1
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Fu SS, Yuan QQ, Ma L, Zhang ZM, Lu TB, Guo S. Oxidation of N-Alkyl(iso)quinolinium Salts Over TEMPO@Metal-Organic Framework Heterogeneous Photocatalyst †. CHEMSUSCHEM 2023; 16:e202202163. [PMID: 36545816 DOI: 10.1002/cssc.202202163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 12/17/2022] [Indexed: 06/17/2023]
Abstract
Quinolones and isoquinolones are of particular importance to pharmaceutical industry due to their diverse biological activities. However, their synthetic protocols were limited by high toxicity, high energy consumption, poor functional group tolerance and noble metal catalyst. This study concerns the development of a series of TEMPO@PCN-222 (TEMPO: 2,2,6,6-tetramethylpiperidinyl-1-oxy; PCN: porous coordination network) composite photocatalysts by coordinating different amount of 4-carboxy-TEMPO with the secondary building units of PCN-222. Upon visible-light irradiation, photogenerated holes in the highest occupied molecular orbital of PCN-222 can smoothly transfer to TEMPO, which can significantly boost the photosynthesis of bioactive (iso)quinolones from readily available N-alkyl(iso)quinolinium salts. TEMPO@PCN-222 exhibits an outstanding catalytic stability and substrate tolerance with a 1-methyl-2-quinolinone yield of 86.7 %, over four times that with PCN-222 (21.4 %). This work provides a new route to construct composite photocatalysts from abundant starting materials for efficient photosynthesis of high value-added chemicals.
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Affiliation(s)
- Shan-Shan Fu
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, Tianjin University of Technology, Tianjin, 300384, China
- College of Chemistry and Chemical Engineering, Key Laboratory of Fine Chemicals of College of Heilongjiang Province, Qiqihar University, Qiqihar, 161006, China
| | - Qiang-Qiang Yuan
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, Tianjin University of Technology, Tianjin, 300384, China
| | - Lihua Ma
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, Tianjin University of Technology, Tianjin, 300384, China
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Zhi-Ming Zhang
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, Tianjin University of Technology, Tianjin, 300384, China
| | - Tong-Bu Lu
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, Tianjin University of Technology, Tianjin, 300384, China
| | - Song Guo
- MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, Tianjin University of Technology, Tianjin, 300384, China
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2
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Oudeyer S, Levacher V, Beucher H, Brière JF. Recent Advances in Catalytic and Technology-Driven Radical Addition to N, N-Disubstituted Iminium Species. Molecules 2023; 28:molecules28031071. [PMID: 36770738 PMCID: PMC9921492 DOI: 10.3390/molecules28031071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/11/2023] [Accepted: 01/11/2023] [Indexed: 01/24/2023] Open
Abstract
Recently, radical chemistry has grown exponentially in the toolbox of organic synthetic chemists. Upon the (re)introduction of modern catalytic and technology-driven strategies, the implementation of highly reactive radical species is currently facilitated while expanding the scope of numerous synthetic methodologies. In this context, this review intends to cover the recent advances in radical-based transformations of N,N-disubstituted iminium substrates that encompass unique reactivities with respect to imines or protonated iminium salts. In particular, we have focused on the literature concerning the dipole type substrates, such as nitrones or azomethine imines, together with the chemistry of N+-X- (X = O, NR) azaarenium dipoles, which proved to be very versatile platforms in that field of research. The N-alkylazaarenium salts were been considered, which demonstrated specific reactivity profiles in radical chemistry.
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3
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Cai C, Zou D. Recent Progress in Benzylic C(sp 3)—H Functionalization of Toluene and Its Derivatives. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202201027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Chandra P. Recent Advancement in the Copper Mediated Synthesis of Heterocyclic Amides as Important Pharmaceutical and Agrochemicals. ChemistrySelect 2021. [DOI: 10.1002/slct.202103035] [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)
- Prakash Chandra
- School of Technology Pandit Deendayal Petroleum University Gandhinagar Gujarat 382007 India
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5
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Wang H, Cao F, Gao W, Wang X, Yang Y, Shi T, Wang Z. Pd(II)-Catalyzed Annulation Reactions of Epoxides with Benzamides to Synthesize Isoquinolones. Org Lett 2021; 23:863-868. [PMID: 33464099 DOI: 10.1021/acs.orglett.0c04097] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Epoxides as alkylating reagents are unprecedentedly applied in Pd(II)-catalyzed C-H alkylation and oxidative annulation of substituted benzamides to synthesize isoquinolones rather than isochromans, which is accomplished through alerting the previously reported reaction mechanism by the addition of oxidant and TEA. Under these conditions, various isoquinolones have been prepared with yields up to 92%. In addition, this methodology has been successfully employed in the total syntheses of rupreschstyril, siamine, and cassiarin A in an expedient fashion.
