1
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Li M, Yang S, Zhang J, Gao Z, Zheng L, Lu F, Feng Y. Electrochemical oxidative selective halogenation of pyrazolones for the synthesis of 4-halopyrazolones. Org Biomol Chem 2024. [PMID: 39034644 DOI: 10.1039/d4ob00982g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
An efficient and environmentally friendly electrochemical oxidative selective halogenation of pyrazolones has been developed under conditions free of metals, external oxidants, and external supporting electrolytes. The reaction demonstrates good functional group tolerance and maintains high efficiency in large-scale synthesis, yielding moderate to excellent yields of the desired 4-halopyrazolones. This method provides a green and convenient route for the direct installation of a halogen moiety into bioactive pyrazolone derivatives, which can be utilized in a myriad of applications.
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Affiliation(s)
- Minghan Li
- The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, 56 Yangming Road, Jiangxi, Nanchang 330006, P. R. China.
| | - Shilin Yang
- The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, 56 Yangming Road, Jiangxi, Nanchang 330006, P. R. China.
| | - Jingyi Zhang
- The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, 56 Yangming Road, Jiangxi, Nanchang 330006, P. R. China.
| | - Zixun Gao
- The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, 56 Yangming Road, Jiangxi, Nanchang 330006, P. R. China.
| | - Linyu Zheng
- The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, 56 Yangming Road, Jiangxi, Nanchang 330006, P. R. China.
| | - Fangling Lu
- The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, 56 Yangming Road, Jiangxi, Nanchang 330006, P. R. China.
| | - Yulin Feng
- The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, 56 Yangming Road, Jiangxi, Nanchang 330006, P. R. China.
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2
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Phakdeeyothin K, Viriyanukul T, Udomsasporn K, Phomphrai K, Yotphan S. Metal‐Free Aminomethylation of Pyrazolones: Direct Access to 4‐Aminomethylated Pyrazolones. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200467] [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)
- Kunita Phakdeeyothin
- Department of Chemistry and Center of Excellence for Innovation in Chemistry Faculty of Science Mahidol University 10400 Bangkok Thailand
| | - Tarm Viriyanukul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry Faculty of Science Mahidol University 10400 Bangkok Thailand
| | - Kwanchanok Udomsasporn
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Instituteof Science and Technology (VISTEC) 21210 Wangchan Rayong Thailand
| | - Khamphee Phomphrai
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Instituteof Science and Technology (VISTEC) 21210 Wangchan Rayong Thailand
| | - Sirilata Yotphan
- Department of Chemistry and Center of Excellence for Innovation in Chemistry Faculty of Science Mahidol University 10400 Bangkok Thailand
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3
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Konishi K, Yasui M, Miki K, Takeda N, Ueda M. Construction of pyrazolodiazepines using AuI, a dual functional gold catalyst. Org Biomol Chem 2022; 20:3382-3386. [PMID: 35357388 DOI: 10.1039/d2ob00199c] [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
N,N'-5,7-Fused compounds are important molecules exhibiting medicinal potential. Herein, we report a practical and robust method for synthesising pyrazolodiazepines from N-piperidinyl alkynylhydrazides using a AuI catalyst. The broad substrate scope of alkynylhydrazides and synthetic application of pyrazolodiazepines are demonstrated. In addition, control experiments provide detailed information on the reaction mechanism, in which AuI promotes both the sequential intramolecular nucleophilic addition and the double nucleophilic substitution reaction as a π-acidic and nucleophilic dual functional catalyst.
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Affiliation(s)
- Keiji Konishi
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
| | - Motohiro Yasui
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
| | - Kanae Miki
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
| | - Norihiko Takeda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
| | - Masafumi Ueda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
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4
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Wen K, Wu Y, Chen J, Shi J, Zheng M, Yao X, Tang X. Copper-Mediated Decarboxylative Coupling of 3-Indoleacetic Acids with Pyrazolones. ACS OMEGA 2022; 7:5274-5282. [PMID: 35187342 PMCID: PMC8851627 DOI: 10.1021/acsomega.1c06443] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/24/2022] [Indexed: 05/05/2023]
Abstract
A copper-mediated decarboxylative coupling reaction of 3-indoleacetic acids with pyrazolones was described. This protocol realized new functionalization of pyrazolones under simple reaction conditions and exhibited high functional group compatibility and broad substrate scope. Notably, the products displayed antiproliferative activity against cancer cells.
