1
|
Maestro A, Malviya BK, Auer G, Ötvös SB, Kappe CO. A robust heterogeneous chiral phosphoric acid enables multi decagram scale production of optically active N, S-ketals. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2024; 26:4593-4599. [PMID: 38654978 PMCID: PMC11033974 DOI: 10.1039/d4gc00019f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 03/05/2024] [Indexed: 04/26/2024]
Abstract
Asymmetric organocatalysis has been recognized as one of the "top 10 emerging technologies" in chemistry by IUPAC in 2019. Its potential to make chemical processes more sustainable is promising, but there are still challenges that need to be addressed. Developing new and reliable enantioselective processes for reproducing batch reactions on a large scale requires a combination of chemical and technical solutions. In this manuscript, we combine a robust immobilized chiral phosphoric acid with a new packed-bed reactor design. This combination allows scaling up of the enantioselective addition of thiols to imines from a few milligrams to a multi-decagram scale in a continuous flow process without physical or chemical degradation of the catalyst.
Collapse
Affiliation(s)
- Aitor Maestro
- Department of Organic Chemistry I, University of the Basque Country, UPV/EHU Paseo de la Universidad 7 01006 Vitoria-Gasteiz Spain
- Institute of Chemistry, University of Graz, NAWI Graz A-8010 Graz Austria
| | - Bhanwar K Malviya
- Institute of Chemistry, University of Graz, NAWI Graz A-8010 Graz Austria
- Center for Continuous Flow Synthesis and Processing (CC FLOW), Research Center Pharmaceutical Engineering GmbH (RCPE) A-8010 Graz Austria
| | - Gerald Auer
- Department of Earth Sciences, University of Graz, NAWI Graz Geocenter A-8010 Graz Austria
| | - Sándor B Ötvös
- Institute of Chemistry, University of Graz, NAWI Graz A-8010 Graz Austria
- Center for Continuous Flow Synthesis and Processing (CC FLOW), Research Center Pharmaceutical Engineering GmbH (RCPE) A-8010 Graz Austria
| | - C Oliver Kappe
- Institute of Chemistry, University of Graz, NAWI Graz A-8010 Graz Austria
- Center for Continuous Flow Synthesis and Processing (CC FLOW), Research Center Pharmaceutical Engineering GmbH (RCPE) A-8010 Graz Austria
| |
Collapse
|
2
|
Zhang Z, Sui A, Zhang X, Wang X, He X, Zhang B, Wu H. Organocatalytic Asymmetric Vinylogous Michael Addition of Electron-Deficient Aryl Alkane Nucleophiles to Enals. J Org Chem 2023. [PMID: 38015566 DOI: 10.1021/acs.joc.3c01232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
We report herein a protocol for an organocatalyzed asymmetric vinylogous Michael addition of aryl alkane nucleophiles with enals under base- and additive-free conditions. A series of allylic building blocks were obtained in 60%-93% yield and 88-99% ee with 20 mol % diphenylprolinol silyl ether as catalyst. This protocol has advantages such as excellent chemoselectivity and regioselectivity, good tolerance of functionalities, and simple reaction conditions.
Collapse
Affiliation(s)
- Zhiguang Zhang
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Ao Sui
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Xiaomin Zhang
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Xu Wang
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Xinyi He
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Bingzhu Zhang
- Hebei Chemical and Pharmaceutical College, Shijiazhuang 050026, China
| | - Haixia Wu
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| |
Collapse
|
3
|
Maestro A, Nagy BS, Ötvös SB, Kappe CO. A Telescoped Continuous Flow Enantioselective Process for Accessing Intermediates of 1-Aryl-1,3-diols as Chiral Building Blocks. J Org Chem 2023; 88:15523-15529. [PMID: 37844195 PMCID: PMC10629223 DOI: 10.1021/acs.joc.3c02040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
A telescoped continuous flow process is reported for the enantioselective synthesis of chiral precursors of 1-aryl-1,3-diols, intermediates in the synthesis of ezetimibe, dapoxetine, duloxetine, and atomoxetine. The two-step sequence consists of an asymmetric allylboration of readily available aldehydes using a polymer-supported chiral phosphoric acid catalyst to introduce asymmetry, followed by selective epoxidation of the resulting alkene. The process is highly stable for at least 7 h and represents a transition-metal free enantioselective approach to valuable 1-aryl-1,3-diols.
