1
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Dastari S, Murugappan S, John SE, Shankaraiah N. Microwave-Assisted Ru(II)-Catalyzed Regioselective Methyl Acylation of 2-Arylbenzoazoles: Synthesis of Benzofuran Conjugates via C-H Activation/Annulation. J Org Chem 2024; 89:7027-7035. [PMID: 38688712 DOI: 10.1021/acs.joc.4c00402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
An efficient Ru(II)-catalyzed C-H functionalization protocol for 2-arylbenzoazoles as the directing group and sulfoxonium ylide has been developed. Gratifyingly, concomitant annulation was observed when 3-(benzo[d]azol-2-yl) phenol was used, enabling the construction of benzofuran conjugates. Notably, the utilization of water as the solvent and an energy efficient approach makes the reaction greener, contributing to overall sustainability. This protocol exhibits excellent scalability up to the gram scale with a diverse array of substitutions. Furthermore, the mechanism was examined by ESI-MS, and photophysical studies were also performed.
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Affiliation(s)
- Sowmya Dastari
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Solai Murugappan
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Stephy Elza John
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India
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2
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Luo F, He S, Gou Q, Chen J, Zhang M. Palladium-catalyzed ortho-C-H hydroxylation of benzoic acids. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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3
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Chatterjee T, Ranu BC. Synthesis of Organosulfur and Related Heterocycles under Mechanochemical Conditions. J Org Chem 2021; 86:13895-13910. [PMID: 34351760 DOI: 10.1021/acs.joc.1c01454] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the last few decades, ball-milling has received tremendous attention as a "green tool" for conducting various challenging organic transformations under transition-metal-free and solvent-free conditions. Organosulfur and related heterocycles are ubiquitous in numerous biologically active molecules with potential applications, and those molecules could be synthesized from readily available starting materials under mechanochemical conditions without using any hazardous chemical or solvent. This synopsis highlights the green strategies developed in recent times to synthesize organosulfur and related heterocycles under ball-milling conditions.
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Affiliation(s)
- Tanmay Chatterjee
- Department of Chemistry, Birla Institute of Technology and Science, Pilani (BITS Pilani), Hyderabad Campus, Jawahar Nagar, Hyderabad 500078, Telangana, India
| | - Brindaban C Ranu
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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4
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Sunny S, John SE, Shankaraiah N. Exploration of C‐H Activation Strategies in Construction of Functionalized 2‐Aryl Benzoazoles: A Decisive Review. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Steeva Sunny
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Stephy Elza John
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
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5
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Shinde VN, Rangan K, Kumar D, Kumar A. Palladium-Catalyzed Weakly Coordinating Lactone-Directed C-H Bond Functionalization of 3-Arylcoumarins: Synthesis of Bioactive Coumestan Derivatives. J Org Chem 2021; 86:9755-9770. [PMID: 34181412 DOI: 10.1021/acs.joc.1c01097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A palladium-catalyzed highly regioselective ortho-selective C-H functionalization of 3-arylcoumarins has been developed. The method utilizes the weakly coordinating lactone as a directing group. The versatility of the strategy is highlighted by developing methodologies for alkenylation, halogenation, fluoroalkoxylation, and hydroxylation. Different functional groups were well tolerated, and functionalized coumarins were obtained in moderate to high yields. The method also showed good selectivity for monofunctionalization versus difunctionalization. The generated ortho-hydroxy derivatives were cyclized in the presence of DDQ, thus developing a simple and fast method for the synthesis of bioactive coumestan from 3-arylcoumarins.
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Affiliation(s)
- Vikki N Shinde
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Telangana 500078, India
| | - Dalip Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
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6
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Gadekar SP, Lande MK. Ruthenium silicate (RS-1) zeolite: novel heterogeneous efficient catalyst for synthesis of 2-arylbenzothiazole derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-020-04353-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Jiang J, Yuan D, Ma C, Song W, Lin Y, Hu L, Zhang Y. Palladium-Catalyzed Regiospecific peri- and ortho-C-H Oxygenations of Polyaromatic Rings Mediated by Tunable Directing Groups. Org Lett 2021; 23:279-284. [PMID: 33352055 DOI: 10.1021/acs.orglett.0c03701] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient divergent approach of Pd-catalyzed C-H oxygenation of polyaromatic rings is described. Reversible directing groups enable regiospecific peri- and ortho-oxygenation to readily access a wide array of polyaromatic phenols without pre- and postmanipulation of directing groups. The systematic mechanistic investigation, including deuterium-labeling experiments, palladacycle trapping, and DFT calculations, reveals that the tunable ligand-assisted C-H bond cleavage played a crucial role during the reaction process.
