1
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Lei H, Wang B, Yang Y, Fan S, Wang S, Wei X. Ball-Milling-Enabled Nickel-Catalyzed Reductive 1,4-Alkylarylation of 1,3-Enynes under an Air Atmosphere. Org Lett 2024; 26:7688-7694. [PMID: 39207781 DOI: 10.1021/acs.orglett.4c02729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
A ball-mill-enabled nickel-catalyzed 1,4-alkylarylation of 1,3-enynes with organic bromides has been developed, offering a versatile method for assembling tetrasubstituted allenes. This approach, the first of ball-milling-based remote radical coupling, overcomes the limitations of traditional solution-phase methods, such as the need for air- and moisture-sensitive reagents, the use of bulk solvents, and prolonged reaction times. Given the outstanding performance of ball-milling-based radical reduction coupling reactions, we anticipate further advancements in sustainable and efficient synthetic methodologies.
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Affiliation(s)
- Hao Lei
- School of Pharmaceutical Sciences, Shenzhen Technology University, Shenzhen 518118, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Bobo Wang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Yufang Yang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Shu Fan
- Center for Gut Microbiome Research, Med-X Institute, The First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, Shaanxi 710061, China
| | - Siyuan Wang
- School of Pharmaceutical Sciences, Shenzhen Technology University, Shenzhen 518118, China
| | - Xiaofeng Wei
- School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
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2
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Gao P, Wu X, Zhang D, Sun X, Zhang G, Chen F. Mechanochemical Activation of Aryl Diazonium Salts: Synthesis of Polycyclic (Hetero)Aromatics. J Org Chem 2024; 89:12197-12203. [PMID: 39162099 DOI: 10.1021/acs.joc.4c01107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/21/2024]
Abstract
Although the synthesis of polycyclic (hetero)aromatics via the [4 + 2] benzannulation process has been thoroughly explored, the restricted availability of energy sources (including thermal, light, and electrical energy) mandates the utilization of substantial quantities of organic solvents, inevitably leading to environmental pollution, resource wastage, and low reaction efficiency. Herein, we report a new method for the synthesis of polycyclic (hetero)aromatics from diazonium salts and alkynes under ball-milling conditions. This mechanochemical approach requires only substoichiometric amounts of DMSO as a liquid-assisted grinding additive and furnishes the desired product in a short time.
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Affiliation(s)
- Pan Gao
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Xinyin Wu
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Duo Zhang
- Medicine Center, Guangxi University of Science and Technology, Liushi Road 257, Liuzhou, Guangxi 545006, China
| | - Xiaohuan Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Guodong Zhang
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Feng Chen
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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3
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Qu R, Wan S, Zhang X, Wang X, Xue L, Wang Q, Cheng GJ, Dai L, Lian Z. Mechanical-Force-Induced Non-spontaneous Dehalogenative Deuteration of Aromatic Iodides Enabled by Using Piezoelectric Materials as a Redox Catalyst. Angew Chem Int Ed Engl 2024; 63:e202400645. [PMID: 38687047 DOI: 10.1002/anie.202400645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 04/25/2024] [Accepted: 04/30/2024] [Indexed: 05/02/2024]
Abstract
The development of green and efficient deuteration methods is of great significance for various fields such as organic synthesis, analytical chemistry, and medicinal chemistry. Herein, we have developed a dehalogenative deuteration strategy using piezoelectric materials as catalysts in a solid-phase system under ball-milling conditions. This non-spontaneous reaction is induced by mechanical force. D2O can serve as both a deuterium source and an electron donor in the transformation, eliminating the need for additional stoichiometric exogenous reductants. A series of (hetero)aryl iodides can be transformed into deuterated products with high deuterium incorporation. This method not only effectively overcomes existing synthetic challenges but can also be used for deuterium labelling of drug molecules and derivatives. Bioactivity experiments with deuterated drug molecule suggest that the D-ipriflavone enhances the inhibitory effects on osteoclast differentiation of BMDMs in vitro.
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Affiliation(s)
- Ruiling Qu
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Shan Wan
- General Practice Ward/International Medical Center Ward, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Xuemei Zhang
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Xiaohong Wang
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Li Xue
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Qingqing Wang
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Gui-Juan Cheng
- Warshel Institute for Computational Biology, School of Life and Health Sciences, School of Medicine, The Chinese University of Hong Kong (Shenzhen), Shenzhen, 518172, P. R. China
| | - Lunzhi Dai
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
- General Practice Ward/International Medical Center Ward, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Zhong Lian
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
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4
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Ardila-Fierro KJ, Hernández JG. Intermediates in Mechanochemical Reactions. Angew Chem Int Ed Engl 2024; 63:e202317638. [PMID: 38179857 DOI: 10.1002/anie.202317638] [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: 11/19/2023] [Revised: 12/31/2023] [Accepted: 01/03/2024] [Indexed: 01/06/2024]
Abstract
Mechanochemical reactions offer methodological and environmental advantages for chemical synthesis, constantly attracting attention within the scientific community. Besides unmistakable sustainability advantages, the conditions under which mechanochemical reactions occur, namely solventless conditions, sometimes facilitate the isolation of otherwise labile or inaccessible products. Despite these advantages, limited knowledge exists regarding the mechanisms of these reactions and the types of intermediates involved. Nevertheless, in an expanding number of cases, ex situ and in situ monitoring techniques have allowed for the observation, characterization, and isolation of reaction intermediates in mechanochemical transformations. In this Minireview, we present a series of examples in which reactive intermediates have been detected in mechanochemical reactions spanning organic, organometallic, inorganic, and materials chemistry. Many of these intermediates were stabilized by non-covalent interactions, which played a pivotal role in guiding the chemical transformations. We believe that by uncovering and understanding such instances, the growing mechanochemistry community could find novel opportunities in catalysis and discover new mechanochemical reactions while achieving simplification in chemical reaction design.
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Affiliation(s)
- Karen J Ardila-Fierro
- Grupo Ciencia de los Materiales, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Calle 70 No 52-21, Medellín, Colombia
| | - José G Hernández
- Grupo Ciencia de los Materiales, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Calle 70 No 52-21, Medellín, Colombia
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5
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Hu HC, Yu SY, Tsai YH, Hsieh PW, Wang HC, Chen YN, Chuang YT, Lee MY, Chang HW, Hu HC, Wu YC, Chang FR, Szatmári I, Fülöp F. Synthesis of bioactive evodiamine and rutaecarpine analogues under ball milling conditions. Org Biomol Chem 2024; 22:2620-2629. [PMID: 38451121 DOI: 10.1039/d4ob00056k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Mechanochemical reactions achieved by processes such as milling and grinding are promising alternatives to traditional solution-based chemistry. This approach not only eliminates the need for large amounts of solvents, thereby reducing waste generation, but also finds applications in chemical and materials synthesis. The focus of this study is on the synthesis of quinazolinone derivatives by ball milling, in particular evodiamine and rutaecarpine analogues. These compounds are of interest due to their diverse bioactivities, including potential anticancer properties. The study examines the reactions carried out under ball milling conditions, emphasizing their efficiency in terms of shorter reaction times and reduced environmental impact compared to conventional methods. The ball milling reaction of evodiamine and rutaecarpine analogues resulted in yields of 63-78% and 22-61%, respectively. In addition, these compounds were tested for their cytotoxic activity, and evodiamine exhibited an IC50 of 0.75 ± 0.04 μg mL-1 against the Ca9-22 cell line. At its core, this research represents a new means to synthesise these compounds, providing a more environmentally friendly and sustainable alternative to traditional approaches.
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Affiliation(s)
- Hao-Chun Hu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Institute of Pharmaceutical Chemistry and HUN-REN-Stereochemistry Research Group, University of Szeged, Szeged 6720, Hungary.
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Szu-Yin Yu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Institute of Pharmacognosy, University of Szeged, Szeged 6720, Hungary
| | - Yi-Hong Tsai
- Department of Pharmacy and Master Program, College of Pharmacy and Health Care, Tajen University, Pingtung County 907101, Taiwan
| | - Pei-Wen Hsieh
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Department of General Surgery, Chang Gung Memorial Hospital, Chiayi 613, Taiwan
| | - Hui-Chun Wang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Yan-Ning Chen
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Ya-Ting Chuang
- Department of Biomedical Science and Environmental Biology, PhD Program in Life Sciences, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Min-Yu Lee
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Hsueh-Wei Chang
- Department of Biomedical Science and Environmental Biology, PhD Program in Life Sciences, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Hao-Chun Hu
- Department of Otorhinolaryngology-Head and Neck Surgery, Fu Jen Catholic University Hospital, Fu Jen Catholic University, New Taipei City 242062, Taiwan
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City 242062, Taiwan
| | - Yang-Chang Wu
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404, Taiwan
- Graduate Institute of Integrated Medicine, China Medical University, Taichung 404, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - István Szatmári
- Institute of Pharmaceutical Chemistry and HUN-REN-Stereochemistry Research Group, University of Szeged, Szeged 6720, Hungary.
