1
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Recyclable Cu(I)-catalyzed cascade cyclization between o-haloanilides and primary amines towards 1,2-disubstituted benzimidazoles. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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2
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Design, synthesis and in vitro antiproliferation activity of some 2-aryl and -heteroaryl benzoxazole derivatives. Future Med Chem 2022; 14:1027-1048. [PMID: 35703122 DOI: 10.4155/fmc-2022-0076] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background: Phortress produces reactive electrophilic metabolites that form DNA adducts only in sensitive tumor cells. The authors converted the 2-phenylbenzothiazole nucleus in phortress to 2-aryl and -heteroaryl benzoxazole derivatives (11 new and 14 resynthesized). All synthesized compounds were studied for antitumor activity in various cancer cells. Materials & methods: Cytotoxicity, cell morphology, flow cytometry and cell-cycle analyses of compounds were performed and more active derivatives were tested in the MCF-7 cell line. Conclusion: Methyl 2-(thiophen-2-yl)benzo[d]oxazole-6-carboxylate (BK89) has a higher effect than fluorouracil to induce apoptotic cell death (apoptosis value of 49.44%). Cell-cycle analysis shows that the compounds BK89 and methyl 2-(furan-2-yl)benzo[d]oxazole-6-carboxylate (BK82) can be used as potential cell-cycle blockers by arresting MCF-7 cells in G0/G1 phase at rates of 63% and 85%, respectively.
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3
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Tocco G, Laus A, Caboni P. Mukaiyama reagent: An efficient reaction mediator for rapid synthesis of 1,2-disubstituted-1H-benzo[d]imidazoles. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Nasrollahzadeh M, Motahharifar N, Sajjadi M, Naserimanesh A, Shokouhimehr M. Functionalization of chitosan by grafting Cu(II)-5-amino-1H-tetrazole complex as a magnetically recyclable catalyst for C-N coupling reaction. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2021.109135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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5
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Synthesis and DFT studies of 1,2-disubstituted benzimidazoles using expeditious and magnetically recoverable CoFe2O4/Cu(OH)2 nanocomposite under solvent-free condition. JOURNAL OF SAUDI CHEMICAL SOCIETY 2021. [DOI: 10.1016/j.jscs.2021.101394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Chen F, Zhu C, Yang Z, Liu C, Zeng H, Wu W, Jiang H. C–H Amination Enabled [2+1+1+1] Annulation Reaction in Water: Access to Benzoxazoles. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fulin Chen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Zhiyi Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Chi Liu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Hao Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
- State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 P. R. China
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Nguyen HT, Nguyen TH, Pham DD, Nguyen CT, Tran PH. A green approach for the synthesis of 2-substituted benzoxazoles and benzothiazoles via coupling/cyclization reactions. Heliyon 2021; 7:e08309. [PMID: 34820534 PMCID: PMC8601991 DOI: 10.1016/j.heliyon.2021.e08309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/10/2021] [Accepted: 10/29/2021] [Indexed: 11/20/2022] Open
Abstract
We have developed the green method for the synthesis of benzoxazoles and benzothiazoles with moderate to good yields using imidazolium chlorozincate (II) ionic liquid supported into Fe3O4 nanoparticles (LAIL@MNP) under solvent-free sonication. The reaction was performed under mild conditions and only produced water as a sole byproduct. The reactions under solvent-free sonication showed advantages of faster reaction rate (30 min) and high yields of the products (up to 90%). Moreover, the LAIL@MNP material was easily separated from the reaction mixture and can be recycled for five consecutive runs with a slight decrease in its catalytic performance (from 82 to 73%).
