1
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Russo C, Volpe C, Santoro F, Brancaccio D, Di Porzio A, Carotenuto A, Randazzo A, Grimaud L, Vitale MR, Protti S, Giustiniano M. Visible Light-promoted C(sp 3)-H α-Carbamoylation of Cyclic Ethers with Isocyanides. Chemistry 2024; 30:e202401997. [PMID: 38873846 DOI: 10.1002/chem.202401997] [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: 05/22/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/15/2024]
Abstract
A protocol exploiting isocyanides as carbamoylating agents for the α-C(sp3)-H functionalization of cyclic ethers has been optimized via a combined visible light-driven hydrogen atom transfer/Lewis acid-catalyzed approach. The isocyanide substrate scope revealed an exquisite functional group compatibility (18 examples, with yields up to 99 %). Both radical and polar trapping, kinetic isotopic effect and real-time NMR studies support the mechanistic hypothesis and provide insightful details for the design of new chemical processes involving the generation of oxocarbenium ions.
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Affiliation(s)
- Camilla Russo
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Carmine Volpe
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Federica Santoro
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Diego Brancaccio
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Anna Di Porzio
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Alfonso Carotenuto
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Antonio Randazzo
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Laurence Grimaud
- Laboratoire des Biomolécules (LBM), Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Maxime R Vitale
- Laboratoire des Biomolécules (LBM), Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | - Stefano Protti
- PhotoGreenLab, Department of Chemistry, University of Pavia, viale Taramelli 12, 27100, Pavia, Italy
| | - Mariateresa Giustiniano
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
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2
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Huang C, Qin YS, Wang CL, Xiao P, Tang S, Liu HJ, Wei Z, Cai H. Visible light-induced C(sp 3)-H azolation of ethers via radical-polar crossover. Chem Commun (Camb) 2024; 60:2669-2672. [PMID: 38351890 DOI: 10.1039/d3cc06210d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2024]
Abstract
Reported herein is a photochemical strategy for C(sp3)-H azolation of ethers via a hydrogen-atom transfer and radical-polar crossover process, offering efficient access to valuable N-alkylated azoles under visible-light irradiation. The protocol is metal-free and photocatalyst-free, and exhibits good to excellent yields and broad substrate scope with regard to azoles. EPR experiments provide evidence for the formation of intermediates formed in situ.
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Affiliation(s)
- Cheng Huang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China.
| | - Yu-Shu Qin
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China.
| | - Chen-Lu Wang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China.
| | - Peng Xiao
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China.
| | - Sheng Tang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China.
| | - Hong-Jun Liu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China.
| | - Zhenhong Wei
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China.
| | - Hu Cai
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China.
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3
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Ioannou DI, Capaldo L, Sanramat J, Reek JNH, Noël T. Accelerated Electrophotocatalytic C(sp 3 )-H Heteroarylation Enabled by an Efficient Continuous-Flow Reactor. Angew Chem Int Ed Engl 2023; 62:e202315881. [PMID: 37972351 DOI: 10.1002/anie.202315881] [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: 10/20/2023] [Revised: 11/13/2023] [Accepted: 11/16/2023] [Indexed: 11/19/2023]
Abstract
Electrophotocatalytic transformations are garnering attention in organic synthesis, particularly for accessing reactive intermediates under mild conditions. Moving these methodologies to continuous-flow systems, or flow ElectroPhotoCatalysis (f-EPC), showcases potential for scalable processes due to enhanced irradiation, increased electrode surface, and improved mixing of the reaction mixture. Traditional methods sequentially link photochemical and electrochemical reactions, using flow reactors connected in series, yet struggle to accommodate reactive transient species. In this study, we introduce a new flow reactor concept for electrophotocatalysis (EPC) that simultaneously utilizes photons and electrons. The reactor is designed with a transparent electrode and employs cost-effective materials. We used this technology to develop an efficient process for electrophotocatalytic heteroarylation of C(sp3 )-H bonds. Importantly, the same setup can also facilitate purely electrochemical and photochemical transformations. This reactor represents a significant advancement in electrophotocatalysis, providing a framework for its application in flow for complex synthetic transformations.
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Affiliation(s)
- Dimitris I Ioannou
- Flow Chemistry Group, van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098, XH Amsterdam, The Netherlands
- Supramolecular and Homogeneous Catalysis Group, van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098, XH Amsterdam, The Netherlands
| | - Luca Capaldo
- Flow Chemistry Group, van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098, XH Amsterdam, The Netherlands
- SynCat Lab, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124, Parma, Italy
| | - Jiri Sanramat
- Flow Chemistry Group, van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098, XH Amsterdam, The Netherlands
| | - Joost N H Reek
- Supramolecular and Homogeneous Catalysis Group, van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098, XH Amsterdam, The Netherlands
| | - Timothy Noël
- Flow Chemistry Group, van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098, XH Amsterdam, The Netherlands
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4
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Deore JP, De M. Semiconductor Quantum Dots Act as Photocatalysts for Carbon-Carbon Bond Formation: Selective Functionalization of Xanthene's 9H Position. J Org Chem 2023; 88:16292-16301. [PMID: 37978938 DOI: 10.1021/acs.joc.3c01801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
The potential of CdSe, CdS, MoS2, and WS2 QDs as semiconductor photocatalysts for selective functionalization of the xanthene 9H position through carbon-carbon bond formation has been investigated. Our study reveals valuable insights into the energy-transfer and electron-transfer pathways involved in these reactions, as well as the radical polar crossover (RPC) and triplet-to-triplet energy transfer (TTEnT) processes. Notably, this approach offers a range of intriguing features, including visible-light-mediated processes, inexpensive catalytic systems, mild reaction conditions, broad substrate scope, unfunctionalized starting materials, and suitability for gram-scale synthesis. This study makes a significant contribution to the newly emerging field of QD-catalyzed reactions, paving the way for future explorations.
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Affiliation(s)
- Jiteshkumar P Deore
- Department of Organic Chemistry, Indian Institute of Science, Bengaluru 560012, India
| | - Mrinmoy De
- Department of Organic Chemistry, Indian Institute of Science, Bengaluru 560012, India
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5
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Deore JP, De M. Synthesis of biologically important tetrahydroisoquinoline (THIQ) motifs using quantum dot photocatalyst and evaluation of their anti-bacterial activity. Org Biomol Chem 2023; 21:9049-9053. [PMID: 37936558 DOI: 10.1039/d3ob01305g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Our study introduces an efficient photocatalytic approach for synthesizing biologically significant C1-substituted tetrahydroisoquinoline (THIQ) motifs, employing WS2 quantum dots (QDs) as catalysts. This method enables the formation of C-C and C-P bonds at the C1 position of the THIQ motif. The resulting compounds exhibit substantial antimicrobial activity against methicillin-resistant Staphylococcus aureus (MRSA) bacteria, with low minimum inhibitory concentration (MIC) values. Notably, the WS2 QD catalyst demonstrates recyclability and suitability for gram-scale reactions, underscoring the sustainability and scalability of our approach. Overall, our research presents a versatile and cost-effective strategy for synthesizing C1-substituted THIQ derivatives, highlighting their potential as novel therapeutic agents in biology and medicinal chemistry.
