1
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Doobary S, Lacey AJD, Sweeting SG, Coppock SB, Caldora HP, Poole DL, Lennox AJJ. Diastereodivergent nucleophile-nucleophile alkene chlorofluorination. Nat Chem 2024:10.1038/s41557-024-01561-6. [PMID: 38951616 DOI: 10.1038/s41557-024-01561-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 05/23/2024] [Indexed: 07/03/2024]
Abstract
The selective hetero-dihalogenation of alkenes provides useful building blocks for a broad range of chemical applications. Unlike homo-dihalogenation, selective hetero-dihalogenation reactions, especially fluorohalogenation, are underdeveloped. Current approaches combine an electrophilic halogen source with a nucleophilic halogen source, which necessarily leads to anti-addition, and regioselectivity has only been achieved using highly activated alkenes. Here we describe an alternative, nucleophile-nucleophile approach that adds chloride and fluoride ions over unactivated alkenes in a highly regio-, chemo- and diastereoselective manner. A curious switch in the reaction mechanism was discovered, which triggers a complete reversal of the diastereoselectivity to promote either anti- or syn-addition. The conditions are demonstrated on an array of pharmaceutically relevant compounds, and detailed mechanistic studies reveal the selectivity and the switch between the syn- and anti-diastereomers are based on different active iodanes and which of the two halides adds first.
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Affiliation(s)
| | | | | | | | | | - Darren L Poole
- Discovery High-Throughput Chemistry, Medicinal Chemistry, GSK Medicines Research Centre, Stevenage, UK
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2
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Tang Y, Pan W, Yang Y. Silver-Catalyzed Chlorocyclization for the Synthesis of 3-Chloro-2 H-chromenes. J Org Chem 2023. [PMID: 37410887 DOI: 10.1021/acs.joc.2c02864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
A silver-catalyzed chlorocyclization reaction of aryl 3-aryl-2-propyn-1-yl ethers in the presence of NCS under darkness was accomplished, which provides a straightforward and efficient access to 3-chloro-2H-chromenes.
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Affiliation(s)
- Yunhao Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 3491 Gaohai Road, Guiyang 550014, P. R. China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, 3491 Baijin Road, Guiyang 550014, P. R. China
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, P. R. China
| | - Weidong Pan
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 3491 Gaohai Road, Guiyang 550014, P. R. China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, 3491 Baijin Road, Guiyang 550014, P. R. China
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, P. R. China
| | - Yuzhu Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 3491 Gaohai Road, Guiyang 550014, P. R. China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, 3491 Baijin Road, Guiyang 550014, P. R. China
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3
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Efficient Synthesis of 1 H-Benzo[4,5]imidazo[1,2- c][1,3]oxazin-1-one Derivatives Using Ag 2CO 3/TFA-Catalyzed 6- endo-dig Cyclization: Reaction Scope and Mechanistic Study. Molecules 2023; 28:molecules28052403. [PMID: 36903655 PMCID: PMC10005794 DOI: 10.3390/molecules28052403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 03/09/2023] Open
Abstract
A small library of 1H-benzo[4,5]imidazo[1,2-c][1,3]oxazin-1-one derivatives was prepared in good to excellent yields, involving a Ag2CO3/TFA-catalyzed intramolecular oxacyclization of N-Boc-2-alkynylbenzimidazole substrates. In all experiments, the 6-endo-dig cyclization was exclusively achieved since the possible 5-exo-dig heterocycle was not observed, indicating the high regioselectivity of this process. The scope and limitations of the silver catalyzed 6-endo-dig cyclization of N-Boc-2-alkynylbenzimidazoles as substrates, bearing various substituents, were investigated. While ZnCl2 has shown limits for alkynes with an aromatic substituent, Ag2CO3/TFA demonstrated its effectiveness and compatibility regardless of the nature of the starting alkyne (aliphatic, aromatic or heteroaromatic), providing a practical regioselective access to structurally diverse 1H-benzo[4,5]imidazo[1,2-c][1,3]oxazin-1-ones in good yields. Moreover, the rationalization of oxacyclization selectivity in favor of 6-endo-dig over 5-exo-dig was explained by a complementary computational study.
