1
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Zuo L, Yu F, Zhao S, Wang W, Wang S. Copper-Catalyzed, Intramolecular Amination of Unactivated C(sp 3)-H Bonds through Radical Relay. J Org Chem 2024. [PMID: 39208327 DOI: 10.1021/acs.joc.4c01163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Although copper-catalyzed amination of activated C(sp3)-H bonds through radical relay has been developed, amination of unactivated C(sp3)-H bonds is rare. Herein, copper-catalyzed intramolecular amination of remote unactivated C(sp3)-H bonds is reported. The reaction is conducted in a mild and effective manner with moderate to good yields, demonstrating broad tolerance toward various functional groups and exhibiting complete regio- and chemoselectivities. This innovation supplies novel synthetic pathways for the construction of saturated nitrogenated heterocycles.
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Affiliation(s)
- Liyan Zuo
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Fan Yu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Shuai Zhao
- Qingdao Zhongda Agritech Co., Ltd., Building 1, No. 368 Hedong Road, High-tech Zone, Qingdao, Shandong 266100, P. R. China
| | - Wengui Wang
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Shoufeng Wang
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
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2
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Yu F, Wang W, Wang S. Copper-Catalyzed, Interrupted Remote Fluoromethylthiolation of Unactivated C(sp3)-H Bonds. Org Lett 2024; 26:2068-2072. [PMID: 38426710 DOI: 10.1021/acs.orglett.4c00336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
An efficient copper-catalyzed selective fluoromethylthiolation of an inert δ-C(sp3)-H bond in sulfonamides was reported. In the presence of a copper catalyst and PhSO2SRf, the radical generated through 1,5-hydrogen atom transfer (HAT) was sufficiently trapped by PhSO2SRf, instead of copper, which was prevalent in metal-catalyzed radical-relay processes, incorporating a fluoromethylthio group into molecules. The general substrate scope and mild conditions endowed the method with wide potential applications in pharmaceuticals and agrochemicals.
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Affiliation(s)
- Fan Yu
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, People's Republic of China
| | - Wengui Wang
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, People's Republic of China
| | - Shoufeng Wang
- Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, People's Republic of China
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3
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Prasad V, Ranga Rao V, Gangadhar M, Nechipadappu SK, Adiyala PR. Regioselective Radical Cascade Cyclizations of Alkyne-Tethered Cyclohexadienones with Chalcogenides under Visible-Light Catalysis. ACS OMEGA 2023; 8:35809-35821. [PMID: 37810637 PMCID: PMC10552108 DOI: 10.1021/acsomega.3c03362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 09/07/2023] [Indexed: 10/10/2023]
Abstract
Herein, we demonstrated a silver/K2S2O8-mediated highly regio- and diastereoselective 6/5-exo trig radical cascade cyclization of alkyne-tethered cyclohexadienones with sulfonyl hydrazides or sodium sulfinates and subsequent selenation to access 6,6-dihydrochromenone and 6,5-fused tetrahydro benzofuranone derivatives. This reaction protocol features high functional group compatibility and has a wide substrate scope providing a variety of dihydrochromenones and tetrahydro benzofuranone derivatives in good to excellent yields. The reaction proceeds via the attack of a sulfonyl radical to alkyne over the activated Michael acceptor. The TEMPO quenching experiment implies the presence of a radical intermediate. Further synthetic versatility of 6,6- and 5,6-fused derivatives is also showcased.
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Affiliation(s)
- Vadla
Shiva Prasad
- Department
of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vadithya Ranga Rao
- Department
of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Maram Gangadhar
- Department
of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sunil Kumar Nechipadappu
- Laboratory
of X-Ray Crystallography, Department of Analytical Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Praveen Reddy Adiyala
- Department
of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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4
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Khandelia T, Ghosh S, Panigrahi P, Mandal R, Boruah D, Patel BK. Photo-induced 1,2-thiohydroxylation of maleimide involving disulfide and singlet oxygen. Chem Commun (Camb) 2023; 59:11196-11199. [PMID: 37650219 DOI: 10.1039/d3cc03296e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
A visible light-driven di-functionalization of maleimide with disulfide and in situ-generated singlet oxygen offers selective 1,2-thiohydroxylation under additive-free conditions. Here the disulfide plays the dual role of photosensitizer and the coupling reagent. Notably, the hydroxyl functionality originates from the in situ generated singlet oxygen followed by HAT from H2O (moisture).
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Affiliation(s)
- Tamanna Khandelia
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, Assam, India.
| | - Subhendu Ghosh
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, Assam, India.
| | - Pritishree Panigrahi
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, Assam, India.
| | - Raju Mandal
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, Assam, India.
| | - Deepjyoti Boruah
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, Assam, India.
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, Assam, India.
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5
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Du Z, Liu S, Li Y, Peng J, Sun Y, Song Y, Liu Y, Zeng X. Fluoroamide-Directed Regiodivergent C-Alkylation of Nitroalkanes. Org Lett 2023. [PMID: 37314942 DOI: 10.1021/acs.orglett.3c01297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Herein, by exploiting different activation modes of fluoroamides, we achieved α- and δ-C(sp3)-H alkylation of nitroalkanes with switchable regioselectivity. Cu catalysis enabled the interception of a distal C-centered radical by a N-centered radical to couple nitroalkanes and unactivated δ-C-H bonds. In addition, imines generated in situ by fluoroamides were trapped by nitroalkanes to realize the α-C-H alkylation of amides. Both of those scalable protocols have broad substrate scopes and good functional group tolerance.
