1
|
Griwatz JH, Campi CE, Kunz A, Wegner HA. In-situ Oxidation and Coupling of Anilines towards Unsymmetric Azobenzenes Using Flow Chemistry. CHEMSUSCHEM 2024; 17:e202301714. [PMID: 38240749 DOI: 10.1002/cssc.202301714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/17/2024] [Indexed: 02/10/2024]
Abstract
Molecular switches, especially azobenzenes, are used in numerous applications, such as molecular solar thermal storage (MOST) systems and photopharmacology. The Baeyer-Mills reaction of anilines and nitrosobenzenes has been established as an efficient synthetic method for non-symmetric azobenzenes. However, nitrosobenzenes are not stable, depending on their substitution pattern and pose a health risk. An in-situ oxidation of anilines with Oxone® was optimized under continuous flow conditions avoiding isolation and contact. The in-situ generated nitrosobenzene derivatives were subjected to a telescoped Baeyer-Mills reaction in flow. That way azobenzenes with a broad substituent spectrum were made accessible.
Collapse
Affiliation(s)
- Jan H Griwatz
- Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
- Center for Materials Research, Justus Liebig University Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany
| | - Chiara E Campi
- Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Anne Kunz
- Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
- Center for Materials Research, Justus Liebig University Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany
| | - Hermann A Wegner
- Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
- Center for Materials Research, Justus Liebig University Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany
| |
Collapse
|
2
|
Li B, Hu Y, Tochtrop GP. An Acid-Controlled Method for the Regioselective Functionalization of Anilines over Aliphatic Amines. Chemistry 2023; 29:e202301336. [PMID: 37527973 DOI: 10.1002/chem.202301336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/11/2023] [Accepted: 07/25/2023] [Indexed: 08/03/2023]
Abstract
Regioselective transformations at similar functional groups are of paramount importance in organic synthesis. Traditional strategies towards regioselective functionalization include serial protection/deprotection and sequential synthesis. Modern organic synthesis emphasizes pathway efficiency and protecting group free routes with a goal of exploiting inherent differences in reactivity. This study reports a method for the regioselective functionalization of anilines over aliphatic amines. Utilizing classic conditions for the Baeyer-Mills reaction, anilines were shown to react preferentially in the presence of aliphatic amines. Subsequently, this principle of reactivity was extended to other electrophiles and conditions.
Collapse
Affiliation(s)
- Bowen Li
- Department of Chemistry, Case Western Reserve University Millis Hall 410, 2080 Adelbert Road, Cleveland, Ohio, 44106, USA
| | - Yulun Hu
- Department of Chemistry, Case Western Reserve University Millis Hall 410, 2080 Adelbert Road, Cleveland, Ohio, 44106, USA
| | - Gregory P Tochtrop
- Department of Chemistry, Case Western Reserve University Millis Hall 410, 2080 Adelbert Road, Cleveland, Ohio, 44106, USA
| |
Collapse
|
3
|
Barbor JP, Nair VN, Sharp KR, Lohrey TD, Dibrell SE, Shah TK, Walsh MJ, Reisman SE, Stoltz BM. Development of a Nickel-Catalyzed N-N Coupling for the Synthesis of Hydrazides. J Am Chem Soc 2023. [PMID: 37413695 PMCID: PMC10360072 DOI: 10.1021/jacs.3c04834] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
A nickel-catalyzed N-N cross-coupling for the synthesis of hydrazides is reported. O-Benzoylated hydroxamates were efficiently coupled with a broad range of aryl and aliphatic amines via nickel catalysis to form hydrazides in an up to 81% yield. Experimental evidence implicates the intermediacy of electrophilic Ni-stabilized acyl nitrenoids and the formation of a Ni(I) catalyst via silane-mediated reduction. This report constitutes the first example of an intermolecular N-N coupling compatible with secondary aliphatic amines.
Collapse
Affiliation(s)
- Jay P Barbor
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Vaishnavi N Nair
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Kimberly R Sharp
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Trevor D Lohrey
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Sara E Dibrell
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Tejas K Shah
- Corteva Agriscience, 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Martin J Walsh
- Corteva Agriscience, 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Sarah E Reisman
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Brian M Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| |
Collapse
|
4
|
Orvoš J, Pančík F, Fischer R. Facile One‐Step Oxidation of
N
‐Boc‐Protected Diarylhydrazines to Diaryldiazenes with (Diacetoxyiodo)benzene under Mild Conditions. European J Org Chem 2023. [DOI: 10.1002/ejoc.202300049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Affiliation(s)
- Jakub Orvoš
- Institute of Organic Chemistry Catalysis and Petrochemistry Slovak University of Technology in Bratislava Radlinského 9 812 37 Bratislava Slovak Republic
| | - Filip Pančík
- Institute of Chemistry Slovak Academy of Sciences Dúbravská cesta 9 845 38 Bratislava Slovak Republic
| | - Róbert Fischer
- Institute of Organic Chemistry Catalysis and Petrochemistry Slovak University of Technology in Bratislava Radlinského 9 812 37 Bratislava Slovak Republic
| |
Collapse
|
5
|
Dudek M, Kaczmarek-Kędziera A, Deska R, Trojnar J, Jasik P, Młynarz P, Samoć M, Matczyszyn K. Linear and Nonlinear Optical Properties of Azobenzene Derivatives Modified with an (Amino)naphthalene Moiety. J Phys Chem B 2022; 126:6063-6073. [PMID: 35944057 PMCID: PMC9393860 DOI: 10.1021/acs.jpcb.2c03078] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The design of two-photon absorbing azobenzene (AB) derivatives has received much attention; however, the two-photon absorption (2PA) properties of bis-conjugated azobenzene systems are relatively less explored. Here, we present the synthesis of six azobenzene derivatives and three bis-azobenzenes substituted (or not) at para position(s) with one or two amino group(s). Their linear and nonlinear absorption properties are studied experimentally and theoretically. The switching behavior and thermal stability of the Z-isomer are studied for unsubstituted mono- (1a, 2a) and bis-azobenzene (3a) compounds, showing that when the length of the π system increases, the half-life of the Z-isomer decreases. Moreover, along with the increase of π-conjugation, the photochromic characteristics are impaired and the photostationary state (PSS) related to E-Z photoisomerization is composed of 89% of the Z-isomer for 2a and 26% of the Z-isomer for 3a. Importantly, the 2PA cross-section increases almost five-fold on extending the π-conjugation (2a vs 3a) and by about one order of magnitude when comparing two systems: the unsubstituted π-electron one (2a, 3a) with D-π-D (2c, 3c). This work clarifies the contribution of π-conjugation and substituent effects to the linear and nonlinear optical properties of mono- and bis-azobenzene compounds based on the experimental and theoretical approaches.
