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
|
Wu J, Kozlowski MC. Catalytic Oxidative Coupling of Phenols and Related Compounds. ACS Catal 2022; 12:6532-6549. [DOI: 10.1021/acscatal.2c00318] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jingze Wu
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Marisa C. Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| |
Collapse
|
3
|
Abd-Elsabour M, Assaf HF, Abo-Bakr AM, Alhamzani AG, Abou-Krisha MM, Al-Mutairi AA, Alsoghier HM. Green electro-organic synthesis of a novel catechol derivative based on o-benzoquinone nucleophilic addition. NEW J CHEM 2022. [DOI: 10.1039/d2nj04530c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
In this work, a green-electrochemical synthesis was applied to catechol oxidation (1) to o-benzoquinone (2) using cyclic voltammetry and potential controlled coulometry.
Collapse
Affiliation(s)
- Mohamed Abd-Elsabour
- Chemistry Department, Faculty of Science, South Valley University, 83523 Qena, Egypt
| | - Hytham F. Assaf
- Chemistry Department, Faculty of Science, South Valley University, 83523 Qena, Egypt
| | - Ahmed M. Abo-Bakr
- Chemistry Department, Faculty of Science, South Valley University, 83523 Qena, Egypt
| | - Abdulrahman G. Alhamzani
- Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Mortaga M. Abou-Krisha
- Chemistry Department, Faculty of Science, South Valley University, 83523 Qena, Egypt
- Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Aamal A. Al-Mutairi
- Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Hesham M. Alsoghier
- Chemistry Department, Faculty of Science, South Valley University, 83523 Qena, Egypt
| |
Collapse
|
4
|
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
|
5
|
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
|
6
|
Nguyen NH, Vo VG, Phan HVT, Ngo TT, Sichaem J, Nguyen TP, Nguyen HH, Pham DD, Nguyen TC, Nguyen VK, Duong TH. Design, modification of phyllanthone derivatives as anti-diabetic and cytotoxic agents. Nat Prod Res 2020; 36:371-378. [PMID: 32608266 DOI: 10.1080/14786419.2020.1788023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Twelve benzylidene derivatives, one Baeyer-Villiger oxidative, six imine derivatives were successfully designed and synthesised from phyllanthone. In the search for potential new anti-diabetic agents, phyllanthone along with its benzylidene and oxidation analogues were evaluated for enzyme inhibition against α-glucosidase. In the benzylidene series, most analogues displayed stronger activity than the mother compound. Compound 1c revealed the strongest activity, outperforming the acarbose positive control with an IC50 value of 19.59 µM. Phyllanthone and its derivatives were then tested for cytotoxic activity against the K562 cell line. The imine analogues displayed the most powerful cytotoxic activity with 3cand 3d having IC50 values of 57.55 and 68.02 µM, respectively.
Collapse
Affiliation(s)
- Ngoc-Hong Nguyen
- CirTech Institute, Ho Chi Minh City University of Technology (HUTECH), Ho ChiMinh City, Vietnam
| | - Van-Giau Vo
- Department of BionanoTechnology, Gachon Medical Research Institute, Gachon University, Seongnam, Korea
| | | | - Thanh-The Ngo
- Department of Chemistry, University of Education, Ho Chi Minh City, Vietnam
| | - Jirapast Sichaem
- Research Unit in Natural Products Chemistry and Bioactivities, Faculty of Science and Technology, Thammasat University Lampang Campus, Lampang, Thailand
| | - Thi-Phuong Nguyen
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
| | - Huu-Hung Nguyen
- Faculty of Technology, Van Lang University, Ho Chi Minh City, Vietnam
| | - Duc-Dung Pham
- Department of Chemistry, University of Education, Ho Chi Minh City, Vietnam
| | - Tien-Cong Nguyen
- Department of Chemistry, University of Education, Ho Chi Minh City, Vietnam
| | - Van-Kieu Nguyen
- Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, Vietnam.,Faculty of Natural Sciences, Duy Tan University, Da Nang, Vietnam
| | - Thuc-Huy Duong
- Department of Chemistry, University of Education, Ho Chi Minh City, Vietnam
| |
Collapse
|
7
|
Dai C, Han Y, Liu L, Huang ZB, Shi DQ, Zhao Y. Palladium-catalyzed ortho-selective C–H hydroxylation of carboxybenzyl-protected benzylamines. Org Chem Front 2020. [DOI: 10.1039/c9qo01523j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A convenient approach to synthesize o-hydroxybenzylamine via Pd-catalyzed hydroxylation of benzylamine with a removable Cbz-amide as the directing group was developed.
Collapse
Affiliation(s)
- Chenyang Dai
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Yi Han
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Lingling Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Zhi-Bin Huang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Da-Qing Shi
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| |
Collapse
|
8
|
Balgotra S, Verma PK, Vishwakarma RA, Sawant SD. Catalytic advances in direct functionalizations using arylated hydrazines as the building blocks. CATALYSIS REVIEWS 2019. [DOI: 10.1080/01614940.2019.1702191] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Shilpi Balgotra
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
- Academy of Scientific and Innovative Research, New Delhi, India
| | - Praveen Kumar Verma
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - Ram A. Vishwakarma
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - Sanghapal D. Sawant
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
- Academy of Scientific and Innovative Research, New Delhi, India
| |
Collapse
|
9
|
Nieves-Quinones Y, Paniak TJ, Lee YE, Kim SM, Tcyrulnikov S, Kozlowski MC. Chromium-Salen Catalyzed Cross-Coupling of Phenols: Mechanism and Origin of the Selectivity. J Am Chem Soc 2019; 141:10016-10032. [PMID: 31125210 DOI: 10.1021/jacs.9b03890] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A highly chemoselective phenol cross-coupling reaction catalyzed by a Cr-salen catalyst was developed. Kinetic studies showed that the oxidation of Cr(III) to Cr(V) is the rate-determining step of the reaction. In addition, experimental stoichiometric analysis showed that a high valent Cr(V) species is the active catalyst for this process. The selectivity of the reaction was found to be determined by the cross-coupling carbon-carbon bond forming reaction, rather than any precoordination species. It appears that the lowest energy cross-coupling pathway requires a lesser degree of electronic reorganization in its transition state vs the lowest energy homocoupling pathway. This result was supported by stoichiometric Cr(V) kinetics, 13C kinetic isotope effects, and density functional theory (DFT) calculations. The understanding of the full landscape of this reaction allowed us to develop a general analysis to predict the regioselectivity of the cross-coupling reaction.
