1
|
Edelmann S, Lumb JP. A para- to meta-isomerization of phenols. Nat Chem 2024:10.1038/s41557-024-01512-1. [PMID: 38632366 DOI: 10.1038/s41557-024-01512-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 03/18/2024] [Indexed: 04/19/2024]
Abstract
Phenols and their derivatives are ubiquitous in nature and critically important industrial chemicals. Their properties are intimately linked to the relative substitution pattern of the aromatic ring, reflecting well-known electronic effects of the OH group. Because of these ortho-, para-directing effects, meta-substituted phenols have historically been more difficult to synthesize. Here we describe a procedure to transpose phenols that hinges on a regioselective diazotization of the corresponding ortho-quinone. The procedure affords the meta-substituted phenol directly from its more common and accessible para-substituted isomer, and demonstrates good chemoselectivity that enables its application in late-stage settings. By changing the electronic effect of the OH group and its trajectory of hydrogen bonding, our transposition can be used to diversify natural products and existing chemical libraries, and potentially shorten the length and cost of producing underrepresented arene isomers.
Collapse
Affiliation(s)
- Simon Edelmann
- Department of Chemistry, McGill University, Montreal, Quebec, Canada
| | - Jean-Philip Lumb
- Department of Chemistry, McGill University, Montreal, Quebec, Canada.
| |
Collapse
|
2
|
Carson MC, Kozlowski MC. Recent advances in oxidative phenol coupling for the total synthesis of natural products. Nat Prod Rep 2024; 41:208-227. [PMID: 37294301 PMCID: PMC10709532 DOI: 10.1039/d3np00009e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Covering: 2008 to 2023This review will describe oxidative phenol coupling as applied in the total synthesis of natural products. This review covers catalytic and electrochemical methods with a brief comparison to stoichiometric and enzymatic systems assessing their practicality, atom economy, and other measures. Natural products forged by C-C and C-O oxidative phenol couplings as well as from alkenyl phenol couplings will be addressed. Additionally, exploration into catalytic oxidative coupling of phenols and other related species (carbazoles, indoles, aryl ethers, etc.) will be surveyed. Future directions of this particular area of research will also be assessed.
Collapse
Affiliation(s)
- Matthew C Carson
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.
| | - Marisa C Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.
| |
Collapse
|
3
|
Panda S, Nanda A, Saha R, Ghosh R, Bagh B. Cobalt-Catalyzed Chemodivergent Synthesis of Cyclic Amines and Lactams from Ketoacids and Anilines Using Hydrosilylation. J Org Chem 2023. [PMID: 38031391 DOI: 10.1021/acs.joc.3c01870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Here, commercially available Co2(CO)8 was utilized as an efficient catalyst for chemodivergent synthesis of pyrrolidines and pyrrolidones from levulinic acid and aromatic amines under slightly different hydrosilylation conditions. 1.5 and 3 equiv of phenylsilane selectively yielded pyrrolidone and pyrrolidine, respectively. Various ketoacids and amines were successfully tested. Plausible mechanism involves the condensation of levulinic acid and amine to form an imine, which cyclizes to 3-pyrrolidin-2-one followed by reduction to pyrrolidone. The final reduction of pyrrolidone gave pyrrolidine.
Collapse
Affiliation(s)
- Surajit Panda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, P.O. Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar 752050, Odisha, India
| | - Amareshwar Nanda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, P.O. Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar 752050, Odisha, India
| | - Ratnakar Saha
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, P.O. Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar 752050, Odisha, India
| | - Rahul Ghosh
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, P.O. Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar 752050, Odisha, India
| | - Bidraha Bagh
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, P.O. Bhimpur-Padanpur, Via Jatni, District Khurda, Bhubaneswar 752050, Odisha, India
| |
Collapse
|
4
|
Xu B, Su W. A Tandem Dehydrogenation-Driven Cross-Coupling between Cyclohexanones and Primary Amines for Construction of Benzoxazoles. Angew Chem Int Ed Engl 2022; 61:e202203365. [PMID: 35546303 DOI: 10.1002/anie.202203365] [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] [Received: 03/03/2022] [Indexed: 01/27/2023]
Abstract
Herein, we report a transition metal-free, operationally simple, general method for straightforward syntheses of 2-substituted benzoxazoles from readily available cyclohexanones and aliphatic primary amines by an imine α-oxygenation-initiated cascade reaction sequence. The key to achieving high selectivity and excellent functional-group tolerance is the use of TEMPO as a mild oxidant that selectively oxidizes the reaction intermediates through its multiple reactivity modes, thus facilitating the individual steps to proceed in succession. More than 70 substrate combinations are disclosed, demonstrating the reliability of this protocol to synthesize structurally diverse products, including marketed drugs, drug candidate, and natural products that are unattainable by the existing methods.