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Affiliation(s)
- Hai Truong Nguyen
- Department of Organic Chemistry, Faculty of Chemistry, University of Science, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
| | - Trinh Hao Nguyen
- Department of Organic Chemistry, Faculty of Chemistry, University of Science, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
| | - Dung Duc Pham
- Faculty of Chemistry, Ho Chi Minh City University of Education, Viet Nam
| | - Cong Tien Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Viet Nam
| | - Phuong Hoang Tran
- Department of Organic Chemistry, Faculty of Chemistry, University of Science, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
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8
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Exploration of Cu-catalyzed regioselective hydrodehalogenation of o-haloanilides using EtOH as hydrogen source. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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9
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Chen F, Zhu C, Jiang H. [3+1+1] Annulation Reaction of Benzo‐1,2‐Quinones, Aldehydes and Hydroxylamine Hydrochloride: Access to Benzoxazoles with Inorganic Nitrogen Source. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001521] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Fulin Chen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 People's Republic of China
| | - Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 People's Republic of China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University) Lanzhou 730000 People's Republic of China
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10
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Tang YL, Li ML, Gao JC, Sun Y, Qu L, Huang F, Mao ZW. Copper-catalyzed regioselective 2-amination of o-haloanilides with aqueous ammonia. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Mamedov VA, Zhukova NA. Recent Developments Towards Synthesis of (Het)arylbenzimidazoles. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0037-1610767] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
AbstractBenzimidazole is an important heterocycle that is widely researched and utilized by the pharmaceutical industry and is one of the five most commonly used five-membered aromatic heterocyclic compounds approved by the US Food and Drug Administration. In view of their wide-ranging bioactivities, systems containing benzimidazole as one of the moieties occupy a special place among other benzimidazole derivatives. Since 2010, many improved synthetic strategies have been developed for the construction of hetaryl- and arylbenzimidazole molecular scaffolds under environmentally benign conditions. This review emphasizes the recent trends and modifications frequently used in the synthesis of derivatives of benzimidazole such as the Phillips–Ladenburg and Weidenhagen reactions, as well as entirely new methods of synthesis, involving oxidative cyclization, cross-coupling, ring distortion strategy, and rearrangements carried out under environmentally benign conditions.1 Introduction2 From 1,2-Diaminobenzenes with Various One-Carbon Unit Suppliers2.1 Phillips–Ladenburg Reaction2.1.1 With (Het)arenecarboxylic Acids2.2.2 With (Het)arenecarboxylic Acid Derivatives2.2 Weidenhagen Reaction2.2.1 With (Het)arenecarbaldehydes or (Het)aryl Methyl Ketones2.2.2 With Primary Alcohols2.2.3 With Primary Alkylamines2.2.4 With 2-Methylazaarenes2.2.5 With Other One-Carbon Fragment Suppliers3 From 2-Haloacetanilides and Amines4 From Amidines5 From Tetrahydroquinazolines6 Mamedov Rearrangement7 Conclusions and Outlook
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12
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Dhawale KD, Ingale AP, Shinde SV, Thorat NM, Patil LR. ZnO-NPs catalyzed condensation of 2-aminothiophenol and aryl/alkyl nitriles: Efficient green synthesis of 2-substituted benzothiazoles. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1894577] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Kiran D. Dhawale
- Department of Chemistry, Rao Bahadur Narayan Borawake College, Ahmednagar, India
| | - Ajit P. Ingale
- Department of Chemistry, Dada Patil College, Ahmednagar, India
| | | | - Nitin M. Thorat
- Department of Chemistry, Maharaja Jivajirao Shinde College, Ahmednagar, India
| | - Limbraj R. Patil
- Department of Chemistry, Maharaja Jivajirao Shinde College, Ahmednagar, India
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13
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Li M, Li M, Tang Y, Sun Y, Qu L, Mao Z. Cu(II)/Vasicine Promoted Intramolecular C-O Formation: Synthesis of Benzoxazoles in EtOH. Curr Org Synth 2020; 18:310-315. [PMID: 33167843 DOI: 10.2174/1570179417666201109151752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 10/12/2020] [Accepted: 10/15/2020] [Indexed: 11/22/2022]
Abstract
AIMS AND OBJECTIVES Benzoxazoles are valuable bicyclic aromatic compounds; the construction of benzoxazoles via C-O cross-coupling reactions has attracted more and more attention. MATERIALS AND METHODS The best condition of C-O bond formation from o-haloanilides was carried out, taking Cu(OTf)2 (5 mol%) and vasicine (10 mol%) as the catalysts in EtOH in the presence of K2CO3 (2 eq.) for 12 h at 90°C. RESULTS A series of 2-substituted benzoxazoles have been prepared in high yields from 2-bromoanilides and 2- iodioanilides under mild conditions. CONCLUSION We have developed an efficient Cu-vasicine catalytic system for intramolecular C-O bond formation. This strategy is applicable to the synthesis of a wide variety of 2-substituted benzoxazoles by intramolecular O-arylation of o-haloanilides.
