1
|
Abstract
Organoboron acids are stable, organic-soluble Lewis acids with potential application as catalysts for a wide variety of chemical reactions. In this review, we summarize the utility of boronic and borinic acids, as well as boric acid, as catalysts for organic transformations. Typically, the catalytic processes exploit the Lewis acidity of trivalent boron, enabling the reversible formation of a covalent bond with oxygen. Our focus is on recent developments in the catalysis of dehydration, carbonyl condensation, acylation, alkylation, and cycloaddition reactions. We conclude that organoboron acids have a highly favorable prospectus as the source of new catalysts.
Collapse
Affiliation(s)
- Brian J Graham
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Ronald T Raines
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
2
|
Janda BA, Tran JA, Chang DK, Nerhood GC, Maduka Ogba O, Liberman-Martin AL. Carbodiimide and Isocyanate Hydroboration by a Cyclic Carbodiphosphorane Catalyst. Chemistry 2024; 30:e202303095. [PMID: 37847813 DOI: 10.1002/chem.202303095] [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: 09/23/2023] [Revised: 10/13/2023] [Accepted: 10/17/2023] [Indexed: 10/19/2023]
Abstract
We report hydroboration of carbodiimide and isocyanate substrates catalyzed by a cyclic carbodiphosphorane catalyst. The cyclic carbodiphosphorane outperformed the other Lewis basic carbon species tested, including other zerovalent carbon compounds, phosphorus ylides, an N-heterocyclic carbene, and an N-heterocyclic olefin. Hydroborations of seven carbodiimides and nine isocyanates were performed at room temperature to form N-boryl formamidine and N-boryl formamide products. Intermolecular competition experiments demonstrated the selective hydroboration of alkyl isocyanates over carbodiimide and ketone substrates. DFT calculations support a proposed mechanism involving activation of pinacolborane by the carbodiphosphorane catalyst, followed by hydride transfer and B-N bond formation.
Collapse
Affiliation(s)
- Ben A Janda
- Chemistry and Biochemistry Program, Schmid College of Science and Technology, Chapman University, 450 North Center Street, Orange, CA 92866, USA
| | - Julie A Tran
- Chemistry and Biochemistry Program, Schmid College of Science and Technology, Chapman University, 450 North Center Street, Orange, CA 92866, USA
| | - Daniel K Chang
- Chemistry and Biochemistry Program, Schmid College of Science and Technology, Chapman University, 450 North Center Street, Orange, CA 92866, USA
| | - Gabriela C Nerhood
- Chemistry and Biochemistry Program, Schmid College of Science and Technology, Chapman University, 450 North Center Street, Orange, CA 92866, USA
| | - O Maduka Ogba
- Chemistry and Biochemistry Program, Schmid College of Science and Technology, Chapman University, 450 North Center Street, Orange, CA 92866, USA
| | - Allegra L Liberman-Martin
- Chemistry and Biochemistry Program, Schmid College of Science and Technology, Chapman University, 450 North Center Street, Orange, CA 92866, USA
| |
Collapse
|
3
|
Kumar Chouhan K, Nad P, Mukherjee A. Dual Role of TiO(acac) 2 as a Reagent and an Activator/Catalyst: A Study on the Solvent Dependent Product Formation. Chem Asian J 2023; 18:e202300738. [PMID: 37782026 DOI: 10.1002/asia.202300738] [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: 08/22/2023] [Revised: 09/30/2023] [Accepted: 10/02/2023] [Indexed: 10/03/2023]
Abstract
The dual operation of a chemical species in synthetic chemistry is an intriguing and relatively unexplored phenomenon. The application of such a species is expected to reduce the use of multiple reaction partners and catalysts/activators. Herein, we report a simple and easy-to-use protocol for the twin application of TiO(acac)2 , as a reagent and an activator to synthesize β-enamino ketones with amines in acetonitrile. The same early transition metal precursor when employed in N,N-dimethylformamide with the amines, resulted in the formation of the substituted amides. Both reactions were explored with various substrates to check the viability of the present protocol. Moreover, experimental studies were conducted to understand the mechanism of both reactions.
Collapse
Affiliation(s)
- Kishor Kumar Chouhan
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, 492015, Chhattisgarh, India
| | - Pinaki Nad
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, 492015, Chhattisgarh, India
| | - Arup Mukherjee
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, 492015, Chhattisgarh, India
| |
Collapse
|
4
|
Pan B, Huang DM, Sun HT, Song SN, Su XB. Heterocyclic Boron Acid Catalyzed Dehydrative Amidation of Aliphatic/Aromatic Carboxylic Acids with Amines. J Org Chem 2023. [PMID: 36791405 DOI: 10.1021/acs.joc.2c02515] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
A commercially available and versatile dehydrative amidation catalyst, featuring a thianthrene boron acid structure, has been developed. The catalyst shows high catalytic activity to both aliphatic and less reactive aromatic carboxylic acid substrates, including several bioactive or clinical molecules with a carboxylic acid group.
Collapse
Affiliation(s)
- Bin Pan
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Weifang University of Science and Technology, Shouguang 262700, China
| | - Ding-Min Huang
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Hao-Tian Sun
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Sheng-Nan Song
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Xian-Bin Su
- State Key Laboratory of Material-Oriented Chemical Engineering and College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
| |
Collapse
|
5
|
Zhang Y, Dai X, Wang J, Liang J, Rabeah J, Tian X, Yao X, Wang Y, Pang S. In Situ-Generated Cu I Catalytic System for Oxidative N-Formylation of N-Heterocycles and Acyclic Amines with Methanol. CHEMSUSCHEM 2023; 16:e202202104. [PMID: 36478405 DOI: 10.1002/cssc.202202104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/06/2022] [Indexed: 06/17/2023]
Abstract
The development of a sustainable and simple catalytic system for N-formylation of N-heterocycles with methanol by direct coupling remains a challenge, owing to many competing side reactions, given the sensitivity of N-heterocycles to many catalytic oxidation or dehydrogenation systems. This work concerns the development of an in situ-generated CuI catalytic system for oxidative N-formylation of N-heterocycles with methanol that is based on the case study of a more typical 1,2,3,4-tetrahydroquinoline as substrate. Aside from N-heterocycles, some acyclic amines are also transformed into the corresponding N-formamides in moderate yields. Furthermore, a probable reaction mechanism and reaction pathway are proposed and extension of work based on some findings leads to a demonstration that the formed ⋅O2 - and ⋅OOH radicals in the catalytic system is related to the formation of undesired tar-like products.