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5
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Cheng D, Meng X, Wang D, Zhao X, Wang Y, Ji Z. A palladium-catalyzed cascade approach for the synthesis of 3,3a,4,6,7,8,9,9a-octahydro-1H-benzo[f]isoindole-1,5(2H)-diones. JOURNAL OF CHEMICAL RESEARCH 2021. [DOI: 10.1177/17475198211058653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A synthetic method for the preparation of 3,3a,4,6,7,8,9,9a-octahydro-1 H-benzo[ f]isoindole-1,5(2 H)-diones from 1,6-dienes and vinyl iodides is developed using PdCl2(PPh3)2 as the catalyst. The presented approach exhibits a good functional group tolerance and affords moderate yields of the products. A mechanism is also proposed.
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Affiliation(s)
- Dong Cheng
- Department of Chemical and Material Engineering, Chaohu College, Chaohu, PR China
| | - Xiangzhen Meng
- Department of Chemical and Material Engineering, Chaohu College, Chaohu, PR China
| | - Dan Wang
- Department of Chemical and Material Engineering, Chaohu College, Chaohu, PR China
| | - Xuan Zhao
- Department of Chemical and Material Engineering, Chaohu College, Chaohu, PR China
| | - Yusheng Wang
- Department of Chemical and Material Engineering, Chaohu College, Chaohu, PR China
| | - Zhiyu Ji
- Department of Chemical and Material Engineering, Chaohu College, Chaohu, PR China
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6
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Shchegolkov EV, Burgart YV, Matsneva DA, Borisevich SS, Kadyrova RA, Orshanskaya IR, Zarubaev VV, Saloutin VI. Polyfluoroalkylated antipyrines in Pd-catalyzed transformations. RSC Adv 2021; 11:35174-35181. [PMID: 35493195 PMCID: PMC9042801 DOI: 10.1039/d1ra06967e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 10/21/2021] [Indexed: 01/08/2023] Open
Abstract
In the direct C–H arylation with arylhalogenides in the presence of Pd(OAc)2, trifluoromethyl-containing antipyrine reacts very slowly and incompletely owing to the low nucleophilicity of its C4 center. However, it was effective in modifying polyfluoroalkyl-substituted 4-bromo- and 4-iodo antipyrines by the Suzuki and Sonogashira reactions. It was established that using Pd2(dba)3 as catalyst and XPhos as phosphine ligand was the optimal catalytic system for the synthesis of 4-aryl- and 4-phenylethynyl-3-polyfluoroalkyl-antipyrines. Moreover, iodo-derivatives as the initial reagents were found to be more advantageous compared to bromo-containing analogs. It was found that 4-phenylethynyl-5-CF3-antipyrine has a moderate activity against the influenza virus A/Puerto Rico/8/34 (H1N1) and 4-iodo-5-CF3-antipyrine reveals a weak activity against the vaccine virus (strain Copenhagen) and bovine diarrhea virus (strain VC-1). Peculiarities of heterocyclic systems with electron-withdrawing groups (polyfluoroalkyl-containing antipyrines) in Pd-catalyzed C–H arylation and cross-coupling reactions.![]()
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Affiliation(s)
- Evgeny V Shchegolkov
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences S. Kovalevskoi St., 22 Ekaterinburg 620990 Russia
| | - Yanina V Burgart
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences S. Kovalevskoi St., 22 Ekaterinburg 620990 Russia
| | - Daria A Matsneva
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences S. Kovalevskoi St., 22 Ekaterinburg 620990 Russia
| | - Sophia S Borisevich
- Ufa Institute of Chemistry, Russian Academy of Sciences 71 October Ave. Ufa 450054 Russia
| | - Renata A Kadyrova
- Saint Petersburg Pasteur Research Institute of Epidemiology and Microbiology 14 Mira St. Saint-Petersburg 197101 Russia
| | - Iana R Orshanskaya
- Saint Petersburg Pasteur Research Institute of Epidemiology and Microbiology 14 Mira St. Saint-Petersburg 197101 Russia
| | - Vladimir V Zarubaev
- Saint Petersburg Pasteur Research Institute of Epidemiology and Microbiology 14 Mira St. Saint-Petersburg 197101 Russia
| | - Victor I Saloutin
- Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences S. Kovalevskoi St., 22 Ekaterinburg 620990 Russia
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7
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Sonowal P, Bhorali P, Sultana S, Gogoi S. Pd(ii)-Catalyzed regioselective functionalization of antipyrines: synthesis of pyrazolono-maleimides and pyrazolono-quinones. Org Biomol Chem 2021; 19:5333-5341. [PMID: 34042935 DOI: 10.1039/d1ob00819f] [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 Pd(ii)-catalyzed direct functionalization reaction of the 4Csp2-H bond of antipyrine derivatives is reported. This metal-catalyzed reaction of antipyrines with maleimides provided an easy and efficient access to biologically important pyrazolonomaleimides. This catalytic system is also applicable for C-4 functionalization of the antipyrine ring with quinone derivatives.