Collapse
Affiliation(s)
- Aitor Maestro
- Department of Organic Chemistry I, University of the Basque Country, UPV/EHU, Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
- Institute of Chemistry, University of Graz, NAWI Graz, A-8010 Graz, Austria
| | - Bence S Nagy
- Institute of Chemistry, University of Graz, NAWI Graz, A-8010 Graz, Austria
| | - Sándor B Ötvös
- Institute of Chemistry, University of Graz, NAWI Graz, A-8010 Graz, Austria
- Center for Continuous Flow Synthesis and Processing (CC FLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), A-8010 Graz, Austria
| | - C Oliver Kappe
- Institute of Chemistry, University of Graz, NAWI Graz, A-8010 Graz, Austria
- Center for Continuous Flow Synthesis and Processing (CC FLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), A-8010 Graz, Austria
| |
Collapse
|
4
|
Rozsar D, Farley AJM, McLauchlan I, Shennan BDA, Yamazaki K, Dixon DJ. Bifunctional Iminophosphorane-Catalyzed Enantioselective Nitroalkane Addition to Unactivated α,β-Unsaturated Esters. Angew Chem Int Ed Engl 2023; 62:e202303391. [PMID: 36929179 PMCID: PMC10946890 DOI: 10.1002/anie.202303391] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 03/18/2023]
Abstract
Herein we describe the enantioselective intermolecular conjugate addition of nitroalkanes to unactivated α,β-unsaturated esters, catalyzed by a bifunctional iminophosphorane (BIMP) superbase. The transformation provides the most direct access to pharmaceutically relevant enantioenriched γ-nitroesters, utilizing feedstock chemicals, with unprecedented selectivity. The methodology exhibits a broad substrate scope, including β-(fluoro)alkyl, aryl and heteroaryl substituted electrophiles, and was successfully applied on a gram scale with reduced catalyst loading, and, additionally, catalyst recovery was carried out. The formal synthesis of a range of drug molecules, and an enantioselective synthesis of (S)-rolipram were achieved. Additionally, computational studies revealed key reaction intermediates and transition state structures, and provided rationale for high enantioselectivities, in good agreement with experimental results.
Collapse
Affiliation(s)
- Daniel Rozsar
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryOX1 3TAOxfordUK
| | - Alistair J. M. Farley
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryOX1 3TAOxfordUK
| | - Iain McLauchlan
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryOX1 3TAOxfordUK
| | | | - Ken Yamazaki
- Division of Applied ChemistryOkayama University700-8530TsushimanakaOkayamaJapan
| | - Darren J. Dixon
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryOX1 3TAOxfordUK
| |
Collapse
|
5
|
Tarange DL, Nayak N, Kumar A. Continuous Flow Synthesis of Substituted 3,4-Propylenedioxythiophene Derivatives. Org Process Res Dev 2023. [DOI: 10.1021/acs.oprd.2c00356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Dattatray L. Tarange
- Department of Chemistry, Indian Institute of Technology-Bombay (IITB), Powai, Mumbai 400076, India
| | - Nagaraj Nayak
- Department of Chemistry, Indian Institute of Technology-Bombay (IITB), Powai, Mumbai 400076, India
| | - Anil Kumar
- Department of Chemistry, Indian Institute of Technology-Bombay (IITB), Powai, Mumbai 400076, India
| |
Collapse
|
6
|
Nagy BS, Fu G, Hone CA, Kappe CO, Ötvös SB. Harnessing a Continuous-Flow Persulfuric Acid Generator for Direct Oxidative Aldehyde Esterifications. CHEMSUSCHEM 2023; 16:e202201868. [PMID: 36377674 PMCID: PMC10107610 DOI: 10.1002/cssc.202201868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 10/30/2022] [Indexed: 06/16/2023]
Abstract
Persulfuric acid is a well-known oxidant in various industrial-scale purification procedures. However, due to its tendency toward explosive decomposition, its usefulness in organic synthesis remained largely underexplored. Herein, a continuous in situ persulfuric acid generator was developed and applied for oxidative esterification of aldehydes under flow conditions. Sulfuric acid served as a readily available and benign precursor to form persulfuric acid in situ. By taking advantage of the continuous-flow generator concept, safety hazards were significantly reduced, whilst a robust and effective approach was ensured for direct transformations of aldehydes to valuable esters. The process proved useful for the transformation of diverse aliphatic as well as aromatic aldehydes, while its preparative capability was verified by the multigram-scale synthesis of a pharmaceutically relevant key intermediate. The present flow protocol demonstrates the safe, sustainable, and scalable application of persulfuric acid in a manner that would not be amenable to conventional batch processing.