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Affiliation(s)
- Jing Jiang
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Dandan Yuan
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Congzhe Ma
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Wanbin Song
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Yaoyu Lin
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Lihong Hu
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Yinan Zhang
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
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8
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Luo P, Gan F, Lin J, Ding Q. Recent Advances in the Synthesis and Applications of 2-Arylbenzothiazoles. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707208] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review firstly covers the applications of 2-arylbenzothiazoles as amyloid imaging agents, antitumor agents, and organic luminescent materials. Then we review the recent advances in the synthesis of 2-arylbenzothiazole derivatives. On the one hand, we introduce the approaches for construction of the 2-arylbenzothiazole core, including the following categories: (i) classic condensation of 2-aminothiophenols, (ii) direct arylation of benzothiazoles, (iii) intramolecular cyclization of thiobenzanilides, and (iv) tandem cyclization of anilines/ nitroarenes with elemental sulfur or sulfides. On the other hand, the transition-metal-catalyzed direct C–H functionalizations of 2-arylbenzothiazoles are also involved in this review.1 Introduction2 Applications of 2-Arylbenzothiazoles3 Construction of the 2-Arylbenzothiazole Core4 Synthesis 2-Arylbenzothiazoles via Direct C–H Functionalization5 Conclusion
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Affiliation(s)
- Puying Luo
- Department of Obstetrics and Gynecology, Jiangxi Provincial People’s Hospital
| | - Fuqiang Gan
- Department of Obstetrics and Gynecology, Jiangxi Provincial People’s Hospital
| | - Junyue Lin
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry, Jiangxi Normal University
- College of Chemistry & Chemical Engineering, Jinganshan University
| | - Qiuping Ding
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry, Jiangxi Normal University
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9
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Iqbal Z, Joshi A, Ranjan De S. Recent Advancements on Transition‐Metal‐Catalyzed, Chelation‐Induced
ortho
‐Hydroxylation of Arenes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000762] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zafar Iqbal
- National Institute of Technology Uttarakhand Srinagar Garhwal Uttarakhand 246174 India
| | - Asha Joshi
- National Institute of Technology Uttarakhand Srinagar Garhwal Uttarakhand 246174 India
| | - Saroj Ranjan De
- National Institute of Technology Uttarakhand Srinagar Garhwal Uttarakhand 246174 India
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10
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Yun YL, Yang J, Miao YH, Sun J, Wang XJ. Recent advances in Palladium(II)-catalyzed activation of aromatic ring C–H bonds. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2020.01.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Ni Z, Mou C, Zhu X, Qi P, Yang S, Chi YR, Jin Z. Carbene-Catalyzed Formal [3+3] Cycloaddition Reaction for Access to Substituted 2-Phenylbenzothiazoles. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901773] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Zhibin Ni
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering; Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education; Guizhou University; 550025 Guiyang Huaxi District China
| | - Chengli Mou
- School of Pharmacy; Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education; Guizhou University of Traditional Chinese Medicine; 550025 Guiyang Huaxi District China
- Division of Chemistry & Biological Chemistry; School of Physical & Mathematical Sciences; Nanyang Technological University; 637371 Singapore Singapore
| | - Xun Zhu
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering; Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education; Guizhou University; 550025 Guiyang Huaxi District China
| | - Puying Qi
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering; Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education; Guizhou University; 550025 Guiyang Huaxi District China
| | - Song Yang