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Affiliation(s)
- Minxin Li
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, China
| | - Meiling Li
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, China
| | - Yanling Tang
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, China
| | - Yun Sun
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, China
| | - Lu Qu
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, China
| | - Zewei Mao
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, China
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14
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Nano indium oxide-catalyzed domino reaction for the synthesis of N-alkoxylated benzimidazoles. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152177] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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15
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Boddapati SNM, Tamminana R, Gollapudi RK, Nurbasha S, Assal ME, Alduhaish O, Siddiqui MRH, Bollikolla HB, Adil SF. Copper-Promoted One-Pot Approach: Synthesis of Benzimidazoles. Molecules 2020; 25:molecules25081788. [PMID: 32295143 PMCID: PMC7221555 DOI: 10.3390/molecules25081788] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/06/2020] [Accepted: 04/09/2020] [Indexed: 01/31/2023] Open
Abstract
A facile, one-pot, and proficient method was developed for the production of various 2-arylaminobenzimidazoles. This methodology is based for the first time on a copper catalyst promoted domino C-N cross-coupling reaction for the generation of 2-arylaminobenzimidazoles. Mechanistic investigations revealed that the synthetic pathway involves a copper-based desulphurization/nucleophilic substitution and a subsequent domino intra and intermolecular C-N cross-coupling reactions. Some of the issues typically encountered during the synthesis of 2-arylaminobezimidazoles, including the use of expensive catalytic systems and the low reactivity of bromo precursors, were addressed using this newly developed copper-catalyzed method. The reaction procedure is simple, generally with excellent substrate tolerance, and provides good to high yields of the desired products.
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Affiliation(s)
- S. N. Murthy Boddapati
- Department of Chemistry, Acharya Nagarjuna University, Guntur, Andhar Pradesh 522510, India; (S.N.M.B.); (R.K.G.); (S.N.)
- Department of Chemistry, Sir C. R. Reddy College, PG Courses, Eluru, Andhra Pradesh 534002, India
| | - Ramana Tamminana
- Department of Chemistry, GITAM Deemed to Be University, Bengaluru Campus, Karnataka 562163, India;
| | - Ravi Kumar Gollapudi
- Department of Chemistry, Acharya Nagarjuna University, Guntur, Andhar Pradesh 522510, India; (S.N.M.B.); (R.K.G.); (S.N.)
| | - Sharmila Nurbasha
- Department of Chemistry, Acharya Nagarjuna University, Guntur, Andhar Pradesh 522510, India; (S.N.M.B.); (R.K.G.); (S.N.)
| | - Mohamed E. Assal
- Department of Chemistry, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia; (M.E.A.); (M.R.H.S.)
| | - Osamah Alduhaish
- Department of Chemistry, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia; (M.E.A.); (M.R.H.S.)
- Correspondence: (O.A.); (H.B.B.); (S.F.A.)
| | - Mohammed Rafiq H. Siddiqui
- Department of Chemistry, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia; (M.E.A.); (M.R.H.S.)
| | - Hari Babu Bollikolla
- Department of Chemistry, Acharya Nagarjuna University, Guntur, Andhar Pradesh 522510, India; (S.N.M.B.); (R.K.G.); (S.N.)
- Correspondence: (O.A.); (H.B.B.); (S.F.A.)
| | - Syed Farooq Adil
- Department of Chemistry, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia; (M.E.A.); (M.R.H.S.)
- Correspondence: (O.A.); (H.B.B.); (S.F.A.)
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16
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Tang Y, Li M, Gao H, Rao G, Mao Z. Efficient Cu-catalyzed intramolecular O-arylation for synthesis of benzoxazoles in water. RSC Adv 2020; 10:14317-14321. [PMID: 35498497 PMCID: PMC9051899 DOI: 10.1039/d0ra00570c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 03/28/2020] [Indexed: 12/28/2022] Open
Abstract
An efficient method was developed for synthesis of benzoxazoles by Cu-catalyzed intramolecular O-arylation of o-halobenzanilides in water. This strategy provides several advantages, such as high yields, water as a green solvent and functional groups tolerance. An efficient method was developed for synthesis of benzoxazoles by Cu-catalyzed intramolecular O-arylation of o-halobenzanilides in water.![]()
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Affiliation(s)
- Yanling Tang
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine Kunming 650500 P.R. China +86 871 65918232 +86 871 65918232
| | - Minxin Li
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine Kunming 650500 P.R. China +86 871 65918232 +86 871 65918232
| | - Hui Gao
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine Kunming 650500 P.R. China +86 871 65918232 +86 871 65918232
| | - Gaoxiong Rao
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine Kunming 650500 P.R. China +86 871 65918232 +86 871 65918232
| | - Zewei Mao
