1
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Nayek P, Mal P. Mimicking Ozonolysis via Mechanochemistry: Internal Alkynes to 1,2-Diketones using H 5IO 6. Chemistry 2024; 30:e202401027. [PMID: 38634437 DOI: 10.1002/chem.202401027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/18/2024] [Accepted: 04/18/2024] [Indexed: 04/19/2024]
Abstract
Utilizing periodic acid as an environmentally benign oxidizing agent, this study introduces a novel mechanochemical method that mimics ozonolysis to convert internal alkynes into 1,2-diketones, showcasing effective emulation of ozone's reactivity. Notably, this oxidation occurs at room temperature in aerobic conditions, eliminating the need for toxic transition metals, hazardous oxidants, or expensive solvents. Through control experiments validating the mechanism, substantial evidence supports a concerted reaction pathway. This progress marks a significant stride toward cleaner and more efficient chemical synthesis, mitigating the environmental impact of conventional processes. Assessing the green chemistry metrics in both solvent-free and previously reported solvent-based methods, our eco-friendly protocol demonstrates an E-factor of 7.40, a 51.7 % atom economy, a 45.5 % atom efficiency, 100 % carbon efficiency, and 11.9 % reaction mass efficiency when solvents are not used.
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Affiliation(s)
- Pravat Nayek
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, An OCC of Homi Bhabha National Institute, 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, An OCC of Homi Bhabha National Institute, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha, 752050, India
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2
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Saini RK, Borpatra PJ, Chaubey TN, Pandey SK. I 2-Mediated Site-Selective C-H Functionalization: Access to p-Amino-Substituted Unsymmetrical Benzils and Quinoxalines from Sulfoxonium Ylides. J Org Chem 2024; 89:5536-5545. [PMID: 38569000 DOI: 10.1021/acs.joc.3c02975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
An I2-mediated approach for selective C-H functionalization of unprotected aniline derivatives for synthesizing benzils and quinoxaline derivatives from sulfoxonium ylides has been described. Aniline derivatives and sulfoxonium ylides ornamented with different functional groups showed good compatibility. They afforded the corresponding products with moderate to high yields via a mild and simple procedure. Finally, we validated the practicality of this method by scaling up the reaction and further conversion of the synthesized derivatives into other valuable molecules.
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Affiliation(s)
- Rahul Kumar Saini
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221 005, Uttar Pradesh, India
| | - Paran J Borpatra
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221 005, Uttar Pradesh, India
| | - Trayambek Nath Chaubey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221 005, Uttar Pradesh, India
| | - Satyendra Kumar Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221 005, Uttar Pradesh, India
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3
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Zhou Y, Wang Y, Xu P, Han W, Xiong HY, Zhang G. Synthesis of Indolyl Phenyl Diketones through Visible-Light-Promoted Ni-Catalyzed Intramolecular Cyclization/Oxidation Sequence of Ynones. ACS ORGANIC & INORGANIC AU 2024; 4:241-247. [PMID: 38585509 PMCID: PMC10995934 DOI: 10.1021/acsorginorgau.3c00060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/14/2023] [Accepted: 12/18/2023] [Indexed: 04/09/2024]
Abstract
The combination of visible light catalysis and Ni catalysis has enabled the synthesis of indolyl phenyl diketones through the cyclization/oxidation process of ynones. This reaction proceeded under mild and base-free conditions and showed a broad scope and feasibility for gram-scale synthesis. Several natural products and biologically interesting molecules could be readily postfunctionalized by this method.
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Affiliation(s)
- Yufeng Zhou
- College
of Chemistry and Chemical Engineering, Henan
University, Kaifeng, 475004, P. R.
China
| | - Yaping Wang
- College
of Chemistry and Chemical Engineering, Henan
University, Kaifeng, 475004, P. R.
China
| | - Peidong Xu
- College
of Chemistry and Chemical Engineering, Henan
University, Kaifeng, 475004, P. R.
China
| | - Weiwei Han
- College
of Chemistry and Chemical Engineering, Henan
University, Kaifeng, 475004, P. R.
China
| | - Heng-Ying Xiong
- College
of Chemistry and Chemical Engineering, Henan
University, Kaifeng, 475004, P. R.
China
| | - Guangwu Zhang
- College
of Chemistry and Chemical Engineering, Henan
University, Kaifeng, 475004, P. R.
China
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4
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Chen DD, Zhang SL. Dual Oxidation of Epoxides with a High-Valent Cu(III)-CF 3 Compound and DMSO to Access 1,2-Diketones. J Org Chem 2023. [PMID: 38050841 DOI: 10.1021/acs.joc.3c01160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
This study reports sequential dehydrogenation and transfer oxygenation of 1,2-diarylepoxides by high-valent phenCu(III)(CF3)3 and DMSO to produce 1,2-diketones. The Cu(III)-CF3 compound serves as a CF3 radical source to abstract the hydrogen atom of the epoxide ring. The resulting ether α-carbon radical undergoes ring-opening rearrangement to give a ketone α-carbon radical intermediate, which is oxygenated by DMSO with the release of Me2S. The combination of a Cu(III)-CF3 compound and DMSO may be exploited to develop other novel oxidation reactions.
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Affiliation(s)
- Dou-Dou Chen
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Song-Lin Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
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5
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Tang J, Li W, Chiu TY, Martínez-Peña F, Luo Z, Chong CT, Wei Q, Gazaniga N, West TJ, See YY, Lairson LL, Parker CG, Baran PS. Synthesis of portimines reveals the basis of their anti-cancer activity. Nature 2023; 622:507-513. [PMID: 37730997 PMCID: PMC10699793 DOI: 10.1038/s41586-023-06535-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 08/11/2023] [Indexed: 09/22/2023]
Abstract
Marine-derived cyclic imine toxins, portimine A and portimine B, have attracted attention because of their chemical structure and notable anti-cancer therapeutic potential1-4. However, access to large quantities of these toxins is currently not feasible, and the molecular mechanism underlying their potent activity remains unknown until now. To address this, a scalable and concise synthesis of portimines is presented, which benefits from the logic used in the two-phase terpenoid synthesis5,6 along with other tactics such as exploiting ring-chain tautomerization and skeletal reorganization to minimize protecting group chemistry through self-protection. Notably, this total synthesis enabled a structural reassignment of portimine B and an in-depth functional evaluation of portimine A, revealing that it induces apoptosis selectively in human cancer cell lines with high potency and is efficacious in vivo in tumour-clearance models. Finally, practical access to the portimines and their analogues simplified the development of photoaffinity analogues, which were used in chemical proteomic experiments to identify a primary target of portimine A as the 60S ribosomal export protein NMD3.