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4
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Chutia K, Sarmah M, Gogoi P. Substituted Isocoumarins: An Assemble of Synthetic Strategies Towards 3-Substituted and 3,4-Disubstituted Isocoumarins. Chem Asian J 2023; 18:e202201240. [PMID: 36647281 DOI: 10.1002/asia.202201240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 01/18/2023]
Abstract
The versatility of isocoumarin frameworks offers the privilege to access many pharmacological targets. This unique heterocycle core present in many natural products and complex organic molecules contribute to medicinal chemistry as anti-cancer, anti-inflammatory and immunomodulatory agents. The attractive properties exhibited by its analogues urged the scientists to explore their synthetic analogues. In regard to the myriads of synthetic methodologies, we have compiled a review update covering all the articles that have been published towards the synthesis of 3-substituted and 3,4-disubstituted isocoumarins. Additionally, we have also highlighted a systematic survey of catalytic methods for their synthesis along with their scope towards diverse functionalizations and plausible mechanistic aspects.
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Affiliation(s)
- Kangkana Chutia
- Applied Organic Chemistry Group, Chemical Science and Technology Division CSIR-North East Institute of Science and Technology, NH 37, Pulibor, Jorhat, Assam, 785006, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, U.P., 201002, India
| | - Manashi Sarmah
- Applied Organic Chemistry Group, Chemical Science and Technology Division CSIR-North East Institute of Science and Technology, NH 37, Pulibor, Jorhat, Assam, 785006, India
| | - Pranjal Gogoi
- Applied Organic Chemistry Group, Chemical Science and Technology Division CSIR-North East Institute of Science and Technology, NH 37, Pulibor, Jorhat, Assam, 785006, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, U.P., 201002, India
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5
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Gao QC, Li YF, Xuan J, Hu XQ. Practical synthesis of isocoumarins via Rh(III)-catalyzed C-H activation/annulation cascade. Beilstein J Org Chem 2023; 19:100-106. [PMID: 36761471 PMCID: PMC9907013 DOI: 10.3762/bjoc.19.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 01/16/2023] [Indexed: 01/31/2023] Open
Abstract
Herein, we report an unprecedented Rh(III)-catalyzed C-H activation/annulation cascade of readily available enaminones with iodonium ylides towards the convenient synthesis of isocoumarins. This coupling system proceeds in useful chemical yields (up to 93%) via a cascade C-H activation, Rh-carbenoid migratory insertion and acid-promoted intramolecular annulation. The success of gram-scale reaction and diverse functionalization of isocoumarins demonstrated the synthetic utility of this protocol.
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Affiliation(s)
- Qian-Ci Gao
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, People’s Republic of China
| | - Yi-Fei Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, People’s Republic of China
| | - Jun Xuan
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui 230601, People’s Republic of China
| | - Xiao-Qiang Hu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, People’s Republic of China
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6
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Tao S, Huo A, Gao Y, Zhang X, Yang J, Du Y. PhICl2-Mediated Regioselective and Electrophilic Oxythio/Selenocyanation of o-(1-Alkynyl)benzoates: Access to Biologically Active S/SeCN-Containing Isocoumarins. Front Chem 2022; 10:859995. [PMID: 35665060 PMCID: PMC9158338 DOI: 10.3389/fchem.2022.859995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 02/28/2022] [Indexed: 12/11/2022] Open
Abstract
The application of PhICl2/NH4SCN and PhICl2/KSeCN reagent systems to the synthesis of the biologically active S/SeCN-containing isocoumarins via a process involving thio/selenocyanation, enabled by thio/selenocyanogen chloride generated in situ, followed with an intramolecular lactonization was realized. Gram-scale synthesis, further derivatization to access C4 thio/selenocyanated Xyridin A and anti-tumor activities of the obtained products highlight the potential use of this method.