Collapse
Affiliation(s)
- Bence S. Nagy
- Institute of ChemistryUniversity of GrazNAWI GrazHeinrichstrasse 28A-8010GrazAustria
| | - Gang Fu
- Institute of ChemistryUniversity of GrazNAWI GrazHeinrichstrasse 28A-8010GrazAustria
| | - Christopher A. Hone
- Institute of ChemistryUniversity of GrazNAWI GrazHeinrichstrasse 28A-8010GrazAustria
- Center for Continuous Flow Synthesis and Processing (CC FLOW)Research CenterPharmaceutical Engineering GmbH (RCPE)Inffeldgasse 13A-8010GrazAustria
| | - C. Oliver Kappe
- Institute of ChemistryUniversity of GrazNAWI GrazHeinrichstrasse 28A-8010GrazAustria
- Center for Continuous Flow Synthesis and Processing (CC FLOW)Research CenterPharmaceutical Engineering GmbH (RCPE)Inffeldgasse 13A-8010GrazAustria
| | - Sándor B. Ötvös
- Institute of ChemistryUniversity of GrazNAWI GrazHeinrichstrasse 28A-8010GrazAustria
- Center for Continuous Flow Synthesis and Processing (CC FLOW)Research CenterPharmaceutical Engineering GmbH (RCPE)Inffeldgasse 13A-8010GrazAustria
| |
Collapse
|
7
|
Wu B, Jiang X, Yang Y, Du H, Shi X, Li Z, Pei C. Continuous-Flow Oxidation of Amines Based on Nitrogen-Rich Heterocycles: A Facile and Sustainable Approach for Promising Nitro Derivatives. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bo Wu
- State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Xiue Jiang
- State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Yalin Yang
- State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Huiying Du
- State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Xianrui Shi
- State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, P. R. China
- Xi′an Modern Chemistry Research Institute, Xi′an 710065, P. R. China
| | - Zhaoqian Li
- State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Chonghua Pei
- State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| |
Collapse
|
8
|
Kochetkov KA, Bystrova NA, Pavlov PA, Oshchepkov MS, Oshchepkov AS. Microfluidic Asymmetrical Synthesis and Chiral Analysis. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.08.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
9
|
Han J, Escorihuela J, Fustero S, Landa A, Soloshonok VA, Sorochinsky A. Asymmetric Michael Addition in Synthesis of β-Substituted GABA Derivatives. Molecules 2022; 27:molecules27123797. [PMID: 35744921 PMCID: PMC9231165 DOI: 10.3390/molecules27123797] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/07/2022] [Accepted: 06/07/2022] [Indexed: 11/29/2022] Open
Abstract
γ-Aminobutyric acid (GABA) represents one of the most prolific structural units widely used in the design of modern pharmaceuticals. For example, β-substituted GABA derivatives are found in numerous neurological drugs, such as baclofen, phenibut, tolibut, pregabalin, phenylpiracetam, brivaracetam, and rolipram, to mention just a few. In this review, we critically discuss the literature data reported on the preparation of substituted GABA derivatives using the Michael addition reaction as a key synthetic transformation. Special attention is paid to asymmetric methods featuring synthetically useful stereochemical outcomes and operational simplicity.
Collapse
Affiliation(s)
- Jianlin Han
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China;
| | - Jorge Escorihuela
- Departamento de Química Orgánica, Universidad de Valencia, 46100 Burjassot, Spain;
| | - Santos Fustero
- Departamento de Química Orgánica, Universidad de Valencia, 46100 Burjassot, Spain;
- Correspondence: (S.F.); (A.S.)
| | - Aitor Landa
- Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain; (A.L.); (V.A.S.)
| | - Vadim A. Soloshonok
- Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain; (A.L.); (V.A.S.)
- IKERBASQUE, Basque Foundation for Science, Alameda Urquijo 36-5, Plaza Bizkaia, 48011 Bilbao, Spain
| | - Alexander Sorochinsky
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, The National Academy of Sciences of Ukraine, 1 Murmanska Str., 02094 Kyiv, Ukraine
- Correspondence: (S.F.); (A.S.)
| |
Collapse
|
10
|
Herbrik F, Sanz M, Puglisi A, Rossi S, Benaglia M. Enantioselective Organophotocatalytic Telescoped Synthesis of a Chiral Privileged Active Pharmaceutical Ingredient. Chemistry 2022; 28:e202200164. [PMID: 35239197 PMCID: PMC9325444 DOI: 10.1002/chem.202200164] [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: 01/17/2022] [Indexed: 12/24/2022]
Abstract
The continuous flow, enantioselective, organophotoredox catalytic asymmetric alkylation of aldehydes was studied, by using a homemade, custom‐designed photoreactor for reactions under cryogenic conditions. Going from microfluidic conditions up to a 10 mL mesofluidic reactor, an increase of productivity by almost 18000 % compared to the batch reaction was demonstrated. Finally, for the first time, a stereoselective photoredox organocatalytic continuous flow reaction in a fully telescoped process for an active pharmaceutical ingredient (API)synthesis was successfully achieved. The final process consists of four units of operation: visible light‐driven asymmetric catalytic benzylation under continuous flow, inline continuous work‐up, neutralisation and a final oxidative amidation step afforded the pharmaceutically active molecule in 95 % e.e.