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Affiliation(s)
- Huihong Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, China
| | - Fei Cao
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, China
| | - Weiwei Gao
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, China
| | - Xiaodong Wang
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, China
| | - Yuhang Yang
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, China
| | - Tao Shi
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, China
| | - Zhen Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, China.,School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, China
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6
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Yang Y, Xu C, Teng F, Li J. Dearomatization‐Enabled Visible‐Light‐Induced 1,2‐Alkylsulfonylation of Alkenes Using Sodium Sulfinates and Pyridinium Salts. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000457] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yuan Yang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education)Hunan Normal University Changsha 410081 People's Republic of China
| | - Chong‐Hui Xu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
- State Key Laboratory of Chemo/Biosensing and ChemometricsHunan University Changsha 410082 People's Republic of China
| | - Fan Teng
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
| | - Jin‐Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
- State Key Laboratory of Chemo/Biosensing and ChemometricsHunan University Changsha 410082 People's Republic of China
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education)Hunan Normal University Changsha 410081 People's Republic of China
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7
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Liu X, Wang Y, Song D, Wang Y, Cao H. Electrochemical regioselective selenylation/oxidation of N-alkylisoquinolinium salts via double C(sp2)–H bond functionalization. Chem Commun (Camb) 2020; 56:15325-15328. [DOI: 10.1039/d0cc06778d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An efficient and environmentally friendly electrochemical regioselective selenylation/oxidation of N-alkylisoquinolinium salts via double C(sp2)–H bond functionalization has been developed.
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Affiliation(s)
- Xiang Liu
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center
- Guangdong Pharmaceutical University
- Zhongshan 528458
- China
| | - Yajun Wang
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center
- Guangdong Pharmaceutical University
- Zhongshan 528458
- China
| | - Dan Song
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center
- Guangdong Pharmaceutical University
- Zhongshan 528458
- China
| | - Yuhan Wang
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center
- Guangdong Pharmaceutical University
- Zhongshan 528458
- China
| | - Hua Cao
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center
- Guangdong Pharmaceutical University
- Zhongshan 528458
- China
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8
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Fu SS, Ren XY, Guo S, Lan G, Zhang ZM, Lu TB, Lin W. Synergistic Effect over Sub-nm Pt Nanocluster@MOFs Significantly Boosts Photo-oxidation of N-alkyl(iso)quinolinium Salts. iScience 2019; 23:100793. [PMID: 31958757 PMCID: PMC6992937 DOI: 10.1016/j.isci.2019.100793] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/10/2019] [Accepted: 12/18/2019] [Indexed: 11/17/2022] Open
Abstract
Quinolones and isoquinolones are of interest to pharmaceutical industry owing to their potent biological activities. Herein, we first encapsulated sub-nm Pt nanoclusters into Zr-porphyrin frameworks to afford an efficient photocatalyst Pt0.9@PCN-221. This catalyst can dramatically promote electron-hole separation and 1O2 generation to achieve synergistic effect first in the metal-organic framework (MOF) system, leading to the highest activity in photosynthesis of (iso)quinolones in >90.0% yields without any electronic sacrificial agents. Impressively, Pt0.9@PCN-221 was reused 10 times without loss of activity and can catalyze gram-scale synthesis of 1-methyl-5-nitroisoquinolinone at an activity of 175.8 g·gcat−1, 22 times higher than that of PCN-221. Systematic investigations reveal the contribution of synergistic effect of photogenerated electron, photogenerated hole, and 1O2 generation for efficient photo-oxidation, thus highlighting a new strategy to integrate multiple functional components into MOFs to synergistically catalyze complex photoreactions for exploring biologically active heterocyclic molecules. A state-of-the-art photocatalyst for preparation of bioactive (iso)quinolones Synergistic catalysis of photogenerated e−/h+ and 1O2 Sub-nm Pt0.9@PCN-221 with a high efficiency of e−-h+ separation and 1O2 generation
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Affiliation(s)
- Shan-Shan Fu
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Xiu-Ying Ren
- College of Chemistry, Northeast Normal University, Changchun 130024, P.R. China
| | - Song Guo
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China.