Collapse
Affiliation(s)
- Biping Xu
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, 350002, China
| | - Weiping Su
- State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, 350002, China
| |
Collapse
|
5
|
Wu S, Geng F, Dong J, Liu L, Zhou Y. Metal-Free Oxidative Annulation of Phenols and Amines: A General Synthesis of Benzoxazoles. J Org Chem 2022; 87:9112-9127. [PMID: 35786919 DOI: 10.1021/acs.joc.2c00790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The ubiquity of benzoxazoles in natural products, drugs, and functional materials has stimulated numerous efforts toward their synthesis; however, the developed methods rely on prefunctionalized substrates and lack generality. Under metal-free conditions, a highly general synthesis of benzoxazoles direct from abundant and easily available phenols and amines is developed via a modular phenol functionalization controlled by TEMPO. In the reaction, various phenols and primary amines with a broad range of functional groups are compatible, producing structurally and functionally diverse benzoxazoles (64 examples) without or with trace observation of the byproducts of phenol transformation with amines. The practical synthesis, especially for drug tafamidis, demonstrates decisive advantages in generality, selectivity, efficiency, and atom- and step-economies over traditional methods, even in the cases of low yields. Mechanistically, the radical adducts of TEMPO with ortho-cyclohexa-2,4-dien-1-one radicals rather than the well-recognized cyclohexa-3,5-diene-1,2-diones may serve as intermediates.
Collapse
Affiliation(s)
- Shaofeng Wu
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Furong Geng
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jianyu Dong
- School of Physics and Chemistry, Hunan First Normal University, Changsha 410205, China
| | - Long Liu
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yongbo Zhou
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| |
Collapse
|
6
|
Peng L, Hu Z, Zhao Y, Peng L, Xu Z, Yin SF, Tang Z, Qiu R, Kambe N. One-pot synthesis of phosphorylnaphth[2,1- d]oxazoles and products as P,N-ligands in C-N and C-C formation. Org Biomol Chem 2022; 20:4110-4114. [PMID: 35551357 DOI: 10.1039/d2ob00565d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phosphanylnaphtho[2,1-d]oxazoles were synthesized successfully through one-pot phosphonation of naphthoquinone with diaryl(alkyl)phosphine oxides and Cu-catalyzed oxidative condensation with imines, followed by methylation and reduction. Upon applying 4-phosphanylnaphtho[2,1-d]oxazole as a P,N-chelating ligand, Pd-catalyzed C-N formation of amines or nitrobenzene as well as Ni-catalyzed C-C formation and the synthesis of quinoline proceeded successfully. The reaction was facilely scaled up to give N-benzylaniline 15a in a gram scale synthesis. This research provided a facile and convenient protocol to synthesize phosphanylnaphtho[2,1-d]oxazoles, which could be applied as an efficient P,N-ligand in transition-metal-catalyzed C-N and C-C formation to produce the desired products in high yields with wide functional group tolerance under small catalyst loading, solvent-free conditions in many reactions.