Collapse
Affiliation(s)
- Yujing Zhang
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, 730070, Lanzhou, Gansu, P. R. China
| | - Xingchao Dai
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT), Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Jixue Wang
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, 730070, Lanzhou, Gansu, P. R. China
| | - Junxi Liang
- Chemical Engineering Institute, Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Northwest Minzu University, 730030, Lanzhou, Gansu, P. R. China
| | - Jabor Rabeah
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT), Albert-Einstein-Str. 29a, 18059, Rostock, Germany
| | - Xia Tian
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, 730070, Lanzhou, Gansu, P. R. China
| | - Xiaoqiang Yao
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, 730070, Lanzhou, Gansu, P. R. China
| | - Yanbin Wang
- Chemical Engineering Institute, Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Northwest Minzu University, 730030, Lanzhou, Gansu, P. R. China
| | - Shaofeng Pang
- Chemical Engineering Institute, Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Northwest Minzu University, 730030, Lanzhou, Gansu, P. R. China
| |
Collapse
|
6
|
Zivkovic FG, D-T Nielsen C, Schoenebeck F. Access to N-CF 3 Formamides by Reduction of N-CF 3 Carbamoyl Fluorides. Angew Chem Int Ed Engl 2022; 61:e202213829. [PMID: 36308723 PMCID: PMC10099374 DOI: 10.1002/anie.202213829] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Indexed: 11/06/2022]
Abstract
The departure into unknown chemical space is essential for the discovery of new properties and function. We herein report the first synthetic access to N-trifluoromethylated formamides. The method involves the reduction of bench-stable NCF3 carbamoyl fluorides and is characterized by operational simplicity and mildness, tolerating a broad range of functional groups as well as stereocenters. The newly made N-CF3 formamide motif proved to be highly robust and compatible with diverse chemical transformations, underscoring its potential as building block in complex functional molecules.
Collapse
Affiliation(s)
- Filip G Zivkovic
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Christian D-T Nielsen
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Franziska Schoenebeck
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| |
Collapse
|
7
|
Chouhan KK, Chowdhury D, Mukherjee A. Transamidation of aromatic amines with formamides using cyclic dihydrogen tetrametaphosphate. Org Biomol Chem 2022; 20:7929-7935. [PMID: 36155708 DOI: 10.1039/d2ob00882c] [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
Amide fragments are found to be one of the key constituents in a wide range of natural products and pharmacologically active compounds. Herein, we report a simple and efficient procedure for transamidation with a cyclic dihydrogen tetrametaphosphate. The protocol is simple, does not require any additives, and encompasses a broad substrate scope. To comprehend the mechanism of the present methodology, detailed spectroscopic and kinetic studies were undertaken.
Collapse
Affiliation(s)
- Kishor Kumar Chouhan
- Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur-492015, Chhattisgarh, India.
| | - Deep Chowdhury
- Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur-492015, Chhattisgarh, India.
| | - Arup Mukherjee
- Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur-492015, Chhattisgarh, India.
| |
Collapse
|
8
|
Casti F, Mocci R, Porcheddu A. From amines to (form)amides: a simple and successful mechanochemical approach. Beilstein J Org Chem 2022; 18:1210-1216. [PMID: 36158174 PMCID: PMC9490066 DOI: 10.3762/bjoc.18.126] [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: 05/20/2022] [Accepted: 09/01/2022] [Indexed: 01/01/2023] Open
Abstract
Two easily accessible routes for preparing an array of formylated and acetylated amines under mechanochemical conditions are presented. The two methodologies exhibit complementary features as they enable the derivatization of aliphatic and aromatic amines.
Collapse
Affiliation(s)
- Federico Casti
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Cagliari, Italy
| | - Rita Mocci
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Cagliari, Italy
| | - Andrea Porcheddu
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Cagliari, Italy
| |
Collapse
|
9
|
Gudun KA, Tussupbayev S, Slamova A, Khalimon AY. Hydroboration of isocyanates: cobalt-catalyzed vs. catalyst-free approaches. Org Biomol Chem 2022; 20:6821-6830. [PMID: 35968649 DOI: 10.1039/d2ob01192a] [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
Hydroboration of isocyanates with HBPin was demonstrated using both catalytic and catalyst-free approaches. In arene solvents, the reactions employed the commercially available and bench-stable Co(acac)2/dpephos (dpephos = bis[(2-diphenylphosphino)phenyl] ether) pre-catalyst and proved chemodivergent, showing the formation of either formamides or N-methylamines, depending on the concentration of HBPin and the reaction conditions used. Catalytic monohydroboration of isocyanates to formamides was found to be highly chemoselective, tolerating alkenes, alkynes, aryl halides, esters, carboxamides, nitriles, nitroarenes and heteroaromatic functionalities. The catalyst-free hydroboration reactions have been demonstrated in neat HBPin. Whereas monohydroboration proved less selective compared with Co(acac)2/dpephos-catalyzed transformations, selective deoxygenative hydroboration of isocyanates to N-methylamines was observed under catalyst-free conditions.
Collapse
Affiliation(s)
- Kristina A Gudun
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, 53 Kabanbay Batyr. Avenue, Nur-Sultan 010000, Kazakhstan.