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry and HUN-REN-Stereochemistry Research Group, University of Szeged, Szeged 6720, Hungary.
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6
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Millward F, Zysman-Colman E. Mechanophotocatalysis: A Generalizable Approach to Solvent-minimized Photocatalytic Reactions for Organic Synthesis. Angew Chem Int Ed Engl 2024; 63:e202316169. [PMID: 38263796 DOI: 10.1002/anie.202316169] [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: 10/25/2023] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 01/25/2024]
Abstract
This proof-of-concept study cements the viability and generality of mechanophotocatalysis, merging mechanochemistry and photocatalysis to enable solvent-minimized photocatalytic reactions. We demonstrate the transmutation of four archetypal solution-state photocatalysis reactions to a solvent-minimized environment driven by the combined actions of milling, light, and photocatalysts. The chlorosulfonylation of alkenes and the pinacol coupling of aldehydes and ketones were conducted under solvent-free conditions with competitive or superior efficiencies to their solution-state analogues. Furthermore, decarboxylative alkylations are shown to function efficiently under solvent-minimized conditions, while the photoinduced energy transfer promoted [2+2] cycloaddition of chalcone experiences a significant initial rate enhancement over its solution-state variant. This work serves as a platform for future discoveries in an underexplored field: validating that solvent-minimized photocatalysis is not only generalizable and competitive with solution-state photocatalysis, but can also offer valuable advantages.
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Affiliation(s)
- Francis Millward
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, KY16 9ST, United Kingdom
| | - Eli Zysman-Colman
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, KY16 9ST, United Kingdom
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7
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Kondo K, Kubota K, Ito H. Mechanochemistry enabling highly efficient Birch reduction using sodium lumps and d-(+)-glucose. Chem Sci 2024; 15:4452-4457. [PMID: 38516077 PMCID: PMC10952065 DOI: 10.1039/d3sc06052g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 02/10/2024] [Indexed: 03/23/2024] Open
Abstract
In this study, a mechanochemical protocol for highly efficient and ammonia-free sodium-based Birch reduction was developed, leveraging the use of cheap and easy-to-handle sodium lumps. The key to achieving this transformation is the use of d-(+)-glucose as a proton source, which solidifies the reaction mixture in bulk state, enhancing the efficiency of the in situ mechanical activation of sodium lumps through the ball-milling process. Under the developed conditions, a diverse array of aromatic and heteroaromatic compounds were selectively reduced to produce the corresponding 1,4-cyclohexadiene derivatives in high yields within 30 min. Notably, all synthetic operations can be carried out without inert gases or the need for dry or bulk organic solvents. Furthermore, a scaled-up synthesis can be conducted without any yield losses. These results suggest that the present mechanochemical approach offers a more convenient, economically attractive, and sustainable alternative to previously established Birch reduction protocols.
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Affiliation(s)
- Keisuke Kondo
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido Japan
| | - Koji Kubota
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Sapporo Hokkaido Japan
| | - Hajime Ito
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Sapporo Hokkaido Japan
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8
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Templ J, Schnürch M. Allylation of C-, N-, and O-Nucleophiles via a Mechanochemically-Driven Tsuji-Trost Reaction Suitable for Late-Stage Modification of Bioactive Molecules. Angew Chem Int Ed Engl 2024; 63:e202314637. [PMID: 37931225 PMCID: PMC10952285 DOI: 10.1002/anie.202314637] [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: 09/29/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/08/2023]
Abstract
We present the first solvent-free, mechanochemical protocol for a palladium-catalyzed Tsuji-Trost allylation. This approach features exceptionally low catalyst loadings (0.5 mol %), short reaction times (<90 min), and a simple setup, eliminating the need for air or moisture precautions, making the process highly efficient and environmentally benign. We introduce solid, nontoxic, and easy-to-handle allyl trimethylammonium salts as valuable alternative to volatile or hazardous reagents. Our approach enables the allylation of various O-, N-, and C-nucleophiles in yields up to 99 % even for structurally complex bioactive compounds, owing to its mild conditions and exceptional functional group tolerance.
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Affiliation(s)
- Johanna Templ
- Institute of Applied Synthetic Chemistry, TU WienGetreidemarkt 9/E1631060ViennaAustria
| | - Michael Schnürch
- Institute of Applied Synthetic Chemistry, TU WienGetreidemarkt 9/E1631060ViennaAustria
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9
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Templ J, Schnürch M. Allylation of C-, N-, and O-Nucleophiles via a Mechanochemically-Driven Tsuji-Trost Reaction Suitable for Late-Stage Modification of Bioactive Molecules. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 136:e202314637. [PMID: 38516646 PMCID: PMC10953357 DOI: 10.1002/ange.202314637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Indexed: 03/23/2024]
Abstract
We present the first solvent-free, mechanochemical protocol for a palladium-catalyzed Tsuji-Trost allylation. This approach features exceptionally low catalyst loadings (0.5 mol %), short reaction times (<90 min), and a simple setup, eliminating the need for air or moisture precautions, making the process highly efficient and environmentally benign. We introduce solid, nontoxic, and easy-to-handle allyl trimethylammonium salts as valuable alternative to volatile or hazardous reagents. Our approach enables the allylation of various O-, N-, and C-nucleophiles in yields up to 99 % even for structurally complex bioactive compounds, owing to its mild conditions and exceptional functional group tolerance.
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Affiliation(s)
- Johanna Templ
- Institute of Applied Synthetic Chemistry, TU WienGetreidemarkt 9/E1631060ViennaAustria
| | - Michael Schnürch
- Institute of Applied Synthetic Chemistry, TU WienGetreidemarkt 9/E1631060ViennaAustria
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10
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Wenger LE, Hanusa TP. Synthesis without solvent: consequences for mechanochemical reactivity. Chem Commun (Camb) 2023; 59:14210-14222. [PMID: 37953718 DOI: 10.1039/d3cc04929a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Solvents are so nearly omnipresent in synthetic chemistry that a classic question for their use has been: "What is the best solvent for this reaction?" The increasing use of mechanochemical approaches to synthesis-by grinding, milling, extrusion, or other means-and usually with no, or only limited, amounts of solvent, has raised an alternative question for the synthetic chemist: "What happens if there is no solvent?" This review focuses on a three-part answer to that question: when there is little change ("solvent-optional" reactions); when solvent needs to be present in some form, even if only in the amounts provided by liquid-assisted (LAG) or solvate-assisted grinding; and those cases in which mechanochemistry allows access to compounds that cannot be obtained from solution-based routes. The emphasis here is on inorganic and organometallic systems, including selected examples of mechanosynthesis and mechanocatalysis. Issues of mechanochemical depictions and the adequacy of LAG descriptions are also reviewed.
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Affiliation(s)
- Lauren E Wenger
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee, 37235, USA.
| | - Timothy P Hanusa
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee, 37235, USA.
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11
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Čarný T, Kisszékelyi P, Markovič M, Gracza T, Koóš P, Šebesta R. Mechanochemical Pd-Catalyzed Amino- and Oxycarbonylations using FeBr 2(CO) 4 as a CO Source. Org Lett 2023. [PMID: 38018997 DOI: 10.1021/acs.orglett.3c03440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Herein, we describe the development of mechanochemical amino- and oxycarbonylation employing FeBr2(CO)4 as a solid CO source. This Pd/XantPhos-catalyzed reaction affords a range of carboxamides and esters from aryl iodides and various amines or phenols. Both primary and secondary amines, including amino acids, can be employed as N-nucleophiles.
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Affiliation(s)
- Tomáš Čarný
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Mlynská dolina, Ilkovičova 6, SK-842 15 Bratislava, Slovakia
| | - Péter Kisszékelyi
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Mlynská dolina, Ilkovičova 6, SK-842 15 Bratislava, Slovakia
| | - Martin Markovič
- Department of Organic Chemistry, Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, SK-812 37 Bratislava, Slovakia
| | - Tibor Gracza
- Department of Organic Chemistry, Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, SK-812 37 Bratislava, Slovakia
| | - Peter Koóš
- Department of Organic Chemistry, Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, SK-812 37 Bratislava, Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Mlynská dolina, Ilkovičova 6, SK-842 15 Bratislava, Slovakia
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12
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Park J, Kim A, Kim BS. Anionic ring-opening polymerization of functional epoxide monomers in the solid state. Nat Commun 2023; 14:5855. [PMID: 37730802 PMCID: PMC10511433 DOI: 10.1038/s41467-023-41576-0] [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: 11/15/2022] [Accepted: 09/08/2023] [Indexed: 09/22/2023] Open
Abstract
Despite recent advancements in mechanochemical polymerization, understanding the unique mechanochemical reactivity during the ball milling polymerization process still requires extensive investigations. Herein, solid-state anionic ring-opening polymerization is used to synthesize polyethers from various functional epoxide monomers. The critical parameters of the monomers are investigated to elucidate the unique reactivity of ball milling polymerization. The controllable syntheses of the desired polyethers are characterized via NMR, GPC, and MALDI-ToF analyses. Interestingly, bulky monomers exhibit faster conversions in the solid-state in clear contrast to that observed for solution polymerization. Particularly, a close linear correlation is observed between the conversion of the ball milling polymerization and melting point of the functional epoxide monomers, indicating melting point as a critical predictor of mechanochemical polymerization reactivity. This study provides insights into the efficient design and understanding of mechanochemical polymerization.