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Affiliation(s)
- Jiteshkumar P Deore
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India.
| | - Mrinmoy De
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India.
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6
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Zhang LY, Wang NX, Lucan D, Cheung W, Xing Y. Recent Advances in Aerobic Oxidative of C-H Bond by Molecular Oxygen Focus on Heterocycles. Chemistry 2023; 29:e202301700. [PMID: 37390122 DOI: 10.1002/chem.202301700] [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: 05/28/2023] [Revised: 06/23/2023] [Accepted: 06/29/2023] [Indexed: 07/02/2023]
Abstract
Aerobic oxidative cross-coupling represents one of the most straightforward and atom-economic methods for construction of C-C and C-X (X=N, O, S, or P) bonds using air as a sustainable external oxidant. The oxidative coupling of C-H bonds in heterocyclic compounds can effectively increase their molecular complexity by introducing new functional groups through C-H bond activation, or by formation of new heterocyclic structures through cascade construction of two or more sequential chemical bonds. This is very useful as it can increase the potential applications of these structures in natural products, pharmaceuticals, agricultural chemicals, and functional materials. This is a representative overview of recent progress since 2010 on green oxidative coupling reactions of C-H bond using O2 or air as internal oxidant focus on Heterocycles. It aims to provide a platform for expanding the scope and utility of air as green oxidant, together with a brief discussion on research into the mechanisms behind it.
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Affiliation(s)
- Lei-Yang Zhang
- Technical Institute of Physics and Chemistry &, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
| | - Nai-Xing Wang
- Technical Institute of Physics and Chemistry &, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
| | - Dumitra Lucan
- Technical Sciences Academy of Romania ASTR, Dacia Avenue no.26, Bucharest, Romania
| | - William Cheung
- Department of Chemistry, Hofstra University, Hempstead, NY 11549, United States
| | - Yalan Xing
- Department of Chemistry, Hofstra University, Hempstead, NY 11549, United States
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7
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Dey S, Das A, Yadav RN, Boruah PJ, Bakli P, Baishya T, Sarkar K, Barman A, Sahu R, Maji B, Paul AK, Hossain MF. Visiblelight-induced ternary electron donor-acceptor complex enabled synthesis of 2-(2-hydrazinyl) thiazole derivatives and the assessment of their antioxidant and antidiabetic therapeutic potential. Org Biomol Chem 2023; 21:1771-1779. [PMID: 36727530 DOI: 10.1039/d2ob02308c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A mild and eco-friendly visible-light-induced synthesis of 2-(2-hydrazinyl) thiazole from readily accessible thiosemicarbazide, carbonyl, and phenacyl bromide in the absence of a metal catalyst and/or any extrinsic photosensitizer is reported. This approach only requires a source of visible light and a green solvent at room temperature to produce the medicinally privileged scaffolds of hydrazinyl-thiazole derivatives in good to outstanding yields. Experimental studies support the in situ formation of a visible-light-absorbing, photosensitized colored ternary EDA complex. The next step is to prepare a pair of radicals in an excited state, which makes it easier to prepare thiazole derivatives through a SET and PCET process. DFT calculations additionally supported the mechanistic analysis of the course of the reaction. The antioxidant and antidiabetic properties of some of the compounds in the synthesized library were tested in vitro. All the investigated compounds demonstrated appreciable antioxidant activity, as evidenced by the reducing power experiment and the IC50 values of the DPPH radical scavenging experiment. Furthermore, the IC50 values for 4c, 4d, and 4g also demonstrated a strong α-amylase inhibitory effect.
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Affiliation(s)
- Sovan Dey
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling-734013, India.
| | - Arindam Das
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling-734013, India.
| | - Ram Naresh Yadav
- Department of Chemistry, Faculty of Engineering & Technology, Veer Bahadur Singh Purvanchal University, Jaunpur-222003, U.P, India
| | | | - Prerana Bakli
- Department of Chemistry, NIT, Meghalaya, Shillong-793003, India
| | - Tania Baishya
- Department of Pharmaceutical Technology, University of North Bengal, Raja Rammohunpur, Darjeeling-734013, India
| | - Koushik Sarkar
- Department of Chemical Sciences, IISER Kolkata, Mohanpur-741246, Nadia, WB, India
| | - Anup Barman
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling-734013, India.
| | - Ranabir Sahu
- Department of Pharmaceutical Technology, University of North Bengal, Raja Rammohunpur, Darjeeling-734013, India
| | - Biplab Maji
- Department of Chemical Sciences, IISER Kolkata, Mohanpur-741246, Nadia, WB, India
| | - Amit Kumar Paul
- Department of Chemistry, NIT, Meghalaya, Shillong-793003, India
| | - Md Firoj Hossain
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling-734013, India.
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8
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Ramdar M, Kazemi F, Eskandari P, Mirzaei M, Kaboudin B, Taran Z. N-Formylation of Amines via Trapping of Degradation Intermediate of Ethers. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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9
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Lone pair-π interaction induced regioselective sulfonation of ethers under light irradiation. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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10
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Deore J, De M. Photoredox C(sp3)‐C(sp2) Cross‐Dehydrogenative Coupling of Xanthene with β‐keto moiety using MoS2 Quantum Dot (QD) Catalyst. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Cui M, Wang R, Yang Q, Kuang C. Copper-Promoted One-Pot Sandmeyer-Type Reaction for the Synthesis of N-Aryltriazoles. J Org Chem 2022; 87:9654-9662. [PMID: 35880792 DOI: 10.1021/acs.joc.2c00697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report the copper-catalyzed one-pot Sandmeyer-type reaction of aromatic amines with triazoles to afford N-aryl-1,2,3-triazoles. Diazonium salts, formed from aromatic amines and tert-butyl nitrite in the presence of fluoroboric acid, reacted with triazoles in a copper-catalyzed Sandmeyer-type reaction. The reaction proceeded under mild conditions to afford N-aryltriazoles in moderate to good yields. This method is amenable to a wide range of aromatic amines and triazoles and shows diverse functional group tolerance. Inhibition of the reaction upon the addition of free radical scavengers suggested a radical pathway, in which the aryl radical, copper, and triazole formed a complex that underwent reductive elimination to give aryltriazole compounds; this is consistent with the mechanism underlying the Sandmeyer reaction. Thus, we demonstrate a new effective strategy for the construction of C-N bonds via Sandmeyer-type reactions and a valuable alternative approach for the synthesis of aryltriazole derivatives.