Collapse
Affiliation(s)
- Lingteng Peng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Zhifang Hu
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, P. R. China
| | - Yanting Zhao
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, P. R. China
| | - Lifen Peng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China. .,Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, P. R. China
| | - Zhi Xu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Shuang-Feng Yin
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Zilong Tang
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, P. R. China
| | - Renhua Qiu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Nobuaki Kambe
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China. .,Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.
| |
Collapse
|
7
|
Xu B, Su W. A Tandem Dehydrogenation‐Driven Cross‐Coupling between Cyclohexanones and Primary Amines for Construction of Benzoxazoles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Biping Xu
- FIRSM: Chinese Academy of Sciences Fujian Institute of Research on the Structure of Matter Chemistry CHINA
| | - Weiping Su
- Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences State Key Laboratory of Structural Chemistry Yangqiao West Road 155# 350002 Fuzhou CHINA
| |
Collapse
|
8
|
Chen K, Kang QK, Li Y, Wu WQ, Zhu H, Shi H. Catalytic Amination of Phenols with Amines. J Am Chem Soc 2022; 144:1144-1151. [PMID: 35015956 DOI: 10.1021/jacs.1c12622] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Given the wide prevalence and ready availability of both phenols and amines, aniline synthesis through direct coupling between these starting materials would be extremely attractive. Herein, we describe a rhodium-catalyzed amination of phenols, which provides concise access to diverse anilines, with water as the sole byproduct. The arenophilic rhodium catalyst facilitates the inherently difficult keto-enol tautomerization of phenols by means of π-coordination, allowing for the subsequent dehydrative condensation with amines. We demonstrate the generality of this redox-neutral catalysis by carrying out reactions of a large array of phenols with various electronic properties and a wide variety of primary and secondary amines. Several examples of late-stage functionalization of structurally complex bioactive molecules, including pharmaceuticals, further illustrate the potential broad utility of the method.
Collapse
Affiliation(s)
- Kai Chen
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province. China
| | - Qi-Kai Kang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province. China
| | - Yuntong Li
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province. China
| | - Wen-Qiang Wu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province. China
| | - Hui Zhu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province. China
| | - Hang Shi
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province. China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| |
Collapse
|
9
|
Wu S, Geng F, Dong J, Liu L, Su L, Zhou Y. General and practical synthesis of naphtho[2,1-d]oxazoles from naphthols and amines. Org Chem Front 2022. [DOI: 10.1039/d2qo00557c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general and practical synthesis of naphtho[2,1-d]oxazoles from readily available naphthols and amines is developed using TEMPO as the oxygen source with outstanding functional group tolerance, especially for the construction...
Collapse
|
10
|
Bashir MA, Tang L, Li L, Yu H, Yao W, Wu G, Zhong F. Formal dual C(sp 2)–H cross-dehydrogenative C–O bond formation to construct highly functionalized diaryl ethers with O 2. Org Chem Front 2022. [DOI: 10.1039/d1qo01942b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A formal dual C(sp2)–H cross-dehydrogenative C–O bond formation reaction between phenols and naphthylamine derivatives to construct diaryl ethers has been developed under mild conditions.
Collapse
Affiliation(s)
- Muhammad Adnan Bashir
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Langyu Tang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Longjie Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Huaibin Yu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Weijun Yao
- Department of Chemistry, Zhejiang Sci-Tech University, China
| | - Guojiao Wu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Fangrui Zhong
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| |
Collapse
|
11
|
Abstract
A Cu-catalyzed straightforward synthesis of benzoxazoles from free phenols and cyclic oxime esters is reported. The mild reaction conditions tolerate various electron-withdrawing and electron-donating functional groups on both substrates, affording benzoxazoles in moderate to good yields. With this protocol, large-scale syntheses of Ezutromid and Flunoxaprofe in one or two steps are demonstrated. A catalytic mechanism, which includes Cu-catalyzed amination via inner-sphere electron transfer and consequent annulation, is proposed.
Collapse
Affiliation(s)
- Zheng-Hai Wang
- Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, China
| | - Dong-Hui Wang
- Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, China.,Department of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Boulevard, Nanjing 210023, China
| |
Collapse
|
12
|
Hassan AA, Gheni SA, Ahmed SM, Abdullah GH, Harvey A. Aromatic Free Fenton Process for Rapid Removal of Phenol from Refinery Wastewater in an Oscillatory Baffled Reactor. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
|
13
|
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
| |
Collapse
|
14
|
Wu S, Zhou D, Geng F, Dong J, Su L, Zhou Y, Yin S. Metal‐Free Oxidative Condensation of Catechols, Aldehydes and NH
4
OAc towards Benzoxazoles. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shaofeng Wu
- Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Dan Zhou
- Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Furong Geng
- Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Jianyu Dong
- Department of Educational Science Hunan First Normal University Changsha 410205 People's Republic of China
| | - Lebin Su
- Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Yongbo Zhou
- Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Shuang‐Feng Yin
- Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| |
Collapse
|
15
|
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
| |
Collapse
|
16
|
Politano F, Sandoval AL, Uranga JG, Buján EI, Leadbeater NE. Using experimental and computational approaches to probe an unusual carbon-carbon bond cleavage observed in the synthesis of benzimidazole N-oxides. Org Biomol Chem 2021; 19:208-215. [PMID: 33179700 DOI: 10.1039/d0ob01797c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Experimental and computational studies have been performed in order to investigate an unusual carbon-carbon bond cleavage that occurs in the preparation of certain benzimidazole N-oxides from anilines. The key factor determining the outcome of the reaction was found to be the substituents on the amine functionality of the aniline.