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine Kunming 650500 P.R. China +86 871 65918232 +86 871 65918232
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17
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Begunov RS, Fakhrutdinov AN, Sokolov AA. Recyclization‐Isomerization in the Reduction of 1‐(2‐Nitro(het)aryl)benzimidazoles. ChemistrySelect 2020. [DOI: 10.1002/slct.201904898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Roman S. Begunov
- Department of ChemistryP. G. Demidov Yaroslavl State University 14 ul.Sovetskaya Yaroslavl 150003 Russian Federation
| | - Artyom N. Fakhrutdinov
- N. D. Zelinsky Institute of Organic ChemistryRussian Academy of Sciences 47 LeninskyProsp. Moscow 119991 Russian Federation
| | - Aleksandr A. Sokolov
- Department of ChemistryP. G. Demidov Yaroslavl State University 14 ul.Sovetskaya Yaroslavl 150003 Russian Federation
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18
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Nykaza TV, Li G, Yang J, Luzung MR, Radosevich AT. P
III
/P
V
=O Catalyzed Cascade Synthesis of N‐Functionalized Azaheterocycles. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Trevor V. Nykaza
- Department of ChemistryMassachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Gen Li
- Department of ChemistryMassachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Junyu Yang
- Department of ChemistryMassachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
| | | | - Alexander T. Radosevich
- Department of ChemistryMassachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
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19
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Boddapati S, Saketi JMR, Mutchu BR, Bollikolla HB, Adil SF, Khan M. Copper promoted desulfurization and C-N cross coupling reactions: Simple approach to the synthesis of substituted 2-aminobenzoxazoles and 2,5-disubstituted tetrazole amines. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2019.09.001] [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] Open
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20
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Nykaza TV, Li G, Yang J, Luzung MR, Radosevich AT. P III /P V =O Catalyzed Cascade Synthesis of N-Functionalized Azaheterocycles. Angew Chem Int Ed Engl 2020; 59:4505-4510. [PMID: 31869510 DOI: 10.1002/anie.201914851] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 12/12/2019] [Indexed: 12/19/2022]
Abstract
An organocatalytic method for the modular synthesis of diverse N-aryl and N-alkyl azaheterocycles (indoles, oxindoles, benzimidazoles, and quinoxalinediones) is reported. The method employs a small-ring organophosphorus-based catalyst (1,2,2,3,4,4-hexamethylphosphetane P-oxide) and a hydrosilane reductant to drive the conversion of ortho-functionalized nitroarenes into azaheterocycles through sequential intermolecular reductive C-N cross coupling with boronic acids, followed by intramolecular cyclization. This method enables the rapid construction of azaheterocycles from readily available building blocks, including a regiospecific approach to N-substituted benzimidazoles and quinoxalinediones.
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Affiliation(s)
- Trevor V Nykaza
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Gen Li
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Junyu Yang
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Michael R Luzung
- Kallyope Inc., 430 E. 29th St., Suite 1050, New York, NY, 10016, USA
| | - Alexander T Radosevich
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
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21
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Thapa P, Palacios PM, Tran T, Pierce BS, Foss FW. 1,2-Disubstituted Benzimidazoles by the Iron Catalyzed Cross-Dehydrogenative Coupling of Isomeric o-Phenylenediamine Substrates. J Org Chem 2020; 85:1991-2009. [PMID: 31928002 DOI: 10.1021/acs.joc.9b02714] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Benzimidazoles are common in nature, medicines, and materials. Numerous strategies for preparing 2-arylbenzimidazoles exist. In this work, 1,2-disubstituted benzimidazoles were prepared from various mono- and disubstituted ortho-phenylenediamines (OPD) by iron-catalyzed oxidative coupling. Specifically, O2 and FeCl3·6H2O catalyzed the cross-dehydrogenative coupling and aromatization of diarylmethyl and dialkyl benzimidazole precursors. N,N'-Disubstituted-OPD substrates were significantly more reactive than their N,N-disubstituted isomers, which appears to be relative to their propensity for complexation and charge transfer with Fe3+. The reaction also converted N-monosubstituted OPD substrates to 2-substituted benzimidazoles; however, electron-poor substrates produce 1,2-disubstituted benzimidazoles by intermolecular imino-transfer. Kinetic, reagent, and spectroscopic (UV-vis and EPR) studies suggest a mechanism involving metal-substrate complexation, charge transfer, and aerobic turnover, involving high-valent Fe(IV) intermediates. Overall, comparative strategies for the relatively sustainable and efficient synthesis of 1,2-disubstituted benzimidazoles are demonstrated.