| | - Samat Tussupbayev
- Institute of Polymer Materials and Technologies, 3/1 Atyrau 1, Almaty 050019, Kazakhstan
| | - Ainur Slamova
- Core Facilities, Office of the Provost, Nazarbayev University, 53 Kabanbay Batyr. Avenue, Nur-Sultan 010000, Kazakhstan
| | - Andrey Y Khalimon
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, 53 Kabanbay Batyr. Avenue, Nur-Sultan 010000, Kazakhstan. .,The Environment and Resource Efficiency Cluster (EREC), Nazarbayev University, 53 Kabanbay Batyr. Avenue, Nur-Sultan 010000, Kazakhstan
| |
Collapse
|
10
|
Gatin‐Fraudet B, Pucher M, Le Saux T, Doisneau G, Bourdreux Y, Jullien L, Vauzeilles B, Guianvarc'h D, Urban D. Hydrogen Peroxide‐Responsive Triggers Based on Borinic Acids: Molecular Insights into the Control of Oxidative Rearrangement. Chemistry 2022; 28:e202201543. [DOI: 10.1002/chem.202201543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Indexed: 01/06/2023]
Affiliation(s)
- Blaise Gatin‐Fraudet
- Université Paris-Saclay, CNRS Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182 91405 Orsay France
- Université Paris-Saclay, CNRS Institut de Chimie des Substances Naturelles, UPR 2301 91198 Gif-sur-Yvette France
| | - Mathilde Pucher
- Université Paris-Saclay, CNRS Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182 91405 Orsay France
| | - Thomas Le Saux
- PASTEUR, Département de chimie École Normale Supérieure PSL University, Sorbonne Université, CNRS 75005 Paris France
| | - Gilles Doisneau
- Université Paris-Saclay, CNRS Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182 91405 Orsay France
| | - Yann Bourdreux
- Université Paris-Saclay, CNRS Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182 91405 Orsay France
| | - Ludovic Jullien
- PASTEUR, Département de chimie École Normale Supérieure PSL University, Sorbonne Université, CNRS 75005 Paris France
| | - Boris Vauzeilles
- Université Paris-Saclay, CNRS Institut de Chimie des Substances Naturelles, UPR 2301 91198 Gif-sur-Yvette France
| | - Dominique Guianvarc'h
- Université Paris-Saclay, CNRS Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182 91405 Orsay France
| | - Dominique Urban
- Université Paris-Saclay, CNRS Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182 91405 Orsay France
| |
Collapse
|
11
|
Thimmegowda NR, Rangappa KS, Jagadeesha GS, Mantelingu K. Microwave-Assisted, Metal-Free, Chemoselective N-Formylation of Amines using 2-Formyl-3-methyl-1H-imidazol-3-ium Iodide and In Situ Synthesis of Benzimidazole and Isocyanides. SYNOPEN 2022. [DOI: 10.1055/s-0041-1737605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
AbstractAn efficient, environmentally benign, chemoselective, microwave-assisted N-formylation protocol of aromatic, aliphatic, alicyclic, benzylic amines, inactivated aromatic amines and sterically demanding heterocyclic amines using 2-formyl-1,3-dimethyl-1H-imidazol-3-ium iodide has been developed. This affords a series of N-substituted formamides with good to excellent yields (23 examples, 53–96% yield) and can be readily scaled. The methodology can be further extended to synthesize benzimidazole and isocyanide derivatives.
Collapse
|
12
|
Gatin-Fraudet B, Ottenwelter R, Le Saux T, Norsikian S, Pucher M, Lombès T, Baron A, Durand P, Doisneau G, Bourdreux Y, Iorga BI, Erard M, Jullien L, Guianvarc'h D, Urban D, Vauzeilles B. Evaluation of borinic acids as new, fast hydrogen peroxide-responsive triggers. Proc Natl Acad Sci U S A 2021; 118:e2107503118. [PMID: 34873034 PMCID: PMC8685692 DOI: 10.1073/pnas.2107503118] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/11/2021] [Indexed: 11/18/2022] Open
Abstract
Hydrogen peroxide (H2O2) is responsible for numerous damages when overproduced, and its detection is crucial for a better understanding of H2O2-mediated signaling in physiological and pathological processes. For this purpose, various "off-on" small fluorescent probes relying on a boronate trigger have been prepared, and this design has also been involved in the development of H2O2-activated prodrugs or theranostic tools. However, this design suffers from slow kinetics, preventing activation by H2O2 with a short response time. Therefore, faster H2O2-reactive groups are awaited. To address this issue, we have successfully developed and characterized a prototypic borinic-based fluorescent probe containing a coumarin scaffold. We determined its in vitro kinetic constants toward H2O2-promoted oxidation. We measured 1.9 × 104 m-1⋅s-1 as a second-order rate constant, which is 10,000-fold faster than its well-established boronic counterpart (1.8 m-1⋅s-1). This improved reactivity was also effective in a cellular context, rendering borinic acids an advantageous trigger for H2O2-mediated release of effectors such as fluorescent moieties.
Collapse
Affiliation(s)
- Blaise Gatin-Fraudet
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Gif-sur-Yvette 91198, France
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182, Orsay 91405, France
| | - Roxane Ottenwelter
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Gif-sur-Yvette 91198, France
| | - Thomas Le Saux
- PASTEUR, Département de Chimie, École Normale Supérieure, Université Paris Sciences et Lettres, CNRS, Sorbonne Université, Paris 75005, France
| | - Stéphanie Norsikian
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Gif-sur-Yvette 91198, France
| | - Mathilde Pucher
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182, Orsay 91405, France
| | - Thomas Lombès
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Gif-sur-Yvette 91198, France
| | - Aurélie Baron
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Gif-sur-Yvette 91198, France
| | - Philippe Durand
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Gif-sur-Yvette 91198, France
| | - Gilles Doisneau
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182, Orsay 91405, France
| | - Yann Bourdreux
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182, Orsay 91405, France
| | - Bogdan I Iorga
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Gif-sur-Yvette 91198, France
| | - Marie Erard
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, UMR CNRS 8000, Orsay 91405, France
| | - Ludovic Jullien
- PASTEUR, Département de Chimie, École Normale Supérieure, Université Paris Sciences et Lettres, CNRS, Sorbonne Université, Paris 75005, France
| | - Dominique Guianvarc'h
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182, Orsay 91405, France
| | - Dominique Urban
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182, Orsay 91405, France;
| | - Boris Vauzeilles
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Gif-sur-Yvette 91198, France;
| |
Collapse
|
13
|
Jiang J, Li L, Zhang L, Chen Q, Sun H, Liao S, Li C, Zhang L. Organophosphoric Acid Promoted Transamidation: Using
N
,
N
‐Dimethylformamide and
N
,
N
‐Dimethylacetamide as the Acyl Sources. ChemistrySelect 2021. [DOI: 10.1002/slct.202103932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jian Jiang
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University 550004 Guiyang China
| | - Linlin Li
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University 550004 Guiyang China
| | - Ling Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University 550004 Guiyang China
| | - Qian Chen
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University 550004 Guiyang China
| | - Hao Sun
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University 550004 Guiyang China
| | - Shanggao Liao
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University 550004 Guiyang China
| | - Chun Li
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University 550004 Guiyang China
| | - Lin Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences Guizhou Medical University 550004 Guiyang China
| |
Collapse
|
14
|
Kumar A, Sharma P, Sharma N, Kumar Y, Mahajan D. Catalyst free N-formylation of aromatic and aliphatic amines exploiting reductive formylation of CO 2 using NaBH 4. RSC Adv 2021; 11:25777-25787. [PMID: 35478907 PMCID: PMC9037105 DOI: 10.1039/d1ra04848a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 07/20/2021] [Indexed: 11/29/2022] Open
Abstract
Herein, we report a sustainable approach for N-formylation of aromatic as well as aliphatic amines using sodium borohydride and carbon dioxide gas. The developed approach is catalyst free, and does not need pressure or a specialized reaction assembly. The reductive formylation of CO2 with sodium borohydride generates formoxy borohydride species in situ, as confirmed by 1H and 11B NMR spectroscopy. The in situ formation of formoxy borohydride species is prominent in formamide based solvents and is critical for the success of the N-formylation reactions. The formoxy borohydride is also found to promote transamidation reactions as a competitive pathway along with reductive functionalization of CO2 with amine leading to N-formylation of amines.