Collapse
Affiliation(s)
- Fabrizio Politano
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, USA.
| | | | | | | | | |
Collapse
|
17
|
Tang Z, Li D, Yue Y, Peng D, Liu L. Brønsted acid catalysed chemo- and ortho-selective aminomethylation of phenol. Org Biomol Chem 2021; 19:5777-5781. [PMID: 34156058 DOI: 10.1039/d1ob00820j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have developed a Brønsted acid catalysed highly ortho-selective functionalization of free phenols with readily available N,O-acetals under mild conditions, furnishing various corresponding aminomethylated phenol products in moderate to excellent yields. The salient features of this transformation include mild conditions, good substrate scope, excellent ortho-selectivity, high efficiency, and ease of further transformation.
Collapse
Affiliation(s)
- Zhiqiong Tang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China.
| | - Dongdong Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China.
| | - Yidi Yue
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China.
| | - Dan Peng
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China.
| | - Lu Liu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China. and Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
| |
Collapse
|
18
|
Kim D, Lim HN. Synthesis of Acyl Fluorides via DAST-Mediated Fluorinative C-C Bond Cleavage of Activated Ketones. Org Lett 2020; 22:7465-7469. [PMID: 32929974 DOI: 10.1021/acs.orglett.0c02603] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new protocol for preparation of acyl fluorides was developed by recognizing activated ketones as starting materials. The method provides a different scope compared with previously reported methods that employ carboxylic acids as substrates. A working hypothesis of pull-and-push-driven fluorinative C-C bond cleavage was successfully demonstrated by the simple addition of diethylaminosulfur trifluoride (DAST) derivatives to α-oximinoketones. The designed reaction system led to a highly efficient and chemoselective reaction. The wide availability of the ketones allowed for a range of synthetically useful aryloyl and aliphatic acyl fluorides including those containing chiral skeletons. The method is mild, fast, scalable, and potentially one-pot operative.
Collapse
Affiliation(s)
- Danhee Kim
- Eco-Friendly New Materials Research Center, Therapeutics&Biotechnology Division, Korea Research Institute of Chemical Technology(KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea.,Department of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Hee Nam Lim
- Eco-Friendly New Materials Research Center, Therapeutics&Biotechnology Division, Korea Research Institute of Chemical Technology(KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| |
Collapse
|
19
|
Das A, Ren Y, Hessin C, Desage-El Murr M. Copper catalysis with redox-active ligands. Beilstein J Org Chem 2020; 16:858-870. [PMID: 32461767 PMCID: PMC7214867 DOI: 10.3762/bjoc.16.77] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 04/08/2020] [Indexed: 01/15/2023] Open
Abstract
Copper catalysis finds applications in various synthetic fields by utilizing the ability of copper to sustain mono- and bielectronic elementary steps. Further to the development of well-defined copper complexes with classical ligands such as phosphines and N-heterocyclic carbenes, a new and fast-expanding area of research is exploring the possibility of a complementing metal-centered reactivity with electronic participation by the coordination sphere. To achieve this electronic flexibility, redox-active ligands can be used to engage in a fruitful “electronic dialogue” with the metal center, and provide additional venues for electron transfer. This review aims to present the latest results in the area of copper-based cooperative catalysis with redox-active ligands.