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Affiliation(s)
- Pawan Thapa
- Department of Chemistry and Biochemistry , The University of Texas Arlington , Arlington , Texas 76019-0065 , United States
| | - Philip M Palacios
- Department of Chemistry and Biochemistry , The University of Texas Arlington , Arlington , Texas 76019-0065 , United States
| | - Tam Tran
- Department of Chemistry and Biochemistry , The University of Texas Arlington , Arlington , Texas 76019-0065 , United States
| | - Brad S Pierce
- Department of Chemistry and Biochemistry , The University of Alabama , Tuscaloosa , Alabama 35487 , United States
| | - Frank W Foss
- Department of Chemistry and Biochemistry , The University of Texas Arlington , Arlington , Texas 76019-0065 , United States
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22
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CoII Immobilized on Aminated Magnetic-Based Metal–Organic Framework: An Efficient Heterogeneous Nanostructured Catalyst for the C–O Cross-Coupling Reaction in Solvent-Free Conditions. Catal Letters 2020. [DOI: 10.1007/s10562-019-03070-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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23
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Zhang Y, Ji M. Iodine Promoted One-Pot Synthesis of 2-Aryl Benzoxazoles from Amidoximes via Oxidative Cyclization and Ring Contraction. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901468] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yong Zhang
- School of Biological Science and Medical Engineering; Southeast University; Dingjiaqiao 87 210009 Nanjing China
| | - Min Ji
- School of Biological Science and Medical Engineering; Southeast University; Dingjiaqiao 87 210009 Nanjing China
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24
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Shi Y, Zhou Q, Du F, Fu Y, Du Y, Fang T, Chen G. Iridium-catalyzed intramolecular C N and C O/S cross-coupling reactions: Preparation of benzoazole derivatives. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Singh M, Bose P, Singh AS, Tiwari VK. 1‐(Hydroxymethyl)‐1
H
‐benzotriazole: An Efficient Ligand for Copper‐Catalyzed Ullmann‐Type Coupling Reaction Leading to Expeditious Synthesis of Diverse Benzoxazoles and Benzothiazoles. ChemistrySelect 2019. [DOI: 10.1002/slct.201902420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mala Singh
- Department of ChemistryInstitute of ScienceBanaras Hindu University, Varansi Uttar Pradesh-221005 INDIA
| | - Priyanka Bose
- Department of ChemistryInstitute of ScienceBanaras Hindu University, Varansi Uttar Pradesh-221005 INDIA
| | - Anoop S. Singh
- Department of ChemistryInstitute of ScienceBanaras Hindu University, Varansi Uttar Pradesh-221005 INDIA
| | - Vinod K. Tiwari
- Department of ChemistryInstitute of ScienceBanaras Hindu University, Varansi Uttar Pradesh-221005 INDIA
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26
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Sikari R, Sinha S, Chakraborty G, Das S, Leest NP, Paul ND. C−N Cross‐Coupling Reactions Under Mild Conditions Using Singlet Di‐Radical Nickel(II)‐Complexes as Catalyst: N‐Arylation and Quinazoline Synthesis. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900545] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Rina Sikari
- Department of ChemistryIndian Institute of Engineering Science and Technology, Shibpur, Botanic Garden Howrah 711103 India
| | - Suman Sinha
- Department of ChemistryIndian Institute of Engineering Science and Technology, Shibpur, Botanic Garden Howrah 711103 India
| | - Gargi Chakraborty
- Department of ChemistryIndian Institute of Engineering Science and Technology, Shibpur, Botanic Garden Howrah 711103 India
| | - Siuli Das
- Department of ChemistryIndian Institute of Engineering Science and Technology, Shibpur, Botanic Garden Howrah 711103 India
| | - Nicolaas Petrus Leest
- Homogeneous Catalysis Group, van't Hoff Institute for Molecular SciencesUniversity of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Nanda D. Paul
- Department of ChemistryIndian Institute of Engineering Science and Technology, Shibpur, Botanic Garden Howrah 711103 India
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27
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Luo Z, Wu H, Li Y, Chen Y, Nie J, Lu S, Zhu Y, Zeng Z. Cesium Fluoride and Copper‐Catalyzed One‐Pot Synthesis of Benzoxazoles
via
a Site‐Selective Amide C−N Bond Cleavage. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900485] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Zhongfeng Luo
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Hongxiang Wu
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Yue Li
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Yuwen Chen
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Jingyi Nie
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Siqi Lu
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Yulin Zhu
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Zhuo Zeng
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry Chinese Academy of Science 345 Lingling Road Shanghai 200032 People's Republic of China
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28
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Shaik BV, Seelam M, Tamminana R, Kammela PR. Copper promoted C-S and C-N cross-coupling Reactions:The synthesis of 2-(N-Aryolamino)benzothiazoles and 2-(N-Aryolamino)benzimidazoles. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.05.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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29
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Abd El‐Lateef HM, Sayed AR, Adam MSS. Sulfonated salicylidene thiadiazole complexes with Co (II) and Ni (II) ions as sustainable corrosion inhibitors and catalysts for cross coupling reaction. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4987] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Hany M. Abd El‐Lateef
- Department of Chemistry, College of ScienceKing Faisal University P.O. Box 380 Al Hufuf 31982 Al Hassa Saudi Arabia
- Chemistry Department, Faculty of ScienceSohag University Sohag 82534 Egypt
| | - Abdelwahed R. Sayed
- Department of Chemistry, College of ScienceKing Faisal University P.O. Box 380 Al Hufuf 31982 Al Hassa Saudi Arabia
- Department of Chemistry, Faculty of ScienceUniversity of Beni Suef Egypt
| | - Mohamed Shaker S. Adam
- Department of Chemistry, College of ScienceKing Faisal University P.O. Box 380 Al Hufuf 31982 Al Hassa Saudi Arabia
- Chemistry Department, Faculty of ScienceSohag University Sohag 82534 Egypt
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30
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Oshimoto K, Tsuji H, Kawatsura M. Synthesis of benzoxazoles via the copper-catalyzed hydroamination of alkynones with 2-aminophenols. Org Biomol Chem 2019; 17:4225-4229. [DOI: 10.1039/c9ob00572b] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe herein the synthetic method to benzoxazole derivatives via the copper-catalyzed hydroamination of alkynones with 2-aminophenols.