Collapse
Affiliation(s)
- Marta Dudek
- Institute of Advanced Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Anna Kaczmarek-Kędziera
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland
| | - Radosław Deska
- Institute of Advanced Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Jakub Trojnar
- Institute of Advanced Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Patryk Jasik
- Faculty of Applied Physics and Mathematics and BioTechMed Center, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Piotr Młynarz
- Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Marek Samoć
- Institute of Advanced Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Katarzyna Matczyszyn
- Institute of Advanced Materials, Faculty of Chemistry, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| |
Collapse
|
6
|
Griwatz JH, Kunz A, Wegner HA. Continuous flow synthesis of azobenzenes via Baeyer–Mills reaction. Beilstein J Org Chem 2022; 18:781-787. [PMID: 35859625 PMCID: PMC9263553 DOI: 10.3762/bjoc.18.78] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/15/2022] [Indexed: 12/31/2022] Open
Abstract
Azobenzene, as one of the most prominent molecular switches, is featured in many applications ranging from photopharmacology to information or energy storage. In order to easily and reproducibly synthesize non-symmetric substituted azobenzenes in an efficient way, especially on a large scale, the commonly used Baeyer–Mills coupling reaction was adopted to a continuous flow setup. The versatility was demonstrated with a scope of 20 substances and the scalability of this method exemplified by the synthesis of >70 g of an azobenzene derivative applied in molecular solar thermal storage (MOST) systems.
Collapse
Affiliation(s)
- Jan H Griwatz
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Center for Material Research (ZfM/LaMa), Justus Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
| | - Anne Kunz
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Center for Material Research (ZfM/LaMa), Justus Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
| | - Hermann A Wegner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Center for Material Research (ZfM/LaMa), Justus Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
| |
Collapse
|
7
|
Shangguan Z, Sun W, Zhang ZY, Fang D, Wang Z, Wu S, Deng C, Huang X, He Y, Wang R, Li T, Moth-Poulsen K, Li T. A rechargeable molecular solar thermal system below 0 °C. Chem Sci 2022; 13:6950-6958. [PMID: 35774182 PMCID: PMC9200126 DOI: 10.1039/d2sc01873j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/15/2022] [Indexed: 01/12/2023] Open
Abstract
An optimal temperature is crucial for a broad range of applications, from chemical transformations, electronics, and human comfort, to energy production and our whole planet. Photochemical molecular thermal energy storage systems coupled with phase change behavior (MOST-PCMs) offer unique opportunities to capture energy and regulate temperature. Here, we demonstrate how a series of visible-light-responsive azopyrazoles couple MOST and PCMs to provide energy capture and release below 0 °C. The system is charged by blue light at -1 °C, and discharges energy in the form of heat under green light irradiation. High energy density (0.25 MJ kg-1) is realized through co-harvesting visible-light energy and thermal energy from the environment through phase transitions. Coatings on glass with photo-controlled transparency are prepared as a demonstration of thermal regulation. The temperature difference between the coatings and the ice cold surroundings is up to 22.7 °C during the discharging process. This study illustrates molecular design principles that pave the way for MOST-PCMs that can store natural sunlight energy and ambient heat over a wide temperature range.
Collapse
Affiliation(s)
- Zhichun Shangguan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication, Ministry of Education, Shanghai Jiao Tong University Shanghai 200240 China
| | - Wenjin Sun
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication, Ministry of Education, Shanghai Jiao Tong University Shanghai 200240 China
| | - Zhao-Yang Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication, Ministry of Education, Shanghai Jiao Tong University Shanghai 200240 China
| | - Dong Fang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication, Ministry of Education, Shanghai Jiao Tong University Shanghai 200240 China
| | - Zhihang Wang
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology Gothenburg 41296 Sweden
| | - Si Wu
- Research Center of Solar Power & Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Chao Deng
- College of Chemistry & Materials Engineering, Wenzhou University Wenzhou 325027 Zhejiang China
| | - Xianhui Huang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication, Ministry of Education, Shanghai Jiao Tong University Shanghai 200240 China
| | - Yixin He
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication, Ministry of Education, Shanghai Jiao Tong University Shanghai 200240 China
| | - Ruzhu Wang
- Research Center of Solar Power & Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Tingxian Li
- Research Center of Solar Power & Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Kasper Moth-Poulsen
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology Gothenburg 41296 Sweden
- The Institute of Materials Science of Barcelona, ICMAB-CSIC 08193 Bellaterra Barcelona Spain
- Catalan Institution for Research & Advanced Studies, ICREA Pg. Lluís Companys 23 Barcelona Spain
| | - Tao Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication, Ministry of Education, Shanghai Jiao Tong University Shanghai 200240 China
| |
Collapse
|