| | - Guangxu Lan
- Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA
| | - Zhi-Ming Zhang
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China; College of Chemistry, Northeast Normal University, Changchun 130024, P.R. China.
| | - Tong-Bu Lu
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Wenbin Lin
- Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA
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9
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Luo WK, Xu CL, Yang L. I2/TBHP mediated multiple C H bonds functionalization of azaarenes with methylarenes to synthesize iodoisoquinolinones via iodination/N-benzylation/amidation sequence. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151328] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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10
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Shantharjun B, Rajeswari R, Vani D, Unnava R, Sridhar B, Reddy KR. Metal‐Free, One‐Pot Oxidative Triple Functionalization of Azaarenes with Methyl Arenes Mediated by Molecular Iodine/TBHP: Synthesis of N‐Benzylated Iodo(iso)quinolinones. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Bangarigalla Shantharjun
- Catalysis and Fine Chemicals DivisionCSIR- Indian Institute of Chemical Technology Tarnaka Hyderabad- 500007 India
- Academy of Scientific and Innovative Research New Delhi- 110025 India
| | - Radhakrishnan Rajeswari
- Catalysis and Fine Chemicals DivisionCSIR- Indian Institute of Chemical Technology Tarnaka Hyderabad- 500007 India
| | - Damera Vani
- Catalysis and Fine Chemicals DivisionCSIR- Indian Institute of Chemical Technology Tarnaka Hyderabad- 500007 India
- Academy of Scientific and Innovative Research New Delhi- 110025 India
| | - Ramanjaneyulu Unnava
- Catalysis and Fine Chemicals DivisionCSIR- Indian Institute of Chemical Technology Tarnaka Hyderabad- 500007 India
| | - Balasubramanian Sridhar
- X-ray Crystallography DivisionCSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad- 500007 India
| | - Kallu Rajender Reddy
- Catalysis and Fine Chemicals DivisionCSIR- Indian Institute of Chemical Technology Tarnaka Hyderabad- 500007 India
- Academy of Scientific and Innovative Research New Delhi- 110025 India
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11
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Xie H, Xing Q, Shan Z, Xiao F, Deng G. Nickel‐Catalyzed Annulation of
o
‐Haloarylamidines with Aryl Acetylenes: Synthesis of Isoquinolone and 1‐Aminoisoquinoline Derivatives. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801635] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Hao Xie
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of ChemistryXiangtan University Xiangtan 411105 People's Republic of China
| | - Qiaoyan Xing
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of ChemistryXiangtan University Xiangtan 411105 People's Republic of China
| | - Zhifei Shan
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of ChemistryXiangtan University Xiangtan 411105 People's Republic of China
| | - Fuhong Xiao
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of ChemistryXiangtan University Xiangtan 411105 People's Republic of China
| | - Guo‐Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of ChemistryXiangtan University Xiangtan 411105 People's Republic of China
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12
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Fang Z, Wang Y, Wang Y. Synthesis of 4-Iodoisoquinolin-1(2 H)-ones by a Dirhodium(II)-Catalyzed 1,4-Bisfunctionalization of Isoquinolinium Iodide Salts. Org Lett 2019; 21:434-438. [PMID: 30615466 DOI: 10.1021/acs.orglett.8b03614] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient Rh2(II,II)-catalyzed reaction has been developed under mild conditions. This synthetic method proceeds through iodination/oxidation of readily available isoquinolinium iodide salts under aerobic conditions with good to excellent yields. 4-Iodoisoquinolin-1(2 H)-ones are important building blocks for biologically and medicinally important compounds. The developed methodology was applied to the gram-scale synthesis of a key intermediate in the synthesis of the CRTH2 antagonist CRA-680.