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering; Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education; Guizhou University; 550025 Guiyang Huaxi District China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering; Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education; Guizhou University; 550025 Guiyang Huaxi District China
- Division of Chemistry & Biological Chemistry; School of Physical & Mathematical Sciences; Nanyang Technological University; 637371 Singapore Singapore
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering; Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education; Guizhou University; 550025 Guiyang Huaxi District China
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12
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Saha D, Das P, Biswas P, Guin J. Synthesis of Phenolic Compounds via Palladium Catalyzed C−H Functionalization of Arenes. Chem Asian J 2019; 14:4534-4548. [DOI: 10.1002/asia.201901073] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/31/2019] [Indexed: 12/29/2022]
Affiliation(s)
- Debajyoti Saha
- Department of ChemistryKrishnagar Govt. College Krishnagar Nadia 741101 India
| | - Prasenjit Das
- School of Chemical SciencesIndian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
| | - Promita Biswas
- School of Chemical SciencesIndian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
| | - Joyram Guin
- School of Chemical SciencesIndian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
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13
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Liu D, Luo P, Ge J, Jiang Z, Peng Y, Ding Q. Synthesis of 2-Arylbenzothiazole and 2-Arylthiazole Derivatives via a Ru-Catalyzed meta-Selective C–H Nitration Reaction. J Org Chem 2019; 84:12784-12791. [DOI: 10.1021/acs.joc.9b01194] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Deming Liu
- Key Laboratory of Small Functional Organic Molecules, Ministry of Education and Jiangxi’s Key Laboratory of Green Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Puying Luo
- Department of Obstetrics and Gynecology, Jiangxi Provincial people’s Hospital, Nanchang, Jiangxi 330006, P. R. China
| | - Junying Ge
- Key Laboratory of Small Functional Organic Molecules, Ministry of Education and Jiangxi’s Key Laboratory of Green Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Zilin Jiang
- Key Laboratory of Small Functional Organic Molecules, Ministry of Education and Jiangxi’s Key Laboratory of Green Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Yiyuan Peng
- Key Laboratory of Small Functional Organic Molecules, Ministry of Education and Jiangxi’s Key Laboratory of Green Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Qiuping Ding
- Key Laboratory of Small Functional Organic Molecules, Ministry of Education and Jiangxi’s Key Laboratory of Green Chemistry, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
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14
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Affiliation(s)
- Shanshan Gao
- Materials Science and Chemical EngineeringNingbo University, Ningbo, P. R. China 315211
| | - Xing Xu
- Materials Science and Chemical EngineeringNingbo University, Ningbo, P. R. China 315211
| | - Hao Tang
- Materials Science and Chemical EngineeringNingbo University, Ningbo, P. R. China 315211
| | - Jia‐Qiang Wu
- School of Biotechnology and Health SciencesWuyi University, Jiangmen, P. R. China 529020
| | - Junfei Luo
- Materials Science and Chemical EngineeringNingbo University, Ningbo, P. R. China 315211
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15
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Dabiri M, Osmani C, Nikbakht R, Movahed SK. Palladium‐Catalyzed Regioselective C‐H Bond ortho‐Acetylation and Oxidative Homocoupling of N‐Arylcarbamates. ChemistrySelect 2019. [DOI: 10.1002/slct.201803053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Minoo Dabiri
- Faculty of Chemistry and Petroleum SciencesShahid Beheshti University Tehran Province Tehran, District 1, Daneshjou Boulevard 1983969411
| | - Chiman Osmani
- Faculty of Chemistry and Petroleum SciencesShahid Beheshti University Tehran Province Tehran, District 1, Daneshjou Boulevard 1983969411
| | - Roonak Nikbakht
- Faculty of Chemistry and Petroleum SciencesShahid Beheshti University Tehran Province Tehran, District 1, Daneshjou Boulevard 1983969411
| | - Siyavash Kazemi Movahed
- Faculty of Chemistry and Petroleum SciencesShahid Beheshti University Tehran Province Tehran, District 1, Daneshjou Boulevard 1983969411