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Affiliation(s)
- Menghan Cui
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China
| | - Rong Wang
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China
| | - Qing Yang
- State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences, Fudan University, Shanghai 200438, China
| | - Chunxiang Kuang
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China
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12
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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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13
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Ni H, Li C, Shi X, Hu X, Mao H. Visible-Light-Promoted Fe(III)-Catalyzed N-H Alkylation of Amides and N-Heterocycles. J Org Chem 2022; 87:9797-9805. [PMID: 35857034 DOI: 10.1021/acs.joc.2c00854] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The combination of the radical chemistry of ligand-to-metal charge transfer with metal catalysis by a single iron salt helps to realize the visible-light-promoted N-H alkylation of amides and N-heterocycles. A wide variety of amides and nitrogen-containing heterocycles were tolerated in our protocol to give N-alkylated products. The applicability of this protocol was further demonstrated by late-stage alkylation of N-H-containing pharmaceuticals. Moreover, N-H-alkylated α-amino tetrahydrofurans could be transformed into versatile ring-opened amino alcohols under reducing conditions. A mechanistic study revealed that hydrogen atom transfer by a tert-butoxyl radical and a chlorine radical was responsible for the activation of C(sp3)-H precursors.
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Affiliation(s)
- Hangcheng Ni
- College of Pharmacy, Jinhua Polytechnic, Jinhua 321007, People's Republic of China.,Jinhua Branch, Sichuan Industrial Institute of Antibiotics, Chengdu University, Jinhua 321007, People's Republic of China
| | - Chaoming Li
- Jinhua Branch, Sichuan Industrial Institute of Antibiotics, Chengdu University, Jinhua 321007, People's Republic of China
| | - Xingzi Shi
- Jinhua Branch, Sichuan Industrial Institute of Antibiotics, Chengdu University, Jinhua 321007, People's Republic of China
| | - Xianyue Hu
- College of Pharmacy, Jinhua Polytechnic, Jinhua 321007, People's Republic of China
| | - Hui Mao
- College of Pharmacy, Jinhua Polytechnic, Jinhua 321007, People's Republic of China
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14
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Abstract
Synthetic chemists have long focused on selective C(sp 3)-N bond-forming approaches in response to the high value of this motif in natural products, pharmaceutical agents and functional materials. In recent years, visible light-induced protocols have become an important synthetic platform to promote this transformation under mild reaction conditions. These photo-driven methods rely on converting visible light into chemical energy to generate reactive but controllable radical species. This Review highlights recent advances in this area, mostly after 2014, with an emphasis placed on C(sp 3)-H bond activations, including amination of olefins and carbonyl compounds, and cross-coupling reactions.
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15
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Nguyen QH, Hwang HS, Cho EJ, Shin S. Energy Transfer Photolysis of N-Enoxybenzotriazoles into Benzotriazolyl and α-Carbonyl Radicals. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02862] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Quynh H. Nguyen
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Ho Seong Hwang
- Department of Chemistry, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Eun Jin Cho
- Department of Chemistry, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Seunghoon Shin
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
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16
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Zhang T, Wang Y, Wang B, Jin W, Xia Y, Liu C, Zhang Y. Visible‐Light‐Induced Oxidation of Diazenyl‐Protected Tetrahydroisoquinolines and Isoindolines for the Synthesis of Functionalized Lactams. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101506] [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)
- Tao Zhang
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of Chemistry Xinjiang University Urumqi 830046 P. R. China
| | - Yanhong Wang
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of Chemistry Xinjiang University Urumqi 830046 P. R. China
| | - Bin Wang
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of Chemistry Xinjiang University Urumqi 830046 P. R. China
| | - Weiwei Jin
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of Chemistry Xinjiang University Urumqi 830046 P. R. China
| | - Yu Xia
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of Chemistry Xinjiang University Urumqi 830046 P. R. China
| | - Chenjiang Liu
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of Chemistry Xinjiang University Urumqi 830046 P. R. China
- College of Future Technology Xinjiang University Urumqi 830046 P. R. China
| | - Yonghong Zhang
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of Chemistry Xinjiang University Urumqi 830046 P. R. China
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17
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Wang X, Lei J, Guo S, Zhang Y, Ye Y, Tang S, Sun K. Radical selenation of C(sp 3)-H bonds to asymmetric selenides and mechanistic study. Chem Commun (Camb) 2022; 58:1526-1529. [PMID: 35050276 DOI: 10.1039/d1cc06323e] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Selenides are important structural motifs with a broad range of biological activities and versatile transformational abilities. In this study, a novel and mild method was developed for the facile synthesis of asymmetric selenides under metal-free conditions. The key features of this reaction include good functional-group tolerance, the use of readily available reagents and cheap, low-toxicity solvent, and amenability to gram-scale synthesis. The results of preliminary radical-trapping experiments and a kinetic isotope effect study support a radical process.
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Affiliation(s)
- Xin Wang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, Shandong, P. R. China.
| | - Jia Lei
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, Shandong, P. R. China.
| | - Sa Guo
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, Shandong, P. R. China.
| | - Yan Zhang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, Shandong, P. R. China.
| | - Yong Ye
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Shi Tang
- College of Chemistry and Chemical Engineering, Jishou University, Jishou, 416000, China
| | - Kai Sun
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, Shandong, P. R. China.
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18
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Murray PD, Cox JH, Chiappini ND, Roos CB, McLoughlin EA, Hejna BG, Nguyen ST, Ripberger HH, Ganley JM, Tsui E, Shin NY, Koronkiewicz B, Qiu G, Knowles RR. Photochemical and Electrochemical Applications of Proton-Coupled Electron Transfer in Organic Synthesis. Chem Rev 2022; 122:2017-2291. [PMID: 34813277 PMCID: PMC8796287 DOI: 10.1021/acs.chemrev.1c00374] [Citation(s) in RCA: 172] [Impact Index Per Article: 86.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Indexed: 12/16/2022]
Abstract
We present here a review of the photochemical and electrochemical applications of multi-site proton-coupled electron transfer (MS-PCET) in organic synthesis. MS-PCETs are redox mechanisms in which both an electron and a proton are exchanged together, often in a concerted elementary step. As such, MS-PCET can function as a non-classical mechanism for homolytic bond activation, providing opportunities to generate synthetically useful free radical intermediates directly from a wide variety of common organic functional groups. We present an introduction to MS-PCET and a practitioner's guide to reaction design, with an emphasis on the unique energetic and selectivity features that are characteristic of this reaction class. We then present chapters on oxidative N-H, O-H, S-H, and C-H bond homolysis methods, for the generation of the corresponding neutral radical species. Then, chapters for reductive PCET activations involving carbonyl, imine, other X═Y π-systems, and heteroarenes, where neutral ketyl, α-amino, and heteroarene-derived radicals can be generated. Finally, we present chapters on the applications of MS-PCET in asymmetric catalysis and in materials and device applications. Within each chapter, we subdivide by the functional group undergoing homolysis, and thereafter by the type of transformation being promoted. Methods published prior to the end of December 2020 are presented.