Collapse
Affiliation(s)
- Yexenia Nieves-Quinones
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Thomas J Paniak
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Young Eun Lee
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Sun Min Kim
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Sergei Tcyrulnikov
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Marisa C Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| |
Collapse
|
10
|
Trammell R, Rajabimoghadam K, Garcia-Bosch I. Copper-Promoted Functionalization of Organic Molecules: from Biologically Relevant Cu/O 2 Model Systems to Organometallic Transformations. Chem Rev 2019; 119:2954-3031. [PMID: 30698952 DOI: 10.1021/acs.chemrev.8b00368] [Citation(s) in RCA: 155] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Copper is one of the most abundant and less toxic transition metals. Nature takes advantage of the bioavailability and rich redox chemistry of Cu to carry out oxygenase and oxidase organic transformations using O2 (or H2O2) as oxidant. Inspired by the reactivity of these Cu-dependent metalloenzymes, chemists have developed synthetic protocols to functionalize organic molecules under enviormentally benign conditions. Copper also promotes other transformations usually catalyzed by 4d and 5d transition metals (Pd, Pt, Rh, etc.) such as nitrene insertions or C-C and C-heteroatom coupling reactions. In this review, we summarized the most relevant research in which copper promotes or catalyzes the functionalization of organic molecules, including biological catalysis, bioinspired model systems, and organometallic reactivity. The reaction mechanisms by which these processes take place are discussed in detail.
Collapse
Affiliation(s)
- Rachel Trammell
- Department of Chemistry , Southern Methodist University , Dallas , Texas 75275 , United States
| | | | - Isaac Garcia-Bosch
- Department of Chemistry , Southern Methodist University , Dallas , Texas 75275 , United States
| |
Collapse
|
11
|
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
|
12
|
Chen C, Pan Y, Zhao H, Xu X, Luo Z, Cao L, Xi S, Li H, Xu L. Ruthenium(II)-Catalyzed Regioselective C-8 Hydroxylation of 1,2,3,4-Tetrahydroquinolines. Org Lett 2018; 20:6799-6803. [PMID: 30351962 DOI: 10.1021/acs.orglett.8b02926] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ru(II)-catalyzed chelation-assisted highly regioselective C8-hydroxylation of 1,2,3,4-tretrahydroquinolines has been developed. Various 1,2,3,4-tetrahydroquinolines underwent smooth C8-H hydroxylation with cheap and safe K2S2O8 as the oxidant and oxygen source to furnish the corresponding products in good to excellent yields with high tolerance of the functional groups. The choice of a readily installable and removable N-pyrimidyl directing group is the key to catalysis. Mechanistic studies suggest the involvement of a six-membered ruthenacycle intermediate in the catalytic cycle. The method can also be extended to the direct hydroxylation of other (hetero)arene C-H bonds.
Collapse
Affiliation(s)
- Changjun Chen
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Yixiao Pan
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Haoqiang Zhao
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Xin Xu
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Zhenli Luo
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Lei Cao
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Siqi Xi
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Huanrong Li
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Lijin Xu
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| |
Collapse
|
13
|
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
|
14
|
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
|
15
|
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
|
16
|
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
|
17
|
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
|
18
|
Wagner-Wysiecka E, Łukasik N, Biernat JF, Luboch E. Azo group(s) in selected macrocyclic compounds. J INCL PHENOM MACRO 2018; 90:189-257. [PMID: 29568230 PMCID: PMC5845695 DOI: 10.1007/s10847-017-0779-4] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 12/26/2017] [Indexed: 01/15/2023]
Abstract
Azobenzene derivatives due to their photo- and electroactive properties are an important group of compounds finding applications in diverse fields. Due to the possibility of controlling the trans-cis isomerization, azo-bearing structures are ideal building blocks for development of e.g. nanomaterials, smart polymers, molecular containers, photoswitches, and sensors. Important role play also macrocyclic compounds well known for their interesting binding properties. In this article selected macrocyclic compounds bearing azo group(s) are comprehensively described. Here, the relationship between compounds' structure and their properties (as e.g. ability to guest complexation, supramolecular structure formation, switching and motion) is reviewed.
Collapse
Affiliation(s)
- Ewa Wagner-Wysiecka
- Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza Street 11/12, 80-233 Gdańsk, Poland
| | - Natalia Łukasik
- Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza Street 11/12, 80-233 Gdańsk, Poland
| | - Jan F Biernat
- Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza Street 11/12, 80-233 Gdańsk, Poland
| | - Elżbieta Luboch
- Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza Street 11/12, 80-233 Gdańsk, Poland
| |
Collapse
|