Collapse
Affiliation(s)
- Fabian Herbrik
- Dipartimento di Chimica, Università degli Studi di Milano, Via Camillo Golgi 19, 20133, Milano, Italy
| | - Miguel Sanz
- Taros Chemicals GmbH & Co. KG, Emil-Figge-Strasse 76 A, 44227, Dortmund, Germany
| | - Alessandra Puglisi
- Dipartimento di Chimica, Università degli Studi di Milano, Via Camillo Golgi 19, 20133, Milano, Italy
| | - Sergio Rossi
- Dipartimento di Chimica, Università degli Studi di Milano, Via Camillo Golgi 19, 20133, Milano, Italy
| | - Maurizio Benaglia
- Dipartimento di Chimica, Università degli Studi di Milano, Via Camillo Golgi 19, 20133, Milano, Italy
| |
Collapse
|
11
|
Nagy BS, Kappe CO, Ötvös SB. N
‐Hydroxyphthalimide Catalyzed Aerobic Oxidation of Aldehydes under Continuous Flow Conditions. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200124] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Bence S. Nagy
- Institute of Chemistry University of Graz NAWI Graz Heinrichstrasse 28 A-8010 Graz Austria
| | - C. Oliver Kappe
- Institute of Chemistry University of Graz NAWI Graz Heinrichstrasse 28 A-8010 Graz Austria
- Center for Continuous Flow Synthesis and Processing (CC FLOW) Research Center Pharmaceutical Engineering GmbH (RCPE) Inffeldgasse 13 A-8010 Graz Austria
| | - Sándor B. Ötvös
- Institute of Chemistry University of Graz NAWI Graz Heinrichstrasse 28 A-8010 Graz Austria
- Center for Continuous Flow Synthesis and Processing (CC FLOW) Research Center Pharmaceutical Engineering GmbH (RCPE) Inffeldgasse 13 A-8010 Graz Austria
| |
Collapse
|
12
|
Hayashi Y, Hattori S, Koshino S. Asymmetric flow reactions catalyzed by immobilized diphenylprolinol alkyl ether: Michael reaction and domino reactions. Chem Asian J 2022; 17:e202200314. [DOI: 10.1002/asia.202200314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/14/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Yujiro Hayashi
- Tohoku University Department of Chemistry 6-3, Aramaki-AzaAobaAobaku 980-8578 Sendai JAPAN
| | - Shusuke Hattori
- Tohoku University Graduate School of Science Faculty of Science: Tohoku Daigaku Daigakuin Rigaku Kenkyuka Rigakubu Chemistry JAPAN
| | - Seitaro Koshino
- Tohoku University Graduate School of Science Faculty of Science: Tohoku Daigaku Daigakuin Rigaku Kenkyuka Rigakubu Chemistry JAPAN
| |
Collapse
|
13
|
Vanoye L, Favre-Réguillon A. Mechanistic Insights into the Aerobic Oxidation of Aldehydes: Evidence of Multiple Reaction Pathways during the Liquid Phase Oxidation of 2-Ethylhexanal. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00399] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Laurent Vanoye
- Université Lyon, Catalyse Polymérisation Procédés & Matériaux (CP2M), UMR 5128 CNRS − CPE Lyon, 43 boulevard du 11 novembre 1918, F-69100 Villeurbanne, France
| | - Alain Favre-Réguillon
- Université Lyon, Catalyse Polymérisation Procédés & Matériaux (CP2M), UMR 5128 CNRS − CPE Lyon, 43 boulevard du 11 novembre 1918, F-69100 Villeurbanne, France
- Conservatoire National des Arts et Métiers, EPN 7, 2 rue Conté, 75003 Paris, France
| |
Collapse
|
14
|
Nagy BS, Llanes P, Pericas MA, Kappe CO, Ötvös SB. Enantioselective Flow Synthesis of Rolipram Enabled by a Telescoped Asymmetric Conjugate Addition-Oxidative Aldehyde Esterification Sequence Using in Situ-Generated Persulfuric Acid as Oxidant. Org Lett 2022; 24:1066-1071. [PMID: 35050638 PMCID: PMC8822492 DOI: 10.1021/acs.orglett.1c04300] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A novel approach is reported for the enantioselective flow synthesis of rolipram comprising a telescoped asymmetric conjugate addition-oxidative aldehyde esterification sequence followed by trichlorosilane-mediated nitro group reduction and concomitant lactamization. The telescoped process takes advantage of a polystyrene-supported chiral organocatalyst along with in situ-generated persulfuric acid as a robust and scalable oxidant for direct aldehyde esterification. This approach demonstrates significantly improved productivity compared with earlier methodologies while ensuring environmentally benign metal-free conditions.