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16
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Liu D, Ding Q, Fu Y, Song Z, Peng Y. Rh-Catalyzed C–H Amidation of 2-Arylbenzo[d]thiazoles: An Approach to Single Organic Molecule White Light Emitters in the Solid State. Org Lett 2019; 21:2523-2527. [DOI: 10.1021/acs.orglett.9b00115] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Deming Liu
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China
| | - Qiuping Ding
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China
| | - Yang Fu
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China
| | - Zhibin Song
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China
| | - Yiyuan Peng
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, Jiangxi Normal University, Nanchang, 330022, China
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17
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Wang F, Li X, Li Z, Zhou S, Zhang W. Copper Salts/TBAB-Catalyzed Chemo- and Regioselective β-C(sp 3)-H Acyloxylation of Aliphatic Amides. ACS OMEGA 2019; 4:331-343. [PMID: 31459332 PMCID: PMC6648367 DOI: 10.1021/acsomega.8b02430] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 12/25/2018] [Indexed: 06/10/2023]
Abstract
An efficient Cu(II)-catalyzed and tetrabutylammonium bromide (TBAB)-promoted strategy for highly regioselective and chemoselective C(sp3)-H acyloxylation of aliphatic amides is described. Acyloxylation occurs selectively at the β position with a broad substrate scope of carboxylic acids and aliphatic amides and good functional group compatibility. Notably, the competing reaction of intramolecular dehydrogenative amidation and intermolecular acyloxylation could be efficiently controlled by the amount of copper salt and the addition of TBAB. The intramolecular dehydrogenative amidation product was obtained in high yield when the amount of copper salts was increased. However, when TBAB was used as an additive, a preference for acyloxylation over intramolecular amidation was observed and the acyloxylated products were obtained in good yield. Preliminary studies were carried out to gain insights into the mechanism.
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Affiliation(s)
- Feifan Wang
- College
of Chemistry and Materials Science and Key Laboratory of Functional Molecular
Solids, Ministry of Education, Anhui Normal
University, Wuhu 241000, China
| | - Xiaoyue Li
- College
of Chemistry and Materials Science and Key Laboratory of Functional Molecular
Solids, Ministry of Education, Anhui Normal
University, Wuhu 241000, China
| | - Zhongyu Li
- College
of Chemistry and Materials Science and Key Laboratory of Functional Molecular
Solids, Ministry of Education, Anhui Normal
University, Wuhu 241000, China
| | - Shuangliu Zhou
- College
of Chemistry and Materials Science and Key Laboratory of Functional Molecular
Solids, Ministry of Education, Anhui Normal
University, Wuhu 241000, China
| | - Wu Zhang
- College
of Chemistry and Materials Science and Key Laboratory of Functional Molecular
Solids, Ministry of Education, Anhui Normal
University, Wuhu 241000, China
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18
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Gorjizadeh M, Sayyahi S. Solid Acid Supported on Magnetic Nanoparticles as a Highly Efficient and Retrievable Catalyst for the Synthesis 2-Substituted Benzothiazoles. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218090220] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Chen C, Pan Y, Zhao H, Xu X, Luo Z, Cao L, Xi S, Li H, Xu L. Ruthenium(II)-Catalyzed Regioselective C-8 Hydroxylation of 1,2,3,4-Tetrahydroquinolines. Org Lett 2018; 20:6799-6803. [PMID: 30351962 DOI: 10.1021/acs.orglett.8b02926] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ru(II)-catalyzed chelation-assisted highly regioselective C8-hydroxylation of 1,2,3,4-tretrahydroquinolines has been developed. Various 1,2,3,4-tetrahydroquinolines underwent smooth C8-H hydroxylation with cheap and safe K2S2O8 as the oxidant and oxygen source to furnish the corresponding products in good to excellent yields with high tolerance of the functional groups. The choice of a readily installable and removable N-pyrimidyl directing group is the key to catalysis. Mechanistic studies suggest the involvement of a six-membered ruthenacycle intermediate in the catalytic cycle. The method can also be extended to the direct hydroxylation of other (hetero)arene C-H bonds.