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Affiliation(s)
- Junchen Tang
- Department of Chemistry, Scripps Research, La Jolla, CA, USA
| | - Weichao Li
- Department of Chemistry, Scripps Research, La Jolla, CA, USA
| | - Tzu-Yuan Chiu
- Department of Chemistry, Scripps Research, La Jolla, CA, USA
| | | | - Zengwei Luo
- Department of Chemistry, Scripps Research, La Jolla, CA, USA
| | | | - Qijia Wei
- Department of Chemistry, Scripps Research, La Jolla, CA, USA
| | | | - Thomas J West
- Department of Chemistry, Scripps Research, La Jolla, CA, USA
| | - Yi Yang See
- Department of Chemistry, Scripps Research, La Jolla, CA, USA
| | - Luke L Lairson
- Department of Chemistry, Scripps Research, La Jolla, CA, USA.
| | | | - Phil S Baran
- Department of Chemistry, Scripps Research, La Jolla, CA, USA.
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6
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Mondal S, Chatterjee N, Maity S. Recent Developments on Photochemical Synthesis of 1,n-Dicarbonyls. Chemistry 2023; 29:e202301147. [PMID: 37335758 DOI: 10.1002/chem.202301147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/19/2023] [Accepted: 06/19/2023] [Indexed: 06/21/2023]
Abstract
1,n-dicarbonyls are one of the most fascinating chemical feedstocks finding abundant usage in the field of pharmaceuticals. Besides, they are utilized in a plethora of synthesis in general synthetic organic chemistry. A number of 'conventional' methods are available for their synthesis, such as the Stetter reaction, Baker-Venkatraman rearrangement, oxidation of vicinal diols, and oxidation of deoxybenzoins, synonymous with unfriendly reagents and conditions. In the last 15 years or so, photocatalysis has taken the world of synthetic organic chemistry by a remarkable renaissance. It is fair to say now that everybody loves the light and photoredox chemistry has opened a new gateway to organic chemists towards milder, more simpler alternatives to the previously available methods, allowing access to many sensitive reactions and products. In this review, we present the readers with the photochemical synthesis of a variety of 1,n-dicarbonyls. Diverse photocatalytic pathways to these fascinating molecules have been discussed, placing special emphasis on the mechanisms, giving the reader an opportunity to find all these significant developments in one place.
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Affiliation(s)
- Subhashis Mondal
- Department of Chemistry & Chemical Biology, Indian Institute of Technology (ISM), Dhanbad, 826004, Jharkhand, India
| | - Nirbhik Chatterjee
- Department of Chemistry, Kanchrapara College, North 24 Parganas, 743145, West Bengal, India
| | - Soumitra Maity
- Department of Chemistry & Chemical Biology, Indian Institute of Technology (ISM), Dhanbad, 826004, Jharkhand, India
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7
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Karakaya I, Rizwan K, Munir S. Transition‐Metal Catalyzed Coupling Reactions for the Synthesis of (Het)aryl Ketones: An Approach from their Synthesis to Biological Perspectives. ChemistrySelect 2023. [DOI: 10.1002/slct.202204005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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8
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Co(II) and 2-amino-perimidinium based new generation hybrid material promoted facile dimerization of aroyl chloride: A route to α-diketone. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Jeena V, Majola N. Acid, Metal and Peroxide-Free Synthesis of 2,4,5-Trisubstituted Imidazoles Commencing from Internal Alkenes Using an Iodine/DMSO System. HETEROCYCLES 2023. [DOI: 10.3987/com-22-14781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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10
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Brauer J, Mötzing M, Gröst C, Hoffmann R, Berg T. Templated Generation of a Bcl-x L Inhibitor by Isomer-Free SPAAC Based on Azacyclonon-5-yne. Chemistry 2022; 28:e202202259. [PMID: 35989238 PMCID: PMC9827882 DOI: 10.1002/chem.202202259] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Indexed: 01/12/2023]
Abstract
High-affinity inhibitors of large protein-protein interactions often have a high molecular weight, which compromises their cell permeability and oral bioavailability. We recently presented isomer-free, strain-promoted azide-alkyne cycloaddition (iSPAAC) as a method by which to generate large, chemically uniform bioactive molecules inside living cells from two smaller components with higher cell permeability. Here, we present the synthesis of Fmoc-protected azacyclonon-5-yne (Fmoc-ACN) as the first cyclononyne suitable for iSPAAC. ACN facilitated the structure-guided development of a single-digit micromolar triazole inhibitor of the protein-protein interaction domain of the antiapoptotic protein Bcl-xL . Inhibitor formation in aqueous buffer at 37 °C, templated by the target protein Bcl-xL , proceeded 2800 times faster than the reaction between Fmoc-ACN and benzyl azide under standard conditions in acetonitrile. Our data demonstrate the utility of cyclononynes for iSPAAC and their potential for achieving vastly accelerated templated reactions in aqueous environments.