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Affiliation(s)
- Shanqing Tao
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Aiwen Huo
- Hebei Key Laboratory of State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China
| | - Yan Gao
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Xiangyang Zhang
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Jingyue Yang
- Hebei Key Laboratory of State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China
- *Correspondence: Yunfei Du, ; Jingyue Yang,
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
- *Correspondence: Yunfei Du, ; Jingyue Yang,
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7
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Li X, Zhang B, Zhao B, Wang X, Xu L, Du Y. Synthesis of 3‐Halogenated Quinolin‐2‐Ones from
N
‐Arylpropynamides
via
Hypervalent Iodine(III)−Mediated Umpolung Process. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200131] [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)
- Xiaoxian Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 People's Republic of China
| | - Beibei Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 People's Republic of China
| | - Bingyue Zhao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 People's Republic of China
| | - Xiaofan Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 People's Republic of China
| | - Lingzhi Xu
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 People's Republic of China
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 People's Republic of China
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8
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Shao C, He Y, Yin H, Chen FX. Me3SiCl‐Catalyzed Electrophilic Thiocyanation/Cyclization of Alkynylbenzoates to Synthesize 4‐Thiocyanatoisocourmarins. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chukai Shao
- Beijing Institute of Technology School of Chemistry No. 8 Liangxiang East Road, Fangshan District, Beijing 102488 (P. R. China) 102488 Beijing CHINA
| | - Ying He
- Beijing Institute of Technology School of Chemistry CHINA
| | - Hongquan Yin
- Beijing Institute of Technology School of Chemistry CHINA
| | - Fu-Xue Chen
- Beijing Institute of Technology School of chemical Engineering No5 south zhongguancun street, Haidian 100081 Beijing CHINA
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9
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Venkata Durga Nageswar Y, Ramesh K, Rakhi K. IBX-Mediated Organic Transformations in Heterocyclic Chemistry-A Decade Update. Front Chem 2022; 10:841751. [PMID: 35295969 PMCID: PMC8919869 DOI: 10.3389/fchem.2022.841751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 01/11/2022] [Indexed: 11/22/2022] Open
Abstract
O-Iodoxybenzoic acid (IBX) is a very mild and efficient hypervalent iodine synthetic reagent useful to carry out several selective oxidations. The present review highlights research reports on IBX-assisted transformations in heterocyclic derivatives, particularly from 2010 onward.
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Affiliation(s)
| | - Katla Ramesh
- Organic Chemistry Laboratory, Foreign Visiting Professor, School of Chemistry and Food, Federal University of Rio Grande-FURG, Rio Grande, Brazil
| | - Katla Rakhi
- Organic Catalysis and Biocatalysis Laboratory-LACOB, Federal University of Grande Dourados-UFGD, Dourados, Brazil
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10
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El Qami A, Jismy B, Akssira M, Jacquemin J, Tikad A, Abarbri M. A Ag 2CO 3/TFA-catalyzed intramolecular annulation approach to imidazo[1,2- c][1,3]oxazin-5-one derivatives. Org Biomol Chem 2022; 20:1518-1531. [PMID: 35112683 DOI: 10.1039/d1ob02352g] [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 series of 2,7-disubstituted 3-methylimidazo[1,2-c][1,3]oxazin-5-ones were synthesized in good yields via Ag2CO3/TFA-mediated intramolecular annulation of N-Boc-2-alkynyl-4-bromo(alkynyl)-5-methylimidazoles. This methodology was carried out in the presence of a catalytic amount of silver carbonate and trifluoroacetic acid in dichloroethane at 60 °C. In all experiments, only the six-membered ring product was obtained since the possible five-membered compound was not observed, proving the high regioselectivity of this approach. A complementary computational study was performed in order to rationalize the mechanism of 6-endo-dig heterocycle formation. In addition, 2-bromo-3-methyl-7-phenylimidazo[1,2-c][1,3]oxazin-5-one was used as a building block to synthesize a small library of new 2-substituted imidazo[1,2-c][1,3]oxazin-5-one derivatives through the Suzuki, Sonogashira and Heck cross coupling reactions.
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Affiliation(s)
- Abdelkarim El Qami
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour l'Energie (PCM2E), EA 6299, Université de Tours, Faculté des Sciences et Techniques, Avenue Monge Faculté des Sciences, Parc de Grandmont, 37200 Tours, France. .,Laboratoire de Chimie Physique et de Chimie Bioorganique, URAC 22. Université Hassan II de Casablanca, Faculté des Sciences et Techniques de Mohammedia, B.P. 146, 28800 Mohammedia, Morocco
| | - Badr Jismy
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour l'Energie (PCM2E), EA 6299, Université de Tours, Faculté des Sciences et Techniques, Avenue Monge Faculté des Sciences, Parc de Grandmont, 37200 Tours, France.
| | - Mohamed Akssira
- Laboratoire de Chimie Physique et de Chimie Bioorganique, URAC 22. Université Hassan II de Casablanca, Faculté des Sciences et Techniques de Mohammedia, B.P. 146, 28800 Mohammedia, Morocco
| | - Johan Jacquemin
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour l'Energie (PCM2E), EA 6299, Université de Tours, Faculté des Sciences et Techniques, Avenue Monge Faculté des Sciences, Parc de Grandmont, 37200 Tours, France.
| | - Abdellatif Tikad
- Laboratoire de Chimie Moléculaire et Substances Naturelles. Université Moulay Ismail, Faculté des Sciences, B.P. 11201, Zitoune, Meknès, Morocco
| | - Mohamed Abarbri
- Laboratoire de Physico-Chimie des Matériaux et des Electrolytes pour l'Energie (PCM2E), EA 6299, Université de Tours, Faculté des Sciences et Techniques, Avenue Monge Faculté des Sciences, Parc de Grandmont, 37200 Tours, France.