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Affiliation(s)
- Zhibin Du
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Shiwen Liu
- College of Textiles and Clothing, Institute of Flexible Functional Materials, Yancheng Institute of Technology, Yancheng, Jiangsu 224000, China
| | - Yuke Li
- School of Pharmacy, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Junjie Peng
- School of Pharmacy, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Yanji Sun
- School of Pharmacy, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Yanshan Song
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Yuxuan Liu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Xiaojun Zeng
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
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6
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Xu H, Mo JN, Liu WD, Zhao J. N-Heterocyclic Carbene-Catalyzed Remote C(sp3)−H Acylation of Amides. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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7
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Han Y, Shi J, Li S, Dan T, Yang W, Yang M. Selective editing of a peptide skeleton via C-N bond formation at N-terminal aliphatic side chains. Chem Sci 2022; 13:14382-14386. [PMID: 36545141 PMCID: PMC9749142 DOI: 10.1039/d2sc04909k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 11/04/2022] [Indexed: 11/23/2022] Open
Abstract
The applications of peptides and peptidomimetics have been demonstrated in the fields of therapeutics, diagnostics, and chemical biology. Strategies for the direct late-stage modification of peptides and peptidomimetics are highly desirable in modern drug discovery. Transition-metal-catalyzed C-H functionalization is emerging as a powerful strategy for late-stage peptide modification that is able to construct functional groups or increase skeletal diversity. However, the installation of directing groups is necessary to control the site selectivity. In this work, we describe a transition metal-free strategy for late-stage peptide modification. In this strategy, a linear aliphatic side chain at the peptide N-terminus is cyclized to deliver a proline skeleton via site-selective δ-C(sp3)-H functionalization under visible light. Natural and unnatural amino acids are demonstrated as suitable substrates with the transformations proceeding with excellent regio- and stereo-selectivity.
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Affiliation(s)
- Yujie Han
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE & School of Chemistry and Chemical Engineering Shaanxi Normal University 620 West Chang'an Ave Xi'an 710119 China
| | - Junjie Shi
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE & School of Chemistry and Chemical Engineering Shaanxi Normal University 620 West Chang'an Ave Xi'an 710119 China
| | - Songrong Li
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE & School of Chemistry and Chemical Engineering Shaanxi Normal University 620 West Chang'an Ave Xi'an 710119 China
| | - Tingting Dan
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE & School of Chemistry and Chemical Engineering Shaanxi Normal University 620 West Chang'an Ave Xi'an 710119 China
| | - Wenwen Yang
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE & School of Chemistry and Chemical Engineering Shaanxi Normal University 620 West Chang'an Ave Xi'an 710119 China
| | - Mingyu Yang
- Key Laboratory of Applied Surface and Colloid Chemistry of MOE & School of Chemistry and Chemical Engineering Shaanxi Normal University 620 West Chang'an Ave Xi'an 710119 China
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8
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Chen X, Wang Q, Zhang Z, Niu ZJ, Shi WY, Gong XP, Jiao RQ, Gao MH, Liu XY, Liang YM. Copper-Catalyzed Hydrogen Atom Transfer and Aryl Migration Strategy for the Arylalkylation of Activated Alkenes. Org Lett 2022; 24:4338-4343. [PMID: 35687371 DOI: 10.1021/acs.orglett.2c01427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we describe the copper-catalyzed arylalkylation of activated alkenes via hydrogen-atom transfer and aryl migration strategy. The reaction was carried out through a radical-mediated continuous migration pathway using N-fluorosulfonamides as the alkyl source. The primary, secondary, and tertiary alkyl radicals formed by intramolecular hydrogen-atom transfer proceeded smoothly. This methodology is an efficient approach for the synthesis of various amide derivatives possessing a quaternary carbon center with good yields and high regioselectivity.
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Affiliation(s)
- Xi Chen
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Qiang Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, P.R. China
| | - Zhe Zhang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Zhi-Jie Niu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Wei-Yu Shi
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Xiao-Ping Gong
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Rui-Qiang Jiao
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Ming-Hui Gao
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Xue-Yuan Liu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
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9
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Zhang Z, Chen P, Liu G. Copper-catalyzed radical relay in C(sp 3)-H functionalization. Chem Soc Rev 2022; 51:1640-1658. [PMID: 35142305 DOI: 10.1039/d1cs00727k] [Citation(s) in RCA: 77] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Radical-involved transition metal (TM) catalysis has greatly enabled new reactivities in recent decades. Copper-catalyzed radical relay offers enormous potential in C(sp3)-H functionalization which combines the unique regioselectivity of hydrogen atom transfer (HAT) and the versatility of copper-catalyzed cross-coupling. More importantly, significant progress has been achieved in asymmetric C-H functionalization through judicious ligand design. This tutorial review will highlight the recent advances in this rapidly growing area, and we hope this survey will inspire future strategic developments for selective C(sp3)-H functionalization.
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Affiliation(s)
- Zuxiao Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese, Academy of Sciences, Shanghai 200032, China.
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese, Academy of Sciences, Shanghai 200032, China.
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10
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Wang X, Xue Y, Hu W, Shi L, Zhu X, Hao XQ, Song MP. Cu(II)-Catalyzed N-Directed Distal C(sp 3)-H Heteroarylation of Aliphatic N-Fluorosulfonamides. Org Lett 2022; 24:1055-1059. [PMID: 35080894 DOI: 10.1021/acs.orglett.1c04280] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A copper-catalyzed δ-regioselective C(sp3)-H heteroarylation of N-fluorosulfonamides has been developed. A broad range of heteroarenes were well tolerated and reacted with various N-fluorosulfonamides to give the corresponding heteroarylated amides in good yields. Notably, all types (1°, 2°, and 3°) of δ-C(sp3)-H bonds in the N-fluorosulfonamides could be regioselectively activated through the 1,5-HAT process. This protocol provides a practical strategy for the functionalization of heteroarenes and amides via forging a C(sp3)-C(sp2) bond.
