1
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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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2
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Dess-Martin Periodinane-Mediated Oxidative Coupling Reaction of Isoquinoline with Benzyl Bromide. Molecules 2023; 28:molecules28030923. [PMID: 36770590 PMCID: PMC9919522 DOI: 10.3390/molecules28030923] [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: 12/21/2022] [Revised: 01/13/2023] [Accepted: 01/15/2023] [Indexed: 01/18/2023] Open
Abstract
Dess-Martin periodinane (DMP) is a broadly applicable oxidant in chemical synthesis. In this work, an efficient and convenient synthesis of N-substituted isoquinolinone derivatives mediated by DMP was achieved through the oxidative coupling reaction of functionalized isoquinoline with readily available benzyl bromide, which is a metal-free, mild, and practical method for synthesizing isoquinoline-1,3-dione or isoquinoline-1,3,4-trione derivatives in excellent yields. The H2O18-labeling experiment was performed to gain insight into the possible mechanism for this reaction.
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3
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Slathia N, Gupta A, Kapoor K. I2/ TBHP Reagent System: A Modern Paradigm for Organic Transformations. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | - Kamal Kapoor
- University of Jammu Department of Chemistry Department of Chemistry 180006 Jammu INDIA
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4
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Amador‐Sánchez YA, López‐Mendoza P, Mijangos MV, Miranda LD. Synthesis of Tetrahydro‐4
H
‐pyrido[1,2‐
b
]isoquinolin‐4‐ones from Ugi 4‐CR‐Derived Dihydroisoquinoline‐Xanthates**. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yoarhy A. Amador‐Sánchez
- Instituto de Química Universidad Nacional Autónoma de México Circuito Exterior, Ciudad Universitaria, Coyoacán Ciudad de México 04510 México
| | - Pedro López‐Mendoza
- Instituto de Química Universidad Nacional Autónoma de México Circuito Exterior, Ciudad Universitaria, Coyoacán Ciudad de México 04510 México
| | - Marco V. Mijangos
- Instituto de Química Universidad Nacional Autónoma de México Circuito Exterior, Ciudad Universitaria, Coyoacán Ciudad de México 04510 México
| | - Luis D. Miranda
- Instituto de Química Universidad Nacional Autónoma de México Circuito Exterior, Ciudad Universitaria, Coyoacán Ciudad de México 04510 México
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5
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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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6
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Lin XL, Yu Y, Zhang L, Leng LJ, Xiao DR, Cai T, Luo QL. Switchable synthesis of 1,4-bridged dihydroisoquinoline-3-ones and isoquinoline-1,3,4-triones through radical oxidation of isoquinolinium salts with phenyliodine( iii) diacetate. Org Chem Front 2022. [DOI: 10.1039/d2qo00887d] [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 switchable synthesis of 1,4-bridged dihydroisoquinoline-3-ones and isoquinoline-1,3,4-triones is developed via radical oxidation of isoquinolinium salts with PhI(OAc)2.
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Affiliation(s)
- Xiao-Long Lin
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Yan Yu
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Liang Zhang
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Li-Jing Leng
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Dong-Rong Xiao
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Tian Cai
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Southwest University, Chongqing 400715, China
| | - Qun-Li Luo
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
- Key Laboratory of Applied Chemistry of Chongqing Municipality, Southwest University, Chongqing 400715, China
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7
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Li Y, Feng X, Jia X, Jin H, Chen F, Zhao Y, Zhang J, Wang J, Guo B, Tang L, Yang Y. Regiodivergent Functionalization of Isoquinoline‐1,3(2
H
,4
H
)‐dione Derivatives via Aerobic Umpolung. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ying‐Xian Li
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Xiao‐Bing Feng
- Xiao-Bing Feng Department of orthopaedics People's Hospital of Luzhou 646000 Luzhou P. R. China
| | - Xue‐Min Jia
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Huang Jin
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Fei Chen
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Yong‐Long Zhao
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Ji‐Quan Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Jian‐Ta Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Bing Guo
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases Guizhou Medical University 550004 Guiyang P. R. China
| | - Lei Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Yuan‐Yong Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
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8
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Tang J, Chen X, Zhao CQ, Li WJ, Li S, Zheng XL, Yuan ML, Fu HY, Li RX, Chen H. Iodination/Amidation of the N-Alkyl (Iso)quinolinium Salts. J Org Chem 2021; 86:716-730. [PMID: 33267579 DOI: 10.1021/acs.joc.0c02321] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The NaIO4-mediated sequential iodination/amidation reaction of N-alkyl quinolinium iodide salts has been first developed. This cascade process provides an efficient way to rapidly synthesize 3-iodo-N-alkyl quinolinones with high regioselectivity and good functional group tolerance. This protocol was also amenable to the isoquinolinium salts, thus providing a complementary method for preparing the 4-iodo-N-alkyl isoquinolinones.