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Affiliation(s)
- Juliane Brauer
- Institute of Organic ChemistryLeipzig UniversityJohannisallee 2904103LeipzigGermany
| | - Marina Mötzing
- Institute of Bioanalytical Chemistry andCenter for Biotechnology and BiomedicineLeipzig UniversityDeutscher Platz 504103LeipzigGermany
| | - Corinna Gröst
- Institute of Organic ChemistryLeipzig UniversityJohannisallee 2904103LeipzigGermany
| | - Ralf Hoffmann
- Institute of Bioanalytical Chemistry andCenter for Biotechnology and BiomedicineLeipzig UniversityDeutscher Platz 504103LeipzigGermany
| | - Thorsten Berg
- Institute of Organic ChemistryLeipzig UniversityJohannisallee 2904103LeipzigGermany
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11
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Echemendía R, de Jesus MP, Furniel LG, Day DP, Burtoloso ACB. Molecular Iodine Mediated Oxidation of Arylated α‐Carbonyl Sulfoxonium Ylides to 1,2‐Dicarbonyl Containing Compounds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Radell Echemendía
- University of Sao Paulo: Universidade de Sao Paulo Physical Chemistry BRAZIL
| | - Matheus P. de Jesus
- University of Sao Paulo: Universidade de Sao Paulo Physical Chemistry BRAZIL
| | - Lucas G. Furniel
- University of Sao Paulo: Universidade de Sao Paulo Physical Chemistry BRAZIL
| | - David P Day
- University of Sao Paulo: Universidade de Sao Paulo Physical Chemistry BRAZIL
| | - Antonio Carlos Bender Burtoloso
- UNIVERSITY OF SÃO PAULO PHYSICAL CHEMISTRY Avenida João Dagnone, 1100, Loteamento Habitacional São Carlos 1INSTITUTO DE QUIMICA DE SAO CARLOS, UNIVERSIDADE DE SAO PAULO, CAMPUS 2 13563-120 SÃO CARLOS BRAZIL
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12
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Jinkala R, Tadiparthi K, Raghunadh A, Shiva Kumar KB, Venkateshwarlu R, Siddaiah V, Ramamohan H. Iodine Mediated Oxidative Cross-Coupling of Benzo[ d]Imidazo[2,1- b]Thiazoles with Ethylbenzene: An Unprecedented Approach of C3-Dicarbonylation. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2083198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Rajesh Jinkala
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
- Department of Organic Chemistry and FDW, Andhra University, Visakhapatnam, India
| | | | - Akula Raghunadh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - K. B. Shiva Kumar
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Rapolu Venkateshwarlu
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Vidavalur Siddaiah
- Department of Organic Chemistry and FDW, Andhra University, Visakhapatnam, India
| | - Hindupur Ramamohan
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
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13
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Pudner GL, Camp I, Scheerer JR. A Nonoxidative Sequence for the Preparation of 1,2-Diketone Derivatives Using Aldehyde and Organometallic Building Blocks. J Org Chem 2022; 87:8213-8222. [PMID: 35613467 DOI: 10.1021/acs.joc.2c00439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study investigates a synthetic sequence for the preparation of 1,2-diketone products. The sequence avoids oxidative conditions and instead employs reliable transformations including the Horner-Wadsworth-Emmons and addition of Grignard reagents to N-methyl-N-methoxy (Weinreb) amide intermediates. The reaction sequence is suitable for the synthesis of nonsymmetric aliphatic and aryl substituted derivatives.
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Affiliation(s)
- Gwyneth L Pudner
- Department of Chemistry, William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Isabela Camp
- Department of Chemistry, William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Jonathan R Scheerer
- Department of Chemistry, William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
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14
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Battula S, Desai AA, Soni JY, Mehta DP. Accessing Grignard Reluctant Aldehyde in 2-Oxoaldehyde by Organocuprates to Give [1,2] Addition and Oxidative Coupling Reactions. ACS OMEGA 2022; 7:5069-5078. [PMID: 35187323 PMCID: PMC8851654 DOI: 10.1021/acsomega.1c06031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
Novel finding of aldehyde in 2-oxoaldehyde (2OA) is presented as it unprecedentedly disinclines to react with Grignard reagents but reacts with moderate organocuprate reagents in anaerobic condition to give [1,2] addition (α-hydroxyketones) reaction. In the presence of air, the reaction produces an efficient protocol for the synthesis of 1,2-diones through a copper-catalyzed oxidative cross-coupling reaction at room temperature. Mechanistic studies indicate that α-hydroxy ketone perhaps is generated before the hydrolysis step/acid work-up process. The α-keto group of 2OA causes to exhibit this peculiar aldehyde behavior toward these organometallic reagents.
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Affiliation(s)
- Satyanarayana Battula
- Tarsadia
Institute of Chemical Sciences, Uka Tarsadia
University, Bardoli, Gujarat 394350, India
| | - Aman A. Desai
- Aether
Industries Pvt. Ltd., Sachin, Surat, Gujarat 394230, India
| | - Jigar Y. Soni
- Department
of Chemistry, Madhav University, Abu Road, Sirohi, Rajasthan 307026, India
| | - Dhruv P. Mehta
- Aether
Industries Pvt. Ltd., Sachin, Surat, Gujarat 394230, India
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15
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Kong L, Meng J, Tian W, Liu J, Hu X, Jiang ZH, Zhang W, Li Y, Bai LP. I 2-Catalyzed Carbonylation of α-Methylene Ketones to Synthesize 1,2-Diaryl Diketones and Antiviral Quinoxalines in One Pot. ACS OMEGA 2022; 7:1380-1394. [PMID: 35036799 PMCID: PMC8757360 DOI: 10.1021/acsomega.1c06017] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 12/10/2021] [Indexed: 05/03/2023]
Abstract
An efficient approach for the synthesis of 1,2-diaryl diketones was developed from readily available α-methylene ketones by catalysis of I2. In the same oxidation system, a novel one-pot procedure was established for the construction of antiviral and anticancer quinoxalines. The reactions proceeded well with a wide variety of substrates and good functional group tolerance, affording desired compounds in moderate to excellent yields. Quinoxalines 4ca and 4ad inhibited viral entry of SARS-CoV-2 spike pseudoviruses into HEK-293T-ACE2h host cells as dual blockers of both human ACE2 receptor and viral spike RBD with IC50 values of 19.70 and 21.28 μM, respectively. In addition, cytotoxic evaluation revealed that 4aa, 4ba, 4ia, and 4ab suppressed four cancer cells with IC50 values ranging from 6.25 to 28.55 μM.