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11
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Yang S, Liu XB, Feng SX, Li Y, Tu FH, Huang B, Huang LL, Huang ZS, Wang H, Li Q. Hypervalent iodine( iii)-mediated ring-expansive difluorination of alkynylcyclopropanes en route to the synthesis of difluorinated alkylidenecyclobutanes. Org Chem Front 2022. [DOI: 10.1039/d2qo00888b] [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
Reported herein is a hypervalent iodine(iii)-mediated ring-expansive difluorination of alkynylcyclopropanes featuring a Wagner–Meerwein-type rearrangement to access a variety of difluorinated alkylidenecyclobutanes.
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Affiliation(s)
- Shuang Yang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Xiao-Bin Liu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Si-Xin Feng
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Yin Li
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Fang-Hai Tu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Bin Huang
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, P. R. China
| | - Long-Ling Huang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Zhi-Shu Huang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Honggen Wang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Qingjiang Li
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P. R. China
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, P. R. China
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12
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Pramanik M, Mathuri A, Sau S, Das M, Mal P. Chlorinative Cyclization of Aryl Alkynoates Using NCS and 9-Mesityl-10-methylacridinium Perchlorate Photocatalyst. Org Lett 2021; 23:8088-8092. [PMID: 34558906 DOI: 10.1021/acs.orglett.1c03100] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In a chlorinative cyclization, Mes-Acr-MeClO4 acted as a visible-light photocatalyst to obtain 3-chlorocoumarins from aryl alkynoates and N-chlorosuccinimide (NCS). The radical initiated reaction proceeded in a cascading manner via Cl- addition to alkynoates. Next, 5-exo-trig spirocyclization and subsequent 1,2-ester migration led to the formation of C-C and C-Cl bonds.
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Affiliation(s)
- Milan Pramanik
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| | - Ashis Mathuri
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| | - Sudip Sau
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| | - Monojit Das
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| | - Prasenjit Mal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
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13
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Wu H, Wang YC, Shatskiy A, Li QY, Liu JQ, Kärkäs MD, Wang XS. Modular synthesis of 3-substituted isocoumarins via silver-catalyzed aerobic oxidation/ 6-endo heterocyclization of ortho-alkynylbenzaldehydes. Org Biomol Chem 2021; 19:6657-6664. [PMID: 34271583 DOI: 10.1039/d1ob01065d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A method involving silver-catalyzed aerobic oxidation/6-endo heterocyclization of ortho-alkynylbenzaldehydes to yield 3-substituted isocoumarins is described. The developed protocol allows convenient access to a range of synthetically useful 3-substituted isocoumarins and related fused heterocyclolactones in good to high yields, using silver tetrafluoroborate as the catalyst, and atmospheric oxygen as the terminal oxidant and the source of endocyclic oxygen. Mechanistic studies suggest the involvement of a free-radical pathway.
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Affiliation(s)
- Hao Wu
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
| | - Yi-Chun Wang
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
| | - Andrey Shatskiy
- Department of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
| | - Qiu-Yan Li
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
| | - Jian-Quan Liu
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China. and Department of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
| | - Markus D Kärkäs
- Department of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
| | - Xiang-Shan Wang
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
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14
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Zhang LW, Deng XJ, Zhang DX, Tian QQ, He W. Aminolactonization of Unactivated Alkenes Catalyzed by Aryl Iodine. J Org Chem 2021; 86:5152-5165. [PMID: 33760610 DOI: 10.1021/acs.joc.1c00074] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A one-step protocol of the aryl iodine-catalyzed aminolactonization of unactivated alkenes under oxidation conditions was first reported to efficiently construct diverse amino lactones in a short time using HNTs2 as the compatible nitrogen source. In addition, we investigated the influence of the reaction rate based on the structure of the iodoarene precatalyst, which revealed the selective adjustment effect on aminolactonization and oxylactonization. Finally, preliminary experiments verified the feasibility of asymmetric aminolactonization catalyzed by a chiral iodoarene precatalyst.