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Affiliation(s)
- Kohei Oshimoto
- Department of Chemistry
- College of Humanities & Sciences
- Nihon University
- Tokyo 156-8550
- Japan
| | - Hiroaki Tsuji
- Department of Chemistry
- College of Humanities & Sciences
- Nihon University
- Tokyo 156-8550
- Japan
| | - Motoi Kawatsura
- Department of Chemistry
- College of Humanities & Sciences
- Nihon University
- Tokyo 156-8550
- Japan
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31
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Mohammadinezhad A, Akhlaghinia B. CoII immobilized on an aminated magnetic metal–organic framework catalyzed C–N and C–S bond forming reactions: a journey for the mild and efficient synthesis of arylamines and arylsulfides. NEW J CHEM 2019. [DOI: 10.1039/c9nj03400e] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The catalytic activity of Fe3O4@AMCA-MIL53(Al)-NH2-CoII NPs as a novel and inexpensive catalyst was investigated in the C–N and C–S cross coupling reactions.
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Affiliation(s)
- Arezou Mohammadinezhad
- Department of Chemistry
- Faculty of Science
- Ferdowsi University of Mashhad
- Mashhad 9177948974
- Iran
| | - Batool Akhlaghinia
- Department of Chemistry
- Faculty of Science
- Ferdowsi University of Mashhad
- Mashhad 9177948974
- Iran
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32
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Ma D, Ji X, Wu Z, Cheng C, Zhou B, Zhang Y. Synthesis of Benzimidazoles through Palladium-Catalyzed Amination of 2-Iodobenzimines with Diaziridinone. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801367] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ding Ma
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability; Tongji University; 1239 Siping Road Shanghai 200092 People's Republic of China
| | - Xiaoming Ji
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability; Tongji University; 1239 Siping Road Shanghai 200092 People's Republic of China
| | - Zhuo Wu
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability; Tongji University; 1239 Siping Road Shanghai 200092 People's Republic of China
| | - Cang Cheng
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability; Tongji University; 1239 Siping Road Shanghai 200092 People's Republic of China
| | - Bo Zhou
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability; Tongji University; 1239 Siping Road Shanghai 200092 People's Republic of China
| | - Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability; Tongji University; 1239 Siping Road Shanghai 200092 People's Republic of China
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33
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Panda N, Sahoo K. Synthesis of 4‐Alkenyl Benzoxazoles via Pd‐catalyzed
ortho
C−H Functionalization of 2‐Amidophenols. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801272] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Niranjan Panda
- Department of ChemistryNational Institute of Technology Rourkela Odisha- 769008 India
| | - Kanchanbala Sahoo
- Department of ChemistryNational Institute of Technology Rourkela Odisha- 769008 India
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34
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Tangellamudi ND, Shinde SB, Pooladanda V, Godugu C, Balasubramanian S. Facile synthesis of 2-aryl 5-hydroxy benzo[d]oxazoles and their in vitro anti-proliferative effects on various cancer cell lines. Bioorg Med Chem Lett 2018; 28:3639-3647. [DOI: 10.1016/j.bmcl.2018.10.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/20/2018] [Accepted: 10/24/2018] [Indexed: 10/28/2022]
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35
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Kondraganti L, Manabolu SB, Dittakavi R. Synthesis of Benzimidazoles
via
Domino Intra and Intermolecular
C‐N
Cross‐Coupling Reaction. ChemistrySelect 2018. [DOI: 10.1002/slct.201802754] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lakshmi Kondraganti
- Department of ChemistryJawaharlal Nehru Technological University Kakinada Kakinada- 533 003 Andhra Pradesh India
| | - Surendra babu Manabolu
- Department of ChemistryInstitution: GITAM School of Technology, GITAM University HTP campus, Rudraram, Medak 502 329 Telangana India