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Affiliation(s)
- Lingkai Kong
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
- School
of Chemistry and Chemical Engineering, Linyi
University, Linyi, Shandong 276000, People’s Republic of China
| | - Jieru Meng
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
| | - Wenyue Tian
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
| | - Jiazheng Liu
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
| | - Xueping Hu
- School
of Chemistry and Chemical Engineering, Linyi
University, Linyi, Shandong 276000, People’s Republic of China
| | - Zhi-Hong Jiang
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
| | - Wei Zhang
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
| | - Yanzhong Li
- School
of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Li-Ping Bai
- State
Key Laboratory of Quality Research in Chinese Medicine, Macau Institute
for Applied Research in Medicine and Health, Guangdong-Hong Kong-Macao
Joint Laboratory of Respiratory Infectious Disease, Macau University of Science and Technology, Taipa 999078, Macau, People’s Republic
of China
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16
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deng ZT, Wu XD, Yuan Z, Yu NR, Ou YF, Zhao QS. Total Synthesis of Huperserratines A and B. Org Chem Front 2022. [DOI: 10.1039/d2qo00608a] [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
Huperserratines A (1) and B (2), two novel macrocyclic Lycopodium alkaloids, possess an aza-12-membered ring. Here, we describe the first total synthesis of these two natural products in 12 steps....
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17
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Shaikh SKJ, KAMBLE RAVINDRA, Bayannavar PK, Kariduraganavar MY. Benzils: A Review on their Synthesis. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - RAVINDRA KAMBLE
- Karnatak University, Dharwad-580003 CHEMISTRY DEPARTMENT OF CHEMISTRYKARNATAK UNIVERSITYPAVATE NAGAR 580003 DHARWAD INDIA
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18
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Zhang YE, Tong S, Wang MX. Selective Oxidation of Belt[4]arene[4]tropilidene and Its Application to Construct Hydrocarbon Belts of Truncated Cone Structure with Expand Cavity. Org Lett 2021; 23:7259-7263. [PMID: 34472872 DOI: 10.1021/acs.orglett.1c02643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Despite their unique structures, tantalizing properties, and potential applications in carbon nanoscience and technology, the synthesis and functionalization of zigzag hydrocarbon nanobelts have remained largely unexplored until recently. Reported herein is the selective transformations of belt[4]arene[4]tropilidenes and their application in the construction of novel belts. The oxidation of belt[4]arene[4]tropilidene with benzeneseleninic anhydride under controlled conditions selectively afforded mono- to tetrakis(α-diketone)-functionalized belt intermediates. A subsequent condensation reaction with 1,2-phenylenediacetonitrile and 1,2-phenylenediamine produced a diversity of unprecedented belts with various macrocyclic cavities.
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Affiliation(s)
- Yan-E Zhang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (MOE), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Shuo Tong
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (MOE), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Mei-Xiang Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (MOE), Department of Chemistry, Tsinghua University, Beijing 100084, China
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19
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Kumar A, Sridharan V. Transition Metal‐Catalyzed Synthesis of 1,2‐Diketones: An Overview. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100307] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Atul Kumar
- Department of Chemistry and Chemical Sciences Central University of Jammu Rahya-Suchani (Bagla), District-Samba Jammu-181143, J&K India
| | - Vellaisamy Sridharan
- Department of Chemistry and Chemical Sciences Central University of Jammu Rahya-Suchani (Bagla), District-Samba Jammu-181143, J&K India
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20
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Satyam K, Ramarao J, Suresh S. N-Heterocyclic carbene (NHC)-catalyzed intramolecular benzoin condensation-oxidation. Org Biomol Chem 2021; 19:1488-1492. [PMID: 33522549 DOI: 10.1039/d0ob02606a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
NHC-Catalyzed intramolecular benzoin condensation-oxidation is developed for the expedient synthesis of diverse cyclic 1,2-diketones incorporated in dibenzo-fused seven-membered heterocycles in good to excellent yields, under ambient conditions. The presented carbene-catalyzed transformation appears to proceed through the benzoin intermediate followed by aerobic oxidation.
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Affiliation(s)
- Killari Satyam
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Jakkula Ramarao
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Surisetti Suresh
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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21
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Bhatt GJ, Deota PT, Upadhyay D, Jha PK. Site-selective unidirectional benzylic sp 3 C–H oxidation of dodecahydrotriphenylene with RuCl 3–NaIO 4: formation of benzylic ketones. RSC Adv 2021; 11:34498-34502. [PMID: 35494771 PMCID: PMC9042685 DOI: 10.1039/d1ra06897k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 10/01/2021] [Indexed: 11/24/2022] Open
Abstract
Dodecahydrotriphenylene, a higher homologue of trindane chemoselectively undergoes unidirectional benzylic sp3 C–H oxidation and the central benzene ring remains intact unlike that in trindane under similar reaction conditions. RuO4 which generally attacks sp2 C–H to form oxidative products is found to give benzylic ketones via sp3 C–H oxidation. Density functional theory (DFT) calculations have also been performed to analyse the potential energy, energy barrier and HOMO–LUMO energy gap of the products. Dodecahydrotriphenylene, a higher homologue of trindane chemoselectively undergoes unidirectional benzylic sp3 C–H oxidation and the central benzene ring remains intact unlike that in trindane under similar reaction conditions.![]()
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Affiliation(s)
- Gaurang J. Bhatt
- Applied Chemistry Department, Faculty of Technology & Engineering, The Maharaja Sayajirao University of Baroda, Vadodara-390 001, Gujarat, India
| | - Pradeep T. Deota
- Applied Chemistry Department, Faculty of Technology & Engineering, The Maharaja Sayajirao University of Baroda, Vadodara-390 001, Gujarat, India
| | - Deepak Upadhyay
- Department of Applied Physics, Faculty of Technology & Engineering, The Maharaja Sayajirao University of Baroda, Vadodara-390 001, Gujarat, India
| | - Prafulla K. Jha
- Department of Physics, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara-390 001, Gujarat, India
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22
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Chen L, Zhang L, Tian Y, Li J, Liu Y. Copper/Iodine‐Cocatalyzed C‐C Cleavage of 1,3‐Dicarbonyl Compounds Toward 1,2‐Dicarbonyl Compounds. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000795] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Li‐Sha Chen