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Affiliation(s)
- Jihye Park
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Ahyun Kim
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Byeong-Su Kim
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea.
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13
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Lennox CB, Borchers TH, Gonnet L, Barrett CJ, Koenig SG, Nagapudi K, Friščić T. Direct mechanocatalysis by resonant acoustic mixing (RAM). Chem Sci 2023; 14:7475-7481. [PMID: 37449073 PMCID: PMC10337763 DOI: 10.1039/d3sc01591b] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 05/17/2023] [Indexed: 07/18/2023] Open
Abstract
We demonstrate the use of a metal surface to directly catalyse copper-catalysed alkyne-azide click-coupling (CuAAC) reactions under the conditions of Resonant Acoustic Mixing (RAM) - a recently introduced and scalable mechanochemical methodology that uniquely eliminates the need for bulk solvent, as well as milling media. By using a simple copper coil as a catalyst, this work shows that direct mechanocatalysis can occur in an impact-free environment, relying solely on high-speed mixing of reagents against a metal surface, without the need for specially designed milling containers and media. By introducing an experimental setup that enables real-time Raman spectroscopy monitoring of RAM processes, we demonstrate 0th-order reaction kinetics for several selected CuAAC reactions, supporting surface-based catalysis. The herein presented RAM-based direct mechanocatalysis methodology is simple, enables the effective one-pot, two-step synthesis of triazoles via a combination of benzyl azide formation and CuAAC reactions on a wide scope of reagents, provides control over reaction stoichiometry that is herein shown to be superior to that seen in solution or by using more conventional CuCl catalyst, and is applied for simple gram-scale synthesis of the anticonvulsant drug Rufinamide.
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Affiliation(s)
- Cameron B Lennox
- School of Chemistry, University of Birmingham Birmingham B15 2TT UK
- Department of Chemistry, McGill University 801 Sherbrooke St. W. Montreal Quebec H3H 0B8 Canada
| | - Tristan H Borchers
- School of Chemistry, University of Birmingham Birmingham B15 2TT UK
- Department of Chemistry, McGill University 801 Sherbrooke St. W. Montreal Quebec H3H 0B8 Canada
| | - Lori Gonnet
- School of Chemistry, University of Birmingham Birmingham B15 2TT UK
- Department of Chemistry, McGill University 801 Sherbrooke St. W. Montreal Quebec H3H 0B8 Canada
| | - Christopher J Barrett
- Department of Chemistry, McGill University 801 Sherbrooke St. W. Montreal Quebec H3H 0B8 Canada
| | - Stefan G Koenig
- Small Molecule Pharmaceutical Sciences, Genentech Inc. One DNA Way South San Francisco CA 94080 USA
| | - Karthik Nagapudi
- Small Molecule Pharmaceutical Sciences, Genentech Inc. One DNA Way South San Francisco CA 94080 USA
| | - Tomislav Friščić
- School of Chemistry, University of Birmingham Birmingham B15 2TT UK
- Department of Chemistry, McGill University 801 Sherbrooke St. W. Montreal Quebec H3H 0B8 Canada
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14
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Luo H, Liu FZ, Liu Y, Chu Z, Yan K. Biasing Divergent Polycyclic Aromatic Hydrocarbon Oxidation Pathway by Solvent-Free Mechanochemistry. J Am Chem Soc 2023. [PMID: 37428958 DOI: 10.1021/jacs.3c00614] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
Precise control in reaction selectivity is the goal in modern organic synthesis, and it has been widely studied throughout the synthetic community. In comparison, control of divergent reactivity of a given reagent under different reaction conditions is relatively less explored aspect of chemical selectivity. We herein report an unusual reaction between polycyclic aromatic hydrocarbons and periodic acid H5IO6 (1), where the product outcome is dictated by the choice of reaction conditions. That is, reactions under solution-based condition give preferentially C-H iodination products, while reactions under solvent-free mechanochemical condition provide C-H oxidation quinone products. Control experiments further indicated that the iodination product is not a reaction intermediate toward the oxidation product and vice versa. Mechanistic studies unveiled an in situ crystalline-to-crystalline phase change in 2 during ball-milling treatment, where we assigned it as a polymeric hydrogen-bond network of 1. We believe that this polymeric crystalline phase shields the more embedded electrophilic I═O group of 1 from C-H iodination and bias a divergent C-H oxidation pathway (with I═O) in the solid state. Collectively, this work demonstrates that mechanochemistry can be employed to completely switch a reaction pathway and unmask hidden reactivity of chemical reagents.
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Affiliation(s)
- Hao Luo
- School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China
| | - Fang-Zi Liu
- School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China
| | - Yan Liu
- School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China
| | - Zhaoyang Chu
- School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China
| | - KaKing Yan
- School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China
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15
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Seo T, Kubota K, Ito H. Mechanochemistry-Directed Ligand Design: Development of a High-Performance Phosphine Ligand for Palladium-Catalyzed Mechanochemical Organoboron Cross-Coupling. J Am Chem Soc 2023; 145:6823-6837. [PMID: 36892233 DOI: 10.1021/jacs.2c13543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
Mechanochemical synthesis that uses transition-metal catalysts has attracted significant attention due to its numerous advantages, including low solvent waste, short reaction times, and the avoidance of problems associated with the low solubility of starting materials. However, even though the mechanochemical reaction environment is largely different from that of homogeneous solution systems, transition-metal catalysts, which were originally developed for use in solution, have been used directly in mechanochemical reactions without any molecular-level modifications to ensure their suitability for mechanochemistry. Alas, this has limited the development of more efficient mechanochemical cross-coupling processes. Here, we report a conceptually distinct approach, whereby a mechanochemistry-directed design is used to develop ligands for mechanochemical Suzuki-Miyaura cross-coupling reactions. The ligand development was guided by the experimental observation of catalyst deactivation via the aggregation of palladium species, a problem that is particularly prominent in solid-state reactions. By embedding the ligand into a poly(ethylene glycol) (PEG) polymer, we found that phosphine-ligated palladium(0) species could be immobilized in the fluid phase created by the PEG chains, preventing the physical mixing of the catalyst into the crystalline solid phase and thus undesired catalyst deactivation. This catalytic system showed high catalytic activity in reactions of polyaromatic substrates close to room temperature. These substrates usually require elevated temperatures to be reactive in the presence of catalyst systems with conventional ligands such as SPhos. The present study hence provides important insights for the design of high-performance catalysts for solid-state reactions and has the potential to inspire the development of industrially attractive, almost solvent-free mechanochemical cross-coupling technologies.
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Affiliation(s)
- Tamae Seo
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Koji Kubota
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 001-0021, Japan
| | - Hajime Ito
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 001-0021, Japan
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16
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Manna K, Jana R. Palladium-Catalyzed Cross-Electrophile Coupling between Aryl Diazonium Salt and Aryl Iodide/Diaryliodonium Salt in H 2O-EtOH. Org Lett 2023; 25:341-346. [PMID: 36607149 DOI: 10.1021/acs.orglett.2c03932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We report herein a mild highly chemoselective palladium-catalyzed cross-electrophile coupling between readily accessible aromatic diazonium salt and aryl iodide or diaryliodonium salt in water-ethanol (2:1) medium. Mechanistic studies revealed that ethanol is crucial to generate an active Pd(0) catalyst, and the counterion of the diazonium salt renders a cationic Pd(II) species that facilitates subsequent oxidative addition to aryl iodide/diaryliodonium salt. Silver(I) salt was crucial to retain the catalytic activity of palladium, removing the iodide ion as a precipitate.
