DOI: 10.1021/acs.orglett.7b00797] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An organocatalytic asymmetric decarboxylative amination reaction of β-keto acids is described. Under mild reaction conditions, a series of chiral α-amino ketones were obtained in good to high yields (up to 99%) and enantioselectivities (up to 95% ee). A chiral 1,2-amino alcohol was synthesized from the corresponding decarboxylative amination product in several steps without loss of enantioselectivity.
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Affiliation(s)
- Yi Wei
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, P. R. China
| | - Heng-Xia Zhang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, P. R. China
| | - Jun-Liang Zeng
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, P. R. China
| | - Jing Nie
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, P. R. China
| | - Jun-An Ma
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, P. R. China
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44
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Abstract
This review updates the major progress in the field of enantioselective transformations promoted by chiral magnesium catalysts, covering the literature since 2007, illustrating the power of these green catalysts to promote many types of reactions.
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45
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Abstract
This review collects the major progress in the field of enantioselective transformations promoted by chiral silver catalysts, covering the literature since 2008, well illustrating the power of these especially mild Lewis acid catalysts to provide novel asymmetric reactions.
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Affiliation(s)
- Hélène Pellissier
- Aix Marseille Univ., CNRS , Centrale Marseille, iSm2, Marseille, France
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46
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Liang S, Zeng CC, Tian HY, Sun BG, Luo XG, Ren FZ. Electrochemically Oxidative α-C–H Functionalization of Ketones: A Cascade Synthesis of α-Amino Ketones Mediated by NH4I. J Org Chem 2016; 81:11565-11573. [DOI: 10.1021/acs.joc.6b01595] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Sen Liang
- Beijing
Advanced Innovation Center for Food Nutrition and Human Health, School
of Food and Chemical Engineering, Beijing Technology and Business University, Beijing100048, China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing100083, China
| | - Cheng-Chu Zeng
- Beijing
Advanced Innovation Center for Food Nutrition and Human Health, School
of Food and Chemical Engineering, Beijing Technology and Business University, Beijing100048, China
- College of Life Science & Bioengineering, Beijing University of Technology, Beijing100124, China
| | - Hong-Yu Tian
- Beijing
Advanced Innovation Center for Food Nutrition and Human Health, School
of Food and Chemical Engineering, Beijing Technology and Business University, Beijing100048, China
| | - Bao-Guo Sun
- Beijing
Advanced Innovation Center for Food Nutrition and Human Health, School
of Food and Chemical Engineering, Beijing Technology and Business University, Beijing100048, China
| | - Xu-Gang Luo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing100083, China
| | - Fa-zheng Ren
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing100083, China
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47
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Pericas À, Jiménez R, Granados A, Shafir A, Vallribera A, Roglans A, Molins E. Lanthanides-pybox: An Excellent Combination for Highly Enantioselective Electrophilic α-Amination of Acyclic β-Keto Esters. Isolation of Ternary Pybox/Ln/β-Keto Ester Complexes. ChemistrySelect 2016. [DOI: 10.1002/slct.201600820] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Àlex Pericas
- Department of Chemistry and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Universitat Autònoma de Barcelona, Campus de la UAB; 08193-Cerdanyola del Vallès Barcelona Spain
| | - Rubén Jiménez
- Department of Chemistry and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Universitat Autònoma de Barcelona, Campus de la UAB; 08193-Cerdanyola del Vallès Barcelona Spain
| | - Albert Granados
- Department of Chemistry and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Universitat Autònoma de Barcelona, Campus de la UAB; 08193-Cerdanyola del Vallès Barcelona Spain
| | - Alexandr Shafir
- Department of Chemistry and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Universitat Autònoma de Barcelona, Campus de la UAB; 08193-Cerdanyola del Vallès Barcelona Spain
- Institut of Chemical Research of Catalonia (ICIQ); Barcelona Institute of Science and Technology; Avda. Països Catalans 16 43007 Tarragona Spain
| | - Adelina Vallribera
- Department of Chemistry and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Universitat Autònoma de Barcelona, Campus de la UAB; 08193-Cerdanyola del Vallès Barcelona Spain
| | - Anna Roglans
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química; Universitat de Girona, Campus de Montilivi; 17071- Girona Spain
| | - Elies Molins
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB; 08193-Cerdanyola del Vallès Barcelona Spain
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48
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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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49
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Huang Z, Wang C, Dong G. A Hydrazone-Based exo
-Directing-Group Strategy for β C−H Oxidation of Aliphatic Amines. Angew Chem Int Ed Engl 2016; 55:5299-303. [DOI: 10.1002/anie.201600912] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 02/24/2016] [Indexed: 02/02/2023]
Affiliation(s)
- Zhongxing Huang
- Department of Chemistry; University of Texas at Austin; 100 East 24th street Austin TX 78712 USA
| | - Chengpeng Wang
- Department of Chemistry; University of Texas at Austin; 100 East 24th street Austin TX 78712 USA
| | - Guangbin Dong
- Department of Chemistry; University of Texas at Austin; 100 East 24th street Austin TX 78712 USA
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50
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Huang Z, Wang C, Dong G. A Hydrazone-Based exo
-Directing-Group Strategy for β C−H Oxidation of Aliphatic Amines. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600912] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zhongxing Huang
- Department of Chemistry; University of Texas at Austin; 100 East 24th street Austin TX 78712 USA
| | - Chengpeng Wang
- Department of Chemistry; University of Texas at Austin; 100 East 24th street Austin TX 78712 USA
| | - Guangbin Dong
- Department of Chemistry; University of Texas at Austin; 100 East 24th street Austin TX 78712 USA
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