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Affiliation(s)
- Juan Tang
- Key lab of Green Chemistry and Technology, Ministry of Education; College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Xue Chen
- Key lab of Green Chemistry and Technology, Ministry of Education; College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Chao-Qun Zhao
- Key lab of Green Chemistry and Technology, Ministry of Education; College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Wen-Jing Li
- Key lab of Green Chemistry and Technology, Ministry of Education; College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Shun Li
- Key lab of Green Chemistry and Technology, Ministry of Education; College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Xue-Li Zheng
- Key lab of Green Chemistry and Technology, Ministry of Education; College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Mao-Lin Yuan
- Key lab of Green Chemistry and Technology, Ministry of Education; College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Hai-Yan Fu
- Key lab of Green Chemistry and Technology, Ministry of Education; College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Rui-Xiang Li
- Key lab of Green Chemistry and Technology, Ministry of Education; College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
| | - Hua Chen
- Key lab of Green Chemistry and Technology, Ministry of Education; College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China
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9
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Zhuge J, Jiang Z, Jiang W, Histand G, Lin D. Iodine-catalyzed oxidative functionalization of purines with (thio)ethers or methylarenes for the synthesis of purin-8-one analogues. Org Biomol Chem 2021; 19:5121-5126. [PMID: 34018534 DOI: 10.1039/d1ob00118c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient oxidative functionalization of purine-like substrates with (thio)ethers or methylarenes under mild conditions is described. Using I2 as the catalyst, and TBHP as the oxidant, this protocol provides a valuable synthetic tool for the assembly of a wide range of 9-alkyl(benzyl)purin-8-one derivatives with high atom- and step-economy and exceptional functional group tolerance.
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Affiliation(s)
- Juanping Zhuge
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Ziyang Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Wei Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Gary Histand
- International School of Advanced Materials, South China University of Technology, Guangzhou 510640, China
| | - Dongen Lin
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.
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10
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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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11
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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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12
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Gui QW, Teng F, Li ZC, Jin XF, Zhang M, Dai JN, Lin YW, Cao Z, He WM. Molecular iodine-catalyzed multicomponent synthesis of α-cyanopyrrolines with ambient air as the oxidant under neat conditions. Org Chem Front 2020. [DOI: 10.1039/d0qo01113d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An eco-friendly and practical method for synthesizing α-cyanopyrrolines via iodine-catalyzed multicomponent tandem reaction of alkenes, TMSCN and N,N-disubstituted formamides with ambient air as the sole oxidant was developed.
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Affiliation(s)
- Qing-Wen Gui
- College of Chemistry and Materials Science
- Hunan Agricultural University
- Changsha 410128
- China
| | - Fan Teng
- College of Chemistry and Materials Science
- Hunan Agricultural University
- Changsha 410128
- China
| | - Zhou-Chao Li
- College of Chemistry and Materials Science
- Hunan Agricultural University
- Changsha 410128
- China
| | - Xue-Feng Jin
- College of Chemistry and Materials Science
- Hunan Agricultural University
- Changsha 410128
- China
| | - Mei Zhang
- College of Chemistry and Materials Science
- Hunan Agricultural University
- Changsha 410128
- China
| | - Jia-Ni Dai
- College of Chemistry and Materials Science
- Hunan Agricultural University
- Changsha 410128
- China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering
- University of South China
- Hengyang
- China
| | - Zhong Cao
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation
- Changsha University of Science and Technology
- Changsha
- China
| | - Wei-Min He
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation
- Changsha University of Science and Technology
- Changsha
- China
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13
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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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14
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Kennedy SH, Schaeff MN, Klumpp DA. Superelectrophiles in Synthesis: Preparation of Aromatic Imides. J Org Chem 2019; 84:14133-14140. [PMID: 31571485 DOI: 10.1021/acs.joc.9b01437] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Aromatic carboxylic acids are found to undergo reactions with isocyanates, wherein triflic acid promotes the formation of aromatic imide products in fair to good yields. It is proposed that the carboxylic acid group directs the isocyanate electrophile to the ortho-position. This is thought to occur by the formation of a temporary carbamic acid anhydride group, which cleaves upon ortho-functionalization. A series of imide products are synthesized, and the synthesis of a potential selective inhibitor of tyrosyl DNA phosphodiesterase II is performed.