Collapse
Affiliation(s)
- Arun Kumar
- Medicinal Chemistry and Pharmacology Lab, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster 3rd Milestone Faridabad-Gurgaon Expressway Faridabad-121001 India
| | - Pankaj Sharma
- Medicinal Chemistry and Pharmacology Lab, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster 3rd Milestone Faridabad-Gurgaon Expressway Faridabad-121001 India
| | - Nidhi Sharma
- Medicinal Chemistry and Pharmacology Lab, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster 3rd Milestone Faridabad-Gurgaon Expressway Faridabad-121001 India
| | - Yashwant Kumar
- Medicinal Chemistry and Pharmacology Lab, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster 3rd Milestone Faridabad-Gurgaon Expressway Faridabad-121001 India
| | - Dinesh Mahajan
- Medicinal Chemistry and Pharmacology Lab, Translational Health Science and Technology Institute (THSTI), NCR Biotech Science Cluster 3rd Milestone Faridabad-Gurgaon Expressway Faridabad-121001 India
| |
Collapse
|
15
|
Nad P, Mukherjee A. Acceptorless Dehydrogenative Coupling Reactions by Manganese Pincer Complexes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100249] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pinaki Nad
- Department of Chemistry Indian Institute of Technology Bhilai GEC Campus Sejbahar Raipur, Chhattisgarh 492015 India
| | - Arup Mukherjee
- Department of Chemistry Indian Institute of Technology Bhilai GEC Campus Sejbahar Raipur, Chhattisgarh 492015 India
| |
Collapse
|
16
|
Dan D, Chen F, Zhao W, Yu H, Han S, Wei Y. Chromium-catalysed efficient N-formylation of amines with a recyclable polyoxometalate-supported green catalyst. Dalton Trans 2021; 50:90-94. [PMID: 33140793 DOI: 10.1039/d0dt03300f] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and efficient protocol for the formylation of amines with formic acid, catalyzed by a polyoxometalate-based chromium catalyst, is described. Notably, this method shows excellent activity and chemoselectivity for the formylation of primary amines; diamines have also been successfully employed. Importantly, the chromium catalyst is potentially non-toxic, environmentally benign and safer than the widely used high valence chromium catalysts such as CrO3 and K2Cr2O7. The catalyst can be recycled several times with a negligible impact on activity. Finally, a plausible mechanism is provided based on the observation of intermediate and control experiments.
Collapse
Affiliation(s)
- Demin Dan
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, P.R. China.
| | | | | | | | | | | |
Collapse
|
17
|
Maity J, Chowdhury AH, Islam SM, Bala T. A facile route to transfer Cu nanoparticles to organic medium for better stabilization and improved photocatalytic activity towards N-formylation reaction. NANOTECHNOLOGY 2020; 31:395605. [PMID: 32438351 DOI: 10.1088/1361-6528/ab9574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cu nanoparticles were prepared in an aqueous phase by means of a simple reduction-route using sodium borohydride as the reducing agent in the presence of ascorbic acid and polyvinylpyrrolidone (PVP). The hydrosol of the Cu nanoparticles deteriorated within a day. It compelled to initiate a scheme to stabilize the nanoparticles for a long period of time. Phase transfer to organic solvents using Benzyldimethylstearylammonium chloride (BDSAC) as a phase transfer agent was found to be an effective path in this respect. BDSAC performed the dual role of dragging the Cu nanoparticles from water to organic solvent and also acted as a capping agent along with PVP for better stabilization of Cu nanoparticles. The organosol of the Cu nanoparticles exhibited excellent stability and promising catalytic activity towards N-formylation reactions on a number of amine substrates in presence of visible green LED light. The yield and reusability of the catalyst were promising. All the samples were thoroughly characterized by UV-visible spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, energy dispersive analysis of x-rays, x-ray photoelectron spectroscopy and thermo gravimetric analysis.
Collapse
Affiliation(s)
- Jayeta Maity
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata 700009, India
| | | | | | | |
Collapse
|
18
|
Kang B, Yasuno Y, Okamura H, Sakai A, Satoh T, Kuse M, Shinada T. N-Acylcarbazole as a Selective Transamidation Reagent. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Bubwoong Kang
- Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Yoko Yasuno
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Hironori Okamura
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Asumi Sakai
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Tetsuya Satoh
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Masaki Kuse
- Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Tetsuro Shinada
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| |
Collapse
|
19
|
Huang HY, Lin XY, Yen SY, Liang CF. Facile access to N-formyl imide as an N-formylating agent for the direct synthesis of N-formamides, benzimidazoles and quinazolinones. Org Biomol Chem 2020; 18:5726-5733. [PMID: 32666985 DOI: 10.1039/d0ob01080d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
N-Formamide synthesis using N-formyl imide with primary and secondary amines with catalytic amounts of p-toluenesulfonic acid monohydrate (TsOH·H2O) is described. This reaction is performed in water without the use of surfactants. Moreover, N-formyl imide is efficiently synthesized using acylamidines with TsOH·H2O in water. In addition, N-formyl imide was successfully used as a carbonyl source in the synthesis of benzimidazole and quinazolinone derivatives. Notable features of N-formylation of amines by using N-formyl imide include operational simplicity, oxidant- and metal-free conditions, structurally diverse products, and easy applicability to gram-scale operation.