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Affiliation(s)
- Changjun Chen
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Yixiao Pan
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Haoqiang Zhao
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Xin Xu
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Zhenli Luo
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Lei Cao
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Siqi Xi
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Huanrong Li
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Lijin Xu
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
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20
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Stewart DJ, Kannan R, Grusenmeyer TA, Artz JM, Long SL, Yu Z, Cooper TM, Haley JE, Tan LS. Effects of intramolecular hydrogen bonding and sterically forced non-coplanarity on organic donor/acceptor two-photon-absorbing molecules. Phys Chem Chem Phys 2018; 20:19398-19407. [DOI: 10.1039/c8cp02647e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Excited-state decay rate constant is controlled by hydrogen bonding, which is switched from intramolecular to intermolecular by choice of solvent.
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Affiliation(s)
- David J. Stewart
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Ramamurthi Kannan
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Tod A. Grusenmeyer
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Jacob M. Artz
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Stephanie L. Long
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Zhenning Yu
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Thomas M. Cooper
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Joy E. Haley
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Loon-Seng Tan
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
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21
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Yang Z, Hu R, Li X, Wang X, Gu R, Han S. One-pot copper-catalyzed synthesis of 2-substituted benzothiazoles from 2-iodoanilines, benzyl chlorides and elemental sulfur. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Le Bras J, Muzart J. Dehydrogenative (Hetero)arene Alkoxylations Triggered by PdII
-Catalyzed C(sp2
)-H Activation and Coordinating Substituent: PdII,III
or PdIV
Complex as Key Intermediate? European J Org Chem 2017. [DOI: 10.1002/ejoc.201601592] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jean Le Bras
- Institut de Chimie Moléculaire de Reims, UMR 7312; CNRS - Université de Reims Champagne-Ardenne; B. P. 1039 51687 Reims Cedex 2 France
| | - Jacques Muzart
- Institut de Chimie Moléculaire de Reims, UMR 7312; CNRS - Université de Reims Champagne-Ardenne; B. P. 1039 51687 Reims Cedex 2 France
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23
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Liu Y, Liu S, Xiao Y. Transition-metal-catalyzed synthesis of phenols and aryl thiols. Beilstein J Org Chem 2017; 13:589-611. [PMID: 28405239 PMCID: PMC5372758 DOI: 10.3762/bjoc.13.58] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 03/09/2017] [Indexed: 12/28/2022] Open
Abstract
Phenols and aryl thiols are fundamental building blocks in organic synthesis and final products with interesting biological activities. Over the past decades, substantial progress has been made in transition-metal-catalyzed coupling reactions, which resulted in the emergence of new methods for the synthesis of phenols and aryl thiols. Aryl halides have been extensively studied as substrates for the synthesis of phenols and aryl thiols. In very recent years, C-H activation represents a powerful strategy for the construction of functionalized phenols directly from various arenes. However, the synthesis of aryl thiols through C-H activation has not been reported. In this review, a brief overview is given of the recent advances in synthetic strategies for both phenols and aryl thiols.
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Affiliation(s)
- Yajun Liu
- College of Life Science and Medicine, Dalian University of Technology, Panjin 124221, China
| | - Shasha Liu
- College of Life Science and Medicine, Dalian University of Technology, Panjin 124221, China
| | - Yan Xiao
- Department of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
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24
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Ru-catalyzed ortho-oxidative alkenylation of 2-arylbenzo[d]thiazoles in aqueous solution of anionic surfactant sodium dodecylbenzenesulfonate (SDBS). Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.12.050] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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25
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Guo Y, Yu KK, Xing LH, Liu HW, Wang W, Ji YF. Palladium-Catalyzed Divergent Regioselective Homocoupling and Hydroxylation of 3-Arylbenzo[d]isoxazoles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600853] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ying Guo
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Kun-Kun Yu
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Li-Hao Xing
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Hong-Wei Liu