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Affiliation(s)
- Xu Wang
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Yuting Xue
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Weinan Hu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Linlin Shi
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
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11
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Abstract
The majority of medicines contain a nitrogen atom within a five- or six- membered ring. To rapidly access both such aza-heterocycles, we sought to develop a remote C-H desaturation of amines. Inspired by the Hofmann-Löffler-Freytag synthesis of five-membered pyrrolidines, we tackled the century-old challenge of synthesizing six-membered piperidines by H-atom transfer. We present herein a double, vicinal C-H oxidation by dual catalysis, entailing Ir photocatalytic initiation of 1,5-HAT by an N-centered radical and Cu-catalyzed interception of the C-centered radical to facilitate desaturation. By this mechanism, two C-H bonds (δ and ε to N) are regioselectively removed from unbiased, remote positions of an alkyl chain. Over 50 examples illustrate efficiency, selectivity, functional group tolerance, and medicinal utility of this synthesis of both internal and terminal δ vinylic amines and aza-heterocycles. Mechanistic experiments probe the alkylcopper intermediate, as well as kinetics and regioselectivity of the HAT and elimination steps.
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12
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Rampon D, Seckler D, da Luz EQ, Paixão DB, Larroza AME, Schneider PH, Alves D. Transition metal catalysed direct sulfanylation of unreactive C-H bonds: an overview of the last two decades. Org Biomol Chem 2022; 20:6072-6177. [DOI: 10.1039/d2ob00986b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition metal catalysed direct sulfanylations of unreactive C-H bonds have become a unique and straightforward synthetic strategy in late-stage C-S bond formation of relevant complex molecules. Such transformations have represented...
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13
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Wei H, Zhang Z, Zhang X, Gao S, Wang T, Zhao M, Wei P, Wang M. Copper-catalyzed intramolecular iminolactonization cyclization reactions of remote C(sp 3)–H bonds in carboxamides. Org Biomol Chem 2022; 20:8912-8916. [DOI: 10.1039/d2ob01711c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
A novel and efficient synthetic method for iminolactones by copper-catalyzed intramolecular C(sp3)–H bond functionalization of carboxamides via a cascade process is reported for the first time.
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Affiliation(s)
- He Wei
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
| | - Zhenhua Zhang
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
| | - Xiang Zhang
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
| | - Shuo Gao
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
| | - Tongtong Wang
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
| | - Mengmeng Zhao
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
| | - Pifeng Wei
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
| | - Min Wang
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China
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14
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Dolbier W, Wei S, Le S, Lei Z, Zhou L, Zhang Z. Difluoromethylarylation of α, β- Unsaturated Amides via a Photocatalytic Radical Smiles Rearrangement. Org Biomol Chem 2022; 20:2064-2068. [DOI: 10.1039/d2ob00186a] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photocatalytic Smiles rearrangement, triggered by radical difluoromethylation of conjugated arylsulfonylated amides, was developed to construct both β-difluoromethyl amide and heterocyclic scaffolds selectively. This transformation features mild conditions and broad...
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15
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Zhong LJ, Lv GF, Ouyang XH, Li Y, Li JH. Copper-Catalyzed Fluoroamide-Directed Remote Benzylic C-H Olefination: Facile Access to Internal Alkenes. Org Chem Front 2022. [DOI: 10.1039/d2qo00822j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general, site-selective copper-catalyzed fluoroamide-directed remote benzylic C-H olefination of N-fluoroamides with terminal alkenes for producing internal alkenes is disclosed. This protocol proceeds via a hybrid Cu-radical mechanism, which synergistically...
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16
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Zhong LJ, Xiong ZQ, Ouyang XH, Li Y, Song RJ, Sun Q, Lu X, Li JH. Intermolecular 1,2-Difunctionalization of Alkenes Enabled by Fluoroamide-Directed Remote Benzyl C(sp 3)-H Functionalization. J Am Chem Soc 2021; 144:339-348. [PMID: 34935377 DOI: 10.1021/jacs.1c10053] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A copper-catalyzed remote benzylic C-H functionalization strategy enabling 1,2-difunctionalization of alkenes with 2-methylbenzeneamides and nucleophiles, including alcohols, indoles, pyrroles, and the intrinsic amino groups, is reported, which is characterized by its redox-neutral conditions, exquisite site-selectivity, broad substrate scope, and wide utilizations of late-stage modifying bioactive molecules. This reaction proceeds through nitrogen-centered radical generation, hydrogen atom transfer, benzylic radical addition across the alkenes, single-electron oxidation, and carbocation electrophilic course cascades. While using external nucleophiles manipulates three-component alkene alkylalkoxylation and alkyl-heteroarylation with 2-methylbenzeneamides to access dialkyl ethers, 3-alkylindoles, and 3-alkylpyrroles, omitting the external nucleophiles results in two-component alkylamidation ([5+2] annulation) of alkenes with 2-methylbenzeneamides to benzo-[f][1,2]thiazepine 1,1-dioxides.
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Affiliation(s)
- Long-Jin Zhong
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Zhi-Qiang Xiong
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Xuan-Hui Ouyang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Yang Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Qing Sun
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid Surface & Fujian Provincial Key Laboratory for Theoretical and Computational Chemistry, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China.,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China.,Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), Hunan Normal University, Changsha 410081, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 475004, China
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17
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Abstract
Desaturation of inert aliphatic C-H bonds in alkanes to form the corresponding alkenes is challenging. In this communication, a new and practical strategy for remote site-selective desaturation of amides via radical chemistry is reported. The readily installed N-allylsulfonylamide moiety serves as an N radical precursor. Intramolecular 1,5-hydrogen atom transfer from an inert C-H bond to the N-radical generates a translocated C-radical which is subsequently oxidized and deprotonated to give the corresponding alkene. The commercially available methanesulfonyl chloride is used as reagent and a Cu/Ag-couple as oxidant. The remote desaturation is realized on different types of unactivated sp3 -C-H bonds. The potential synthetic utility of this method is further demonstrated by the dehydrogenation of natural product derivatives and drugs.