Collapse
Affiliation(s)
- Agnideep Das
- Université de Strasbourg, Institut de Chimie, UMR CNRS 7177, 67000 Strasbourg, France
| | - Yufeng Ren
- Sorbonne Université, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232, 75005 Paris, France
| | - Cheriehan Hessin
- Université de Strasbourg, Institut de Chimie, UMR CNRS 7177, 67000 Strasbourg, France
| | - Marine Desage-El Murr
- Université de Strasbourg, Institut de Chimie, UMR CNRS 7177, 67000 Strasbourg, France
| |
Collapse
|
20
|
Anderson K, Eastabrook AS, Sperry J. One-pot oxidative hydrolysis-oxidative cleavage of 7-borylindoles enables access to o-amidophenols and 4-acylbenzoxazoles. Chem Commun (Camb) 2020; 56:3559-3562. [PMID: 32104796 DOI: 10.1039/c9cc09807k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
7-Borylindoles undergo a one-pot oxidative-hydrolysis of the arylboronate and oxidative cleavage of the indole C2-C3 double bond to afford o-amidophenol derivatives. Subsequent cyclisation delivers benzoxazoles bearing an acyl group at C4, a substitution pattern common to fungal-derived benzoxazole alkaloids. Using 7-borylindoles as substrates to access functionalised o-amidophenols circumvents the difficult preparation of these compounds from arenes, streamlining access to substituted 4-acylbenzoxazoles in the process.
Collapse
Affiliation(s)
- Kirsty Anderson
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand.
| | | | | |
Collapse
|
21
|
Sahoo K, Pradhan P, Panda N. Access to C4-arylated benzoxazoles from 2-amidophenol through C-H activation. Org Biomol Chem 2020; 18:1820-1832. [PMID: 32100813 DOI: 10.1039/d0ob00061b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A Pd-catalyzed aerobic approach to access C4-aryl benzoxazoles by tandem C-H ortho-arylation and acid-mediated annulation of 2-amidophenol has been presented. The directing potential of the -NHCOR group over the -OH group was exploited for selective arylation adjacent to the amide group. Deuterium labeling experiments suggest that palladation predominantly occurs adjacent to the -NHCOR group and is the key step during benzoxazole formation. One-pot hydrolysis of the resulting C4-arylated benzoxazole was also accomplished to access structurally challenging 3-aryl aminophenols for further applications.
Collapse
Affiliation(s)
- Kanchanbala Sahoo
- Department of Chemistry, National Institute of Technology Rourkela, Odisha 769008, India.
| | - Priyanka Pradhan
- Department of Chemistry, National Institute of Technology Rourkela, Odisha 769008, India.
| | - Niranjan Panda
- Department of Chemistry, National Institute of Technology Rourkela, Odisha 769008, India.
| |
Collapse
|
22
|
Huang W, Wu G, Xiao H, Song H, Gan S, Ruan S, Gao Z, Song J. Transformation of m-aminophenol by birnessite (δ-MnO 2) mediated oxidative processes: Reaction kinetics, pathways and toxicity assessment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 256:113408. [PMID: 31662267 DOI: 10.1016/j.envpol.2019.113408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 09/30/2019] [Accepted: 10/14/2019] [Indexed: 06/10/2023]
Abstract
The m-aminophenol (m-AP) is a widely used industrial chemical, which enters water, soils, and sediments with waste emissions. A common soil metal oxide, birnessite (δ-MnO2), was found to mediate the transformation of m-AP with fast rates under acidic conditions. Because of the highly complexity of the m-AP transformation, mechanism-based models were taken to fit the transformation kinetic process of m-AP. The results indicated that the transformation of m-AP with δ-MnO2 could be described by precursor complex formation rate-limiting model. The oxidative transformation of m-AP on the surface of δ-MnO2 was highly dependent on reactant concentrations, pH, temperature, and other co-solutes. The UV-VIS absorbance and mass spectra analysis indicated that the pathway leading to m-AP transformation may be the polymerization through the coupling reaction. The m-AP radicals were likely to be coupled by the covalent bonding between unsubstituted C2, C4 or C6 atoms in the m-AP aromatic rings to form oligomers as revealed by the results of activation energy and mass spectra. Furthermore, the toxicity assessment of the transformation productions indicated that the toxicity of m-AP to the E. coli K-12 could be reduced by MnO2 mediated transformation. The results are helpful for understanding the environmental behavior and potential risk of m-AP in natural environment.