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 People's Republic of China
| | - Wei Wang
- Department of Chemistry & Chemical Biology; University of New Mexico; MSC03 2060 Albuquerque NM 87131-0001 USA
| | - Ya-Fei Ji
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 People's Republic of China
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26
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Yu KK, Guo Y, Hu YH, Xu Z, Liu HW, Liao DH, Ji YF. Palladium-Catalyzed Diversemono-Acyloxylation of 5-Alkyl-4-aryl-thiazole-2-carboxylates. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600304] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Kun-Kun Yu
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Ying Guo
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Ya-Hua Hu
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Zhi Xu
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Hong-Wei Liu
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Dao-Hua Liao
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 P. R. China
| | - Ya-Fei Ji
- School of Pharmacy; East China University of Science & Technology; 130 Meilong Road Shanghai 200237 P. R. China
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27
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Ping Y, Ding Q, Chen Z, Peng Y. Substrate-assisted rhodium-catalyzed C H bond cyanation of 2-arylbenzothiazoles. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.04.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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28
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Ranjan Mohanta P, Banerjee A, Kumar Santra S, Behera A, Patel BK. Acylperoxycoumarins asortho-CH Acylating Agentviaa Palladium(II)-Catalyzed Redox-Neutral Process. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600258] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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29
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Sun YH, Sun TY, Wu YD, Zhang X, Rao Y. A diversity-oriented synthesis of bioactive benzanilides via a regioselective C(sp 2)-H hydroxylation strategy. Chem Sci 2016; 7:2229-2238. [PMID: 29910911 PMCID: PMC5975941 DOI: 10.1039/c5sc03905c] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 12/03/2015] [Indexed: 12/19/2022] Open
Abstract
A diversity-oriented synthesis of bioactive benzanilides via C(sp2)-H hydroxylation has been studied. Different regioselectivity was observed with Ru(ii) and Pd(ii) catalysts. The reaction demonstrates excellent regioselectivity, good tolerance of functional groups, and high yields. A wide range of ortho-hydroxylated-benzanilides can be readily synthesized with excellent regioselectivity via this new synthetic strategy. Computational investigations revealed that the regioselectivity was controlled mainly by both steric and electronic factors. Steric effects determine the regioselective outcomes in the Ru-catalyzed reaction, while electronic effects are dominant in the Pd-catalyzed reaction.
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Affiliation(s)
- Yong-Hui Sun
- MOE Key Laboratory of Protein Sciences , Department of Pharmacology and Pharmaceutical Sciences , School of Medicine and School of Life Sciences , Tsinghua University , Beijing 100084 , China .
| | - Tian-Yu Sun
- Lab of Computational Chemistry and Drug Design , Key Laboratory of Chemical Genomics , Peking University Shenzhen Graduate School , Shenzhen 518055 , China .
| | - Yun-Dong Wu
- Lab of Computational Chemistry and Drug Design , Key Laboratory of Chemical Genomics , Peking University Shenzhen Graduate School , Shenzhen 518055 , China .
- College of Chemistry , Peking University , Beijing 100871 , China
| | - Xinhao Zhang
- Lab of Computational Chemistry and Drug Design , Key Laboratory of Chemical Genomics , Peking University Shenzhen Graduate School , Shenzhen 518055 , China .
| | - Yu Rao
- MOE Key Laboratory of Protein Sciences , Department of Pharmacology and Pharmaceutical Sciences , School of Medicine and School of Life Sciences , Tsinghua University , Beijing 100084 , China .
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30
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Abstract
The preparation, structure, and chemistry of hypervalent iodine compounds are reviewed with emphasis on their synthetic application. Compounds of iodine possess reactivity similar to that of transition metals, but have the advantage of environmental sustainability and efficient utilization of natural resources. These compounds are widely used in organic synthesis as selective oxidants and environmentally friendly reagents. Synthetic uses of hypervalent iodine reagents in halogenation reactions, various oxidations, rearrangements, aminations, C-C bond-forming reactions, and transition metal-catalyzed reactions are summarized and discussed. Recent discovery of hypervalent catalytic systems and recyclable reagents, and the development of new enantioselective reactions using chiral hypervalent iodine compounds represent a particularly important achievement in the field of hypervalent iodine chemistry. One of the goals of this Review is to attract the attention of the scientific community as to the benefits of using hypervalent iodine compounds as an environmentally sustainable alternative to heavy metals.