Collapse
Affiliation(s)
- Bence S Nagy
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, A-8010 Graz, Austria
| | - Patricia Llanes
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, E-43007 Tarragona, Spain
| | - Miquel A Pericas
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, E-43007 Tarragona, Spain.,Departament de Química Inorgànica i Orgànica, Universitat de Barcelona (UB), E-08028 Barcelona, Spain
| | - C Oliver Kappe
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, A-8010 Graz, Austria.,Center for Continuous Flow Synthesis and Processing (CC FLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, A-8010 Graz, Austria
| | - Sándor B Ötvös
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, A-8010 Graz, Austria.,Center for Continuous Flow Synthesis and Processing (CC FLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, A-8010 Graz, Austria
| |
Collapse
|
15
|
Ishitani H, Yu Z, Ichitsuka T, Koumura N, Onozawa S, Sato K, Kobayashi S. Two‐Step Continuous‐Flow Synthesis of Fungicide Metalaxyl through Catalytic C−N Bond‐Formation Processes. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202100898] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Haruro Ishitani
- Green & Sustainable Chemistry Social Cooperation Laboratory Graduate School of Science The University of Tokyo Hongo, Bunkyo-ku Tokyo 133-0033 Japan
| | - Zhibo Yu
- Department of Chemistry School of Science The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Tomohiro Ichitsuka
- Research Institute of Chemical Process Technology National Institute of Advanced Industrial Science and Technology Nigatake 4-2-1 Sendai Miyagi 983-8551 Japan
- Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology Central 5, Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| | - Nagatoshi Koumura
- Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology Central 5, Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| | - Shun‐ya Onozawa
- Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology Central 5, Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| | - Kazuhiko Sato
- Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology Central 5, Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| | - Shū Kobayashi
- Green & Sustainable Chemistry Social Cooperation Laboratory Graduate School of Science The University of Tokyo Hongo, Bunkyo-ku Tokyo 133-0033 Japan
- Department of Chemistry School of Science The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Interdisciplinary Research Center for Catalytic Chemistry National Institute of Advanced Industrial Science and Technology Central 5, Higashi 1-1-1 Tsukuba Ibaraki 305-8565 Japan
| |
Collapse
|
16
|
Chaudhari MB, Gupta P, Llanes P, Zhou L, Zanda N, Pericàs MA. An enantio- and diastereoselective approach to indoloquinolizidines in continuous flow. Org Biomol Chem 2022; 20:8273-8279. [DOI: 10.1039/d2ob01462a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A solvent-free enantioselective Michael addition mediated by a polymer-supported Jørgensen–Hayashi catalyst and a domino Pictet–Spengler plus lactamisation sequence has been reported in continuous flow.
Collapse
Affiliation(s)
- Moreshwar B. Chaudhari
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Prachi Gupta
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Patricia Llanes
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Leijie Zhou
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Nicola Zanda
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Miquel A. Pericàs
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Països Catalans 16, 43007, Tarragona, Spain
| |
Collapse
|
17
|
Ballini R, Palmieri A, Petrini M. Catalysts’ evolution in the asymmetric conjugate addition of nitroalkanes to electron-poor alkenes. Org Chem Front 2022. [DOI: 10.1039/d2qo01341j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review provides a journey of the catalyst usage for the enantioselective conjugate addition of nitroalkanes to electron-poor olefins from the early attempts to the latest achievements. Selected applications are also reported.
Collapse
Affiliation(s)
- Roberto Ballini
- School of Science and Technology, Chemistry Division, University of Camerino, CHIP, Via Madonna delle Carceri, 62032 Camerino, MC, Italy
| | - Alessandro Palmieri
- School of Science and Technology, Chemistry Division, University of Camerino, CHIP, Via Madonna delle Carceri, 62032 Camerino, MC, Italy
| | - Marino Petrini
- School of Science and Technology, Chemistry Division, University of Camerino, CHIP, Via Madonna delle Carceri, 62032 Camerino, MC, Italy
| |
Collapse
|
18
|
Sagandira CR, Nqeketo S, Mhlana K, Sonti T, Gaqa S, Watts P. Towards 4th industrial revolution efficient and sustainable continuous flow manufacturing of active pharmaceutical ingredients. REACT CHEM ENG 2022. [DOI: 10.1039/d1re00483b] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The convergence of end-to-end continuous flow synthesis with downstream processing, process analytical technology (PAT), artificial intelligence (AI), machine learning and automation in ensuring improved accessibility of quality medicines on demand.