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Affiliation(s)
- Sean H Kennedy
- Department of Chemistry and Biochemistry , Northern Illinois University , DeKalb , Illinois 60115 , United States
| | - Mark N Schaeff
- Department of Chemistry and Biochemistry , Northern Illinois University , DeKalb , Illinois 60115 , United States
| | - Douglas A Klumpp
- Department of Chemistry and Biochemistry , Northern Illinois University , DeKalb , Illinois 60115 , United States
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15
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Metal-Free Air Oxidation in a Convenient Cascade Approach for the Access to Isoquinoline-1,3,4( 2H)-triones. Molecules 2019; 24:molecules24112177. [PMID: 31185639 PMCID: PMC6600517 DOI: 10.3390/molecules24112177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/06/2019] [Accepted: 06/07/2019] [Indexed: 11/24/2022] Open
Abstract
Herein we describe a very useful application of the readily available trifunctional aromatic ketone methyl-2-(2-bromoacetyl)benzoate in reactions with primary amines. An unexpected in situ air oxidation that follows a cascade process allowed the access to a series of isoquinoline-1,3,4(2H)-triones, a class of heterocyclic compounds of great interest containing an oxygen-rich heterocyclic scaffold. A modification of the original protocol, utilizing a Staudinger reaction in the presence of trimethylphosphine, was necessary for the synthesis of Caspase inhibitor trione with free NH group.
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16
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Tasker NR, Rastelli EJ, Blanco IK, Burnett JC, Sharlow ER, Lazo JS, Wipf P. In-flow photooxygenation of aminothienopyridinones generates iminopyridinedione PTP4A3 phosphatase inhibitors. Org Biomol Chem 2019; 17:2448-2466. [PMID: 30746541 DOI: 10.1039/c9ob00025a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A continuous flow photooxygenation of 7-aminothieno[3,2-c]pyridin-4(5H)-ones to produce 7-iminothieno[3,2-c]pyridine-4,6(5H,7H)-diones has been developed, utilizing ambient air as the sole reactant. N-H Imines are formed as the major products, and excellent functional group tolerance and conversion on gram-scale without the need for chromatographic purification allow for facile late-stage diversification of the aminothienopyridinone scaffold. Several analogs exhibit potent in vitro inhibition of the cancer-associated protein tyrosine phosphatase PTP4A3, and the SAR supports an exploratory docking model.
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Affiliation(s)
- Nikhil R Tasker
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
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17
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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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18
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Zhu Y, Shao LD, Deng ZT, Bao Y, Shi X, Zhao QS. PIDA/I 2-Mediated α- and β-C(sp 3)-H Bond Dual Functionalization of Tertiary Amines. J Org Chem 2018; 83:10166-10174. [PMID: 30032617 DOI: 10.1021/acs.joc.8b01424] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The α,β-C(sp3)-H bond dual functionalization of tertiary amines is still a challenging task for both organic and medicinal chemists. Herein a direct, mild, metal-free, and site-specific method mediated by PIDA/I2 was developed for α,β-C(sp3)-H bond dual functionalization of tertiary amines, and this method can provide facile access to α-keto lactams or rarely studied α,α-diiodo lactams. Moreover, this method was used for the effective syntheses of three natural products [obscurumine C (13), obscurumine O (17), and strychnocarpine (18)] and direct preparation of mimics of the in vivo metabolites of two FDA-approved drugs (imatinib and donepezil) in 36-60% overall yield. The method represents a promising protocol for the late-stage α,β-C(sp3)-H bond oxidative dual functionalization of tertiary amine-containing drugs and complex natural products.
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Affiliation(s)
- Yu Zhu
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China.,University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Li-Dong Shao
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
| | - Zhen-Tao Deng
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China.,University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Ying Bao
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China.,University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Xin Shi
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China.,University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Qin-Shi Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , People's Republic of China
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Rong GQ, Zhao JQ, Zhang XM, Xu XY, Yuan WC, Zhou MQ. One-pot access to indolylchromeno[2,3-b]indoles via iodine-mediated Friedel-Crafts alkylation/oxidative coupling reaction of indoles and salicylaldehydes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Liu X, Zhou Y, Yang Z, Li Q, Zhao L, Liu P. Iodine-Catalyzed C–H Amidation and Imination at the 2α-Position of 2,3-Disubstituted Indoles with Chloramine Salts. J Org Chem 2018; 83:4665-4673. [DOI: 10.1021/acs.joc.8b00286] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Xiaozu Liu
- Pharmacy School, Zunyi Medical University, Zunyi 563003, P. R. China
| | - Yuxiang Zhou
- Pharmacy School, Zunyi Medical University, Zunyi 563003, P. R. China
| | - Zhongqin Yang
- Pharmacy School, Zunyi Medical University, Zunyi 563003, P. R. China
| | - Qin Li
- Pharmacy School, Zunyi Medical University, Zunyi 563003, P. R. China
| | - Liang Zhao
- Pharmacy School, Zunyi Medical University, Zunyi 563003, P. R. China
| | - Peijun Liu
- Pharmacy School, Zunyi Medical University, Zunyi 563003, P. R. China
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