- Occupational Medicine Monitoring Station Institute of Occupational Medicine of Jiangxi 330006 Nanchang China
| | - Lu‐Bing Zhang
- Occupational Medicine Monitoring Station Institute of Occupational Medicine of Jiangxi 330006 Nanchang China
| | - Yue Tian
- Occupational Medicine Monitoring Station Institute of Occupational Medicine of Jiangxi 330006 Nanchang China
| | - Jin‐Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong University 330063 Nanchang China
| | - Yong‐Quan Liu
- Occupational Medicine Monitoring Station Institute of Occupational Medicine of Jiangxi 330006 Nanchang China
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23
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Teng L, Liu X, Guo P, Yu Y, Cao H. Visible-Light-Induced Regioselective Dicarbonylation of Indolizines with Oxoaldehydes via Direct C–H Functionalization. Org Lett 2020; 22:3841-3845. [DOI: 10.1021/acs.orglett.0c01094] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Lili Teng
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Xiang Liu
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Pengfeng Guo
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Yue Yu
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Hua Cao
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
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24
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Lu Y, Luo M, Hu M, Li Y, Li J. Dimethyl Sulfoxide as an Oxygen Atom Source Enabled Tandem Conversion of 2‐Alkynyl Carbonyls to 1,2‐Dicarbonyls. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000066] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuan Lu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
| | - Mu‐Jia Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
| | - Ming Hu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
| | - Yang Li
- 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
- State Key Laboratory of Applied Organic ChemistryLanzhou University Lanzhou 730000 People's Republic of China
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25
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Song T, Ma Z, Ren P, Yuan Y, Xiao J, Yang Y. A Bifunctional Iron Nanocomposite Catalyst for Efficient Oxidation of Alkenes to Ketones and 1,2-Diketones. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05197] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tao Song
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Laoshan District, Qingdao 266101, China
| | - Zhiming Ma
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Laoshan District, Qingdao 266101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peng Ren
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Laoshan District, Qingdao 266101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Youzhu Yuan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Production of Alcohols-Ethers-Esters, College of Chemistry and Chemical Engineering, Xiamen 361005, P. R. China
| | - Jianliang Xiao
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
| | - Yong Yang
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Laoshan District, Qingdao 266101, China
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26
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Saberi D, Hashemi H, Ghanaatzadeh N, Moghadam M, Niknam K. Ruthenium/dendrimer complex immobilized on silica‐functionalized magnetite nanoparticles catalyzed oxidation of stilbenes to benzil derivatives at room temperature. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5563] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Dariush Saberi
- Fisheries and Aquaculture Department, College of Agriculture and Natural ResourcesPersian Gulf University Bushehr 75169 Iran
- Marine Chemistry Department, Faculty of Marine Science and TechnologyPersian Gulf University Bushehr 75169 Iran
| | - Hajar Hashemi
- Department of Chemistry, Faculty of SciencesPersian Gulf University Bushehr 75169 Iran
| | - Niloofar Ghanaatzadeh
- Department of Chemistry, Faculty of SciencesPersian Gulf University Bushehr 75169 Iran
| | - Majid Moghadam
- Catalysis Division, Department of ChemistryUniversity of Isfahan Isfahan 81746‐73441 Iran
| | - Khodabakhsh Niknam
- Department of Chemistry, Faculty of SciencesPersian Gulf University Bushehr 75169 Iran
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27
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Chen B, Wu XF. Palladium-Catalyzed Synthesis of 1,2-Diketones from Aryl Halides and Organoaluminum Reagents Using tert-Butyl Isocyanide as the CO Source. Org Lett 2020; 22:636-641. [PMID: 31908172 DOI: 10.1021/acs.orglett.9b04414] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, an interesting and practical procedure for the synthesis of 1,2-diketones from aryl halides and organoaluminum reagents has been developed. Employing tert-butyl isocyanide as the CO source and palladium as the catalyst, the desired 1,2-diketones were isolated in good to excellent yields with good functional group tolerance. Concerning the reaction partners, besides aryl halides, both alkyl- and arylaluminum reagents were all suitable substrates here.
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Affiliation(s)
- Bo Chen
- Department of Chemistry , Zhejiang Sci-Tech University , Xiasha Campus, Hangzhou 310018 , People's Republic of China.,Leibniz-Institut für Katalyse e. V. an der Universität Rostock , Albert-Einstein-Straβe 29a , 18059 Rostock , Germany
| | - Xiao-Feng Wu
- Department of Chemistry , Zhejiang Sci-Tech University , Xiasha Campus, Hangzhou 310018 , People's Republic of China.,Leibniz-Institut für Katalyse e. V. an der Universität Rostock , Albert-Einstein-Straβe 29a , 18059 Rostock , Germany
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28
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Jiang H, Tang X, Liu S, Wang L, Shen H, Yang J, Wang H, Gui QW. Ultrasound accelerated synthesis of O-alkylated hydroximides under solvent- and metal-free conditions. Org Biomol Chem 2019; 17:10223-10227. [PMID: 31777898 DOI: 10.1039/c9ob02245g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A novel, sustainable, environmentally friendly, high substrate scope, efficient, solvent-free and metal catalyst-free method for the cross-dehydrogenative coupling (CDC) reaction between N-hydroxyphthalimide (NHPI) and benzyl/ether compounds is described. This coupling reaction proceeds through ultrasound acceleration. Compared to conventional heating conditions, the use of ultrasound techniques not only improves the reaction efficiency and enhances the reaction rate but also minimizes the side reactions.
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Affiliation(s)
- Hongmei Jiang
- College of Science, Hunan Agricultural University, Changsha 410128, People's Republic of China. and State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Xiaoyue Tang
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China
| | - Sihan Liu
- College of Science, Hunan Agricultural University, Changsha 410128, People's Republic of China.
| | - Lian Wang
- College of Science, Hunan Agricultural University, Changsha 410128, People's Republic of China.
| | - Haicheng Shen
- College of Science, Hunan Agricultural University, Changsha 410128, People's Republic of China.
| | - Jiankui Yang
- College of Science, Hunan Agricultural University, Changsha 410128, People's Republic of China.
| | - Huixian Wang
- College of Science, Hunan Agricultural University, Changsha 410128, People's Republic of China.
| | - Qing-Wen Gui
- College of Science, Hunan Agricultural University, Changsha 410128, People's Republic of China.