Collapse
Affiliation(s)
- Hsin-Yi Huang
- Department of Chemistry, National Chung Hsing University, Taichung, 402, Taiwan.
| | | | | | | |
Collapse
|
20
|
Chen J, Xia Y, Lee S. Transamidation for the Synthesis of Primary Amides at Room Temperature. Org Lett 2020; 22:3504-3508. [DOI: 10.1021/acs.orglett.0c00958] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jiajia Chen
- Department of Chemistry, Chonnam National University, Gwangju, 61186, Republic of Korea
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang Province 325035, P. R. China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang Province 325035, P. R. China
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| |
Collapse
|
21
|
Recent Advances in Metal-Catalyzed Alkyl–Boron (C(sp3)–C(sp2)) Suzuki-Miyaura Cross-Couplings. Catalysts 2020. [DOI: 10.3390/catal10030296] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Boron chemistry has evolved to become one of the most diverse and applied fields in organic synthesis and catalysis. Various valuable reactions such as hydroborylations and Suzuki–Miyaura cross-couplings (SMCs) are now considered as indispensable methods in the synthetic toolbox of researchers in academia and industry. The development of novel sterically- and electronically-demanding C(sp3)–Boron reagents and their subsequent metal-catalyzed cross-couplings attracts strong attention and serves in turn to expedite the wheel of innovative applications of otherwise challenging organic adducts in different fields. This review describes the significant progress in the utilization of classical and novel C(sp3)–B reagents (9-BBN and 9-MeO-9-BBN, trifluoroboronates, alkylboranes, alkylboronic acids, MIDA, etc.) as coupling partners in challenging metal-catalyzed C(sp3)–C(sp2) cross-coupling reactions, such as B-alkyl SMCs after 2001.
Collapse
|
22
|
|
23
|
Xu ZW, Xu WY, Pei XJ, Tang F, Feng YS. An efficient method for the N-formylation of amines under catalyst- and additive-free conditions. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
24
|
Zhang F, Li L, Ma J, Gong H. MoS 2-Catalyzed transamidation reaction. Sci Rep 2019; 9:2536. [PMID: 30796297 PMCID: PMC6385372 DOI: 10.1038/s41598-019-39210-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 01/11/2019] [Indexed: 11/12/2022] Open
Abstract
The MoS2-catalyzed transamidation reaction with high yields using N,N-dimethylformamide and other amides as carbonyl sources is developed here. The protocol is simple, does not require any additive such as acid, base, ligand, etc., and encompasses a broad substrate scope for primary, secondary and heterocyclic amines. Moreover, the acetylation and propanylation of amines also can be achieved with good to excellent yield by this strategy.
Collapse
Affiliation(s)
- Feng Zhang
- College of Science, Hunan Agricultural University, Changsha, 410128, China.
| | - Lesong Li
- The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Juan Ma
- The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Hang Gong
- The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, China.
| |
Collapse
|
25
|
Yu H, Wu Z, Wei Z, Zhai Y, Ru S, Zhao Q, Wang J, Han S, Wei Y. N-formylation of amines using methanol as a potential formyl carrier by a reusable chromium catalyst. Commun Chem 2019. [DOI: 10.1038/s42004-019-0109-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
|
26
|
Sureshbabu P, Azeez S, Chaudhary P, Kandasamy J. tert-Butyl nitrite promoted transamidation of secondary amides under metal and catalyst free conditions. Org Biomol Chem 2019; 17:845-850. [DOI: 10.1039/c8ob03010c] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transamidation of secondary amides with various amines is demonstrated using tert-butyl nitrite. The reaction proceeds through the N-nitrosamide intermediate and provides the desired products in excellent yields.
Collapse
Affiliation(s)
- Popuri Sureshbabu
- Department of chemistry
- Indian Institute of Technology (BHU)
- Varanasi
- India
| | - Sadaf Azeez
- Department of chemistry
- Indian Institute of Technology (BHU)
- Varanasi
- India
| | - Priyanka Chaudhary
- Department of chemistry
- Indian Institute of Technology (BHU)
- Varanasi
- India
| | | |
Collapse
|
27
|
Ren C, Zeng J, Zou G. Nickel-catalyzed cross-coupling of O,N-chelated diarylborinates with aryl chlorides and mesylates. NEW J CHEM 2019. [DOI: 10.1039/c8nj05503c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Practical nickel catalysis for efficient cross-coupling of O,N-chelated diarylborinates with aryl chlorides and mesylates based on air-stable yet readily activated organonickel precursor, trans-NiCl(Ph)(PPh3)2, and sterically unsymmetrical N-heterocyclic carbene in situ generated from imidazolium precursor with trihydrate potassium phosphate in toluene.
Collapse
Affiliation(s)
- Chao Ren
- School of Chemistry & Molecular Engineering
- East China University of Science & Technology
- 130 Meilong Rd
- Shanghai
- China
| | - Jingshu Zeng
- School of Chemistry & Molecular Engineering
- East China University of Science & Technology
- 130 Meilong Rd
- Shanghai
- China
| | - Gang Zou
- School of Chemistry & Molecular Engineering
- East China University of Science & Technology
- 130 Meilong Rd
- Shanghai
- China
| |
Collapse
|
28
|
Yin J, Zhang J, Cai C, Deng GJ, Gong H. Catalyst-Free Transamidation of Aromatic Amines with Formamide Derivatives and Tertiary Amides with Aliphatic Amines. Org Lett 2018; 21:387-392. [DOI: 10.1021/acs.orglett.8b03542] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Jiawen Yin
- The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Jingyu Zhang
- The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Changqun Cai
- The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Hang Gong
- The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry, Xiangtan University, Xiangtan 411105, China
| |
Collapse
|
29
|
Affiliation(s)
- Arup Mukherjee
- Department of Chemistry, Indian Institute of Technology Bhilai, GEC Campus, Sejbahar, Raipur, Chhattisgarh 492015, India
| | - David Milstein
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| |
Collapse
|
30
|
Garcia AA, Rayevski A, Andrade-Jorge E, Trujillo-Ferrara JG. Structural and biological overview of Boron-containing amino acids in the medicinal chemistry field. Curr Med Chem 2018; 26:5077-5089. [PMID: 30259808 DOI: 10.2174/0929867325666180926150403] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 09/06/2018] [Accepted: 09/06/2018] [Indexed: 11/22/2022]
Abstract
Amino acids are the basic structural units of proteins as well as the precursors of many compounds with biological activity. The addition of boron reportedly induces changes in the chemical-biological profile of amino acids. METHODS We compiled information on the biological effect of some compounds and discuss the structure-activity relationship of the addition of boron. The specific focus presently is on borinic derivatives of α-amino acids, the specific changes in biological activity caused by the addition of a boron-containing moiety, and the identification of some attractive compounds for testing as potential new drugs. RESULTS Borinic derivatives of α-amino acids have been widely synthesized and tested as potential new therapeutic tools. The B-N (1.65 A°) or B-C (1.61 A°) or B-O (1.50 A°) bond is often key for the stability at different pHs and temperatures and activity of these compounds. The chemical features of synthesized derivatives, such as the specific moieties and the logP, polarizability and position of the boron atom are clearly linked to their pharmacodynamic and pharmacokinetic profiles. Some mechanisms of action have been suggested or demonstrated, while those responsible for other effects remain unknown. CONCLUSION The increasing number of synthetic borinic derivatives of α-amino acids as well as the recently reported crystal structures are providing new insights into the stability of these compounds at different pHs and temperatures, their interactions on drug targets, and the ring formation of five-membered heterocycles. Further research is required to clarify the ways to achieve specific synthesis, the mechanisms involved in the observed biological effect, and the toxicological profile of this type of boron-containing compounds (BCCs).