Collapse
Affiliation(s)
| | - Sinazo Nqeketo
- Nelson Mandela University, University Way, Port Elizabeth, 6031, South Africa
| | - Kanyisile Mhlana
- Nelson Mandela University, University Way, Port Elizabeth, 6031, South Africa
| | - Thembela Sonti
- Nelson Mandela University, University Way, Port Elizabeth, 6031, South Africa
| | - Sibongiseni Gaqa
- Nelson Mandela University, University Way, Port Elizabeth, 6031, South Africa
| | - Paul Watts
- Nelson Mandela University, University Way, Port Elizabeth, 6031, South Africa
| |
Collapse
|
19
|
Yalamanchili S, Nguyen T, Zsikla A, Stamper G, DeYong AE, Florek J, Vasquez O, Pohl NLB, Bennett CS. Automated, Multistep Continuous‐Flow Synthesis of 2,6‐Dideoxy and 3‐Amino‐2,3,6‐trideoxy Monosaccharide Building Blocks. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Tu‐Anh Nguyen
- Chemistry Tufts University 62 Talbot Ave Medford MA 02145 USA
| | | | - Gavin Stamper
- Chemistry Indiana University 800 E Kirkwood Ave Bloomington IN 47405 USA
| | - Ashley E. DeYong
- Chemistry Indiana University 800 E Kirkwood Ave Bloomington IN 47405 USA
| | - John Florek
- Chemistry Tufts University 62 Talbot Ave Medford MA 02145 USA
| | - Olivea Vasquez
- Chemistry Tufts University 62 Talbot Ave Medford MA 02145 USA
| | - Nicola L. B. Pohl
- Chemistry Indiana University 800 E Kirkwood Ave Bloomington IN 47405 USA
| | - Clay S. Bennett
- Chemistry Tufts University 62 Talbot Ave Medford MA 02145 USA
| |
Collapse
|
20
|
Yalamanchili S, Nguyen TA, Zsikla A, Stamper G, DeYong AE, Florek J, Vasquez O, Pohl NLB, Bennett CS. Automated, Multistep Continuous-Flow Synthesis of 2,6-Dideoxy and 3-Amino-2,3,6-trideoxy Monosaccharide Building Blocks. Angew Chem Int Ed Engl 2021; 60:23171-23175. [PMID: 34463017 PMCID: PMC8511145 DOI: 10.1002/anie.202109887] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Indexed: 12/31/2022]
Abstract
An automated continuous flow system capable of producing protected deoxy-sugar donors from commercial material is described. Four 2,6-dideoxy and two 3-amino-2,3,6-trideoxy sugars with orthogonal protecting groups were synthesized in 11-32 % overall yields in 74-131.5 minutes of total reaction time. Several of the reactions were able to be concatenated into a continuous process, avoiding the need for chromatographic purification of intermediates. The modular nature of the experimental setup allowed for reaction streams to be split into different lines for the parallel synthesis of multiple donors. Further, the continuous flow processes were fully automated and described through the design of an open-source Python-controlled automation platform.
Collapse
Affiliation(s)
| | - Tu-Anh Nguyen
- Chemistry, Tufts University, 62 Talbot Ave, Medford, MA 02145
| | | | - Gavin Stamper
- Chemistry, Indiana University, 800 E Kirkwood Ave, Bloomington, IN, 47405
| | - Ashley E. DeYong
- Chemistry, Indiana University, 800 E Kirkwood Ave, Bloomington, IN, 47405
| | - John Florek
- Chemistry, Tufts University, 62 Talbot Ave, Medford, MA 02145
| | - Olivea Vasquez
- Chemistry, Tufts University, 62 Talbot Ave, Medford, MA 02145
| | - Nicola L. B. Pohl
- Chemistry, Indiana University, 800 E Kirkwood Ave, Bloomington, IN, 47405
| | - Clay S. Bennett
- Chemistry, Tufts University, 62 Talbot Ave, Medford, MA 02145
| |
Collapse
|
21
|
Franco F, Meninno S, Lattanzi A, Puglisi A, Benaglia M. Continuous Flow Synthesis of α-Trifluoromethylthiolated Esters and Amides from Carboxylic Acids: a Telescoped Approach. J Org Chem 2021; 86:14207-14212. [PMID: 34314582 PMCID: PMC8524418 DOI: 10.1021/acs.joc.1c01270] [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] [Indexed: 11/29/2022]
Abstract
A continuous flow approach to access α-trifluoromethylthiolated esters and amides using commercially available arylacetic acids and N-(trifluoromethylthio)phthalimide as the electrophilic reagent is described. The experimental protocol involves the in-flow conversion of the carboxylic acid into N-acylpyrazole followed by the α-trifluoromethylthiolation in a PTFE coil reactor and final reaction with primary or secondary amines, or alcohols, to afford in a telescoped process α-substituted SCF3 amides and esters, respectively, in good overall yield and short reaction times.