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29
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Wang F, Zhang X, He Y, Fan X. Synthesis of β-Dicarbonylated Tetrahydropiperidines via Direct Oxidative Cross-Coupling between Different C(sp3)–H Bonds. J Org Chem 2019; 85:2220-2230. [DOI: 10.1021/acs.joc.9b02924] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Fang Wang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, School of Environment, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, School of Environment, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yan He
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, School of Environment, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, School of Environment, Henan Normal University, Xinxiang, Henan 453007, China
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30
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Bansode AH, Suryavanshi G. Iodine-Mediated Oxidative Rearrangement of α,β-Unsaturated Diaryl Ketones: A Facile Access to 1,2-Diaryl Diketones. ACS OMEGA 2019; 4:9636-9644. [PMID: 31460054 PMCID: PMC6648810 DOI: 10.1021/acsomega.9b00833] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 05/17/2019] [Indexed: 05/03/2023]
Abstract
A metal-free oxidative rearrangement was explored for the synthesis of 1,2-diaryl diketones by utilizing α,β-unsaturated diaryl ketones and I2/TBHP in good to high yields. The reaction proceeds via oxidative aryl migration, followed by C-C bond cleavage. A simple and high-yielding protocol was developed for the synthesis of a wide range of 1,2-diaryl diketones, which are the backbone for a variety of medicinally important molecules.
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Affiliation(s)
- Ajay H. Bansode
- Chemical
Engineering & Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), New Delhi 110 025, India
| | - Gurunath Suryavanshi
- Chemical
Engineering & Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), New Delhi 110 025, India
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31
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Ye CP, Ling R, Yang LF, Zhang Q, Han J, Chen XD. Syntheses, crystal structures and photocatalytic properties of transition metal complexes based on 9,10-anthraquinone-1,3-dicarboxylate. TRANSIT METAL CHEM 2019. [DOI: 10.1007/s11243-019-00334-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Dechert-Schmitt AM, Garnsey MR, Wisniewska HM, Murray JI, Lee T, Kung DW, Sach N, Blackmond DG. Highly Modular Synthesis of 1,2-Diketones via Multicomponent Coupling Reactions of Isocyanides as CO Equivalents. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00581] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | - Michelle R. Garnsey
- Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States
| | - Hanna M. Wisniewska
- Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States
| | - James I. Murray
- Department of Chemistry, Scripps Research, La Jolla, California 92037, United States
| | - Taegyo Lee
- Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States
| | - Daniel W. Kung
- Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States
| | - Neal Sach
- Pfizer Worldwide Research and Development, Groton, Connecticut 06340, United States
| | - Donna G. Blackmond
- Department of Chemistry, Scripps Research, La Jolla, California 92037, United States
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33
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Vishwakarma RK, Kumar S, Sharma AK, Singh R, Singh KN. An Efficient Synthesis of 1,2‐Diketones by Oxidative Cross‐coupling of Alkynes and Aryl Triazenes using Copper Catalysis. ChemistrySelect 2019. [DOI: 10.1002/slct.201901002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ramesh Kumar Vishwakarma
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Saurabh Kumar
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Anup Kumar Sharma
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Rahul Singh
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Krishna Nand Singh
- Department of Chemistry (Centre of Advanced Study)Institute of ScienceBanaras Hindu University Varanasi 221005 India
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34
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Liu B, Cheng J, Li Y, Li JH. Oxidative tandem annulation of 1-(2-ethynylaryl)prop-2-en-1-ones catalyzed by cooperative iodine and TBHP. Chem Commun (Camb) 2019; 55:667-670. [DOI: 10.1039/c8cc09271k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Metal-free I2-catalyzed tandem annulation of 1,6-enynes to access 1H-cyclopropa-[b]naphthalene-2,7-diones using TBHP is presented.
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Affiliation(s)
- Bang Liu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Jiang Cheng
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- China
| | - Yang Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
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35
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Gao S, Zheng J, Ge G, Luo J. Cu–Catalyzed Tandem Oxidation of
N
‐Substituted Indolines to Isatins. ChemistrySelect 2018. [DOI: 10.1002/slct.201803312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Shanshan Gao
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 P. R. China
| | - Junliang Zheng
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 P. R. China
| | - Guoping Ge
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 P. R. China
| | - Junfei Luo
- School of Materials Science and Chemical EngineeringNingbo University Ningbo 315211 P. R. China
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36
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Tamuli KJ, Bordoloi M. KI‐I
2
‐DMSO: An Improved Microwave‐Assisted Selective Oxidation of Alkenes into 1,2‐Diketones. ChemistrySelect 2018. [DOI: 10.1002/slct.201800433] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kashyap J. Tamuli
- Natural Products Chemistry GroupCSIR-North East Institute of Science & Technology, Jorhat 785006 Assam India
- Academy of Scientific and Innovative Research, CSIR India
| | - Manobjyoti Bordoloi
- Natural Products Chemistry GroupCSIR-North East Institute of Science & Technology, Jorhat 785006 Assam India
- Academy of Scientific and Innovative Research, CSIR India
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37
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Li X, Xia D, Wen Z, Gong B, Sun M, Wu Y, Zhang J, Sun J, Wu Y, Bao K, Zhang W. Magnetic magnetite nanoparticals catalyzed selective oxidation of α-hydroxy ketones with air and one-pot synthesis of benzilic acid and phenytoin derivatives. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.05.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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38
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Ye CP, Xu G, Wang Z, Han J, Xue L, Cao FY, Zhang Q, Yang LF, Lin LZ, Chen XD. Design and synthesis of functionalized coordination polymers as recyclable heterogeneous photocatalysts. Dalton Trans 2018; 47:6470-6478. [PMID: 29691537 DOI: 10.1039/c8dt00902c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The functionalized ligand 9,10-anthraquinone-1,4-dicarboxylate acid (H2AQDC) was designed and synthesized in order to develop metal-organic coordination polymers as heterogeneous catalysts with a photosensitizing feature. Two major considerations of the ligand design are anthraquinone moieties for photosensitizing to harvest light and carboxylate groups for polymeric coordination toward less solubility. A series of transition metal complexes based on this ligand were synthesized subsequently, namely {Co(AQDC)(H2O)3·2H2O}n (Co-AQDC), {Ni(AQDC)(H2O)3·2H2O}n (Ni-AQDC), {[Cu(AQDC)(H2O)3][Cu(AQDC)(H2O)2(DMF)]·(H2O)4}n (Cu-AQDC), {Zn1.5(AQDC)(OH)(H2O)2·H2O}n (Zn-AQDC), {Ag2(AQDC)(CH3OH)}n (Ag-AQDC). Both the ligand and its transition metal complexes are able to catalyze the visible-light driven oxidation reactions of alkynes into 1,2-diketones in air under mild conditions, in which compound Ni-AQDC demonstrates the best activity. This catalyst can be easily isolated from the reaction mixture by filtration with a trace amount of loss in solution and is ready for recycled use after simple washing and drying without any need for regeneration. Remarkably, the catalyst shows no loss of activity after five catalytic cycles and X-ray powder diffraction proves no change in the structure after five runs. This designed metal-organic coordination polymer represents an environmentally friendly, economical and recyclable photocatalyst, constituting a good candidate for photocatalytic organic syntheses in terms of green chemistry.