Collapse
Affiliation(s)
- Antonio Abad Garcia
- Departamento de Bioquimica y Seccion de Estudios de Posgrado e Investigación. Escuela Superior de Medicina. Plan de San Luis y Diaz Miron s/n, 11340, Mexico City. Mexico
| | - Alexey Rayevski
- Chuiko Institute of Surface Chemistry, National Academy of Science of Ukranie. 17 Generala Naumova St., 03164, Kyiv. Ukraine
| | - Erik Andrade-Jorge
- Departamento de Bioquimica y Seccion de Estudios de Posgrado e Investigacion. Escuela Superior de Medicina. Plan de San Luis y Diaz Miron s/n, 11340, Mexico City. Mexico
| | - Jose G Trujillo-Ferrara
- Departamento de Bioquímica y Sección de Estudios de Posgrado e Investigación. Escuela Superior de Medicina. Plan de San Luis y Diaz Mirón s/n, 11340, Mexico City. Mexico
| |
Collapse
|
31
|
Direct Transamidation Reactions: Mechanism and Recent Advances. Molecules 2018; 23:molecules23092382. [PMID: 30231486 PMCID: PMC6225162 DOI: 10.3390/molecules23092382] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 09/12/2018] [Accepted: 09/13/2018] [Indexed: 11/30/2022] Open
Abstract
Amides are undeniably some of the most important compounds in Nature and the chemical industry, being present in biomolecules, materials, pharmaceuticals and many other substances. Unfortunately, the traditional synthesis of amides suffers from some important drawbacks, principally the use of stoichiometric activators or the need to use highly reactive carboxylic acid derivatives. In recent years, the transamidation reaction has emerged as a valuable alternative to prepare amides. The reactivity of amides makes their direct reaction with nitrogen nucleophiles difficult; thus, the direct transamidation reaction needs a catalyst in order to activate the amide moiety and to promote the completion of the reaction because equilibrium is established. In this review, we present research on direct transamidation reactions ranging from studies of the mechanism to the recent developments of more applicable and versatile methodologies, emphasizing those reactions involving activation with metal catalysts.
Collapse
|
32
|
Hayama N, Kuramoto R, Földes T, Nishibayashi K, Kobayashi Y, Pápai I, Takemoto Y. Mechanistic Insight into Asymmetric Hetero-Michael Addition of α,β-Unsaturated Carboxylic Acids Catalyzed by Multifunctional Thioureas. J Am Chem Soc 2018; 140:12216-12225. [PMID: 30215516 DOI: 10.1021/jacs.8b07511] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Carboxylic acids and their corresponding carboxylate anions are generally utilized as Brønsted acids/bases and oxygen nucleophiles in organic synthesis. However, a few asymmetric reactions have used carboxylic acids as electrophiles. Although chiral thioureas bearing both arylboronic acid and tertiary amine were found to promote the aza-Michael addition of BnONH2 to α,β-unsaturated carboxylic acids with moderate to good enantioselectivities, the reaction mechanism remains to be clarified. Detailed investigation of the reaction using spectroscopic analysis and kinetic studies identified tetrahedral borate complexes, comprising two carboxylate anions, as reaction intermediates. We realized a dramatic improvement in product enantioselectivity with the addition of 1 equiv of benzoic acid. In this aza-Michael reaction, the boronic acid not only activates the carboxylate ligand as a Lewis acid, together with the thiourea NH-protons, but also functions as a Brønsted base through a benzoyloxy anion to activate the nucleophile. Moreover, molecular sieves were found to play an important role in generating the ternary borate complexes, which were crucial for obtaining high enantioselectivity as demonstrated by DFT calculations. We also designed a new thiourea catalyst for the intramolecular oxa-Michael addition to suppress another catalytic pathway via a binary borate complex using steric hindrance between the catalyst and substrate. Finally, to demonstrate the synthetic versatility of both hetero-Michael additions, we used them to accomplish the asymmetric synthesis of key intermediates in pharmaceutically important molecules, including sitagliptin and α-tocopherol.