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Affiliation(s)
- Zaixiang Fang
- College of Chemistry , Sichuan University , Chengdu 610064 , P.R. China
| | - Yi Wang
- College of Chemistry , Sichuan University , Chengdu 610064 , P.R. China
| | - Yuanhua Wang
- College of Chemistry , Sichuan University , Chengdu 610064 , P.R. China
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13
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Faisca Phillips AM, Pombeiro AJL. Recent Developments in Transition Metal-Catalyzed Cross-Dehydrogenative Coupling Reactions of Ethers and Thioethers. ChemCatChem 2018. [DOI: 10.1002/cctc.201800582] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ana Maria Faisca Phillips
- Centro de Química Estrutural; Complexo I; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural; Complexo I; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
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14
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Sun Q, Zhang YY, Sun J, Han Y, Jia X, Yan CG. Construction of C(sp2)–X (X = Br, Cl) Bonds through a Copper-Catalyzed Atom-Transfer Radical Process: Application for the 1,4-Difunctionalization of Isoquinolinium Salts. Org Lett 2018; 20:987-990. [DOI: 10.1021/acs.orglett.7b03751] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Qiu Sun
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Yuan-Yuan Zhang
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Jing Sun
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Ying Han
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Xiaodong Jia
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Chao-Guo Yan
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou, 225002, China
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15
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Xu Y, Zheng G, Yang X, Li X. Rhodium(iii)-catalyzed chemodivergent annulations between N-methoxybenzamides and sulfoxonium ylides via C–H activation. Chem Commun (Camb) 2018; 54:670-673. [DOI: 10.1039/c7cc07753j] [Citation(s) in RCA: 154] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Rhodium-catalyzed and acid-controlled chemodivergent annulations between N-methoxybenzamides and sulfoxonium ylides have been realized.
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Affiliation(s)
- Youwei Xu
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Guangfan Zheng
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Xifa Yang
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Xingwei Li
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
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16
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Jin Y, Ou L, Yang H, Fu H. Visible-Light-Mediated Aerobic Oxidation of N-Alkylpyridinium Salts under Organic Photocatalysis. J Am Chem Soc 2017; 139:14237-14243. [DOI: 10.1021/jacs.7b07883] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Yunhe Jin
- Key Laboratory of Bioorganic Phosphorus
Chemistry and Chemical Biology (Ministry of Education), Department
of Chemistry, Tsinghua University, Beijing 100084, China
| | - Lunyu Ou
- Key Laboratory of Bioorganic Phosphorus
Chemistry and Chemical Biology (Ministry of Education), Department
of Chemistry, Tsinghua University, Beijing 100084, China
| | - Haijun Yang
- Key Laboratory of Bioorganic Phosphorus
Chemistry and Chemical Biology (Ministry of Education), Department
of Chemistry, Tsinghua University, Beijing 100084, China
| | - Hua Fu
- Key Laboratory of Bioorganic Phosphorus
Chemistry and Chemical Biology (Ministry of Education), Department
of Chemistry, Tsinghua University, Beijing 100084, China
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17
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Lakshman MK, Vuram PK. Cross-dehydrogenative coupling and oxidative-amination reactions of ethers and alcohols with aromatics and heteroaromatics. Chem Sci 2017; 8:5845-5888. [PMID: 28970941 PMCID: PMC5618789 DOI: 10.1039/c7sc01045a] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 05/22/2017] [Indexed: 11/21/2022] Open
Abstract
Cross-dehydrogenative coupling (CDC) is a process in which, typically, a C-C bond is formed at the expense of two C-H bonds, either catalyzed by metals or other organic compounds, or via uncatalyzed processes. In this perspective, we present various modes of C-H bond-activation at sp3 centers adjacent to ether oxygen atoms, followed by C-C bond formation with aromatic systems as well as with heteroaromatic systems. C-N bond-formation with NH-containing heteroaromatics, leading to hemiaminal ethers, is also an event that can occur analogously to C-C bond formation, but at the expense of C-H and N-H bonds. A large variety of hemiaminal ether-forming reactions have recently appeared in the literature and this perspective also includes this complementary chemistry. In addition, the participation of C-H bonds in alcohols in such processes is also described. Facile access to a wide range of compounds can be attained through these processes, rendering such reactions useful for synthetic applications via Csp3 bond activations.
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Affiliation(s)
- Mahesh K Lakshman
- Department of Chemistry , The City College of New York , 160 Convent Avenue , New York 10031 , USA .
- The Ph.D. Program in Chemistry , The Graduate Center of The City University of New York , New York 10016 , USA
| | - Prasanna K Vuram
- Department of Chemistry , The City College of New York , 160 Convent Avenue , New York 10031 , USA .
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18
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Qi L, Hu K, Yu S, Zhu J, Cheng T, Wang X, Chen J, Wu H. Tandem Addition/Cyclization for Access to Isoquinolines and Isoquinolones via Catalytic Carbopalladation of Nitriles. Org Lett 2016; 19:218-221. [DOI: 10.1021/acs.orglett.6b03499] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Linjun Qi
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Kun Hu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Shuling Yu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Jianghe Zhu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Tianxing Cheng
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Xiaodong Wang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Jiuxi Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
| | - Huayue Wu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P. R. China
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