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Affiliation(s)
- Philip
R. D. Murray
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
| | - James H. Cox
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
| | - Nicholas D. Chiappini
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
| | - Casey B. Roos
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
| | | | - Benjamin G. Hejna
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
| | - Suong T. Nguyen
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
| | - Hunter H. Ripberger
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
| | - Jacob M. Ganley
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
| | - Elaine Tsui
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
| | - Nick Y. Shin
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
| | - Brian Koronkiewicz
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
| | - Guanqi Qiu
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
| | - Robert R. Knowles
- Department of Chemistry, Princeton
University, Princeton, New Jersey 08544, United States
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19
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Wan T, Capaldo L, Laudadio G, Nyuchev AV, Rincón JA, García‐Losada P, Mateos C, Frederick MO, Nuño M, Noël T. Decatungstate-Mediated C(sp 3 )-H Heteroarylation via Radical-Polar Crossover in Batch and Flow. Angew Chem Int Ed Engl 2021; 60:17893-17897. [PMID: 34060204 PMCID: PMC8457183 DOI: 10.1002/anie.202104682] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/29/2021] [Indexed: 12/13/2022]
Abstract
Photocatalytic hydrogen atom transfer is a very powerful strategy for the regioselective C(sp3 )-H functionalization of organic molecules. Herein, we report on the unprecedented combination of decatungstate hydrogen atom transfer photocatalysis with the oxidative radical-polar crossover concept to access the direct net-oxidative C(sp3 )-H heteroarylation. The present methodology demonstrates a high functional group tolerance (40 examples) and is scalable when using continuous-flow reactor technology. The developed protocol is also amenable to the late-stage functionalization of biologically relevant molecules such as stanozolol, (-)-ambroxide, podophyllotoxin, and dideoxyribose.
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Affiliation(s)
- Ting Wan
- Flow Chemistry GroupVan't Hoff Institute for Molecular Sciences (HIMS)University of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Luca Capaldo
- Flow Chemistry GroupVan't Hoff Institute for Molecular Sciences (HIMS)University of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Gabriele Laudadio
- Flow Chemistry GroupVan't Hoff Institute for Molecular Sciences (HIMS)University of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Alexander V. Nyuchev
- Department of Organic ChemistryLobachevsky State University of Nizhny NovgorodGagarina Avenue 23603950Nizhny NovgorodRussia
| | - Juan A. Rincón
- Centro de Investigación Lilly S.A.Avda. de la Industria 3028108Alcobendas-MadridSpain
| | - Pablo García‐Losada
- Centro de Investigación Lilly S.A.Avda. de la Industria 3028108Alcobendas-MadridSpain
| | - Carlos Mateos
- Centro de Investigación Lilly S.A.Avda. de la Industria 3028108Alcobendas-MadridSpain
| | - Michael O. Frederick
- Small Molecule Design and DevelopmentEli Lilly and CompanyIndianapolisIN46285USA
| | - Manuel Nuño
- Vapourtec Ltd.Park Farm Business CentreFornham St GenevieveBury St EdmundsSuffolkIP28 6TSUK
| | - Timothy Noël
- Flow Chemistry GroupVan't Hoff Institute for Molecular Sciences (HIMS)University of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
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20
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Wan T, Capaldo L, Laudadio G, Nyuchev AV, Rincón JA, García‐Losada P, Mateos C, Frederick MO, Nuño M, Noël T. Decatungstate‐Mediated C(sp
3
)–H Heteroarylation via Radical‐Polar Crossover in Batch and Flow. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104682] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ting Wan
- Flow Chemistry Group Van't Hoff Institute for Molecular Sciences (HIMS) University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Luca Capaldo
- Flow Chemistry Group Van't Hoff Institute for Molecular Sciences (HIMS) University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Gabriele Laudadio
- Flow Chemistry Group Van't Hoff Institute for Molecular Sciences (HIMS) University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Alexander V. Nyuchev
- Department of Organic Chemistry Lobachevsky State University of Nizhny Novgorod Gagarina Avenue 23 603950 Nizhny Novgorod Russia
| | - Juan A. Rincón
- Centro de Investigación Lilly S.A. Avda. de la Industria 30 28108 Alcobendas-Madrid Spain
| | - Pablo García‐Losada
- Centro de Investigación Lilly S.A. Avda. de la Industria 30 28108 Alcobendas-Madrid Spain
| | - Carlos Mateos
- Centro de Investigación Lilly S.A. Avda. de la Industria 30 28108 Alcobendas-Madrid Spain
| | - Michael O. Frederick
- Small Molecule Design and Development Eli Lilly and Company Indianapolis IN 46285 USA
| | - Manuel Nuño
- Vapourtec Ltd. Park Farm Business Centre Fornham St Genevieve Bury St Edmunds Suffolk IP28 6TS UK
| | - Timothy Noël
- Flow Chemistry Group Van't Hoff Institute for Molecular Sciences (HIMS) University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
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21
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More SG, Kamble RB, Suryavanshi G. Oxidative Radical-Mediated Addition of Ethers to Quinone Imine Ketals: An Access to Hemiaminals. J Org Chem 2021; 86:2107-2116. [DOI: 10.1021/acs.joc.0c02254] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Satish G. More
- Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201 002, India
| | - Rohit B. Kamble
- Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201 002, India
| | - Gurunath Suryavanshi
- Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201 002, India
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22
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Pramanik M, Choudhuri K, Mathuri A, Mal P. Dithioacetalization or thioetherification of benzyl alcohols using 9-mesityl-10-methylacridinium perchlorate photocatalyst. Chem Commun (Camb) 2020; 56:10211-10214. [PMID: 32748901 DOI: 10.1039/d0cc02352c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report herein the use of 9-mesityl-10-methylacridinium perchlorate as the visible-light photocatalyst for dithioacetalization or thioetherification of benzyl alcohols in one pot using aerial dioxygen as a terminal oxidant. EPR analysis and Stern-Volmer quenching studies helped to rationalize the single electron transfer (SET) mechanism.