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Affiliation(s)
- Yong Xia
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 4048149MünsterGermany
- School of Chemistry and Chemical EngineeringChongqing UniversityNo.55 University Town South Road, Shapingba DistrictChongqing400044P. R. China
| | - Kalipada Jana
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 4048149MünsterGermany
| | - Armido Studer
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 4048149MünsterGermany
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18
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Sinha SK, Guin S, Maiti S, Biswas JP, Porey S, Maiti D. Toolbox for Distal C-H Bond Functionalizations in Organic Molecules. Chem Rev 2021; 122:5682-5841. [PMID: 34662117 DOI: 10.1021/acs.chemrev.1c00220] [Citation(s) in RCA: 175] [Impact Index Per Article: 58.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Transition metal catalyzed C-H activation has developed a contemporary approach to the omnipresent area of retrosynthetic disconnection. Scientific researchers have been tempted to take the help of this methodology to plan their synthetic discourses. This paradigm shift has helped in the development of industrial units as well, making the synthesis of natural products and pharmaceutical drugs step-economical. In the vast zone of C-H bond activation, the functionalization of proximal C-H bonds has gained utmost popularity. Unlike the activation of proximal C-H bonds, the distal C-H functionalization is more strenuous and requires distinctly specialized techniques. In this review, we have compiled various methods adopted to functionalize distal C-H bonds, mechanistic insights within each of these procedures, and the scope of the methodology. With this review, we give a complete overview of the expeditious progress the distal C-H activation has made in the field of synthetic organic chemistry while also highlighting its pitfalls, thus leaving the field open for further synthetic modifications.
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Affiliation(s)
- Soumya Kumar Sinha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Srimanta Guin
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sudip Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Jyoti Prasad Biswas
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sandip Porey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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19
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Yu F, Li C, Wang C, Zhang H, Cao ZY. (1-Selenocyanatoethyl)benzene: A Selenocyanation Reagent for Site-Selective Selenocyanation of Inert Alkyl C(sp 3)-H Bonds. Org Lett 2021; 23:7156-7160. [PMID: 34468157 DOI: 10.1021/acs.orglett.1c02564] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A new, simple, yet easily accessible, (1-selenocyanatoethyl)benzene has been designed and applied as a SeCN group transfer reagent for selenocyanation of aliphatic C(sp3)-H bonds for the first time. This protocol is featured with mild reaction conditions and wide substrate scope. Control experiments reveal that a radical-group transfer mechanism might be involved.
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Affiliation(s)
- Fei Yu
- Department of Chemistry, College of Science, China University of Petroleum (East China) Qingdao, Shandong 266580, China
| | - Chuang Li
- Department of Chemistry, College of Science, China University of Petroleum (East China) Qingdao, Shandong 266580, China
| | - Chuangye Wang
- Department of Chemistry, College of Science, China University of Petroleum (East China) Qingdao, Shandong 266580, China
| | - Hongwei Zhang
- Department of Chemistry, College of Science, China University of Petroleum (East China) Qingdao, Shandong 266580, China
| | - Zhong-Yan Cao
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China
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20
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Xue Y, Shi L, Wang X, Yu X, Zhu X, Hao XQ, Song MP. Regioselective N-F and α C(sp 3)-H Arylation of Aliphatic N-Fluorosulfonamides with Imidazopyridines. Org Lett 2021; 23:6807-6812. [PMID: 34406015 DOI: 10.1021/acs.orglett.1c02381] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A regioselective arylation of aliphatic N-fluorosulfonamides with imidazopyridines enabled by breaking of N-F and α C(sp3)-H bond to form C-N and C-C bonds was described. With CuCl as the catalyst, a radical mechanism was proposed to produce N-arylated aliphatic sulfonamides via a N radical intermediate. Importantly, under acidic conditions, an in situ generated imine was the possible intermediate, which was trapped by imidazopyridines to form α C(sp3)-H arylated aliphatic sulfonamides. The current protocol featured a broad substrate scope, tunable reaction conditions, operational convenience, and good regioselectivity.
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Affiliation(s)
- Yuting Xue
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
| | - Linlin Shi
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
| | - Xu Wang
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
| | - Xiaoni Yu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou 450001, P. R. China
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21
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Sun QX, Chen H, Liu S, Wang XQ, Duan XH, Guo LN. Iron-Catalyzed Thiolation and Selenylation of Cycloalkyl Hydroperoxides via C-C Bond Cleavage. J Org Chem 2021; 86:11987-11997. [PMID: 34374284 DOI: 10.1021/acs.joc.1c01366] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A cheap iron-catalyzed C-C bond cleavage/thiolation and selenylation of cycloalkyl hydroperoxides are presented. This redox-neutral protocol provides efficient access to diverse distal keto-functionalized thioethers and selenium compounds. Remarkably, only some amounts of disulfides are required for this transformation.
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Affiliation(s)
- Qing-Xin Sun
- Department of Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - He Chen
- Department of Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Shuai Liu
- Department of Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xiao-Qiang Wang
- Department of Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xin-Hua Duan
- Department of Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China.,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Li-Na Guo
- Department of Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
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22
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Wang L, Xia Y, Derdau V, Studer A. Remote Site-Selective Radical C(sp 3 )-H Monodeuteration of Amides using D 2 O. Angew Chem Int Ed Engl 2021; 60:18645-18650. [PMID: 34114304 PMCID: PMC8456965 DOI: 10.1002/anie.202104254] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/26/2021] [Indexed: 12/18/2022]
Abstract
Site-selective incorporation of deuterium into biologically active compounds is of high interest in pharmaceutical industry. We present a mild and environmentally benign metal-free method for the remote selective radical C-H monodeuteration of aliphatic C-H bonds in various amides with inexpensive heavy water (D2 O) as the deuterium source. The method uses the easily installed N-allylsulfonyl moiety as an N-radical precursor that generates the remote C-radical via site-selective 1,5- or 1,6-hydrogen atom transfer (HAT). Methyl thioglycolate, that readily exchanges its proton with D2 O, serves as the radical deuteration reagent and as a chain-carrier. The highly site-selective monodeuteration has been applied to different types of unactivated sp3 -C-H bonds and also to the deuteration of C-H bonds next to heteroatoms. The potential utility of this method is further demonstrated by the site-selective incorporation of deuterium into natural product derivatives and drugs.