Collapse
Affiliation(s)
- Wenqian Huang
- School of Chemistry and Environment, South China Normal University, Universities Town, Guangzhou, 510006, PR China
| | - Guowei Wu
- School of Chemistry and Environment, South China Normal University, Universities Town, Guangzhou, 510006, PR China
| | - Hong Xiao
- School of Chemistry and Environment, South China Normal University, Universities Town, Guangzhou, 510006, PR China
| | - Haiyan Song
- School of Chemistry and Environment, South China Normal University, Universities Town, Guangzhou, 510006, PR China; Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academic of Sciences, Guangzhou, 510640, PR China; Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, South China Normal University, Guangzhou, 510006, PR China.
| | - Shuzhao Gan
- School of Chemistry and Environment, South China Normal University, Universities Town, Guangzhou, 510006, PR China
| | - Shuhong Ruan
- School of Chemistry and Environment, South China Normal University, Universities Town, Guangzhou, 510006, PR China
| | - Zhihong Gao
- School of Chemistry and Environment, South China Normal University, Universities Town, Guangzhou, 510006, PR China
| | - Jianzhong Song
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, PR China
| |
Collapse
|
23
|
Oxidative synthesis of benzo[1,4]oxazines from α-branched primary amines and ortho-benzoquinones. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130726] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
24
|
Huang Z, Ji X, Lumb JP. Total Synthesis of ( S, S)-Tetramethylmagnolamine via Aerobic Desymmetrization. Org Lett 2019; 21:9194-9197. [PMID: 31682131 DOI: 10.1021/acs.orglett.9b03559] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We describe a concise synthesis of the pseudodimeric tetrahydroisoqunoline alkaloid (S,S)-tetramethylmagnolamine by a catalytic aerobic desymmetrization of phenols. Desymmetrization reactions increase molecular complexity with high levels of efficiency, but those that do so by aerobic oxidation are uncommon. Our conditions employ molecular oxygen as an oxygen atom transfer agent and a formal acceptor of hydrogen, enabling two mechanistically distinct aromatic C-H oxygenation reactions with high degrees of selectivity.
Collapse
Affiliation(s)
- Zheng Huang
- Department of Chemistry , McGill University , 801 Sherbrooke Street West , Montreal , QC H3A 0B8 , Canada
| | - Xiang Ji
- Department of Chemistry , McGill University , 801 Sherbrooke Street West , Montreal , QC H3A 0B8 , Canada
| | - Jean-Philip Lumb
- Department of Chemistry , McGill University , 801 Sherbrooke Street West , Montreal , QC H3A 0B8 , Canada
| |
Collapse
|
25
|
Desage‐El Murr M. Nature is the Cure: Engineering Natural Redox Cofactors for Biomimetic and Bioinspired Catalysis. ChemCatChem 2019. [DOI: 10.1002/cctc.201901642] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Marine Desage‐El Murr
- Institut de Chimie UMR 7177Université de Strasbourg 1 rue Blaise Pascal Strasbourg 67000 France
| |
Collapse
|
26
|
Yao ZL, Wang L, Shao NQ, Guo YL, Wang DH. Copper-Catalyzed ortho-Selective Dearomative C–N Coupling of Simple Phenols with O-Benzoylhydroxylamines. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01317] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
27
|
Vasu D, Fuentes de Arriba AL, Leitch JA, de Gombert A, Dixon DJ. Primary α-tertiary amine synthesis via α-C-H functionalization. Chem Sci 2019; 10:3401-3407. [PMID: 30996928 PMCID: PMC6429468 DOI: 10.1039/c8sc05164j] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 02/03/2019] [Indexed: 12/14/2022] Open
Abstract
A quinone-mediated general synthetic platform for the construction of primary α-tertiary amines from abundant primary α-branched amine starting materials is described. This procedure pivots on the efficient in situ generation of reactive ketimine intermediates and subsequent reaction with carbon-centered nucleophiles such as organomagnesium and organolithium reagents, and TMSCN, creating quaternary centers. Furthermore, extension to reverse polarity photoredox catalysis enables reactivity with electrophiles, via a nucleophilic α-amino radical intermediate. This efficient, broadly applicable and scalable amine-to-amine synthetic platform was successfully applied to library and API synthesis and in the functionalization of drug molecules.