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Affiliation(s)
- Kartic Manna
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, West Bengal, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, Uttar Pradesh, India
| | - Ranjan Jana
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032, West Bengal, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, Uttar Pradesh, India
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17
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Yoo K, Fabig S, Grätz S, Borchardt L. The impact of the physical state and the reaction phase in the direct mechanocatalytic Suzuki-Miyaura coupling reaction. Faraday Discuss 2023; 241:206-216. [PMID: 36200472 DOI: 10.1039/d2fd00100d] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The direct mechanocatalytic Suzuki-Miyaura coupling reaction, utilizing palladium milling balls as active catalysts, was investigated regarding the physical state of the reagents and the reaction phase. The substitution patterns and functional groups of different aryl iodides were varied and different boronic acid derivates were utilized to achieve a wide range of substrate combinations. In the neat grinding experiments, liquid aryl iodides were more reactive than solid ones and a steric influence of the substituents, especially pronounced in ortho compounds, was observed. In order to overcome the general low reactivity of the solid phase, several liquid-assisted grinding experiments were conducted and the influence of substrate solubility and catalyst wettability analyzed. Among all LAG additives, EtOH showed the greatest impact on the reactivity, as it converts boronic acid derivatives into liquid and reactive esters under mechanochemical conditions, significantly speeding up the reaction.
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Affiliation(s)
- Kwangho Yoo
- Inorganic Chemistry I, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, Germany.
| | - Sven Fabig
- Inorganic Chemistry I, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, Germany.
| | - Sven Grätz
- Inorganic Chemistry I, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, Germany.
| | - Lars Borchardt
- Inorganic Chemistry I, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, Germany.
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18
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Gonnet L, Borchers TH, Lennox CB, Vainauskas J, Teoh Y, Titi HM, Barrett CJ, Koenig SG, Nagapudi K, Friščić T. The " η-sweet-spot" ( ηmax) in liquid-assisted mechanochemistry: polymorph control and the role of a liquid additive as either a catalyst or an inhibitor in resonant acoustic mixing (RAM). Faraday Discuss 2023; 241:128-149. [PMID: 36239309 DOI: 10.1039/d2fd00131d] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Resonant acoustic mixing (RAM) offers a simple, efficient route for mechanochemical synthesis in the absence of milling media or bulk solvents. Here, we show the use of RAM to conduct the copper-catalysed coupling of sulfonamides and carbodiimides. This coupling was previously reported to take place only by mechanochemical ball milling, while in conventional solution environments it is not efficient, or does not take place at all. The results demonstrate RAM as a suitable methodology to conduct reactions previously accessed only by ball milling and provide a detailed, systematic overview of how the amount of liquid additive, measured by the ratio of liquid volume to weight of reactants (η, in μL mg-1), can affect the course of a mechanochemical reaction and the polymorphic composition of its product. Switching from ball milling to RAM allowed for the discovery of a new polymorph of the model sulfonylguanidine obtained by catalytic coupling of di(cyclohexyl)carbodiimide (DCC) and p-toluenesulfonamide, and the ability to control reaction temperature in RAM enabled in situ control of the polymorphic behaviour of this nascent product. We show that the reaction conversion for a given reaction time does not change monotonically but, instead, achieves a maximum for a well-defined η-value. This "η-sweet-spot" of conversion is herein designated ηmax. The herein explored reactions demonstrate sensitivity to η on the order of 0.01 μL mg-1, which corresponds to an amount of liquid additive below 5 mol% compared to the reactants, and is at least one to two orders of magnitude lower than the η-value typically considered in the design of liquid-assisted ball milling mechanochemical reactions. Such sensitivity suggests that strategies to optimise liquid-assisted mechanochemical reactions should systematically evaluate η-values at increments of 0.01 μL mg-1, or even finer. At η-values other than ηmax the reaction conversion drops off, demonstrating that the same liquid additive can act either as a catalyst or an inhibitor of a mechanochemical reaction, depending on the amount.
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Affiliation(s)
- Lori Gonnet
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, QC, H3H 0B8, Canada.
| | - Tristan H Borchers
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, QC, H3H 0B8, Canada.
| | - Cameron B Lennox
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, QC, H3H 0B8, Canada.
| | - Jogirdas Vainauskas
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, QC, H3H 0B8, Canada.
| | - Yong Teoh
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, QC, H3H 0B8, Canada.
| | - Hatem M Titi
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, QC, H3H 0B8, Canada.
| | - Christopher J Barrett
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, QC, H3H 0B8, Canada.
| | - Stefan G Koenig
- Small Molecule Pharmaceutical Sciences, Genentech Inc., One DNA Way, South San Francisco, CA 94080, USA.
| | - Karthik Nagapudi
- Small Molecule Pharmaceutical Sciences, Genentech Inc., One DNA Way, South San Francisco, CA 94080, USA.
| | - Tomislav Friščić
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, QC, H3H 0B8, Canada. .,School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, UK.
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19
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Hosseini R, Ranjbar‐Karimi R, Mohammadiannejad K. Practical Synthesis of Novel Symmetrical and Unsymmetrical
Tetrakis
(aryl/heteroaryl) Adducts Containing Polyconjugated Linkages. ChemistrySelect 2022. [DOI: 10.1002/slct.202203760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Raziyeh Hosseini
- Department of Chemistry Vali-e-Asr University of Rafsanjan Rafsanjan 77176, Islamic Republic of Iran Iran
| | - Reza Ranjbar‐Karimi
- Department of Chemistry Vali-e-Asr University of Rafsanjan Rafsanjan 77176, Islamic Republic of Iran Iran
| | - Kazem Mohammadiannejad
- NMR Laboratory Faculty of Science Vali-e-Asr University of Rafsanjan Rafsanjan 77176, Islamic Republic of Iran Iran
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20
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Jones A, Williams MTJ, Morrill LC, Browne DL. Mechanical Activation of Zero-Valent Metal Reductants for Nickel-Catalyzed Cross-Electrophile Coupling. ACS Catal 2022; 12:13681-13689. [PMID: 36366760 PMCID: PMC9638985 DOI: 10.1021/acscatal.2c03117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 09/27/2022] [Indexed: 12/04/2022]
Abstract
The cross-electrophile coupling of either twisted-amides or heteroaryl halides with alkyl halides, enabled by ball-milling, is herein described. The operationally simple nickel-catalyzed process has no requirement for inert atmosphere or dry solvents and delivers the corresponding acylated or heteroarylated products across a broad range of substrates. Key to negating the necessity of inert reaction conditions is the mechanical activation of the raw metal terminal reductant: manganese in the case of twisted amides and zinc for heteroaryl halides.
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Affiliation(s)
- Andrew
C. Jones
- Cardiff
Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K.
| | - Matthew T. J. Williams
- Cardiff
Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K.
| | - Louis C. Morrill
- Cardiff
Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, U.K.
| | - Duncan L. Browne
- School
of Pharmacy, University College London, 29-39 Brunswick Square, Bloomsbury, London, WC1N 1AX, U.K.
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21
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Bolt RRA, Raby‐Buck SE, Ingram K, Leitch JA, Browne DL. Temperature‐Controlled Mechanochemistry for the Nickel‐Catalyzed Suzuki–Miyaura‐Type Coupling of Aryl Sulfamates via Ball Milling and Twin‐Screw Extrusion. **. Angew Chem Int Ed Engl 2022; 61:e202210508. [PMID: 36082766 PMCID: PMC9828252 DOI: 10.1002/anie.202210508] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Indexed: 01/12/2023]
Abstract
The nickel catalyzed Suzuki-Miyaura-type coupling of aryl sulfamates and boronic acid derivatives enabled by temperature-controlled mechanochemistry via the development of a programmable PID-controlled jar heater is reported. This base-metal-catalyzed, solvent-free, all-under-air protocol was also scaled 200-fold using twin-screw extrusion technology affording decagram quantities of material.
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Affiliation(s)
- Robert R. A. Bolt
- Department of Pharmaceutical and Biological ChemistryUniversity College London (UCL)School of Pharmacy29-39 Brunswick Square, BloomsburyLondonWC1N 1AXUK
| | - Sarah E. Raby‐Buck
- Department of Pharmaceutical and Biological ChemistryUniversity College London (UCL)School of Pharmacy29-39 Brunswick Square, BloomsburyLondonWC1N 1AXUK
| | - Katharine Ingram
- Syngenta, Jealott's Hill International Research CentreBracknell, BerkshireRG42 6EYUK
| | - Jamie A. Leitch
- Department of Pharmaceutical and Biological ChemistryUniversity College London (UCL)School of Pharmacy29-39 Brunswick Square, BloomsburyLondonWC1N 1AXUK
| | - Duncan L. Browne
- Department of Pharmaceutical and Biological ChemistryUniversity College London (UCL)School of Pharmacy29-39 Brunswick Square, BloomsburyLondonWC1N 1AXUK
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22
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Cuccu F, De Luca L, Delogu F, Colacino E, Solin N, Mocci R, Porcheddu A. Mechanochemistry: New Tools to Navigate the Uncharted Territory of "Impossible" Reactions. CHEMSUSCHEM 2022; 15:e202200362. [PMID: 35867602 PMCID: PMC9542358 DOI: 10.1002/cssc.202200362] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 06/01/2022] [Indexed: 05/10/2023]
Abstract
Mechanochemical transformations have made chemists enter unknown territories, forcing a different chemistry perspective. While questioning or revisiting familiar concepts belonging to solution chemistry, mechanochemistry has broken new ground, especially in the panorama of organic synthesis. Not only does it foster new "thinking outside the box", but it also has opened new reaction paths, allowing to overcome the weaknesses of traditional chemistry exactly where the use of well-established solution-based methodologies rules out progress. In this Review, the reader is introduced to an intriguing research subject not yet fully explored and waiting for improved understanding. Indeed, the study is mainly focused on organic transformations that, although impossible in solution, become possible under mechanochemical processing conditions, simultaneously entailing innovation and expanding the chemical space.