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Affiliation(s)
- Lin Wang
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 4048149MünsterGermany
| | - Yong Xia
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 4048149MünsterGermany
| | - Volker Derdau
- Sanofi (Germany)Integrated Drug Discovery, Isotope ChemistryIndustriepark Höchst, G87665926FrankfurtGermany
| | - Armido Studer
- Organisch-Chemisches InstitutWestfälische Wilhelms-UniversitätCorrensstrasse 4048149MünsterGermany
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23
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Wang L, Xia Y, Derdau V, Studer A. Remote Site‐Selective Radical C(sp
3
)−H Monodeuteration of Amides using D
2
O. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Lin Wang
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Yong Xia
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Volker Derdau
- Sanofi (Germany) Integrated Drug Discovery, Isotope Chemistry Industriepark Höchst, G876 65926 Frankfurt Germany
| | - Armido Studer
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
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24
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Zhang H, Yu F, Li C, Tian P, Zhou Y, Cao ZY. Iron-Catalyzed, Site-Selective Difluoromethylthiolation (-SCF 2H) and Difluoromethylselenation (-SeCF 2H) of Unactivated C(sp 3)-H Bonds in N-Fluoroamides. Org Lett 2021; 23:4721-4725. [PMID: 34080880 DOI: 10.1021/acs.orglett.1c01443] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The iron-catalyzed δ-C(sp3)-H bond difluoromethylthiolation and difluoromethylselenation of aliphatic amides with high site selectivity are reported. Essential to the success is the employment of an amide radical formed in situ to activate the inert C(sp3)-H bond and the utilization of the easily handled PhSO2SCF2H and PhSO2SeCF2H as coupling reagents under mild conditions. This scalable protocol exhibits a broad substrate scope bearing versatile functional groups. Mechanistic studies indicate that the reaction proceeds through -SCF2H and -SeCF2H radical transfer.
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Affiliation(s)
- Hongwei Zhang
- Department of Chemistry, College of Science, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Fei Yu
- Department of Chemistry, College of Science, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Chuang Li
- Department of Chemistry, College of Science, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Peiyuan Tian
- Department of Chemistry, College of Science, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Yulu Zhou
- Department of Chemistry, College of Science, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Zhong-Yan Cao
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
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25
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Zhou L, Wei S, Lei Z, Zhu G, Zhang Z. Transition-Metal-Free α Csp 3 -H Cyanation of Sulfonamides. Chemistry 2021; 27:7103-7107. [PMID: 33769613 DOI: 10.1002/chem.202100902] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Indexed: 12/18/2022]
Abstract
This report describes the site-selective α-functionalization of sulfonylamide derivatives through the in-situ generation of imine intermediates. The N-F sulfonylamides, which could facilitate the elimination to generate imines, are coupled with TBACN to efficiently and mildly afford α-amino cyanides. Comparing with Strecker reaction, this transformation offers a complementary strategy to efficiently construct α-amino cyanides from direct α C-H functionalization of sulfonylamindes. The reaction is also characterized by broad substrate scope and flash chromatography column free workup. More importantly, the new two-electron pathway to generate imines through manipulation of the leaving group allows us to achieve excellent α site-selectivity.
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Affiliation(s)
- Liejin Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Siqi Wei
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Ziran Lei
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
| | - Zuxiao Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, P. R. China
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26
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Wang D, He Q, Shi K, Xiong M, Zhou Y, Pan Y. Transition‐Metal‐Free Synthesis of Unsymmetrical Disulfides
via
Three‐Component Reaction of Thiosulfonates, Thiourea and Alkyl halides. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100165] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Dungai Wang
- Department of Chemistry Zhejiang University Hangzhou 310027 People's Republic of China
| | - Quan He
- Department of Chemistry Zhejiang University Hangzhou 310027 People's Republic of China
| | - Keqiang Shi
- Department of Chemistry Zhejiang University Hangzhou 310027 People's Republic of China
| | - Mingteng Xiong
- Department of Chemistry Zhejiang University Hangzhou 310027 People's Republic of China
| | - Yifeng Zhou
- College of Life Sciences China Jiliang University Hangzhou 310018 People's Republic of China
| | - Yuanjiang Pan
- Department of Chemistry Zhejiang University Hangzhou 310027 People's Republic of China
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27
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Hu J, Yang X, Shi S, Cheng B, Luo X, Lan Y, Loh TP. Metal-free C(sp 3)-H functionalization of sulfonamides via strain-release rearrangement. Chem Sci 2021; 12:4034-4040. [PMID: 34163674 PMCID: PMC8179522 DOI: 10.1039/d0sc06603f] [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: 12/02/2020] [Accepted: 01/17/2021] [Indexed: 11/21/2022] Open
Abstract
With the increasing awareness of sustainable chemistry principles, the development of an efficient and mild strategy for C(sp3)-H bond activation of nitrogen-containing compounds without the utilization of any oxidant and metal is still highly desired and challenging. Herein, we present a metal-free reaction system that enables C-H bond functionalization of aliphatic sulfonamides using DABCO as a promoter under mild conditions, affording a series of α,β-unsaturated imines in good yields with high selectivities. This protocol tolerates a broad range of functionalities and can serve as a powerful synthetic tool for the late-stage modification of complex compounds. More importantly, control experiments and detailed DFT calculations suggest that this process involves [2 + 2] cyclization/ring-cleavage reorganization, which opens up a new platform for the establishment of other related reorganization reactions.