Collapse
Affiliation(s)
- Dhananjayan Vasu
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford , UK .
| | - Angel L Fuentes de Arriba
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford , UK .
| | - Jamie A Leitch
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford , UK .
| | - Antoine de Gombert
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford , UK .
| | - Darren J Dixon
- Department of Chemistry , Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford , UK .
| |
Collapse
|
28
|
Xu W, Huang Z, Ji X, Lumb JP. Catalytic Aerobic Cross-Dehydrogenative Coupling of Phenols and Catechols. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04443] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Wenbo Xu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, China
| | - Zheng Huang
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada
| | - Xiang Ji
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada
| | - Jean-Philip Lumb
- Department of Chemistry, McGill University, Montreal, QC H3A 0B8, Canada
| |
Collapse
|
29
|
Zhang R, Qin Y, Zhang L, Luo S. Mechanistic Studies on Bioinspired Aerobic C-H Oxidation of Amines with an ortho-Quinone Catalyst. J Org Chem 2019; 84:2542-2555. [PMID: 30753779 DOI: 10.1021/acs.joc.8b02948] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report herein our mechanistic studies of the ortho-quinone-catalyzed aerobic oxidation of primary, secondary, and tertiary amines. Two different catalytic pathways were discovered for the reductive half reactions: for primary amines, the reaction was found to proceed via a transamination pathway, while the reactions with secondary amines and tertiary amines proceeded via hydride transfer. We also found that the amine substrates could significantly promote the regeneration of the ortho-quinone catalyst in the oxidative half reaction, in which a proton transfer occurs between the amine substrates and catechol derivatives (the reduced form of the ortho-quinone catalyst).
Collapse
Affiliation(s)
- Ruipu Zhang
- Key Laboratory of Molecular Recognition and Function, Institute of Chemistry , The Chinese Academy of Sciences and University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yan Qin
- Key Laboratory of Molecular Recognition and Function, Institute of Chemistry , The Chinese Academy of Sciences and University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Long Zhang
- Key Laboratory of Molecular Recognition and Function, Institute of Chemistry , The Chinese Academy of Sciences and University of Chinese Academy of Sciences , Beijing 100049 , China.,Center of Basic Molecular Science (CBMS), Department of Chemistry , Tsinghua University , Beijing 100084 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300071 , China
| | - Sanzhong Luo
- Key Laboratory of Molecular Recognition and Function, Institute of Chemistry , The Chinese Academy of Sciences and University of Chinese Academy of Sciences , Beijing 100049 , China.,Center of Basic Molecular Science (CBMS), Department of Chemistry , Tsinghua University , Beijing 100084 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300071 , China
| |
Collapse
|
30
|
Affiliation(s)
- Zheng Huang
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC H3A 0B8, Canada
| | - Jean-Philip Lumb
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC H3A 0B8, Canada
| |
Collapse
|
31
|
|
32
|
Huang Z, Kwon O, Huang H, Fadli A, Marat X, Moreau M, Lumb JP. A Bioinspired Synthesis of Polyfunctional Indoles. Angew Chem Int Ed Engl 2018; 57:11963-11967. [PMID: 29978600 DOI: 10.1002/anie.201806490] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 06/29/2018] [Indexed: 01/25/2023]
Affiliation(s)
- Zheng Huang
- Department of Chemistry; McGill University; 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
| | - Ohhyeon Kwon
- Department of Chemistry; McGill University; 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
| | - Haiyan Huang
- Department of Chemistry; McGill University; 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
| | - Aziz Fadli
- L'Oréal Research and Innovation; Aulnay-sous-Bois France
| | - Xavier Marat
- L'Oréal Research and Innovation; Aulnay-sous-Bois France
| | | | - Jean-Philip Lumb
- Department of Chemistry; McGill University; 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
| |
Collapse
|
33
|
Huang Z, Kwon O, Huang H, Fadli A, Marat X, Moreau M, Lumb JP. A Bioinspired Synthesis of Polyfunctional Indoles. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806490] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zheng Huang
- Department of Chemistry; McGill University; 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