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Affiliation(s)
- Federico Cuccu
- Dipartimento di Scienze Chimiche e GeologicheUniversità degli Studi di CagliariCittadella Universitaria09042Monserrato, CagliariItaly
| | - Lidia De Luca
- Dipartimento di Chimica e FarmaciaUniversità degli Studi di Sassarivia Vienna 207100SassariItaly
| | - Francesco Delogu
- Dipartimento di Ingegneria Meccanica, Chimica e dei MaterialiUniversità degli Studi di CagliariVia Marengo 209123CagliariItaly
| | | | - Niclas Solin
- Department of PhysicsChemistry and Biology (IFM)Electronic and Photonic Materials (EFM)Building Fysikhuset, Room M319, CampusVallaSweden
| | - Rita Mocci
- Dipartimento di Scienze Chimiche e GeologicheUniversità degli Studi di CagliariCittadella Universitaria09042Monserrato, CagliariItaly
| | - Andrea Porcheddu
- Dipartimento di Scienze Chimiche e GeologicheUniversità degli Studi di CagliariCittadella Universitaria09042Monserrato, CagliariItaly
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23
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Pickhardt W, Beaković C, Mayer M, Wohlgemuth M, Kraus FJL, Etter M, Grätz S, Borchardt L. The Direct Mechanocatalytic Suzuki-Miyaura Reaction of Small Organic Molecules. Angew Chem Int Ed Engl 2022; 61:e202205003. [PMID: 35638133 PMCID: PMC9543434 DOI: 10.1002/anie.202205003] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Indexed: 11/23/2022]
Abstract
The molecular Suzuki cross-coupling reaction was conducted mechanochemically, without solvents, ligands, or catalyst powders. Utilizing one catalytically active palladium milling ball, products could be formed in quantitative yield in as little as 30 min. In contrast to previous reports, the adjustment of milling parameters led to the complete elimination of abrasion from the catalyst ball, thus enabling the first reported systematic catalyst analysis. XPS, in situ XRD, and reference experiments provided evidence that the milling ball surface was the location of the catalysis, allowing a mechanism to be proposed. The versatility of the approach was demonstrated by extending the substrate scope to deactivated and even sterically hindered aryl iodides and bromides.
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Affiliation(s)
- Wilm Pickhardt
- Inorganic Chemistry IRuhr-Universität BochumUniversitätsstraße 15044801BochumGermany
| | - Claudio Beaković
- Inorganic Chemistry IRuhr-Universität BochumUniversitätsstraße 15044801BochumGermany
| | - Maike Mayer
- Inorganic Chemistry IRuhr-Universität BochumUniversitätsstraße 15044801BochumGermany
| | - Maximilian Wohlgemuth
- Inorganic Chemistry IRuhr-Universität BochumUniversitätsstraße 15044801BochumGermany
| | | | - Martin Etter
- Deutsches Elektronen-Synchrotron (DESY)Notkestraße 8522607HamburgGermany
| | - Sven Grätz
- Inorganic Chemistry IRuhr-Universität BochumUniversitätsstraße 15044801BochumGermany
| | - Lars Borchardt
- Inorganic Chemistry IRuhr-Universität BochumUniversitätsstraße 15044801BochumGermany
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24
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Lv H, Xu X, Li J, Huang X, Fang G, Zheng L. Mechanochemical Divergent Syntheses of Oxindoles and α‐Arylacylamides via Controllable Construction of C−C and C−N Bonds by Copper and Piezoelectric Materials. Angew Chem Int Ed Engl 2022; 61:e202206420. [DOI: 10.1002/anie.202206420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Honggui Lv
- Wenzhou Institute University of Chinese Academy of Sciences Wenzhou 325001 China
- Oujiang Laboratory of ZheJiang Lab for Regenerative Medicine Vision and Brain Health Wenzhou 325001 China
| | - Xinyue Xu
- Wenzhou Institute University of Chinese Academy of Sciences Wenzhou 325001 China
- Wenzhou University College of Chemistry and Materials Engineering Wenzhou 325035 China
| | - Jing Li
- Wenzhou University College of Chemistry and Materials Engineering Wenzhou 325035 China
| | - Xiaobo Huang
- Wenzhou University College of Chemistry and Materials Engineering Wenzhou 325035 China
| | - Guoyong Fang
- Wenzhou University College of Chemistry and Materials Engineering Wenzhou 325035 China
| | - Lifei Zheng
- Wenzhou Institute University of Chinese Academy of Sciences Wenzhou 325001 China
- Oujiang Laboratory of ZheJiang Lab for Regenerative Medicine Vision and Brain Health Wenzhou 325001 China
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25
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Čarný T, Peňaška T, Andrejčák S, Šebesta R. Mechanochemical Pd‐Catalyzed Cross‐Coupling of Arylhalides and Organozinc Pivalates. Chemistry 2022; 28:e202202040. [DOI: 10.1002/chem.202202040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Tomáš Čarný
- Department of Organic Chemistry Faculty of Natural Sciences Comenius University in Bratislava Mlynská dolina, Ilkovičova 6 842 15 Bratislava Slovakia
| | - Tibor Peňaška
- Department of Organic Chemistry Faculty of Natural Sciences Comenius University in Bratislava Mlynská dolina, Ilkovičova 6 842 15 Bratislava Slovakia
| | - Samuel Andrejčák
- Department of Organic Chemistry Faculty of Natural Sciences Comenius University in Bratislava Mlynská dolina, Ilkovičova 6 842 15 Bratislava Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry Faculty of Natural Sciences Comenius University in Bratislava Mlynská dolina, Ilkovičova 6 842 15 Bratislava Slovakia
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26
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Kubota K, Baba E, Seo T, Ishiyama T, Ito H. Palladium-catalyzed solid-state borylation of aryl halides using mechanochemistry. Beilstein J Org Chem 2022; 18:855-862. [PMID: 35957749 PMCID: PMC9344555 DOI: 10.3762/bjoc.18.86] [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: 04/18/2022] [Accepted: 06/09/2022] [Indexed: 01/04/2023] Open
Abstract
This study describes the solid-state palladium-catalyzed cross-coupling between aryl halides and bis(pinacolato)diboron using ball milling. The reactions were completed within 10 min for most aryl halides to afford a variety of synthetically useful arylboronates in high yields. Notably, all experimental operations could be performed in air, and did not require the use of large amounts of dry and degassed organic solvents. The utility of this method was further demonstrated by gram-scale synthesis under solvent-free, mechanochemical conditions.
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Affiliation(s)
- Koji Kubota
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Emiru Baba
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Tamae Seo
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Tatsuo Ishiyama
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Hajime Ito
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
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27
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Xuan M, Schumacher C, Bolm C, Göstl R, Herrmann A. The Mechanochemical Synthesis and Activation of Carbon-Rich π-Conjugated Materials. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105497. [PMID: 35048569 PMCID: PMC9259731 DOI: 10.1002/advs.202105497] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/21/2021] [Indexed: 05/14/2023]
Abstract
Mechanochemistry uses mechanical force to break, form, and manipulate chemical bonds to achieve functional transformations and syntheses. Over the last years, many innovative applications of mechanochemistry have been developed. Specifically for the synthesis and activation of carbon-rich π-conjugated materials, mechanochemistry offers reaction pathways that either are inaccessible with other stimuli, such as light and heat, or improve reaction yields, energy consumption, and substrate scope. Therefore, this review summarizes the recent advances in this research field combining the viewpoints of polymer and trituration mechanochemistry. The highlighted mechanochemical transformations include π-conjugated materials as optical force probes, the force-induced release of small dye molecules, and the mechanochemical synthesis of polyacetylene, carbon allotropes, and other π-conjugated materials.