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36
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37
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Tang L, Yang Z, Sun T, Zhang D, Ma X, Rao W, Zhou Y. Unexpected Decarboxylation-Triggered o
-Hydroxyl-Controlled Redox Condensation of Phenylglycines with 2-Nitrophenols in Aqueous Media. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800586] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Lin Tang
- College of Chemistry and Chemical Engineering; Xinyang Normal University; Xinyang Henan 464000 People's Republic of China
- Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the Sourth of Henan; Xinyang Henan 464000 People's Republic of China
| | - Zhen Yang
- College of Chemistry and Chemical Engineering; Xinyang Normal University; Xinyang Henan 464000 People's Republic of China
| | - Tian Sun
- College of Chemistry and Chemical Engineering; Xinyang Normal University; Xinyang Henan 464000 People's Republic of China
| | - Di Zhang
- College of Chemistry and Chemical Engineering; Xinyang Normal University; Xinyang Henan 464000 People's Republic of China
| | - Xiantao Ma
- College of Chemistry and Chemical Engineering; Xinyang Normal University; Xinyang Henan 464000 People's Republic of China
| | - Weihao Rao
- College of Chemistry and Chemical Engineering; Xinyang Normal University; Xinyang Henan 464000 People's Republic of China
| | - Yuqiang Zhou
- College of Chemistry and Chemical Engineering; Xinyang Normal University; Xinyang Henan 464000 People's Republic of China
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38
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39
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Krishnan KK, Harry NA, Ujwaldev SM, Anilkumar G. Zinc-Catalyzed Etherification Reaction of Aryl Iodides with Phenols. ChemistrySelect 2018. [DOI: 10.1002/slct.201800541] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- K. Keerthi Krishnan
- School of Chemical Sciences; Mahatma Gandhi University; PD Hills P O; Kottayam, Kerala INDIA 686560
| | - Nissy Ann Harry
- School of Chemical Sciences; Mahatma Gandhi University; PD Hills P O; Kottayam, Kerala INDIA 686560
| | | | - Gopinathan Anilkumar
- School of Chemical Sciences; Mahatma Gandhi University; PD Hills P O; Kottayam, Kerala INDIA 686560
- Advanced Molecular Materials Research Centre (AMMRC); Mahatma Gandhi University; PD Hills P O.; Kottayam, Kerala, INDIA, 686560
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40
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Yang B, Hu W, Zhang S. Synthesis of benzoxazoles via an iron-catalyzed domino C-N/C-O cross-coupling reaction. RSC Adv 2018; 8:2267-2270. [PMID: 35541485 PMCID: PMC9077259 DOI: 10.1039/c7ra13080e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 12/29/2017] [Indexed: 01/19/2023] Open
Abstract
An eco-friendly and efficient method has been developed for the synthesis of 2-arylbenzoxazoles via a domino iron-catalyzed C–N/C–O cross-coupling reaction. Some of the issues typically encountered during the synthesis of 2-arylbenzoxazoles in the presence of palladium and copper catalysts, including poor substrate scope and long reaction times have been addressed using this newly developed iron-catalyzed method. The synthesis of benzoxazoles via an iron-catalyzed cascade C–N and C–O coupling is described.![]()
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Affiliation(s)
- Bo Yang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Weiye Hu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Songlin Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
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41
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Boddapati SNM, Kurmarayuni CM, Mutchu BR, Tamminana R, Bollikolla HB. Copper-catalyzed synthesis of 2-aminophenyl benzothiazoles: a novel approach. Org Biomol Chem 2018; 16:8267-8272. [DOI: 10.1039/c8ob02018c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Substituted 2-aminophenyl benzothiazoles have been constructed from thiourea via copper-catalyzed desulfurization/nucleophilic substitution followed by domino intra- and intermolecular C–N cross-coupling reactions under moderate reaction conditions.