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Affiliation(s)
- Akira Yoshimura
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
| | - Viktor V Zhdankin
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
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31
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Rhodium(III)-catalyzed heteroatom-directed C–H allylation with allylic phosphonates and allylic carbonates at room temperature. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.12.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Sarkar D, Gulevich AV, Melkonyan FS, Gevorgyan V. Synthesis of Multisubstituted Arenes via PyrDipSi-Directed Unsymmetrical Iterative C–H Functionalizations. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01724] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dhruba Sarkar
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Anton V. Gulevich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Ferdinand S. Melkonyan
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
| | - Vladimir Gevorgyan
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, United States
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33
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Liang YF, Wang X, Yuan Y, Liang Y, Li X, Jiao N. Ligand-Promoted Pd-Catalyzed Oxime Ether Directed C–H Hydroxylation of Arenes. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01700] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Yu-Feng Liang
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University,
School of Pharmaceutical Sciences, Peking University, Xue Yuan
Road 38, Beijing 100191, China
| | - Xiaoyang Wang
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University,
School of Pharmaceutical Sciences, Peking University, Xue Yuan
Road 38, Beijing 100191, China
| | - Yizhi Yuan
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University,
School of Pharmaceutical Sciences, Peking University, Xue Yuan
Road 38, Beijing 100191, China
| | - Yujie Liang
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University,
School of Pharmaceutical Sciences, Peking University, Xue Yuan
Road 38, Beijing 100191, China
| | - Xinyao Li
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University,
School of Pharmaceutical Sciences, Peking University, Xue Yuan
Road 38, Beijing 100191, China
| | - Ning Jiao
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University,
School of Pharmaceutical Sciences, Peking University, Xue Yuan
Road 38, Beijing 100191, China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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34
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Choi M, Park J, Mishra NK, Lee SY, Kim JH, Jeong KM, Lee J, Jung YH, Kim IS. Rh(III)-catalyzed C–H alkylation of 2-arylbenzothiazoles with α-diazo esters. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.06.036] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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35
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Du G, Zhu N, Hong H, Han L, Suo Q. Synthesis of Benzothiazoles by the Reaction of Disulfide and Aromatic Carboxylic Acid Promoted by PCL3 and DBU. PHOSPHORUS SULFUR 2015. [DOI: 10.1080/10426507.2014.978323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Guangyan Du
- Chemical Engineering College, Inner Mongolia University of Technology, Hohhot, P. R. China
| | - Ning Zhu
- Chemical Engineering College, Inner Mongolia University of Technology, Hohhot, P. R. China
| | - Hailong Hong
- Chemical Engineering College, Inner Mongolia University of Technology, Hohhot, P. R. China
| | - Limin Han
- Chemical Engineering College, Inner Mongolia University of Technology, Hohhot, P. R. China
| | - Quanling Suo
- Chemical Engineering College, Inner Mongolia University of Technology, Hohhot, P. R. China
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36
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Yamaguchi T, Yamaguchi E, Tada N, Itoh A. Directortho-Hydroxylation of 2-Phenylpyridines using Palladium(II) Chloride and Hydrogen Peroxide. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500061] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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37
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Rhodium-catalyzed ortho-selective C–H halogenation of 2-arylbenzo[d]thiazoles using N-halosuccinimides as halogen sources. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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38
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Dong J, Liu P, Sun P. Palladium-Catalyzed Aryl C(sp2)–H Bond Hydroxylation of 2-Arylpyridine Using TBHP as Oxidant. J Org Chem 2015; 80:2925-9. [DOI: 10.1021/acs.joc.5b00167] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jiawei Dong
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu
Provincial Key Laboratory of Material Cycle Processes and Pollution
Control, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China
| | - Ping Liu
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu
Provincial Key Laboratory of Material Cycle Processes and Pollution
Control, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Peipei Sun
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu
Provincial Key Laboratory of Material Cycle Processes and Pollution
Control, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
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39
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Ali W, Rout SK, Guin S, Modi A, Banerjee A, Patel BK. Copper-Catalyzed Cross Dehydrogenative Coupling ofN,N-Disubstituted Formamides and Phenols: A Direct Access to Carbamates. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400659] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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40
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Guntreddi T, Vanjari R, Singh KN. Elemental Sulfur Mediated Decarboxylative Redox Cyclization Reaction of o-Chloronitroarenes and Arylacetic Acids. Org Lett 2015; 17:976-8. [DOI: 10.1021/acs.orglett.5b00079] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Tirumaleswararao Guntreddi
- Department of Chemistry (Centre
of Advanced Study), Faculty of Science, Banaras Hindu University, Varanasi-221005, India
| | - Rajeshwer Vanjari
- Department of Chemistry (Centre
of Advanced Study), Faculty of Science, Banaras Hindu University, Varanasi-221005, India
| | - Krishna Nand Singh
- Department of Chemistry (Centre
of Advanced Study), Faculty of Science, Banaras Hindu University, Varanasi-221005, India
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41
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Santra SK, Banerjee A, Khatun N, Samanta A, Patel BK. Palladium catalyzed ortho-halogenation of 2-arylbenzothiazole and 2,3-diarylquinoxaline. RSC Adv 2015. [DOI: 10.1039/c4ra15461d] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A Pd-catalysed mono and di-o-halogenation strategy has been demonstrated selectively using benzothiazoles and quinoxalines as the directing substrates.