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Affiliation(s)
- Mingjun Xuan
- DWI – Leibniz Institute for Interactive MaterialsForckenbeckstr. 50Aachen52056Germany
- Institute of Technical and Macromolecular ChemistryRWTH Aachen UniversityWorringerweg 1Aachen52074Germany
| | - Christian Schumacher
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 1Aachen52074Germany
| | - Carsten Bolm
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 1Aachen52074Germany
| | - Robert Göstl
- DWI – Leibniz Institute for Interactive MaterialsForckenbeckstr. 50Aachen52056Germany
| | - Andreas Herrmann
- DWI – Leibniz Institute for Interactive MaterialsForckenbeckstr. 50Aachen52056Germany
- Institute of Technical and Macromolecular ChemistryRWTH Aachen UniversityWorringerweg 1Aachen52074Germany
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28
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Lv H, Xu X, Li J, Huang X, Fang G, Zheng L. Mechanochemical Divergent Syntheses of Oxindoles and α‐Arylacylamides via Controllable Construction of C‐C and C‐N Bonds by Copper and Piezoelectric Materials. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Honggui Lv
- University of the Chinese Academy of Sciences Wenzhou Institute CHINA
| | - Xinyue Xu
- Wenzhou University College of Chemistry and Materials Engineering CHINA
| | - Jing Li
- Wenzhou University College of Chemistry and Materials Engineering CHINA
| | - Xiaobo Huang
- Wenzhou University College of Chemistry and Materials Engineering CHINA
| | | | - Lifei Zheng
- University of the Chinese Academy of Sciences Wenzhou Institute Wenzhou Institute No. 1, Jinlian Road, Longwan District 325001 Wenzhou CHINA
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29
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Pickhardt W, Beaković C, Mayer M, Wohlgemuth M, Leon Kraus FJ, Etter M, Grätz S, Borchardt L. The Direct Mechanocatalytic Suzuki‐Miyaura Reaction of Small Organic Molecules. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wilm Pickhardt
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum Inorganic Chemistry GERMANY
| | - Claudio Beaković
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum Inorganic Chemistry GERMANY
| | - Maike Mayer
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum Inorganic Chemistry GERMANY
| | | | | | - Martin Etter
- DESY Accelerator Centre: Deutsches Elektronen-Synchrotron DESY GERMANY
| | - Sven Grätz
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum Inorganic Chemistry GERMANY
| | - Lars Borchardt
- Ruhr-Universitat Bochum Inorganic Chemistry Universitätsstraße 150 44801 Bochum GERMANY
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30
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Liu Y, Liu FZ, Yan K. Mechanochemical Access to a Short-Lived Cyclic Dimer Pd 2 L 2 : An Elusive Kinetic Species En Route to Molecular Triangle Pd 3 L 3 and Molecular Square Pd 4 L 4. Angew Chem Int Ed Engl 2022; 61:e202116980. [PMID: 35191567 DOI: 10.1002/anie.202116980] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Indexed: 11/08/2022]
Abstract
Pd-based molecular square Pd4 L4 and triangle Pd3 L3 represent the molecular ancestors of metal-coordination polyhedra that have been an integral part of the field for the last 30 years. Conventional solution-based reactions between cis-protected Pd ions and 2,2'-bipyridine exclusively give Pd4 L4 and/or Pd3 L3 as the sole products. We herein show that, under solvent-free mechanochemical conditions, the self-assembly energy landscape can be thermodynamically manipulated to form an elusive cyclic dimer Pd2 L2 for the first time. In the absence of solvent, Pd2 L2 is indefinitely stable in the solid-state, but converts rapidly to its thermodynamic products Pd3 L3 and Pd4 L4 in solution, confirming Pd2 L2 as a short-lived kinetic species in the solution-based self-assembly process. Our results highlight how mechanochemistry grants access to a vastly different chemical space than available under conventional solution conditions. This provides a unique opportunity to isolate elusive species in self-assembly processes that are too reactive to both "see" and "capture".
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Affiliation(s)
- Yan Liu
- School of Physical Science and Technology, ShanghaiTech University, 201210, Shanghai, China
| | - Fang-Zi Liu
- School of Physical Science and Technology, ShanghaiTech University, 201210, Shanghai, China
| | - KaKing Yan
- School of Physical Science and Technology, ShanghaiTech University, 201210, Shanghai, China
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31
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Manipulating Reaction Energy Coordinate Landscape of Mechanochemical Diaza-Cope Rearrangement. Molecules 2022; 27:molecules27082570. [PMID: 35458767 PMCID: PMC9027841 DOI: 10.3390/molecules27082570] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 02/04/2023] Open
Abstract
Chiral vicinal diamines, a unique class of optically-active building blocks, play a crucial role in material design, pharmaceutical, and catalysis. Traditionally, their syntheses are all solvent-based approaches, which make organic solvent an indispensable part of their production. As part of our program aiming to develop chemical processes with reduced carbon footprints, we recently reported a highly practical and environmentally-friendly synthetic route to chiral vicinal diamines by solvent-free mechanochemical diaza-Cope rearrangement. We herein showed that a new protocol by co-milling with common laboratory solid additives, such as silica gel, can significantly enhance the efficiency of the reaction, compared to reactions in the absence of additives. One possible explanation is the Lewis acidic nature of additives that accelerates a key Schiff base formation step. Reaction monitoring experiments tracing all the reaction species, including reactants, intermediates, and product, suggested that the reaction profile is distinctly different from ball-milling reactions without additives. Collectively, this work demonstrated that additive effect is a powerful tool to manipulate a reaction pathway in mechanochemical diazo-Cope rearrangement pathway, and this is expected to find broad interest in organic synthesis using mechanical force as an energy input.
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32
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Liu Y, Liu F, Yan K. Mechanochemical Access to a Short‐Lived Cyclic Dimer Pd
2
L
2
: An Elusive Kinetic Species En Route to Molecular Triangle Pd
3
L
3
and Molecular Square Pd
4
L
4. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yan Liu
- School of Physical Science and Technology ShanghaiTech University 201210 Shanghai China
| | - Fang‐Zi Liu
- School of Physical Science and Technology ShanghaiTech University 201210 Shanghai China
| | - KaKing Yan
- School of Physical Science and Technology ShanghaiTech University 201210 Shanghai China
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33
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Dalidovich T, Nallaparaju JV, Shalima T, Aav R, Kananovich DG. Mechanochemical Nucleophilic Substitution of Alcohols via Isouronium Intermediates. CHEMSUSCHEM 2022; 15:e202102286. [PMID: 34932893 PMCID: PMC9303792 DOI: 10.1002/cssc.202102286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/17/2021] [Indexed: 06/14/2023]
Abstract
An expansion of the solvent-free synthetic toolbox is essential for advances in the sustainable chemical industry. Mechanochemical reactions offer a superior safety profile and reduced amount of waste compared to conventional solvent-based synthesis. Herein a new mechanochemical method was developed for nucleophilic substitution of alcohols using fluoro-N,N,N',N'-tetramethylformamidinium hexafluorophosphate (TFFH) and K2 HPO4 as an alcohol-activating reagent and a base, respectively. Alcohol activation and reaction with a nucleophile were performed in one milling jar via reactive isouronium intermediates. Nucleophilic substitution with amines afforded alkylated amines in 31-91 % yields. The complete stereoinversion occurred for the SN 2 reaction of (R)- and (S)-ethyl lactates. Substitution with halide anions (F- , Br- , I- ) and oxygen-centered (CH3 OH, PhO- ) nucleophiles was also tested. Application of the method to the synthesis of active pharmaceutical ingredients has been demonstrated.
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Affiliation(s)
- Tatsiana Dalidovich
- Department of Chemistry and BiotechnologyTallinn University of TechnologyAkadeemia tee 1512618TallinnEstonia
| | - Jagadeesh Varma Nallaparaju
- Department of Chemistry and BiotechnologyTallinn University of TechnologyAkadeemia tee 1512618TallinnEstonia
| | - Tatsiana Shalima
- Department of Chemistry and BiotechnologyTallinn University of TechnologyAkadeemia tee 1512618TallinnEstonia
| | - Riina Aav
- Department of Chemistry and BiotechnologyTallinn University of TechnologyAkadeemia tee 1512618TallinnEstonia
| | - Dzmitry G. Kananovich
- Department of Chemistry and BiotechnologyTallinn University of TechnologyAkadeemia tee 1512618TallinnEstonia
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34
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Mechanochemical Solvent‐Free Suzuki–Miyaura Cross‐Coupling of Amides via Highly Chemoselective N−C Cleavage. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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35
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Kubota K, Endo T, Uesugi M, Hayashi Y, Ito H. Solid-State C-N Cross-Coupling Reactions with Carbazoles as Nitrogen Nucleophiles Using Mechanochemistry. CHEMSUSCHEM 2022; 15:e202102132. [PMID: 34816600 DOI: 10.1002/cssc.202102132] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/19/2021] [Indexed: 06/13/2023]
Abstract
The palladium-catalyzed solid-state C-N cross-coupling of carbazoles with aryl halides via a high-temperature ball-milling technique has been reported. This reaction allowed simple, fast, and efficient synthesis of N-arylcarbazole derivatives in good to excellent yields without the use of large amounts of organic solvents in air. Importantly, the developed solid-state coupling approach enabled the cross-coupling of poorly soluble aryl halides with large polyaromatic structures that are barely reactive under conventional solution-based conditions.