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Affiliation(s)
- Jiefeng Hu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University Nanjing 211816 China
| | - Xianyu Yang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University Nanjing 211816 China
| | - Shasha Shi
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University Nanjing 211816 China
| | - Bo Cheng
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University Nanjing 211816 China
| | - Xiaoling Luo
- Chongqing Key Laboratory of Inorganic Functional Materials, College of Chemistry, Chongqing Normal University Chongqing 401331 China
| | - Yu Lan
- College of Chemistry, Institute of Green Catalysis, Zhengzhou University Zhengzhou Henan 450001 China
| | - Teck-Peng Loh
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University Nanjing 211816 China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
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28
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Guo W, Wang Q, Zhu J. Visible light photoredox-catalysed remote C–H functionalisation enabled by 1,5-hydrogen atom transfer (1,5-HAT). Chem Soc Rev 2021; 50:7359-7377. [DOI: 10.1039/d0cs00774a] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The generation of heteroatom-centred radicals followed by intramolecular 1,5-HAT and functionalisation of the translocated carbon-centred radical is an efficient way to functionalize chemo- and regio-selectively the remote unactivated C(sp3)–H bond.
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Affiliation(s)
- Weisi Guo
- College of Chemistry & Molecular Engineering
- Qingdao University of Science & Technology
- Qingdao
- P. R. China
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering
- École Polytechnique Fédérale de Lausanne
- EPFL-SB-ISIC-LSPN
- 1015 Lausanne
- Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering
- École Polytechnique Fédérale de Lausanne
- EPFL-SB-ISIC-LSPN
- 1015 Lausanne
- Switzerland
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29
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Muñoz-Molina JM, Belderrain TR, Pérez PJ. Recent Advances in Copper-Catalyzed Radical C–H Bond Activation Using N–F Reagents. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0040-1707234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This Short Review is aimed at giving an update in the area of copper-catalyzed C–H functionalization involving nitrogen-centered radicals generated from substrates containing N–F bonds. These processes include intermolecular Csp3–H bond functionalization, remote Csp3–H bond functionalization via intramolecular hydrogen atom transfer (HAT), and Csp2–H bond functionalization, which might be of potential use in industrial applications in the future.1 Introduction2 Intermolecular Csp3–H Functionalization3 Remote Csp3–H Functionalization4 Csp2–H Functionalization5 Conclusion
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Affiliation(s)
| | | | - Pedro J. Pérez
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Química Sostenible and Departamento de Química, Universidad de Huelva
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30
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Min QQ, Yang JW, Pang MJ, Ao GZ, Liu F. Copper-catalyzed, N-directed remote C(sp3)–H azidation and thiocyanation. Org Chem Front 2021. [DOI: 10.1039/d0qo01012j] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A mild and practical protocol is developed for the synthesis of distal azido and thiocyanato alkylamines via N-directed remote C(sp3)–H functionalization.
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Affiliation(s)
- Qing-Qiang Min
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou
- People's Republic of China
| | - Jia-Wen Yang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou
- People's Republic of China
| | - Meng-Juan Pang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou
- People's Republic of China
| | - Gui-Zhen Ao
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou
- People's Republic of China
| | - Feng Liu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou
- People's Republic of China
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31
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Akhmadiev NS, Mescheryakova ES, Akhmetova VR, Ibragimov AG. Metal-free multicomponent synthesis of novel macrocyclic tetrathiadienes with cyano and amino groups. RSC Adv 2021; 11:18768-18775. [PMID: 35478647 PMCID: PMC9033490 DOI: 10.1039/d1ra02616j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 05/17/2021] [Indexed: 12/03/2022] Open
Abstract
The first synthesis of 5,12-diamino-7,14-bis(aryl)-1,4,8,11-tetrathiacyclotetradeca-5,12-diene-6,13-dicarbonitriles was performed as a multicomponent macroheterocyclization of malononitrile, aryl aldehydes, and 1,2-ethanedithiol in the presence of a catalytic amount of triethylamine in ethanol. The structures of the obtained macroheterocycles were confirmed by spectral methods, X-ray diffraction, and MALDI TOF mass spectrometry. Here we developed a selective method for the synthesis of previously unknown macrocyclic cyano and amino substituted 1,4,8,11-tetrathiacyclotetradeca-5,12-dienes.![]()
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Affiliation(s)
- Nail S. Akhmadiev
- Institute of Petrochemistry and Catalysis
- Russian Academy of Science
- 450075 Ufa
- Russian Federation
| | | | - Vnira R. Akhmetova
- Institute of Petrochemistry and Catalysis
- Russian Academy of Science
- 450075 Ufa
- Russian Federation
| | - Askhat G. Ibragimov
- Institute of Petrochemistry and Catalysis
- Russian Academy of Science
- 450075 Ufa
- Russian Federation
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32
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Ma ZY, Li M, Guo LN, Liu L, Wang D, Duan XH. Sulfonamide as Photoinduced Hydrogen-Atom Transfer Catalyst for Regioselective Alkylation of C(sp 3)-H Bonds Adjacent to Heteroatoms. Org Lett 2020; 23:474-479. [PMID: 33373258 DOI: 10.1021/acs.orglett.0c03992] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Based on the DFT calculations, the sulfonamide was explored as an efficient hydrogen-atom transfer catalyst for the C(sp3)-H alkylation. The combination of a metal-free photoredox catalyst and a sulfonamide catalyst enables highly regioselective alkylation of the C-H bonds adjacent to heteroatoms, which features broad substrate scope and excellent functional group compatibility. Remarkably, the sulfonamide catalyst was also applicable to the C(sp3)-C(sp3) couplings through the merger of photoredox, nickel, and HAT catalysis.