Collapse
Affiliation(s)
- Noboru Hayama
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Ryuta Kuramoto
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Tamás Földes
- Institute of Organic Chemistry, Research Centre for Natural Sciences , Hungarian Academy of Sciences , Magyar tudósok körútja 2 , H-1117 Budapest , Hungary
| | - Kazuya Nishibayashi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Yusuke Kobayashi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Imre Pápai
- Institute of Organic Chemistry, Research Centre for Natural Sciences , Hungarian Academy of Sciences , Magyar tudósok körútja 2 , H-1117 Budapest , Hungary
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| |
Collapse
|
33
|
Ma J, Zhang J, Zhou X, Wang J, Gong H. N-formylation of amine using graphene oxide as a sole recyclable metal-free carbocatalyst. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-018-1471-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
34
|
Sonawane RB, Rasal NK, Bhange DS, Jagtap SV. Copper-(II) Catalyzed N
-Formylation and N
-Acylation of Aromatic, Aliphatic, and Heterocyclic Amines and a Preventive Study in the C-N Cross Coupling of Amines with Aryl Halides. ChemCatChem 2018. [DOI: 10.1002/cctc.201800609] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Rahul B. Sonawane
- Department of Chemistry; Baburaoji Gholap College; Affiliated to Savitribai Phule Pune University; Pune 411027 Sangvi India
| | - Nishant K. Rasal
- Department of Chemistry; Baburaoji Gholap College; Affiliated to Savitribai Phule Pune University; Pune 411027 Sangvi India
| | - Dattatraya S. Bhange
- Department of Chemistry; Baburaoji Gholap College; Affiliated to Savitribai Phule Pune University; Pune 411027 Sangvi India
| | - Sangeeta V. Jagtap
- Department of Chemistry; Baburaoji Gholap College; Affiliated to Savitribai Phule Pune University; Pune 411027 Sangvi India
| |
Collapse
|
35
|
Guan C, Huang L, Ren C, Zou G. Development of a Telescoped Process for Preparation of N,O-Chelated Diarylborinates. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Changwei Guan
- Department of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, China
| | - Lingyun Huang
- Department of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, China
| | - Chao Ren
- Department of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, China
| | - Gang Zou
- Department of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, China
| |
Collapse
|
36
|
Sawant DN, Bagal DB, Ogawa S, Selvam K, Saito S. Diboron-Catalyzed Dehydrative Amidation of Aromatic Carboxylic Acids with Amines. Org Lett 2018; 20:4397-4400. [PMID: 30020789 DOI: 10.1021/acs.orglett.8b01480] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Tetrakis(dimethylamido)diboron and tetrahydroxydiboron are herein reported as new catalysts for the synthesis of aryl amides by catalytic condensation of aromatic carboxylic acids with amines. The developed protocol is both simple and highly efficient over a broad range of substrates. This method thus represents an attractive approach for the use of diboron catalysts in the synthesis of amides without having to resort to stoichiometric or additional dehydrating agents.
Collapse
|
37
|
|
38
|
Ma J, Zhang F, Zhang J, Gong H. Cobalt(II)-Catalyzed N
-Acylation of Amines through a Transamidation Reaction. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800253] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Juan Ma
- The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry; Xiangtan University; 411105 Xiangtan P. R. China
| | - Feng Zhang
- College of Science; Hunan Agricultural University; 410128 Changsha P. R. China
| | - Jingyu Zhang
- The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry; Xiangtan University; 411105 Xiangtan P. R. China
| | - Hang Gong
- The Key Laboratory for Green Organic Synthesis and Application of Hunan Province; The Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education College of Chemistry; Xiangtan University; 411105 Xiangtan P. R. China
| |
Collapse
|
39
|
Saptal VB, Sasaki T, Bhanage BM. Ru@PsIL-Catalyzed Synthesis of N
-Formamides and Benzimidazole by using Carbon Dioxide and Dimethylamine Borane. ChemCatChem 2018. [DOI: 10.1002/cctc.201800185] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Vitthal B. Saptal
- Department of Chemistry; Institute of Chemical Technology; Matunga Mumbai- 400 019 India
| | - Takehiko Sasaki
- Department of Complexity Science and Engineering; Graduate School of Frontier Sciences; The University of Tokyo; 5-1-5, Kashiwanoha, Kashiwa Chiba 277-8561 Japan
| | - Bhalchandra M. Bhanage
- Department of Chemistry; Institute of Chemical Technology; Matunga Mumbai- 400 019 India
| |
Collapse
|
40
|
Bhattacharya S, Ghosh P, Basu B. Graphene oxide (GO) catalyzed transamidation of aliphatic amides: An efficient metal-free procedure. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.060] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
41
|
Dimakos V, Singh T, Taylor MS. Boronic acid/Brønsted acid co-catalyst systems for the synthesis of 2H-chromenes from phenols and α,β-unsaturated carbonyls. Org Biomol Chem 2018; 14:6703-11. [PMID: 27314604 DOI: 10.1039/c6ob01026a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Protocols for the synthesis of substituted 2H-chromenes from α,β-unsaturated carbonyls and phenols are described. Optimal combinations of arylboronic acids and Brønsted acids have been identified, such that both can be employed in catalytic quantities to accelerate these condensations. The method has been used to synthesize a variety of substituted 2H-chromenes, as well as photochromic naphthopyrans. The use of pentafluorophenylboronic acid and diphenylphosphinic acid enabled an expansion of the electrophile scope to include α,β-unsaturated ketones. Hall's 'phase-switching' of boronic acids has been exploited to achieve the separation of the two co-catalysts from unpurified reaction mixtures by a simple liquid-liquid extraction.
Collapse
Affiliation(s)
- Victoria Dimakos
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada.
| | - Tishaan Singh
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada.
| | - Mark S Taylor
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada.
| |
Collapse
|
42
|
Wang K, Lu Y, Ishihara K. The ortho-substituent on 2,4-bis(trifluoromethyl)phenylboronic acid catalyzed dehydrative condensation between carboxylic acids and amines. Chem Commun (Camb) 2018; 54:5410-5413. [DOI: 10.1039/c8cc02558d] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The ortho-substituent of boronic acid plays a key role in preventing the coordination of amines to the boron atom.
Collapse
Affiliation(s)
- Ke Wang
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Yanhui Lu
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Kazuaki Ishihara
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| |
Collapse
|
43
|
Metaxas I, Vasilikogiannaki E, Stratakis M. Synthesis of Formate Esters and Formamides Using an Au/TiO₂-Catalyzed Aerobic Oxidative Coupling of Paraformaldehyde. NANOMATERIALS 2017; 7:nano7120440. [PMID: 29231853 PMCID: PMC5746930 DOI: 10.3390/nano7120440] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/20/2017] [Accepted: 12/06/2017] [Indexed: 01/06/2023]
Abstract
A simple method for the synthesis of formate esters and formamides is presented based on the Au/TiO₂-catalyzed aerobic oxidative coupling between alcohols or amines and formaldehyde. The suitable form of formaldehyde is paraformaldehyde, as cyclic trimeric 1,3,5-trioxane is inactive. The reaction proceeds via the formation of an intermediate hemiacetal or hemiaminal, respectively, followed by the Au nanoparticle-catalyzed aerobic oxidation of the intermediate. Typically, the oxidative coupling between formaldehyde (2 equiv) and amines occurs quantitatively at room temperature within 4 h, and there is no need to add a base as in analogous coupling reactions. The oxidative coupling between formaldehyde (typically 3 equiv) and alcohols is unprecedented and occurs more slowly, yet in good to excellent yields and selectivity. Minor side-products (2-12%) from the acetalization of formaldehyde by the alcohol are also formed. The catalyst is recyclable and can be reused after a simple filtration in five consecutive runs with a small loss of activity.