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Affiliation(s)
| | - Arghya Banerjee
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
| | - Nilufa Khatun
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
| | - Asim Samanta
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
| | - Bhisma K. Patel
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
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42
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Seth K, Nautiyal M, Purohit P, Parikh N, Chakraborti AK. Palladium catalyzed Csp2–H activation for direct aryl hydroxylation: the unprecedented role of 1,4-dioxane as a source of hydroxyl radicals. Chem Commun (Camb) 2015; 51:191-4. [DOI: 10.1039/c4cc06864e] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Direct aryl hydroxylation has been achieved via palladium-catalysed Csp2–H activation using versatile directing groups through unprecedented hydroxyl transfer from 1,4-dioxane.
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Affiliation(s)
- Kapileswar Seth
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- India
| | - Manesh Nautiyal
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- India
| | - Priyank Purohit
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- India
| | - Naisargee Parikh
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- India
| | - Asit K. Chakraborti
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- India
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43
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Santra SK, Banerjee A, Khatun N, Patel BK. Ceric Ammonium Nitrate (CAN) Promoted PdII-Catalyzed Substrate-Directedo-Benzoxylation and Decarboxylativeo-Aroylation. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403367] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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44
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Khatun N, Banerjee A, Santra SK, Behera A, Patel BK. Pd(ii)-catalysed o-aroylation of directing arenes using terminal aryl alkenes and alkynes. RSC Adv 2014. [DOI: 10.1039/c4ra11014e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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45
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Palladium-catalyzed chelation-assisted ortho-tetra-acetoxylation of 1,3-diarylpyrazoles and 1,3-diarylindazoles. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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46
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Rout SK, Guin S, Gogoi A, Majji G, Patel BK. Terminal Aryl Alkenes and Alkynes as Arylcarboxy Surrogates toward o-Benzoxylation of 2-Phenylpyridine Catalyzed by Copper. Org Lett 2014; 16:1614-7. [DOI: 10.1021/ol500224e] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Saroj Kumar Rout
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati-781039, India
| | - Srimanta Guin
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati-781039, India
| | - Anupal Gogoi
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati-781039, India
| | - Ganesh Majji
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati-781039, India
| | - Bhisma K. Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati-781039, India
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47
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Banerjee A, Bera A, Santra SK, Guin S, Patel BK. Palladium-catalysed regioselective aroylation and acetoxylation of 3,5-diarylisoxazole via ortho C–H functionalisations. RSC Adv 2014. [DOI: 10.1039/c3ra45403g] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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48
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Thirunavukkarasu VS, Kozhushkov SI, Ackermann L. C–H nitrogenation and oxygenation by ruthenium catalysis. Chem Commun (Camb) 2014; 50:29-39. [DOI: 10.1039/c3cc47028h] [Citation(s) in RCA: 342] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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49
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Kamal A, Srinivasulu V, Sathish M, Tangella Y, Nayak VL, Rao MPN, Shankaraiah N, Nagesh N. Palladium-Catalyzed Aryl CH Activation and Tandemortho-Hydroxylation/Alkoxylation of 2-Aryl Benzimidazoles: Cytotoxicity and DNA-Binding Studies. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300214] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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