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Affiliation(s)
- Milan Pramanik
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India.
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23
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Chen J, Wu W, Li Q, Wei W. Visible‐Light Induced C(
sp
3
)−H Functionalization for the Formation of C−N Bonds under Metal Catalyst‐Free Conditions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000448] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jin‐Yang Chen
- College of Chemistry and Chemical EngineeringYangtze Normal University Chongqing 408000 People's Republic of China
| | - Wenfeng Wu
- College of Chemistry and Materials EngineeringGuiyang University Guiyang 550005 People's Republic of China
| | - Qiang Li
- College of Chemistry and Materials EngineeringGuiyang University Guiyang 550005 People's Republic of China
- Institution of Functional Organic Molecules and MaterialsSchool of Chemistry and Chemical EngineeringLiaocheng University Liaocheng 252059 People's Republic of China
| | - Wen‐Ting Wei
- State Key Laboratory Base of Novel Functional Materials and Preparation ScienceSchool of Materials Science and Chemical EngineeringNingbo University Ningbo Zhejiang 315211 People's Republic of China
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24
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Mondal A, Mukhopadhyay C. Construction of Carbon-Carbon and Carbon-Heteroatom Bonds: Enabled by Visible Light. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200211115154] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The present review provides an overview of visible light-mediated environment-
friendly approaches over the past decade for the formation of carbon-carbon and
carbon-heteroatom framework. This area has recently emerged as a versatile, environmentally
benign and green platform for the development of a highly sustainable synthetic
methodology. According to the recent advancements, visible light has come to the forefront
in synthetic organic chemistry as a powerful green strategy for the activation of small
molecules.
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Affiliation(s)
- Animesh Mondal
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata-700009, India
| | - Chhanda Mukhopadhyay
- Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata-700009, India
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25
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Song S, Meng Y, Li Q, Wei W. Recent Progress in the Construction of C−N Bonds
via
Metal‐Free Radical C(
sp
3
)−H Functionalization. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000055] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Si‐Zhe Song
- State Key Laboratory Base of Novel Functional Materials and Preparation Science, State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 People's Republic of China
| | - Ya‐Nan Meng
- State Key Laboratory Base of Novel Functional Materials and Preparation Science, State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 People's Republic of China
| | - Qiang Li
- Institution of Functional Organic Molecules and Materials, School of Chemistry and Chemical EngineeringLiaocheng University Liaocheng 252059 People's Republic of China
| | - Wen‐Ting Wei
- State Key Laboratory Base of Novel Functional Materials and Preparation Science, State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 People's Republic of China
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26
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Huang H, Strater ZM, Lambert TH. Electrophotocatalytic C-H Functionalization of Ethers with High Regioselectivity. J Am Chem Soc 2020; 142:1698-1703. [PMID: 31904939 DOI: 10.1021/jacs.9b11472] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The highly regioselective electrophotocatalytic C-H functionalization of ethers is described. These reactions are catalyzed by a trisaminocyclopropenium (TAC) ion at mild electrochemical potential with visible light irradiation. Ethers undergo oxidant-free coupling with isoquinolines, alkenes, alkynes, pyrazoles, and purines with typically high regioselectivity for the less-hindered α-position. The reaction is proposed to operate via hydrogen atom transfer (HAT) from the substrate to the photoexcited TAC radical dication, thus demonstrating a new reactivity mode for this electrophotocatalyst.
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Affiliation(s)
- He Huang
- Department of Chemistry and Chemical Biology , Cornell University , Ithaca , New York 14853 , United States
| | - Zack M Strater
- Department of Chemistry , Columbia University , New York , New York 10027 , United States
| | - Tristan H Lambert
- Department of Chemistry and Chemical Biology , Cornell University , Ithaca , New York 14853 , United States.,Department of Chemistry , Columbia University , New York , New York 10027 , United States
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27
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Shamsabadi A, Maruani A, Ahmed N, Chudasama V. Aerobically-initiated C(sp3)–H bond amination through the use of activated azodicarboxylates. Org Biomol Chem 2020; 18:6258-6264. [DOI: 10.1039/d0ob01562h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this article we report a procedure for α-C(sp3)–H amination of ethereal compounds through use of azodicarboxylates as the nitrogen source and freely-available atmospheric oxygen to access ethereal radical intermediates via aerobic C–H activation.
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Affiliation(s)
| | | | - Nehaal Ahmed
- Department of Chemistry
- University College London
- London
- UK
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28
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Luo H, Tang Z, Wang T, Tian Y, Zhang Y, Li Y, Li S, Gong Y, Li B. Regioselective N1- and N2-heterocycloalkylation of N1-sulfonyl-1,2,3-triazoles. Org Chem Front 2020. [DOI: 10.1039/d0qo01111h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A tuneable and visible-light-driven three-component reaction between N1-sulfonyl-1,2,3-triazoles, saturated heterocycles, and N-bromosuccinimide for regioselective synthesis of N1- or N2-heterocycloalkylated 1,2,3-triazoles.
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Affiliation(s)
- Han Luo
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- P. R. China
| | - Zongyuan Tang
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- P. R. China
| | - Tao Wang
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- P. R. China
| | - Yi Tian
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- P. R. China
| | - Yuan Zhang
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- P. R. China
| | - You Li
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- P. R. China
| | - Shanshan Li
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- P. R. China
| | - Yiliang Gong
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- P. R. China
| | - Baosheng Li
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing
- P. R. China
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29
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Zhao MG, Li L, He RR, Zhang X, Ma JP, Su JH, Zheng W. 1,2,4-Triazolato paddlewheel dibismuth complexes with very short Bi( ii)–Bi( ii) bonds: bismuth( iii) oxidation of 1,2,4-triazolato anions into neutral N-1,2,4-triazolyl radicals. Dalton Trans 2020; 49:15190-15194. [DOI: 10.1039/d0dt03225e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Bismuth(iii) oxidation of 1,2,4-triazolato anions allowed paddlewheel 1,2,4-triazolato dibismuth complexes to be isolated and the reaction involved the neutral N-1,2,4-triazolyl radicals that were evidenced by EPR analysis.