Collapse
Affiliation(s)
- Ioannis Metaxas
- Department of Chemistry, University of Crete, Voutes, 71003 Iraklion, Greece.
| | | | - Manolis Stratakis
- Department of Chemistry, University of Crete, Voutes, 71003 Iraklion, Greece.
| |
Collapse
|
44
|
Chapman RSL, Lawrence R, Williams JMJ, Bull SD. Formyloxyacetoxyphenylmethane as an N-Formylating Reagent for Amines, Amino Acids, and Peptides. Org Lett 2017; 19:4908-4911. [PMID: 28853580 DOI: 10.1021/acs.orglett.7b02382] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Formyloxyacetoxyphenylmethane is a stable, water-tolerant, N-formylating reagent for primary and secondary amines that can be used under solvent-free conditions at room temperature to prepare a range of N-formamides, N-formylanilines, N-formyl-α-amino acids, N-formylpeptides, and an isocyanide.
Collapse
Affiliation(s)
| | - Ruth Lawrence
- Department of Chemistry, University of Bath , Bath BA2 7AY, U.K
| | | | - Steven D Bull
- Department of Chemistry, University of Bath , Bath BA2 7AY, U.K
| |
Collapse
|
45
|
Yedage SL, Bhanage BM. tert-Butyl Nitrite-Mediated Synthesis of N-Nitrosoamides, Carboxylic Acids, Benzocoumarins, and Isocoumarins from Amides. J Org Chem 2017; 82:5769-5781. [PMID: 28472882 DOI: 10.1021/acs.joc.7b00570] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This work reports tert-butyl nitrite (TBN) as a multitask reagent for (1) the controlled synthesis of N-nitrosoamide from N-alkyl amides, (2) hydrolysis of N-methoxyamides to carboxylic acids, (3) metal- and oxidant-free benzocoumarin synthesis from ortho-aryl-N-methoxyamides via N-H, C-N, and C-H bond activation, and (4) isocoumarin synthesis using Ru(II)/PEG as a recyclable catalytic system via ortho-C-H activation and TBN as an oxygen source. The sequential functional group interconversion of amide to acid has also been examined using IR spectroscopic analysis. Additionally, this methodology is highly advantageous due to short reaction time, gram scale synthesis, and broad substrate scope.
Collapse
Affiliation(s)
- Subhash L Yedage
- Department of Chemistry, Institute of Chemical Technology , Mumbai 400019, India
| | | |
Collapse
|
46
|
Chakraborty S, Gellrich U, Diskin-Posner Y, Leitus G, Avram L, Milstein D. Manganese-Catalyzed N-Formylation of Amines by Methanol Liberating H2
: A Catalytic and Mechanistic Study. Angew Chem Int Ed Engl 2017; 56:4229-4233. [DOI: 10.1002/anie.201700681] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Subrata Chakraborty
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Urs Gellrich
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Yael Diskin-Posner
- Chemical Research Support; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Gregory Leitus
- Chemical Research Support; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Liat Avram
- Chemical Research Support; Weizmann Institute of Science; Rehovot 76100 Israel
| | - David Milstein
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 76100 Israel
| |
Collapse
|
47
|
Chakraborty S, Gellrich U, Diskin-Posner Y, Leitus G, Avram L, Milstein D. Manganese-Catalyzed N-Formylation of Amines by Methanol Liberating H2
: A Catalytic and Mechanistic Study. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700681] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Subrata Chakraborty
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Urs Gellrich
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Yael Diskin-Posner
- Chemical Research Support; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Gregory Leitus
- Chemical Research Support; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Liat Avram
- Chemical Research Support; Weizmann Institute of Science; Rehovot 76100 Israel
| | - David Milstein
- Department of Organic Chemistry; Weizmann Institute of Science; Rehovot 76100 Israel
| |
Collapse
|
48
|
Nishikawa Y, Nakamura H, Ukai N, Adachi W, Hara O. Tetraethylorthosilicate as a mild dehydrating reagent for the synthesis of N-formamides with formic acid. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.01.056] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
49
|
Chardon A, Mohy El Dine T, Legay R, De Paolis M, Rouden J, Blanchet J. Borinic Acid Catalysed Reduction of Tertiary Amides with Hydrosilanes: A Mild and Chemoselective Synthesis of Amines. Chemistry 2017; 23:2005-2009. [DOI: 10.1002/chem.201604802] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Aurélien Chardon
- Normandie Univ.; ENSICAEN, UNICAEN, CNRS, LCMT; 14000 Caen France
| | | | - Rémi Legay
- Normandie Univ.; ENSICAEN, UNICAEN, CNRS, LCMT; 14000 Caen France
| | - Michaël De Paolis
- COBRA, IRCOF, CNRS UMR 6014 & FR 3038; Université de Rouen et INSA de Rouen; 7682 Mt. St. Aignan France
| | - Jacques Rouden
- Normandie Univ.; ENSICAEN, UNICAEN, CNRS, LCMT; 14000 Caen France
| | - Jérôme Blanchet
- Normandie Univ.; ENSICAEN, UNICAEN, CNRS, LCMT; 14000 Caen France
| |
Collapse
|
50
|
Sheng H, Zeng R, Wang W, Luo S, Feng Y, Liu J, Chen W, Zhu M, Guo Q. An Efficient Heterobimetallic Lanthanide Alkoxide Catalyst for Transamidation of Amides under Solvent-Free Conditions. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600373] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hongting Sheng
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Ruijie Zeng
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Wenjuan Wang
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Shuwen Luo
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Yan Feng
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Jing Liu
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Weijian Chen
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Manzhou Zhu
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Qingxiang Guo
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 People's Republic of China
| |
Collapse
|