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Affiliation(s)
- Priya Sonowal
- Applied Organic Chemistry, Chemical Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, AcSIR, Ghaziabad-201002, India.
| | - Pratiksha Bhorali
- Applied Organic Chemistry, Chemical Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, AcSIR, Ghaziabad-201002, India.
| | - Sabera Sultana
- Applied Organic Chemistry, Chemical Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, AcSIR, Ghaziabad-201002, India.
| | - Sanjib Gogoi
- Applied Organic Chemistry, Chemical Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, AcSIR, Ghaziabad-201002, India.
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8
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Akhmadiev NS, Mescheryakova ES, Akhmetova VR, Khairullina VR, Khalilov LM, Ibragimov AG. Synthesis, Crystal Structure and Docking Studies as Potential Anti-Inflammatory Agents of Novel Antipyrine Sulfanyl Derivatives. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Sasmal A, Bera JK, Doucet H, Soulé JF. Reactivity of antipyrine and haloantipyrines in Pd-catalyzed C H bond arylations. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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10
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Kittikool T, Yotphan S. Metal-Free Direct C-H Thiolation and Thiocyanation of Pyrazolones. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901770] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Tanakorn Kittikool
- Department of Chemistry and Center of Excellence for Innovation in Chemistry; Faculty of Science; Mahidol University; Rama VI Road 10400 Bangkok Thailand
| | - Sirilata Yotphan
- Department of Chemistry and Center of Excellence for Innovation in Chemistry; Faculty of Science; Mahidol University; Rama VI Road 10400 Bangkok Thailand
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11
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Zhang Y, Nie LJ, Luo L, Mao JX, Liu JX, Xu GH, Chen D, Luo HQ. The selective condensation of pyrazolones to isatins in aqueous medium. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130916] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Kovalev IS, Savchuk MI, Kopchuk DS, Zyryanov GV, Pospelova TA, Rusinov VL, Chupakhin ON. A Convenient Synthetic Approach to Phenazone Derivatives Containing a 1,2,4-Triazine or Pyridine Fragment. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2019. [DOI: 10.1134/s1070428019060228] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Xiao Y, Wu X, Teng J, Sun S, Yu JT, Cheng J. Copper-catalyzed acylation of pyrazolones with aldehydes to afford 4-acylpyrazolones. Org Biomol Chem 2019; 17:7552-7557. [PMID: 31372617 DOI: 10.1039/c9ob01486a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Copper-catalyzed direct acylation of the alkenyl C-H bond in 1,2-dihydro-3H-pyrazol-3-ones has been developed, affording a series of 4-acylpyrazolones in moderate to good yields. Notably, this protocol involves readily accessible substrates and reagents, which have good functional group tolerance leading to pyrazolone derivatives under mild reaction conditions.
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Affiliation(s)
- Yan Xiao
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Gehu Road 1, Changzhou, 213164, P. R. China.
| | - Xiaopeng Wu
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Gehu Road 1, Changzhou, 213164, P. R. China.
| | - Jiangang Teng
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Gehu Road 1, Changzhou, 213164, P. R. China.
| | - Song Sun
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Gehu Road 1, Changzhou, 213164, P. R. China.
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Gehu Road 1, Changzhou, 213164, P. R. China.
| | - Jiang Cheng
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, and Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Gehu Road 1, Changzhou, 213164, P. R. China.
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14
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Kittikool T, Thupyai A, Phomphrai K, Yotphan S. Copper/Persulfate-Promoted Oxidative Decarboxylative C−H Acylation of Pyrazolones with α-Oxocarboxylic Acids: Direct Access to 4-Acylpyrazolones under Mild Conditions. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800464] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tanakorn Kittikool
- Center of Excellence for Innovation in Chemistry (PERCH-CIC); Department of Chemistry; Faculty of Science; Mahidol University; Bangkok 10400 Thailand
| | - Akkharaphong Thupyai
- Center of Excellence for Innovation in Chemistry (PERCH-CIC); Department of Chemistry; Faculty of Science; Mahidol University; Bangkok 10400 Thailand
| | - Khamphee Phomphrai
- Department of Materials Science and Engineering; School of Molecular Science and Engineering; Vidyasirimedhi Institute of Science and Technology (VISTEC); Wangchan Rayong 21210 Thailand
| | - Sirilata Yotphan
- Center of Excellence for Innovation in Chemistry (PERCH-CIC); Department of Chemistry; Faculty of Science; Mahidol University; Bangkok 10400 Thailand
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15
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Thupyai A, Pimpasri C, Yotphan S. DABCO-catalyzed silver-promoted direct thiolation of pyrazolones with diaryl disulfides. Org Biomol Chem 2018; 16:424-432. [DOI: 10.1039/c7ob02860a] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Efficient direct thiolation of N-substituted pyrazolones with diaryl disulfides was developed using a combination of DABCO and AgOAc to assist C–S bond formation.