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Affiliation(s)
- Ming-Gang Zhao
- Key Laboratory of Magnetic Molecules & Magnetic information materials Ministry of Education
- The School of Chemical and Materials Science
- Shanxi Normal University
- Linfen
- China
| | - Li Li
- Key Laboratory of Magnetic Molecules & Magnetic information materials Ministry of Education
- The School of Chemical and Materials Science
- Shanxi Normal University
- Linfen
- China
| | - Ru-Ru He
- Key Laboratory of Magnetic Molecules & Magnetic information materials Ministry of Education
- The School of Chemical and Materials Science
- Shanxi Normal University
- Linfen
- China
| | - Xiang Zhang
- Key Laboratory of Magnetic Molecules & Magnetic information materials Ministry of Education
- The School of Chemical and Materials Science
- Shanxi Normal University
- Linfen
- China
| | - Jian-Ping Ma
- College of Chemistry
- Chemical Engineering and Materials Science
- Shandong Normal University
- Jinan
- China
| | - Ji-Hu Su
- CAS Key Laboratory of Microscale Magnetic Resonance
- Department of Modern Physics
- University of Science and Technology of China
- Hefei 230026
- China
| | - Wenjun Zheng
- Key Laboratory of Magnetic Molecules & Magnetic information materials Ministry of Education
- The School of Chemical and Materials Science
- Shanxi Normal University
- Linfen
- China
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30
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Filimonov VO, Dianova LN, Beryozkina TV, Mazur D, Beliaev NA, Volkova NN, Ilkin VG, Dehaen W, Lebedev AT, Bakulev VA. Water/Alkali-Catalyzed Reactions of Azides with 2-Cyanothioacetamides. Eco-Friendly Synthesis of Monocyclic and Bicyclic 1,2,3-Thiadiazole-4-carbimidamides and 5-Amino-1,2,3-triazole-4-carbothioamides. J Org Chem 2019; 84:13430-13446. [PMID: 31547663 DOI: 10.1021/acs.joc.9b01599] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The reactions of thioamides with azides in water were studied. It was reliably shown that the reaction of 2-cyanothioacetamides 1 with various types of azides 2 in water in the presence of alkali presents an efficient, general, one-step, atom-economic, and eco-friendly method for the synthesis of 1,2,3-thiadiazol-4-carbimidamides 5 and 1,2,3-triazole-4-carbothioamides 4. This method can be extended to the one-pot reaction of sulfonyl chlorides and 6-chloropyrimidines 2'o with sodium azide, leading to final products in higher yields, that is, avoiding the isolation of unsafe sulfonyl azides. The method was furthermore applied to the reaction of N,N'-bis-(2-cyanothiocarbonyl)pyrazine 1h with sulfonyl azides to afford bicyclic 1,2,3-thiadiazoles 8 and 1,2,3-triazoles 9 connected via a 1,1'-piperazinyl linker. 2-Cyanothioacetamides 1 were also shown to react with aromatic azides in water in the presence of alkali to afford 1-aryl-5-amino-1,2,3-triazole-4-carbothioamides 11. In contrast to aromatic azides and similarly to sulfonyl azides, 6-azidopyrimidine-2,4-diones 2o-q react with cyanothioacetamides to form N-pyrimidin-6-yl-5-dialkylamino-1,2,3-thiadiazole-4-N-l-carbimidamides 12. A mechanism was proposed to rationalize the role of water in changing the reactivity of azides toward 2-cyanothioacetamides.
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Affiliation(s)
| | - Lidia N Dianova
- Ural Federal University , 19 Mira St. , Yekaterinburg 620002 , Russia
| | | | - Dmitrii Mazur
- Department of Chemistry , Lomonosov Moscow State University , Moscow 119991 , Russia
| | - Nikolai A Beliaev
- Ural Federal University , 19 Mira St. , Yekaterinburg 620002 , Russia
| | - Natalia N Volkova
- Ural Federal University , 19 Mira St. , Yekaterinburg 620002 , Russia
| | - Vladimir G Ilkin
- Ural Federal University , 19 Mira St. , Yekaterinburg 620002 , Russia
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry , KU Leuven , Celestijnenlaan 200F , Leuven B-3001 , Belgium
| | - Albert T Lebedev
- Department of Chemistry , Lomonosov Moscow State University , Moscow 119991 , Russia
| | - Vasiliy A Bakulev
- Ural Federal University , 19 Mira St. , Yekaterinburg 620002 , Russia
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31
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Cavedon C, Seeberger PH, Pieber B. Photochemical Strategies for Carbon–Heteroatom Bond Formation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901173] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Cristian Cavedon
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
- Department of Chemistry and Biochemistry Freie Universität Berlin Arnimallee 22 14195 Berlin Germany
| | - Peter H. Seeberger
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
- Department of Chemistry and Biochemistry Freie Universität Berlin Arnimallee 22 14195 Berlin Germany
| | - Bartholomäus Pieber
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
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32
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Bao P, Yue H, Meng N, Zhao X, Li J, Wei W. Copper-Catalyzed Three-Component Reaction of Alkynes, TMSN3, and Ethers: Regiocontrollable Synthesis of N1- and N2-Oxyalkylated 1,2,3-Triazoles. Org Lett 2019; 21:7218-7222. [DOI: 10.1021/acs.orglett.9b02295] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Pengli Bao
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165 Shandong, China
| | - Huilan Yue
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Qinghai 810008, China
| | - Na Meng
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165 Shandong, China
| | - Xiaohui Zhao
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Qinghai 810008, China
| | - Jiangsheng Li
- School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Wei Wei
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165 Shandong, China
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Qinghai 810008, China
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33
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DDQ-promoted direct C–H amination of ethers with N-alkoxyamides under visible-light irradiation and metal-free conditions. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130516] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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34
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Li Z, Wei Q, Song L, Han W, Wu X, Zhao Y, Xia F, Liu S. Highly Regioselective Radical Transformation of N-Sulfonyl-1,2,3-triazoles in Air. Org Lett 2019; 21:6413-6417. [DOI: 10.1021/acs.orglett.9b02269] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Zi Li
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Qinghua Wei
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Longlong Song
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Wangyujing Han
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Xiang Wu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Yun Zhao
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Fei Xia
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Shunying Liu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
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35
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Huang CY, Li J, Liu W, Li CJ. Diacetyl as a "traceless" visible light photosensitizer in metal-free cross-dehydrogenative coupling reactions. Chem Sci 2019; 10:5018-5024. [PMID: 31183051 PMCID: PMC6530541 DOI: 10.1039/c8sc05631e] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 04/07/2019] [Indexed: 12/22/2022] Open
Abstract
Minisci alkylation is of prime importance for its applicability in functionalizing diverse heteroarenes, which are core structures in many bioactive compounds. In alkyl radical generation processes, precious metal catalysts, high temperatures and excessive oxidants are generally involved, which lead to sustainability and safety concerns. Herein we report a new strategy using diacetyl (2,3-butanedione) as an abundant, visible light-sensitive and "traceless" hydrogen atom abstractor to achieve metal-free cross-dehydrogenative Minisci alkylation under mild conditions. Mechanistic studies supported hydrogen atom transfer (HAT) between an activated C(sp3)-H substrate and diacetyl. Moreover, with the assistance of di-tert-butyl peroxide (DTBP), the scope of the reaction could be extended to strong aliphatic C-H bonds via diacetyl-mediated energy transfer. The robustness of this strategy was demonstrated by functionalizing complex molecules such as quinine, fasudil, nicotine, menthol and alanine derivatives.