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Affiliation(s)
| | | | | | - Ramana Tamminana
- Department of Chemistry
- GITAM Deemed to be University
- India-562163
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42
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Mahesh D, Satheesh V, Kumar SV, Punniyamurthy T. Copper(II)-Catalyzed Oxidative Coupling of Anilines, Methyl Arenes, and TMSN3 via C(sp3/sp2)–H Functionalization and C–N Bond Formation. Org Lett 2017; 19:6554-6557. [DOI: 10.1021/acs.orglett.7b03264] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Devulapally Mahesh
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Vanaparthi Satheesh
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Sundaravel Vivek Kumar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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43
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44
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Pogula J, Laha S, Likhar PR. Nano Copper(0)-Stabilized on Alumina: Efficient and Recyclable Heterogeneous Catalyst for Chemoselective Synthesis of 1,2-Disubstituted Benzimidazoles and Quinoxalines in Aqueous Medium. Catal Letters 2017. [DOI: 10.1007/s10562-017-2166-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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45
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Narang U, Yadav KK, Bhattacharya S, Chauhan SMS. Cobalt(II) Phthalocyanine Catalyzed One-Pot Synthesis of 2-Substituted Benzimidazoles, Benzothiazoles and Benzoxazoles from Substituted Benzyl Alcohols. ChemistrySelect 2017. [DOI: 10.1002/slct.201701559] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Uma Narang
- Department of Chemistry; University of Delhi; Delhi- 110007
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46
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Xia J, Yang X, Li Y, Li X. Iridium(III)-Catalyzed Synthesis of Benzimidazoles via C-H Activation and Amidation of Aniline Derivatives. Org Lett 2017; 19:3243-3246. [PMID: 28570081 DOI: 10.1021/acs.orglett.7b01356] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Ir(III)-catalyzed synthesis of benzimidazoles has been realized under redox-neutral conditions by annulation of aniline derivatives with dioxazolones. The reaction proceeded via a C-H activation-amidation-cyclization pathway with a decent substrate scope.
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Affiliation(s)
- Jintao Xia
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China.,University of Chinese Academy of Sciences , Beijing 100049, China
| | - Xifa Yang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China.,University of Chinese Academy of Sciences , Beijing 100049, China
| | - Yunyun Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China.,University of Chinese Academy of Sciences , Beijing 100049, China
| | - Xingwei Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China
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47
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Liu L, Qian LW, Wu S, Dong J, Xu Q, Zhou Y, Yin SF. Selective Aerobic C–H Amination of Phenols with Primary Amines over Copper toward Benzoxazoles. Org Lett 2017; 19:2849-2852. [DOI: 10.1021/acs.orglett.7b01061] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Long Liu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Liang-Wei Qian
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Shaofeng Wu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jianyu Dong
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Qing Xu
- College
of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Yongbo Zhou
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Shuang-Feng Yin
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
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48
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Reddy PL, Arundhathi R, Tripathi M, Chauhan P, Yan N, Rawat DS. Solvent-Free Oxidative Synthesis of 2-Substituted Benzimidazoles by Immobilized Cobalt Oxide Nanoparticles on Alumina/Silica Support. ChemistrySelect 2017. [DOI: 10.1002/slct.201700251] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Panyala L. Reddy
- Department of Chemistry; University of Delhi, Delhi-110007, India
| | - Racha Arundhathi
- Corporate Research & Development Centre; Bharat Petroleum Corporation Limited, Greater Noida; Uttar Pradesh- 201306 India
| | - Mohit Tripathi
- Department of Chemistry; University of Delhi, Delhi-110007, India
| | - Prashant Chauhan
- Faculty of Forestry; University of Toronto; 33 Willcock Street Toronto, ON Canada, M5S 3B3
- Department of Chemical Engineering and Applied Chemistry; University of Toronto; 200 college street Toronto, ON Canada, M5S 3ES
| | - Ning Yan
- Faculty of Forestry; University of Toronto; 33 Willcock Street Toronto, ON Canada, M5S 3B3
- Department of Chemical Engineering and Applied Chemistry; University of Toronto; 200 college street Toronto, ON Canada, M5S 3ES
| | - Diwan S. Rawat
- Department of Chemistry; University of Delhi, Delhi-110007, India
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49
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Gao S, Gao L, Meng H, Luo M, Zeng X. Iron-catalyzed synthesis of benzoxazoles by oxidative coupling/cyclization of phenol derivatives with benzoyl aldehyde oximes. Chem Commun (Camb) 2017; 53:9886-9889. [DOI: 10.1039/c7cc04965j] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
An iron-catalyzed oxidative coupling/cyclization reaction for the synthesis of benzoxazoles at room temperature is reported.
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Affiliation(s)
- Sen Gao
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Liming Gao
- Institute for the Control of Agrochemicals of Sichuan Province Chengdu
- Sichuan
- P. R. China
| | - Hong Meng
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Meiming Luo
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
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50
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Keerthi Krishnan K, Ujwaldev SM, Sindhu KS, Anilkumar G. Recent advances in the transition metal catalyzed etherification reactions. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.10.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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