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Affiliation(s)
- Koji Kubota
- Division of Applied Chemistry Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Tsubura Endo
- Division of Applied Chemistry Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Minami Uesugi
- Division of Applied Chemistry Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Yuta Hayashi
- Division of Applied Chemistry Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Hajime Ito
- Division of Applied Chemistry Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
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36
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Williams MTJ, Morrill LC, Browne DL. Mechanochemical Organocatalysis: Do High Enantioselectivities Contradict What We Might Expect? CHEMSUSCHEM 2022; 15:e202102157. [PMID: 34767693 PMCID: PMC9300213 DOI: 10.1002/cssc.202102157] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/09/2021] [Indexed: 05/10/2023]
Abstract
Ball mills input energy to samples by pulverising the contents of the jar. Each impact on the sample or wall of the jar results in an instantaneous transmission of energy in the form of a temperature and pressure increase (volume reduction). Conversely, enantioselective organocatalytic reactions proceed through perceived delicate and well-organised transition states. Does there exist a dichotomy in the idea of enantioselective mechanochemical organocatalysis? This Review provides a survey of the literature reporting the combination of organocatalytic reactions with mechanochemical ball milling conditions. Where possible, direct comparisons of stirred in solution, stirred neat and ball milled processes are drawn with a particular focus on control of stereoselectivity.
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Affiliation(s)
- Matthew T. J. Williams
- Cardiff Catalysis InstituteSchool of ChemistryCardiff UniversityPark PlaceCardiffCF10 3ATUK
| | - Louis C. Morrill
- Cardiff Catalysis InstituteSchool of ChemistryCardiff UniversityPark PlaceCardiffCF10 3ATUK
| | - Duncan L. Browne
- Department of Pharmaceutical and Biological ChemistrySchool of PharmacyUniversity College London29–39 Brunswick Square, BloomsburyLondonWC1N 1AXUK
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37
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Kubota K, Kondo K, Seo T, Ito H. Insight into the Reactivity Profile of Solid-State Aryl Bromides in Suzuki-Miyaura Cross-Coupling Reactions Using Ball Milling. Synlett 2022. [DOI: 10.1055/a-1748-3797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Despite recent advances in solid-state organic synthesis using ball milling, insight into the unique reactivity of solid-state substrates, which is often different from that in solution, has been poorly explored. In this study, we investigated the relationship between the reactivity and melting points of aryl halides in solid-state Suzuki-Miyaura cross-coupling reactions and the effect of reaction temperature on these processes. We found that aryl halides with high melting points showed significantly low reactivity in the solid-state cross-coupling near room temperature, but the reactions were notably accelerated by increasing the reaction temperature. Given that the reaction temperature is much lower than the melting points of these substrates, the acceleration effect is most likely ascribed to the weakening of the intermolecular interactions between the substrate molecules in the solid-state. The present study provides important perspectives for the rational design of efficient solid-state organic transformations using ball milling.
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Affiliation(s)
- Koji Kubota
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Japan
| | - Keisuke Kondo
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Japan
| | - Tamae Seo
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Japan
| | - Hajime Ito
- Graduate School of Engineering, Hokkaido University, Sapporo, Japan
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38
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Yang X, Wu C, Su W, Yu J. Mechanochemical C−X/C−H Functionalization: An Alternative Strategy Access to Pharmaceuticals. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101440] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xinjie Yang
- Zhejiang University of Technology Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Chaowang Road 18# 310014 Hangzhou CHINA
| | - Chongyang Wu
- Zhejiang University of Technology Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Chaowang Road 18# 310014 Hangzhou CHINA
| | - Weike Su
- Zhejiang University of Technology Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Chaowang Road 18# 310014 Hangzhou CHINA
| | - Jingbo Yu
- Zhejiang University of Technology Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Chaowang Road 18# 310014 Hangzhou CHINA
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39
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Sugiura KI, Islam MR, Nishinaga T, Hirabayashi K, Shimizu T. Oxidative Intramolecular C–C Bond Formation Reactions of 1,2-Diarylbenzenes: Syntheses of Highly Conjugated Double-Bridged Polycyclic Aromatic Hydrocarbons. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1560-4791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractOxidation reactions of 1,2-diarylbenzenes induce intramolecular C–C bond formation. The substrates studied were prepared by the stepwise Suzuki–Miyaura coupling reaction that introduced 2-naphthyl, 2-anthranyl, and 2-pyrenyl groups on the ortho-positions of benzene. The subsequent oxidation reaction with FeCl3 induced an oxidative C–C bond formation reaction in the interior regions of the molecules. In marked contrast to our previous observations, two C–C bonds were formed. Theoretical calculations indicated that large spin densities at the reaction positions of the bis(cation radical) and/or cation radical species are needed for the C–C bond formation. The π-expanded molecules obtained showed bathochromic shifts in the absorption spectra.
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40
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Zhang J, Zhang P, Shao L, Wang R, Ma Y, Szostak M. Mechanochemical Solvent-Free Suzuki-Miyaura Cross-Coupling of Amides via Highly Chemoselective N-C Cleavage. Angew Chem Int Ed Engl 2021; 61:e202114146. [PMID: 34877756 DOI: 10.1002/anie.202114146] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Indexed: 12/14/2022]
Abstract
Although cross-coupling reactions of amides by selective N-C cleavage are one of the most powerful and burgeoning areas in organic synthesis due to the ubiquity of amide bonds, the development of mechanochemical, solid-state methods remains a major challenge. Herein, we report the first mechanochemical strategy for highly chemoselective, solvent-free palladium-catalyzed cross-coupling of amides by N-C bond activation. The method is conducted in the absence of external heating, for short reaction time and shows excellent chemoselectivity for σ N-C bond activation. The reaction shows excellent functional group tolerance and can be applied to late-stage functionalization of complex APIs and sequential orthogonal cross-couplings exploiting double solventless solid-state methods. The results extend mechanochemical reaction environments to advance the chemical repertoire of N-C bond interconversions to solid-state environmentally friendly mechanochemical methods.
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Affiliation(s)
- Jin Zhang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
| | - Pei Zhang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
| | - Lei Shao
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
| | - Ruihong Wang
- Institute of Frontier Science and Technology Transfer, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
| | - Yangmin Ma
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey, 07102, United States
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41
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Han GU, Shin S, Baek Y, Kim D, Lee K, Kim JG, Lee PH. Mechanochemical Iridium(III)-Catalyzed B-Amidation of o-Carboranes with Dioxazolones. Org Lett 2021; 23:8622-8627. [PMID: 34662139 DOI: 10.1021/acs.orglett.1c03336] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mechanochemistry was successfully applied to the functionalization of carboranes. The mechanochemical iridium(III)-catalyzed regioselective B(3)- and B(4)-amidation of unsubstituted o-carboranes with dioxazolones was developed. In addition, the mechanochemical iridium(III)-catalyzed regioselective B(4)-amidation of substituted o-carboranes was demonstrated. Because mechanochemical B-amidation proceeds smoothly without organic solvents or external heating, the present method is regarded as a sustainable and environmentally friendly surrogate for typical solvent-based reactions.
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Affiliation(s)
- Gi Uk Han
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Seohyun Shin
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Yonghyeon Baek
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Dongwook Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Kooyeon Lee
- Department of Bio-Health Technology, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Jeung Gon Kim
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Phil Ho Lee
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
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42
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Wang Y, Zhang Z, Deng L, Lao T, Su Z, Yu Y, Cao H. Mechanochemical Synthesis of 1,2-Diketoindolizine Derivatives from Indolizines and Epoxides Using Piezoelectric Materials. Org Lett 2021; 23:7171-7176. [PMID: 34459619 DOI: 10.1021/acs.orglett.1c02575] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A simple and efficient mechanochemical-induced approach for the synthesis of 1,2-diketoindolizine derivatives has been developed. BaTiO3 was used as the piezoelectric material in this transformation. This method features no usage of solvent, simple experimental operation, scalable potential, and high conversion efficiency, which make it attractive and practical.