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Affiliation(s)
- Lu-Wen Zhang
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
| | - Xiao-Jun Deng
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
| | - Dong-Xu Zhang
- Department of Medicinal Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
| | - Qin-Qin Tian
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
| | - Wei He
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
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15
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Zhang B, Li X, Guo B, Du Y. Hypervalent iodine reagent-mediated reactions involving rearrangement processes. Chem Commun (Camb) 2020; 56:14119-14136. [PMID: 33140751 DOI: 10.1039/d0cc05354f] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hypervalent iodine reagents have been extensively employed in various types of oxidative organic reactions including oxidative coupling/cyclization, bifunctionalization of olefins and cyclopropane, C-H functionalization, and oxidative rearrangement reactions. In this review, the developments of the exclusive hypervalent iodine-mediated reactions involving oxidative rearrangement processes, including [1,2]-migration, Hofmann rearrangement, Beckmann rearrangement, ring contraction, ring expansion, [3,3]-sigmatropic/iodonium-Claisen rearrangement and some miscellaneous rearrangements, have been summarized.
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Affiliation(s)
- Beibei Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
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16
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Zhou J, Song X, Zhao C, Wang L, Zhang X, Chen Y, Zhang L. DFT Study on Oxidative Cyclization of
o‐
Alkynylbenzoates Mediated by Hypervalent Iodine Reagent: Mechanism and Substituent Effect. ChemistrySelect 2020. [DOI: 10.1002/slct.202000106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jianguo Zhou
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and RecyclingSchool of ScienceTianjin Chengjian University Tianjin 300384 P. R. China
| | - Xin‐Xin Song
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and RecyclingSchool of ScienceTianjin Chengjian University Tianjin 300384 P. R. China
| | - Cheng‐Bin Zhao
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and RecyclingSchool of ScienceTianjin Chengjian University Tianjin 300384 P. R. China
| | - Ling‐Ling Wang
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and RecyclingSchool of ScienceTianjin Chengjian University Tianjin 300384 P. R. China
| | - Xiao‐Qian Zhang
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and RecyclingSchool of ScienceTianjin Chengjian University Tianjin 300384 P. R. China
| | - Yu Chen
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and RecyclingSchool of ScienceTianjin Chengjian University Tianjin 300384 P. R. China
- Department of ChemistrySchool of ScienceTianjin University Tianjin 300354 P. R. China
| | - Lei Zhang
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and RecyclingSchool of ScienceTianjin Chengjian University Tianjin 300384 P. R. China
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Norseeda K, Chaisan N, Thongsornkleeb C, Tummatorn J, Ruchirawat S. Metal-Free Synthesis of 4-Chloroisocoumarins by TMSCl-Catalyzed NCS-Induced Chlorinative Annulation of 2-Alkynylaryloate Esters. J Org Chem 2019; 84:16222-16236. [DOI: 10.1021/acs.joc.9b02793] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Krissada Norseeda
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Nattawadee Chaisan
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Charnsak Thongsornkleeb
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Jumreang Tummatorn
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Somsak Ruchirawat
- Program on Chemical Biology, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
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18
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Huang Y, Lyu X, Song H, Wang Q. Sulfoxonium Ylides as Carbene Precursors: Rhodium(III)‐Catalyzed Sequential C−H Functionalization, Selective Enol Oxygen‐Atom Nucleophilic Addition, and Hydrolysis. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900861] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yuanqiong Huang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of ChemistryNankai University Tianjin 300071 People's Republic of China
| | - Xueli Lyu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of ChemistryNankai University Tianjin 300071 People's Republic of China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of ChemistryNankai University Tianjin 300071 People's Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of ChemistryNankai University Tianjin 300071 People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 People's Republic of China
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19
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Xing L, Zhang Y, Li B, Du Y. In Situ Formation of RSCl/ArSeCl and Their Application to the Synthesis of 4-Chalcogenylisocumarins/Pyrones from o-(1-Alkynyl)benzoates and (Z)-2-Alken-4-ynoates. Org Lett 2019; 21:3620-3624. [DOI: 10.1021/acs.orglett.9b01046] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Linlin Xing
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yong Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Bing Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
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