Collapse
Affiliation(s)
- Francesca Franco
- Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
| | - Sara Meninno
- Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy
| | - Alessandra Puglisi
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy
| | - Maurizio Benaglia
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy
| |
Collapse
|
22
|
Ötvös SB, Kappe CO. Continuous flow asymmetric synthesis of chiral active pharmaceutical ingredients and their advanced intermediates. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2021; 23:6117-6138. [PMID: 34671222 PMCID: PMC8447942 DOI: 10.1039/d1gc01615f] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 08/03/2021] [Indexed: 06/13/2023]
Abstract
Catalytic enantioselective transformations provide well-established and direct access to stereogenic synthons that are broadly distributed among active pharmaceutical ingredients (APIs). These reactions have been demonstrated to benefit considerably from the merits of continuous processing and microreactor technology. Over the past few years, continuous flow enantioselective catalysis has grown into a mature field and has found diverse applications in asymmetric synthesis of pharmaceutically active substances. The present review therefore surveys flow chemistry-based approaches for the synthesis of chiral APIs and their advanced stereogenic intermediates, covering the utilization of biocatalysis, organometallic catalysis and metal-free organocatalysis to introduce asymmetry in continuously operated systems. Single-step processes, interrupted multistep flow syntheses, combined batch/flow processes and uninterrupted one-flow syntheses are discussed herein.
Collapse
Affiliation(s)
- Sándor B Ötvös
- Institute of Chemistry, University of Graz, NAWI Graz Heinrichstrasse 28 A-8010 Graz Austria
- Center for Continuous Flow Synthesis and Processing (CC FLOW), Research Center Pharmaceutical Engineering GmbH (RCPE) Inffeldgasse 13 A-8010 Graz Austria
| | - C Oliver Kappe
- Institute of Chemistry, University of Graz, NAWI Graz Heinrichstrasse 28 A-8010 Graz Austria
- Center for Continuous Flow Synthesis and Processing (CC FLOW), Research Center Pharmaceutical Engineering GmbH (RCPE) Inffeldgasse 13 A-8010 Graz Austria
| |
Collapse
|
23
|
Gambacorta G, Sharley JS, Baxendale IR. A comprehensive review of flow chemistry techniques tailored to the flavours and fragrances industries. Beilstein J Org Chem 2021; 17:1181-1312. [PMID: 34136010 PMCID: PMC8182698 DOI: 10.3762/bjoc.17.90] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/22/2021] [Indexed: 12/28/2022] Open
Abstract
Due to their intrinsic physical properties, which includes being able to perform as volatile liquids at room and biological temperatures, fragrance ingredients/intermediates make ideal candidates for continuous-flow manufacturing. This review highlights the potential crossover between a multibillion dollar industry and the flourishing sub-field of flow chemistry evolving within the discipline of organic synthesis. This is illustrated through selected examples of industrially important transformations specific to the fragrances and flavours industry and by highlighting the advantages of conducting these transformations by using a flow approach. This review is designed to be a compendium of techniques and apparatus already published in the chemical and engineering literature which would constitute a known solution or inspiration for commonly encountered procedures in the manufacture of fragrance and flavour chemicals.
Collapse
Affiliation(s)
- Guido Gambacorta
- Department of Chemistry, University of Durham, Stockton Road, Durham, DH1 3LE, United Kingdom
| | - James S Sharley
- Department of Chemistry, University of Durham, Stockton Road, Durham, DH1 3LE, United Kingdom
| | - Ian R Baxendale
- Department of Chemistry, University of Durham, Stockton Road, Durham, DH1 3LE, United Kingdom
| |
Collapse
|
24
|
Szécsényi Z, Fülöp F, Ötvös SB. Bismuth Subnitrate-Catalyzed Markovnikov-Type Alkyne Hydrations under Batch and Continuous Flow Conditions. Molecules 2021; 26:molecules26102864. [PMID: 34066109 PMCID: PMC8151695 DOI: 10.3390/molecules26102864] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 05/01/2021] [Accepted: 05/08/2021] [Indexed: 12/04/2022] Open
Abstract
Bismuth subnitrate is reported herein as a simple and efficient catalyst for the atom-economical synthesis of methyl ketones via Markovnikov-type alkyne hydration. Besides an effective batch process under reasonably mild conditions, a chemically intensified continuous flow protocol was also developed in a packed-bed system. The applicability of the methodologies was demonstrated through hydration of a diverse set of terminal acetylenes. By simply switching the reaction medium from methanol to methanol-d4, valuable trideuteromethyl ketones were also prepared. Due to the ready availability and nontoxicity of the heterogeneous catalyst, which eliminated the need for any special additives and/or harmful reagents, the presented processes display significant advances in terms of practicality and sustainability.