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Affiliation(s)
- Yumei Wang
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Ziwu Zhang
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Lichan Deng
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Tianfeng Lao
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
| | - Zhengquan Su
- Guangdong Engineering Research Center of Natural Products and New Drugs, Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yue Yu
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China.,Guangdong Pharmaceutical University-University of Hong Kong Joint Biomedical Innovation Platform, Zhongshan 528437, China
| | - Hua Cao
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, China
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43
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Kubota K, Toyoshima N, Miura D, Jiang J, Maeda S, Jin M, Ito H. Introduction of a Luminophore into Generic Polymers via Mechanoradical Coupling with a Prefluorescent Reagent. Angew Chem Int Ed Engl 2021; 60:16003-16008. [PMID: 33991023 DOI: 10.1002/anie.202105381] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/10/2021] [Indexed: 11/11/2022]
Abstract
Herein, we report a novel strategy for introducing a luminophore into generic polymers facilitated by mechanical stimulation. In this study, polymeric mechanoradicals were formed in situ under ball-milling conditions to undergo radical-radical coupling with a prefluorescent nitroxide-based reagent in order to incorporate a luminophore into the polymer main chains via a covalent bond. This method allowed the direct and conceptually simple preparation of luminescent polymeric materials from a wide range of generic polymers such as polystyrene, polymethyl methacrylate, and polyethylene. These results indicate that the present mechanoradical coupling strategy may help to transform existing commodity polymers into more valuable functional materials.
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Affiliation(s)
- Koji Kubota
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Naoki Toyoshima
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Daiyo Miura
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Julong Jiang
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan.,Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Satoshi Maeda
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan.,Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Mingoo Jin
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Hajime Ito
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
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44
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Kubota K, Toyoshima N, Miura D, Jiang J, Maeda S, Jin M, Ito H. Introduction of a Luminophore into Generic Polymers via Mechanoradical Coupling with a Prefluorescent Reagent. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105381] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Koji Kubota
- Division of Applied Chemistry Graduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Naoki Toyoshima
- Division of Applied Chemistry Graduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Daiyo Miura
- Division of Applied Chemistry Graduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Julong Jiang
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Sapporo Hokkaido 060-8628 Japan
- Department of Chemistry Faculty of Science Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Satoshi Maeda
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Sapporo Hokkaido 060-8628 Japan
- Department of Chemistry Faculty of Science Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Mingoo Jin
- Division of Applied Chemistry Graduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Hajime Ito
- Division of Applied Chemistry Graduate School of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Sapporo Hokkaido 060-8628 Japan
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45
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Abstract
Recent research endeavors have established that the mechanochemical activation of piezoelectric materials can open new avenues in redox chemistry. Impact forces, such as those imparted by a ball mill, have been shown to transform piezoelectric materials such as barium titanate (BaTiO3) into a highly polarized state, which can then donate an electron to a suitable oxidant and receive an electron from a suitable reductant, mimicking established photoredox catalytic cycles. Proof‐of‐concept studies have elucidated that mechanoredox chemistry holds great potential in sustainable and efficient radical‐based synthesis.
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Affiliation(s)
- Jamie A Leitch
- Department of Pharmaceutical and Biological Chemistry, UCL School of Pharmacy, 29-39 Brunswick Square, Bloomsbury, WC1N 1AX, London, United Kingdom
| | - Duncan L Browne
- Department of Pharmaceutical and Biological Chemistry, UCL School of Pharmacy, 29-39 Brunswick Square, Bloomsbury, WC1N 1AX, London, United Kingdom
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46
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Voight EA, Greszler SN, Hartung J, Ji J, Klix RC, Randolph JT, Shelat BH, Waters JE, DeGoey DA. Desymmetrization of pibrentasvir for efficient prodrug synthesis. Chem Sci 2021; 12:10076-10082. [PMID: 34349971 PMCID: PMC8317637 DOI: 10.1039/d1sc02396a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/28/2021] [Indexed: 12/15/2022] Open
Abstract
A novel and practical desymmetrization tactic is described to access a new class of pibrentasvir prodrugs. The homotopic benzimidazoles of pibrentasvir (PIB) are differentiated via a one-pot di-Boc/mono-de-Boc selective N-Boc protection and formaldehyde adduct formation sequence, both enabled by crystallization-induced selectivity. The first step represents the only known application of the Horeau principle of statistical amplification for C2-symmetric polyheterocycle regioselective functionalization. The resulting versatile intermediate is employed in the high-yielding preparation of several pibrentasvir prodrug candidates. Horeau principle statistical amplification and solubility-driven selectivities allow C2-desymmetrization of pibrentasvir without typically required internal functionalization or steric proximity effects.![]()
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Affiliation(s)
- Eric A Voight
- Drug Discovery Science & Technology, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - Stephen N Greszler
- Drug Discovery Science & Technology, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - John Hartung
- Process Research and Development, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - Jianguo Ji
- Process Research and Development, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - Russell C Klix
- Process Research and Development, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - John T Randolph
- Drug Discovery Science & Technology, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - Bhadra H Shelat
- Process Research and Development, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - Jan E Waters
- Drug Discovery Science & Technology, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
| | - David A DeGoey
- Drug Discovery Science & Technology, AbbVie, Inc. 1 North Waukegan Road North Chicago Illinois 60064-1802 USA
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47
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Ardila-Fierro KJ, Hernández JG. Sustainability Assessment of Mechanochemistry by Using the Twelve Principles of Green Chemistry. CHEMSUSCHEM 2021; 14:2145-2162. [PMID: 33835716 DOI: 10.1002/cssc.202100478] [Citation(s) in RCA: 171] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/07/2021] [Indexed: 05/22/2023]
Abstract
In recent years, mechanochemistry has been growing into a widely accepted alternative for chemical synthesis. In addition to their efficiency and practicality, mechanochemical reactions are also recognized for their sustainability. The association between mechanochemistry and Green Chemistry often originates from the solvent-free nature of most mechanochemical protocols, which can reduce waste production. However, mechanochemistry satisfies more than one of the Principles of Green Chemistry. In this Review we will present a series of examples that will clearly illustrate how mechanochemistry can significantly contribute to the fulfillment of Green Chemistry in a more holistic manner.
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Affiliation(s)
- Karen J Ardila-Fierro
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička c. 54, 10000, Zagreb, Croatia
| | - José G Hernández
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička c. 54, 10000, Zagreb, Croatia
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48
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Kubota K, Ito H. Development of Selective Reactions Using Ball Milling. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Koji Kubota
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University
| | - Hajime Ito
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University
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49
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Jia WG, Zhi XT, Li XD, Zhou JP, Zhong R, Yu H, Lee R. Postsynthetic Modification of Half-Sandwich Ruthenium Complexes by Mechanochemical Synthesis. Inorg Chem 2021; 60:4313-4321. [PMID: 33761240 DOI: 10.1021/acs.inorgchem.1c00059] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A mild and environmentally friendly method to synthesize half-sandwich ruthenium complexes through the Wittig reaction between an aldehyde-tagged half-sandwich ruthenium complex and phosphorus ylide mechanochemically is reported herein. The mechanochemical synthesis of valuable half-sandwich ruthenium complexes resulted in a fast reaction, good yield with simple workup, and the avoidance of harsh reaction conditions and organic solvents. The synthesized half-sandwich ruthenium complexes exhibited high catalytic activity for transfer hydrogenation of ketones using 2-propanol as the hydrogen source and solvent. Density functional theory was carried out to propose a mechanism for the transfer hydrogenation process. The modeling suggests the importance of the labile p-cymene ligand in modulating the reactivity of the catalyst.
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Affiliation(s)
- Wei-Guo Jia
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou 350002, China
| | - Xue-Ting Zhi
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Xiao-Dong Li
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Jun-Peng Zhou
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Rui Zhong
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Haibo Yu
- School of Chemistry and Molecular Bioscience and Molecular Horizons, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Richmond Lee
- School of Chemistry and Molecular Bioscience and Molecular Horizons, University of Wollongong, Wollongong, New South Wales 2522, Australia
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50
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Seo T, Toyoshima N, Kubota K, Ito H. Tackling Solubility Issues in Organic Synthesis: Solid-State Cross-Coupling of Insoluble Aryl Halides. J Am Chem Soc 2021; 143:6165-6175. [PMID: 33784464 DOI: 10.1021/jacs.1c00906] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Conventional organic synthesis generally relies on the use of liquid organic solvents to dissolve the reactants. Therefore, reactions of sparingly soluble or insoluble substrates are challenging and often ineffective. The development of a solvent-independent solid-state approach that overcomes this longstanding solubility issue would provide innovative synthetic solutions and access to new areas of chemical space. Here, we report extremely fast and highly efficient solid-state palladium-catalyzed Suzuki-Miyaura cross-coupling reactions via a high-temperature ball-milling technique. This solid-state protocol enables the highly efficient cross-couplings of insoluble aryl halides with large polyaromatic structures that are barely reactive under conventional solution-based conditions. Notably, we discovered a new luminescent organic material with a strong red emission. This material was prepared via the solid-state coupling of Pigment violet 23, a compound that has so far not been involved in molecular transformations due to its extremely low solubility. This study thus provides a practical method for accessing unexplored areas of chemical space through molecular transformations of insoluble organic compounds that cannot be carried out by any other approach.
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Affiliation(s)
- Tamae Seo
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Naoki Toyoshima
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Koji Kubota
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 001-0021, Japan
| | - Hajime Ito
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 001-0021, Japan
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