| | - Ohhyeon Kwon
- Department of Chemistry; McGill University; 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
| | - Haiyan Huang
- Department of Chemistry; McGill University; 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
| | - Aziz Fadli
- L'Oréal Research and Innovation; Aulnay-sous-Bois France
| | - Xavier Marat
- L'Oréal Research and Innovation; Aulnay-sous-Bois France
| | | | - Jean-Philip Lumb
- Department of Chemistry; McGill University; 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
| |
Collapse
|
34
|
Jia L, Tang Q, Luo M, Zeng X. Direct ortho-Selective Amination of 2-Naphthol and Its Analogues with Hydrazines. J Org Chem 2018; 83:5082-5091. [PMID: 29644862 DOI: 10.1021/acs.joc.8b00421] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Described herein is a regioselective ortho-amination of 2-naphthol and its analogues with substituted hydrazines. It provides a direct methodology for the synthesis of N-arylaminated naphthol derivatives without the formation of related 1,1'-biaryl-2,2'-diamine or carbazole byproducts. Specifically, using N, N-disubstituted hydrazine precursors, N-unsubstituted ortho-aminated derivatives and related secondary amines can be formed in ethylene glycol in moderate to excellent yields. Variation of substrates to N, N'-diarylhydrazines and N-methyl- N, N'-diarylhydrazines led to N-aryl-1-amino-2-naphthol compounds. It is noted that biologically interesting indazole motifs can be facilely created by the reaction of N, N'-dialkylhydrazines with 2-naphthols. These ortho-amination reactions have the advantage of one-pot operation without the use of transition metal catalysts.
Collapse
Affiliation(s)
- Lei Jia
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , PR China
| | - Qiang Tang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , PR China.,College of Pharmacy , Chongqing Medical University , Chongqing 400016 , PR China
| | - Meiming Luo
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , PR China
| | - Xiaoming Zeng
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , PR China
| |
Collapse
|
35
|
Esguerra KVN, Lumb JP. Selectivity in the Aerobic Dearomatization of Phenols: Total Synthesis of Dehydronornuciferine by Chemo- and Regioselective Oxidation. Angew Chem Int Ed Engl 2018; 57:1514-1518. [PMID: 29271101 DOI: 10.1002/anie.201710271] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 12/05/2017] [Indexed: 11/11/2022]
Abstract
We describe a selective aerobic oxidation of meta-biaryl phenols that enables rapid access to functionalized phenanthrenes. Aerobic oxidations attract interest due to their efficiency, but remain underutilized in complex molecule settings due to challenges of selectivity. We discuss these issues in the context of Cu catalysis, and highlight the advantages of confining oxygen activation and substrate oxidation to the catalyst's inner-coordination sphere. This gives rise to predictable selectivity that we use for a concise synthesis of the aporphine dehydronornuciferine.
Collapse
Affiliation(s)
- Kenneth Virgel N Esguerra
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, Quebec, H3A 0B8, Canada
| | - Jean-Philip Lumb
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, Quebec, H3A 0B8, Canada
| |
Collapse
|
36
|
Esguerra KVN, Lumb JP. Selectivity in the Aerobic Dearomatization of Phenols: Total Synthesis of Dehydronornuciferine by Chemo- and Regioselective Oxidation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201710271] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Jean-Philip Lumb
- Department of Chemistry; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
| |
Collapse
|
37
|
Zhang R, Qin Y, Zhang L, Luo S. Oxidative Synthesis of Benzimidazoles, Quinoxalines, and Benzoxazoles from Primary Amines by ortho-Quinone Catalysis. Org Lett 2017; 19:5629-5632. [DOI: 10.1021/acs.orglett.7b02786] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Ruipu Zhang
- Key
Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan Qin
- Key
Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Long Zhang
- Key
Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sanzhong Luo
- Key
Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
38
|
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
| |
Collapse
|
39
|
|
40
|
Esguerra KVN. Phenol Functionalization Inspired by Melanogenesis. Chem 2017. [DOI: 10.1016/j.chempr.2017.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
41
|
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.
Collapse
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
| |
Collapse
|