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Affiliation(s)
- Chia-Yu Huang
- Department of Chemistry , FRQNT Centre for Green Chemistry and Catalysis , McGill University , 801 Sherbrooke St. W. , Montreal , Quebec H3A 0B8 , Canada .
| | - Jianbin Li
- Department of Chemistry , FRQNT Centre for Green Chemistry and Catalysis , McGill University , 801 Sherbrooke St. W. , Montreal , Quebec H3A 0B8 , Canada .
| | - Wenbo Liu
- Department of Chemistry , FRQNT Centre for Green Chemistry and Catalysis , McGill University , 801 Sherbrooke St. W. , Montreal , Quebec H3A 0B8 , Canada .
| | - Chao-Jun Li
- Department of Chemistry , FRQNT Centre for Green Chemistry and Catalysis , McGill University , 801 Sherbrooke St. W. , Montreal , Quebec H3A 0B8 , Canada .
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36
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Yang S, Zhu S, Lu D, Gong Y. Formylation of Fluoroalkyl Imines through Visible-Light-Enabled H-Atom Transfer Catalysis: Access to Fluorinated α-Amino Aldehydes. Org Lett 2019; 21:2019-2024. [DOI: 10.1021/acs.orglett.9b00128] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sen Yang
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan, Hubei 430074, China
| | - Shuangyu Zhu
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan, Hubei 430074, China
| | - Dengfu Lu
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan, Hubei 430074, China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan, Hubei 430074, China
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37
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Singsardar M, Laru S, Mondal S, Hajra A. Visible-Light-Induced Regioselective Cross-Dehydrogenative Coupling of 2H-Indazoles with Ethers. J Org Chem 2019; 84:4543-4550. [DOI: 10.1021/acs.joc.9b00318] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mukta Singsardar
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Sudip Laru
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Susmita Mondal
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
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38
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Zhang M, Yang L, Yang H, An G, Li G. Visible Light Mediated C(sp3)‐H Alkenylation of Cyclic Ethers Enabled by Aryl Ketone. ChemCatChem 2019. [DOI: 10.1002/cctc.201802079] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Mengmeng Zhang
- Key Laboratory of Functional Inorganic Material Chemistry (MOE) School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
| | - Liming Yang
- Key Laboratory of Functional Inorganic Material Chemistry (MOE) School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
| | - Hui Yang
- Key Laboratory of Functional Inorganic Material Chemistry (MOE) School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
| | - Guanghui An
- Key Laboratory of Functional Inorganic Material Chemistry (MOE) School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
- College of Materials Science and Chemical EngineeringHarbin Engineering University Harbin 150001 P.R. China
| | - Guangming Li
- Key Laboratory of Functional Inorganic Material Chemistry (MOE) School of Chemistry and Materials ScienceHeilongjiang University No. 74, Xuefu Road, Nangang District Harbin 150080 P.R. China
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39
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Dian L, Xing Q, Zhang-Negrerie D, Du Y. Direct functionalization of alkyl ethers to construct hemiaminal ether skeletons (HESs). Org Biomol Chem 2019; 16:4384-4398. [PMID: 29781030 DOI: 10.1039/c8ob00793d] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Hemiaminal ether skeletons (HESs) are important backbones generally found in organic compounds. Compared to traditional functional group transformations, strategies for the C-H functionalization of alkyl ethers to construct HESs have drawn much attention in the past decade. In this review, we focus on the recent progress in developing various pathways to construct HESs via the direct functionalization of alkyl ethers, including: (a) the transition-metal-catalyzed nitrene insertion pathway, (b) the transition-metal-free organonitrenoid insertion pathway,
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Affiliation(s)
- Longyang Dian
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
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40
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Chen Z, Liu B, Liang P, Luo H, Zheng J, Wen X, Liu T, Luo G, Ye M. Construction of N-S and C-N Bonds from Reactions of Benzofuroxans with DMSO or THF. ACS OMEGA 2019; 4:281-291. [PMID: 31459330 PMCID: PMC6648239 DOI: 10.1021/acsomega.8b03353] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 12/25/2018] [Indexed: 05/06/2023]
Abstract
Novel ring-opening reactions are achieved employing benzofuroxan as a new type of iminating or aminating reagent. These diverse transformations give access to three types of molecular scaffolds, N-aryl dimethylsulfoximines, methanesulfonamides, and hemiaminal ethers, which are important structural motifs in organic and medicinal chemistry. The procedures feature solvent-involved reactions, easily available starting materials, operational simplicity, high atom economy, and the potential further transformation of nitro group.
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Affiliation(s)
- Zhengwang Chen
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
- Key
Laboratory of Functional Molecular Engineering of Guangdong Province, South China University of Technology, Guangzhou 510640, P. R. China
- E-mail: (Z.C.)
| | - Botao Liu
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Pei Liang
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Haiqing Luo
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Jing Zheng
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Xiaowei Wen
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Tanggao Liu
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Guotian Luo
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Min Ye
- Key
Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China
- E-mail: (M.Y.)
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41
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Roslan II, Ng KH, Jaenicke S, Chuah GK. Photocatalytic regeneration of brominating agent in the visible light-mediated synthesis of imidazo[1,2-a]pyridines. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00141g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Regenerating the brominating agent by erythrosine B closes a catalytic cycle for the construction of the imidazo[1,2-a]pyridine framework.
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Affiliation(s)
| | - Kian-Hong Ng
- Department of Chemistry
- National University of Singapore
- Singapore 117543
| | - Stephan Jaenicke
- Department of Chemistry
- National University of Singapore
- Singapore 117543
| | - Gaik-Khuan Chuah
- Department of Chemistry
- National University of Singapore
- Singapore 117543
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42
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Kong Y, Xu W, Ye F, Weng J. Recent Advances in Visible-Light-Induced Cross Dehydrogenation Coupling Reaction under Transition Metal-Free Conditions. CHINESE J ORG CHEM 2019. [DOI: 10.6023/cjoc201905016] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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43
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Bao P, Meng N, Lv Y, Yue H, Li JS, Wei W. Selective assembly of N1- and N2-alkylated 1,2,3-triazoles via copper-catalyzed decarboxylative cycloaddition of alkynyl carboxylic acids with ethers and azidotrimethylsilane. Org Chem Front 2019. [DOI: 10.1039/c9qo01277j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An efficient and regiocontrolled method for the synthesis of various N1- and N2 alkylated 1,2,3-triazoles via copper-catalyzed decarboxylative cycloaddition of alkynyl carboxylic acids with ethers and azidotrimethylsilane.