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Affiliation(s)
- Zhi-Yong Ma
- Department of Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, P.R. China
| | - Mengyang Li
- Department of Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, P.R. China
| | - Li-Na Guo
- Department of Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, P.R. China
| | - Le Liu
- Department of Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, P.R. China
| | - Dongdong Wang
- Department of Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, P.R. China
| | - Xin-Hua Duan
- Department of Chemistry, School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, P.R. China.,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P.R. China
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33
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Cannalire R, Pelliccia S, Sancineto L, Novellino E, Tron GC, Giustiniano M. Visible light photocatalysis in the late-stage functionalization of pharmaceutically relevant compounds. Chem Soc Rev 2020; 50:766-897. [PMID: 33350402 DOI: 10.1039/d0cs00493f] [Citation(s) in RCA: 164] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The late stage functionalization (LSF) of complex biorelevant compounds is a powerful tool to speed up the identification of structure-activity relationships (SARs) and to optimize ADME profiles. To this end, visible-light photocatalysis offers unique opportunities to achieve smooth and clean functionalization of drugs by unlocking site-specific reactivities under generally mild reaction conditions. This review offers a critical assessment of current literature, pointing out the recent developments in the field while emphasizing the expected future progress and potential applications. Along with paragraphs discussing the visible-light photocatalytic synthetic protocols so far available for LSF of drugs and drug candidates, useful and readily accessible synoptic tables of such transformations, divided by functional groups, will be provided, thus enabling a useful, fast, and easy reference to them.
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Affiliation(s)
- Rolando Cannalire
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy.
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34
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Zhong LJ, Li Y, An DL, Li JH. Heteroannulation of N-Fluoro-N-alkylsulfonamides with Terminal Alkynes via Remote C(sp3)–H Functionalization. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03853] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Long-Jin Zhong
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Yang Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - De-Lie An
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Jin-Heng Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), Hunan Normal University, Changsha 410081, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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35
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Ji YX, Li J, Li CM, Qu S, Zhang B. Manganese-Catalyzed N-F Bond Activation for Hydroamination and Carboamination of Alkenes. Org Lett 2020; 23:207-212. [PMID: 33305569 DOI: 10.1021/acs.orglett.0c03916] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A visible-light-promoted method for generating amidyl radicals from N-fluorosulfonamides via a manganese-catalyzed N-F bond activation strategy is reported. This protocol employs a simple manganese complex, Mn2(CO)10, as the precatalyst and a cheap silane, (MeO)3SiH, as both the hydrogen-atom donor and the F-atom acceptor, enabling intramolecular/intermolecular hydroaminations of alkenes, two-component carboamination of alkenes, and even three-component carboamination of alkenes. A wide range of valuable aliphatic sulfonamides can be readily prepared using these practical reactions.
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Affiliation(s)
- Yun-Xing Ji
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Jinxia Li
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Chun-Min Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Shuanglin Qu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Bo Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
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36
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Recent Advances in the Synthesis of Sulfides, Sulfoxides and Sulfones via C-S Bond Construction from Non-Halide Substrates. Catalysts 2020. [DOI: 10.3390/catal10111339] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The construction of a C-S bond is a powerful strategy for the synthesis of sulfur containing compounds including sulfides, sulfoxides, and sulfones. Recent methodological developments have revealed lots of novel protocols for C-S bond formation, providing easy access to sulfur containing compounds. Unlike traditional Ullmann typed C-S coupling reaction, the recently developed reactions frequently use non-halide compounds, such as diazo compounds and simple arenes/alkanes instead of aryl halides as substrates. On the other hand, novel C-S coupling reaction pathways involving thiyl radicals have emerged as an important strategy to construct C-S bonds. In this review, we focus on the recent advances on the synthesis of sulfides, sulfoxides, and sulfones from non-halide substrates involving C-S bond construction.
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37
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Su J, Ma X, Ou Z, Song Q. Deconstructive Functionalizations of Unstrained Carbon-Nitrogen Cleavage Enabled by Difluorocarbene. ACS CENTRAL SCIENCE 2020; 6:1819-1826. [PMID: 33145418 PMCID: PMC7596867 DOI: 10.1021/acscentsci.0c00779] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Indexed: 05/03/2023]
Abstract
Transition-metal- or oxidant-promoted deconstructive functionalizations of noncyclic carbon-nitrogen bonds are well established, usually only leaving one moiety functionalized toward the final product. In contrast, concomitant C- and N-functionalizations via the unstrained C(sp3)-N bond under metal- and oxidant-free conditions are very rare, which would favorably confer versatility and product diversity. Disclosed herein is the first difluorocarbene-induced deconstructive functionalizations embodying successive C(sp3)-N bond cleavage of cyclic amines and synchronous functionalization of both constituent atoms which would be preserved in the eventual molecular outputs under transition-metal-free and oxidant-free conditions. Correspondent access to deuterated formamides with ample isotopic incorporation was demonstrated by a switch to heavy water which is conceivably useful in pharmaceutical sciences. The current strategy remarkably administers a very convenient, operationally simple and novel method toward molecular diversity from readily available starting materials. Therefore, we project that these findings would be of broad interest to research endeavors encompassing fluorine chemistry, carbene chemistry, C-N bond activation, as well as medicinal chemistry.