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Affiliation(s)
- Cai-Ping Ye
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
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39
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Shaik SP, Sultana F, Ravikumar A, Sunkari S, Alarifi A, Kamal A. Regioselective oxidative cross-coupling of benzo[d]imidazo[2,1-b]thiazoles with styrenes: a novel route to C3-dicarbonylation. Org Biomol Chem 2018; 15:7696-7704. [PMID: 28872171 DOI: 10.1039/c7ob01778b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel I2 promoted, highly efficient metal-free and peroxide-free greener domino protocol for the C3-dicarbonylation of benzo[d]imidazo[2,1-b]thiazoles (IBTs) with styrenes has been developed via oxidative cleavage of the C(sp2)-H bond, followed by C3-nucleophilic attack of IBT and oxidation. Interestingly, under these conditions 2-(benzo[d]imidazo[2,1-b]thiazol-2-yl)aniline gave the benzo[4',5']thiazolo[2',3':2,3]imidazo[4,5-c]quinoline derivative via oxidative cleavage of the C(sp2)-H bond, followed by Pictet-Spengler cyclization and aromatization. This method offers the advantages of broad substrate scope, ecofriendly feature and high atom economy apart from higher yields.
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Affiliation(s)
- Siddiq Pasha Shaik
- Medicinal Chemistry and Biotechnology Division, CSIR-Indian Institute of Chemical Technology (IICT), Hyderabad-500007, India.
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40
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Chen R, Chen J, Zhang J, Wan X. Combination of Tetrabutylammonium Iodide (TBAI) withtert-Butyl Hydroperoxide (TBHP): An Efficient Transition-Metal-Free System to Construct Various Chemical Bonds. CHEM REC 2018. [DOI: 10.1002/tcr.201700069] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Rongxiang Chen
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China. Fax: (+86) 512-6588-0334
| | - Jijun Chen
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China. Fax: (+86) 512-6588-0334
| | - Jie Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China. Fax: (+86) 512-6588-0334
| | - Xiaobing Wan
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China. Fax: (+86) 512-6588-0334
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41
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Singh VK, Maurya A, Kesharwani N, Kachhap P, Kumari S, Mahato AK, Mishra VK, Haldar C. Synthesis, characterization, and catalytic oxidation of styrene, cyclohexene, allylbenzene, and cis-cyclooctene by recyclable polymer-grafted Schiff base complexes of vanadium(IV). J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1434516] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Vijay Kumar Singh
- Department of Applied Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, India
| | - Abhishek Maurya
- Department of Applied Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, India
| | - Neha Kesharwani
- Department of Applied Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, India
| | - Payal Kachhap
- Department of Applied Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, India
| | - Sweta Kumari
- Department of Applied Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, India
| | - Arun Kumar Mahato
- Department of Applied Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, India
| | - Vivek Kumar Mishra
- Department of Applied Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, India
| | - Chanchal Haldar
- Department of Applied Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, India
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42
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Maljutenko K, Borovkov V, Kananovich D, Järving I, Lopp M. Aerobic cascade oxidation of substituted cyclopentane-1,2-diones using metalloporphyrin catalysts. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.12.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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43
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Kumar Y, Jaiswal Y, Kumar A. Two-Step One-Pot Synthesis of Unsymmetrical (Hetero)Aryl 1,2-Diketones by Addition-Oxygenation of Potassium Aryltrifluoroborates to (Hetero)Arylacetonitriles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701625] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yogesh Kumar
- Department of Chemistry; Indian Institute of Technology Patna; 801103 Bihta Bihar India
| | - Yogesh Jaiswal
- Department of Chemistry; Indian Institute of Technology Patna; 801103 Bihta Bihar India
| | - Amit Kumar
- Department of Chemistry; Indian Institute of Technology Patna; 801103 Bihta Bihar India
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44
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Xue JW, Zeng M, Hou X, Chen Z, Yin G. Catalytic Oxidation of Alkynes into 1,2-Diketone Derivatives by Using a PdII
/Lewis-Acid Catalyst. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700556] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jing-Wen Xue
- School of Chemistry and Chemical Engineering; Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology; Wuhan 430074 P. R. China
| | - Miao Zeng
- School of Chemistry and Chemical Engineering; Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology; Wuhan 430074 P. R. China
| | - Xianfei Hou
- School of Chemistry and Chemical Engineering; Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology; Wuhan 430074 P. R. China
| | - Zhuqi Chen
- School of Chemistry and Chemical Engineering; Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology; Wuhan 430074 P. R. China
| | - Guochuan Yin
- School of Chemistry and Chemical Engineering; Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology; Wuhan 430074 P. R. China
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45
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Muschallik L, Molinnus D, Bongaerts J, Pohl M, Wagner T, Schöning MJ, Siegert P, Selmer T. (R,R)-Butane-2,3-diol dehydrogenase from Bacillus clausii DSM 8716 T: Cloning and expression of the bdhA-gene, and initial characterization of enzyme. J Biotechnol 2017; 258:41-50. [PMID: 28793235 DOI: 10.1016/j.jbiotec.2017.07.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 06/09/2017] [Accepted: 07/21/2017] [Indexed: 12/01/2022]
Abstract
The gene encoding a putative (R,R)-butane-2,3-diol dehydrogenase (bdhA) from Bacillus clausii DSM 8716T was isolated, sequenced and expressed in Escherichia coli. The amino acid sequence of the encoded protein is only distantly related to previously studied enzymes (identity 33-43%) and exhibited some uncharted peculiarities. An N-terminally StrepII-tagged enzyme variant was purified and initially characterized. The isolated enzyme catalyzed the (R)-specific oxidation of (R,R)- and meso-butane-2,3-diol to (R)- and (S)-acetoin with specific activities of 12U/mg and 23U/mg, respectively. Likewise, racemic acetoin was reduced with a specific activity of up to 115U/mg yielding a mixture of (R,R)- and meso-butane-2,3-diol, while the enzyme reduced butane-2,3-dione (Vmax 74U/mg) solely to (R,R)-butane-2,3-diol via (R)-acetoin. For these reactions only activity with the co-substrates NADH/NAD+ was observed. The enzyme accepted a selection of vicinal diketones, α-hydroxy ketones and vicinal diols as alternative substrates. Although the physiological function of the enzyme in B. clausii remains elusive, the data presented herein clearly demonstrates that the encoded enzyme is a genuine (R,R)-butane-2,3-diol dehydrogenase with potential for applications in biocatalysis and sensor development.