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Affiliation(s)
- Pengli Bao
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
| | - Na Meng
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
| | - Yufen Lv
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
| | - Huilan Yue
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and Key Laboratory of Tibetan Medicine Research
- Northwest Institute of Plateau Biology
- Chinese Academy of Sciences
- Qinghai 810008
- China
| | - Jiang-Sheng Li
- School of Chemistry and food Engineering
- Changsha University of Science and Technology
- Changsha
- China
| | - Wei Wei
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and Key Laboratory of Tibetan Medicine Research
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44
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Shah SS, Paul A, Bera M, Venkatesh Y, Singh NDP. Metallaphotoredox-Mediated Csp2–H Hydroxylation of Arenes under Aerobic Conditions. Org Lett 2018; 20:5533-5536. [PMID: 30179488 DOI: 10.1021/acs.orglett.8b01973] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Sk. Sheriff Shah
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Amrita Paul
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Manoranjan Bera
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Yarra Venkatesh
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - N. D. Pradeep Singh
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
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45
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Mutra MR, Dhandabani GK, Wang JJ. Mild Access to N-Formylation of Primary Amines using Ethers as C1 Synthons under Metal-Free Conditions. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800783] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mohana Reddy Mutra
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; No. 100, Shih-Chuan 1st Rd, Sanmin District Kaohsiung City 807 Taiwan
| | - Ganesh Kumar Dhandabani
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; No. 100, Shih-Chuan 1st Rd, Sanmin District Kaohsiung City 807 Taiwan
| | - Jeh-Jeng Wang
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; No. 100, Shih-Chuan 1st Rd, Sanmin District Kaohsiung City 807 Taiwan
- Department of Medical Research; Kaohsiung Medical University Hospital; No. 100, Tzyou 1st Rd, Sanmin District Kaohsiung City 807 Taiwan
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46
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Sideri IK, Voutyritsa E, Kokotos CG. Photoorganocatalysis, small organic molecules and light in the service of organic synthesis: the awakening of a sleeping giant. Org Biomol Chem 2018; 16:4596-4614. [PMID: 29888357 DOI: 10.1039/c8ob00725j] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Photocatalysis, the use of light to promote organic transformations, is a field of catalysis that has received limited attention despite existing for over 100 years. With the revolution of photoredox catalysis in 2008, the rebirth or awakening of the field of photoorganocatalysis has brought new ideas and reactions to organic synthesis. This review will focus on the sudden outburst of literature regarding the use of small organic molecules as photocatalysts after 2013. In particular, it will focus on acridinium salts, benzophenones, pyrylium salts, thioxanthone derivatives, phenylglyoxylic acid, BODIPYs, flavin derivatives, and classes of organic molecules as catalysts for the photocatalytic generation of C-C and C-X bonds.
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Affiliation(s)
- Ioanna K Sideri
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Errika Voutyritsa
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Christoforos G Kokotos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
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47
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Zhang H, Lei A. Visible-Light-Induced C−H Functionalization and C−C/C−X Bond-Forming Oxidative Cross-Coupling Reactions. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800214] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Heng Zhang
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan Hubei 430072 P. R. China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan Hubei 430072 P. R. China
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 P. R. China
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48
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Wales SM, Merisor EG, Adcock HV, Pearce CA, Strutt IR, Lewis W, Hamza D, Moody CJ. Diastereoselective Synthesis of Highly Substituted, Amino- and Pyrrolidino-Tetrahydrofurans as Lead-Like Molecular Scaffolds. Chemistry 2018; 24:8233-8239. [DOI: 10.1002/chem.201801046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Indexed: 01/15/2023]
Affiliation(s)
- Steven M. Wales
- School of Chemistry; University Park; University of Nottingham; Nottingham NG7 2RD United Kingdom
| | - Elena G. Merisor
- Sygnature Discovery Ltd, Biocity; Pennyfoot Street Nottingham NG1 1GF United Kingdom
| | - Holly V. Adcock
- Sygnature Discovery Ltd, Biocity; Pennyfoot Street Nottingham NG1 1GF United Kingdom
| | - Christopher A. Pearce
- Sygnature Discovery Ltd, Biocity; Pennyfoot Street Nottingham NG1 1GF United Kingdom
| | - Ian R. Strutt
- Sygnature Discovery Ltd, Biocity; Pennyfoot Street Nottingham NG1 1GF United Kingdom
| | - William Lewis
- School of Chemistry; University Park; University of Nottingham; Nottingham NG7 2RD United Kingdom
| | - Daniel Hamza
- Sygnature Discovery Ltd, Biocity; Pennyfoot Street Nottingham NG1 1GF United Kingdom
| | - Christopher J. Moody
- School of Chemistry; University Park; University of Nottingham; Nottingham NG7 2RD United Kingdom
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49
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Abstract
An electrochemical bisindolylation of ethers was developed. Carried out under ambient conditions and in the absence of any chemical oxidants, this reaction exhibits a broad substrate scope and good functional group compatibility.
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Affiliation(s)
- Ke-Si Du
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou , Guangdong 510640 , China
| | - Jing-Mei Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering , South China University of Technology , Guangzhou , Guangdong 510640 , China
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50
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Torti E, Protti S, Fagnoni M. N-Aryltrifluoromethanesulfonimides as new trifluoromethylating agents for the (photo)catalyst-free functionalization of (hetero)aromatics. Chem Commun (Camb) 2018; 54:4144-4147. [DOI: 10.1039/c8cc00938d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
An N-arylsulfonimide was successfully employed as a new reagent for the photoinduced trifluoromethylation of (hetero)aromatics. The reactions took place by UV irradiation, sunlight exposure and under continuous-flow conditions.
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Affiliation(s)
- Edoardo Torti
- PhotoGreen Lab
- Department of Chemistry University of Pavia
- 27100 Pavia
- Italy
| | - Stefano Protti
- PhotoGreen Lab
- Department of Chemistry University of Pavia
- 27100 Pavia
- Italy
| | - Maurizio Fagnoni
- PhotoGreen Lab
- Department of Chemistry University of Pavia
- 27100 Pavia
- Italy
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