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Affiliation(s)
- Jianke Su
- Institute of Next
Generation Matter Transformation, College of Material Sciences &
Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
| | - Xingxing Ma
- Institute of Next
Generation Matter Transformation, College of Material Sciences &
Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
| | - Zongliang Ou
- Institute of Next
Generation Matter Transformation, College of Material Sciences &
Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
| | - Qiuling Song
- Institute of Next
Generation Matter Transformation, College of Material Sciences &
Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at
Fuzhou University, Fuzhou, Fujian 350108, China
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38
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Wang Q, Tian P, Cao Z, Zhang H, Jiang C. Copper‐Catalyzed Remote Direct Thiocyanation of Alkyl C(
sp
3
)−H Bonds. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000754] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Qian Wang
- Department of Chemistry College of Science China University of Petroleum (East China) Qingdao 266580 People's Republic of China
| | - Peiyuan Tian
- Department of Chemistry College of Science China University of Petroleum (East China) Qingdao 266580 People's Republic of China
| | - Zhong‐Yan Cao
- College of Chemical Engineering Zhejiang University of Technology Chaowang Road 18# Hangzhou 310014 People's Republic of China
| | - Hongwei Zhang
- Department of Chemistry College of Science China University of Petroleum (East China) Qingdao 266580 People's Republic of China
| | - Cuiyu Jiang
- Department of Chemistry College of Science China University of Petroleum (East China) Qingdao 266580 People's Republic of China
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Guo P, Li Y, Zhang XG, Han JF, Yu Y, Zhu J, Ye KY. Redox Neutral Radical-Relay Cobalt Catalysis toward C-H Fluorination and Amination. Org Lett 2020; 22:3601-3606. [PMID: 32307998 DOI: 10.1021/acs.orglett.0c01072] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A redox neutral radical-relay cobalt-catalyzed intramolecular C-H fluorination of N-fluoroamides featuring the in situ formed cobalt fluorides as the latent radical fluorinating agents is reported. Moreover, the reactivity of such a cobalt catalysis could be diverted from C-H fluorination to amination by engineering substrates' conformational flexibility. Preliminary mechanistic studies (UV-vis spectroscopy, cyclic voltammetry studies and DFT calculations, etc.) support the reaction proceeding a redox neutral radical-relay mechanism.
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Affiliation(s)
- Peng Guo
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Yuanyuan Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xiang-Gui Zhang
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Jun-Fa Han
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Yi Yu
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Jun Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ke-Yin Ye
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
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40
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Min QQ, Yang JW, Pang MJ, Ao GZ, Liu F. Copper-Catalyzed Remote C(sp 3)-H Amination of Carboxamides. Org Lett 2020; 22:2828-2832. [PMID: 32207306 DOI: 10.1021/acs.orglett.0c00829] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Here we report a method for the site-selective intermolecular C(sp3)-H amination of carboxamides by merging transition-metal catalysis and the hydrogen atom transfer strategy. The reaction proceeds through a sequence of favorable single-electron transfer, 1,5-hydrogen atom transfer, and C-N cross-coupling steps, thus allowing access to a series of desired products. This reaction could accommodate a wide diversity of nitrogen nucleophiles as well as demonstrate excellent chemoselectivity and functional group compatibility.
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Affiliation(s)
- Qing-Qiang Min
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Jia-Wen Yang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Meng-Juan Pang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Gui-Zhen Ao
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Feng Liu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China.,Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People's Republic of China
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41
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Shi S, Zhang P, Luo C, Zhuo S, Zhang Y, Tang G, Zhao Y. Copper-Catalyzed Remote C(sp3)–H Phosphorothiolation of Sulfonamides and Carboxamides in a Multicomponent Reaction. Org Lett 2020; 22:1760-1764. [DOI: 10.1021/acs.orglett.0c00044] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Shanshan Shi
- Department of Chemistry, College of Chemistry and Chemical Engineering, and the Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Pengbo Zhang
- School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Chen Luo
- Department of Chemistry, College of Chemistry and Chemical Engineering, and the Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Shaohua Zhuo
- Department of Chemistry, College of Chemistry and Chemical Engineering, and the Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Yumeng Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, and the Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Guo Tang
- Department of Chemistry, College of Chemistry and Chemical Engineering, and the Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Yufen Zhao
- Department of Chemistry, College of Chemistry and Chemical Engineering, and the Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
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42
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Chen AD, Herbort JH, Wappes EA, Nakafuku KM, Mustafa DN, Nagib DA. Radical cascade synthesis of azoles via tandem hydrogen atom transfer. Chem Sci 2020; 11:2479-2486. [PMID: 34084413 PMCID: PMC8157396 DOI: 10.1039/c9sc06239d] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 01/24/2020] [Indexed: 12/12/2022] Open
Abstract
A radical cascade strategy for the modular synthesis of five-membered heteroarenes (e.g. oxazoles, imidazoles) from feedstock reagents (e.g. alcohols, amines, nitriles) has been developed. This double C-H oxidation is enabled by in situ generated imidate and acyloxy radicals, which afford regio- and chemo-selective β C-H bis-functionalization. The broad synthetic utility of this tandem hydrogen atom transfer (HAT) approach to access azoles is included, along with experiments and computations that provide insight into the selectivity and mechanism of both HAT events.
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Affiliation(s)
- Andrew D Chen
- Department of Chemistry and Biochemistry, The Ohio State University Columbus OH 43210 USA
| | - James H Herbort
- Department of Chemistry and Biochemistry, The Ohio State University Columbus OH 43210 USA
| | - Ethan A Wappes
- Department of Chemistry and Biochemistry, The Ohio State University Columbus OH 43210 USA
| | - Kohki M Nakafuku
- Department of Chemistry and Biochemistry, The Ohio State University Columbus OH 43210 USA
| | - Darsheed N Mustafa
- Department of Chemistry and Biochemistry, The Ohio State University Columbus OH 43210 USA
| | - David A Nagib
- Department of Chemistry and Biochemistry, The Ohio State University Columbus OH 43210 USA
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