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Affiliation(s)
- Lukas Muschallik
- Institute of Nano- and Biotechnologies, Aachen University of Applied Sciences, 52428 Jülich, Germany
| | - Denise Molinnus
- Institute of Nano- and Biotechnologies, Aachen University of Applied Sciences, 52428 Jülich, Germany
| | - Johannes Bongaerts
- Institute of Nano- and Biotechnologies, Aachen University of Applied Sciences, 52428 Jülich, Germany
| | - Martina Pohl
- IBG-1: Biotechnology, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Torsten Wagner
- Institute of Nano- and Biotechnologies, Aachen University of Applied Sciences, 52428 Jülich, Germany
| | - Michael J Schöning
- Institute of Nano- and Biotechnologies, Aachen University of Applied Sciences, 52428 Jülich, Germany
| | - Petra Siegert
- Institute of Nano- and Biotechnologies, Aachen University of Applied Sciences, 52428 Jülich, Germany
| | - Thorsten Selmer
- Institute of Nano- and Biotechnologies, Aachen University of Applied Sciences, 52428 Jülich, Germany.
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46
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Jiang KM, Luesakul U, Zhao SY, An K, Muangsin N, Neamati N, Jin Y, Lin J. Tautomeric-Dependent Lactam Cycloaddition with Nitrile Oxide: Facile Synthesis of 1,2,4-Oxadiazole[4,5- a]indolone Derivatives. ACS OMEGA 2017; 2:3123-3134. [PMID: 30023685 PMCID: PMC6044867 DOI: 10.1021/acsomega.7b00490] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 06/19/2017] [Indexed: 06/08/2023]
Abstract
A concise, metal-free, and gram-scale strategy to convert indoline-2,3-diones to 1,2,4-oxadiazole[4,5-a]indolones through an improved [3 + 2] cycloaddition of α-ketone-lactam with nitrile oxides has been developed. The lactim form of the resonance structure of isatin in protic solvents is the key active dipolarophile that shows chemo- and regioselectivity under experimental and theoretical conditions. This strategy conveniently enabled the assembly of several 1,2,4-oxadiazole[4,5-a]indolines with a broad range of functional groups. Compounds 3a and 4b exhibit cytotoxicity in the NCI/ADR-RES, SKOV3, and OVCAR8 cell lines.
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Affiliation(s)
- Kun-Ming Jiang
- Key
Laboratory of Medicinal Chemistry for Natural Resource, Ministry of
Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Urarika Luesakul
- Department
of Medicinal Chemistry, College of Pharmacy, and Translational Oncology
Program, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department
of Chemistry, Faculty of Science, Chulalongkorn
University, Bangkok 10330, Thailand
| | - Shu-Yue Zhao
- Key
Laboratory of Medicinal Chemistry for Natural Resource, Ministry of
Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Kun An
- Key
Laboratory of Medicinal Chemistry for Natural Resource, Ministry of
Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Nongnuj Muangsin
- Department
of Chemistry, Faculty of Science, Chulalongkorn
University, Bangkok 10330, Thailand
| | - Nouri Neamati
- Department
of Medicinal Chemistry, College of Pharmacy, and Translational Oncology
Program, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Yi Jin
- Key
Laboratory of Medicinal Chemistry for Natural Resource, Ministry of
Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
- Department
of Medicinal Chemistry, College of Pharmacy, and Translational Oncology
Program, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jun Lin
- Key
Laboratory of Medicinal Chemistry for Natural Resource, Ministry of
Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
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47
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Tandem and chemoselective synthesis of benzil derivatives from styrene and arene diazonium salts. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.076] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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48
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Qin HT, Xu X, Liu F. Aerobic Oxidation of Alkynes to 1,2-Diketones by Organic Photoredox Catalysis. ChemCatChem 2017. [DOI: 10.1002/cctc.201700061] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hai-Tao Qin
- Jiangsu Key Laboratory of Translational Research and; Therapy for Neuro-Psycho-Diseases and Department of Medicinal Chemistry; College of Pharmaceutical Sciences; Soochow University; 199 Ren-Ai Road Suzhou Jiangsu 215123 China
| | - Xiao Xu
- Jiangsu Key Laboratory of Translational Research and; Therapy for Neuro-Psycho-Diseases and Department of Medicinal Chemistry; College of Pharmaceutical Sciences; Soochow University; 199 Ren-Ai Road Suzhou Jiangsu 215123 China
| | - Feng Liu
- Jiangsu Key Laboratory of Translational Research and; Therapy for Neuro-Psycho-Diseases and Department of Medicinal Chemistry; College of Pharmaceutical Sciences; Soochow University; 199 Ren-Ai Road Suzhou Jiangsu 215123 China
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49
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Ragupathi A, Charpe VP, Sagadevan A, Hwang KC. Visible Light-Mediated Copper(I)-Catalysed Aerobic Oxidation of Ynamides/Ynamines at Room Temperature: A Sustainable Approach to the Synthesis of α-Ketoimides/α-Ketoamides. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600925] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
| | | | | | - Kuo Chu Hwang
- Department of Chemistry; National Tsing Hua University; Hsinchu Taiwan, R.O.C
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50
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Visible-light- induced aerobic dioxygenation of styrenes under metal- and additive-free ambient conditions. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.12.073] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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