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Affiliation(s)
- Akkharaphong Thupyai
- Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
| | - Chaleena Pimpasri
- Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
| | - Sirilata Yotphan
- Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
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16
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Muimhneacháin EÓ, Pardo LM, Bateman LM, Rao Khandavilli UB, Lawrence SE, McGlacken GP. Intramolecular Direct Arylation of 1,3-Diketone-Derived Enol Ethers in a Synthesis of Tricyclic Oxoisochromene Derivatives. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Eoin Ó Muimhneacháin
- Department of Chemistry and Analytical and Biological Chemistry Research Facility; University College Cork; College Road Cork Ireland
| | - Leticia M. Pardo
- Department of Chemistry and Analytical and Biological Chemistry Research Facility; University College Cork; College Road Cork Ireland
| | - Lorraine M. Bateman
- Department of Chemistry and Analytical and Biological Chemistry Research Facility; University College Cork; College Road Cork Ireland
| | - U. B. Rao Khandavilli
- Department of Chemistry and Analytical and Biological Chemistry Research Facility; University College Cork; College Road Cork Ireland
| | - Simon E. Lawrence
- Department of Chemistry and Analytical and Biological Chemistry Research Facility; University College Cork; College Road Cork Ireland
| | - Gerard P. McGlacken
- Department of Chemistry and Analytical and Biological Chemistry Research Facility; University College Cork; College Road Cork Ireland
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17
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Ma W, Dong H, Wang D, Ackermann L. Late-Stage Diversification of Non-Steroidal Anti-Inflammatory Drugs by Transition Metal-Catalyzed C-H Alkenylations, Thiolations and Selenylations. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600937] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wenbo Ma
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, and Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 People's Republic of China
| | - Hongbo Dong
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, and Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics; Chengdu University; Chengdu 610052 People's Republic of China
| | - Daoxin Wang
- College of Pharmacy and Biological Engineering; Chengdu University; Shiling, Chengdu People's Republic of China
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstraße 2 37077 Göttingen Germany
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18
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Affiliation(s)
- Khaled M. Elattar
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Ahmed A. Fadda
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
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19
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Grosse S, Pillard C, Massip S, Marchivie M, Jarry C, Bernard P, Guillaumet G. Ligandless Palladium-Catalyzed Regioselective Direct C–H Arylation of Imidazo[1,2-a]imidazole Derivatives. J Org Chem 2015; 80:8539-51. [DOI: 10.1021/acs.joc.5b00534] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Sandrine Grosse
- Institut
de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR-CNRS 7311, BP 6759, rue de Chartres 45067 Orléans Cedex 2, France
| | | | - Stéphane Massip
- Université de Bordeaux, CNRS - UMS 3033, INSERM US001 -Institut
Européen de Chimie et de Biologie -2 rue Robert Escarpit, 33607 Pessac, France
| | - Mathieu Marchivie
- ICMCB UPR CNRS 9048, Université Bordeaux, 87 Av. Doc. A. Schweitzer, F-33608 Pessac Cedex, France
| | - Christian Jarry
- Université de Bordeaux, CNRS - UMS 3033, INSERM US001 -Institut
Européen de Chimie et de Biologie -2 rue Robert Escarpit, 33607 Pessac, France
| | | | - Gérald Guillaumet
- Institut
de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR-CNRS 7311, BP 6759, rue de Chartres 45067 Orléans Cedex 2, France
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20
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Parekh N, Thomas J, John J, Kusurkar R, De Borggraeve WM, Dehaen W. Synthetic Protocol toward Fused Pyrazolone Derivatives via a Michael Addition and Reductive Ring Closing Strategy. J Org Chem 2014; 79:5338-44. [DOI: 10.1021/jo5005795] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nikita Parekh
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven , Celestijnenlaan 200F, 3001 Leuven, Belgium
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