Collapse
Affiliation(s)
- Zsanett Szécsényi
- Institute of Pharmaceutical Chemistry, University of Szeged, Interdisciplinary Excellence Center, Eötvös u. 6, H-6720 Szeged, Hungary;
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry, University of Szeged, Interdisciplinary Excellence Center, Eötvös u. 6, H-6720 Szeged, Hungary;
- MTA-SZTE Stereochemistry Research Group, Hungarian Academy of Sciences, Interdisciplinary Excellence Center, Eötvös u. 6, H-6720 Szeged, Hungary
- Correspondence: (F.F.); (S.B.Ö.)
| | - Sándor B. Ötvös
- MTA-SZTE Stereochemistry Research Group, Hungarian Academy of Sciences, Interdisciplinary Excellence Center, Eötvös u. 6, H-6720 Szeged, Hungary
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, A-8010 Graz, Austria
- Correspondence: (F.F.); (S.B.Ö.)
| |
Collapse
|
25
|
Borah P, Fianchini M, Pericàs MA. Assessing the Role of Site Isolation and Compartmentalization in Packed-Bed Flow Reactors for Processes Involving Wolf-and-Lamb Scenarios. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00889] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Parijat Borah
- The Barcelona Institute of Science and Technology, Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans, 16, Tarragona 43007, Spain
| | - Mauro Fianchini
- The Barcelona Institute of Science and Technology, Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans, 16, Tarragona 43007, Spain
| | - Miquel A. Pericàs
- The Barcelona Institute of Science and Technology, Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans, 16, Tarragona 43007, Spain
| |
Collapse
|
26
|
Fülöp Z, Bana P, Greiner I, Éles J. C-N Bond Formation by Consecutive Continuous-Flow Reductions towards A Medicinally Relevant Piperazine Derivative. Molecules 2021; 26:molecules26072040. [PMID: 33918489 PMCID: PMC8038289 DOI: 10.3390/molecules26072040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 03/29/2021] [Accepted: 03/29/2021] [Indexed: 11/16/2022] Open
Abstract
A new, continuous-flow consecutive reduction method was developed for the C-N bond formation in the synthesis of the key intermediate of the antipsychotic drug cariprazine. The two-step procedure consists of a DIBAL-H mediated selective ester reduction conducted in a novel, miniature alternating diameter reactor, followed by reductive amination using catalytic hydrogenation on 5% Pt/C. The connection of the optimized modules was accomplished using an at-line extraction to prevent precipitation of the aluminum salt byproducts.
Collapse
Affiliation(s)
- Zsolt Fülöp
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary;
| | - Péter Bana
- Gedeon Richter Plc, PO Box 27, 1475 Budapest, Hungary; (P.B.); (I.G.)
| | - István Greiner
- Gedeon Richter Plc, PO Box 27, 1475 Budapest, Hungary; (P.B.); (I.G.)
| | - János Éles
- Gedeon Richter Plc, PO Box 27, 1475 Budapest, Hungary; (P.B.); (I.G.)
- Correspondence: ; Tel.: +36-1-889-8703
| |
Collapse
|
27
|
Koshino S, Hattori S, Hasegawa S, Haraguchi N, Yamamoto T, Suginome M, Uozumi Y, Hayashi Y. Amphiphilic Immobilized Diphenylprolinol Alkyl Ether Catalyst on PS-PEG Resin. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200355] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Seitaro Koshino
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Shusuke Hattori
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Shota Hasegawa
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Naoki Haraguchi
- Department of Applied Chemistry and Life Science, Toyohashi University of Technology, Toyohashi, Aichi 441-8580, Japan
| | - Takeshi Yamamoto
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Michinori Suginome
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yasuhiro Uozumi
- Institute for Molecular Science (IMS), Myodaiji, Okazaki, Aichi 444-8787, Japan
| | - Yujiro Hayashi
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| |
Collapse
|
28
|
High-pressure asymmetric hydrogenation in a customized flow reactor and its application in multi-step flow synthesis of chiral drugs. J Flow Chem 2021. [DOI: 10.1007/s41981-021-00143-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
29
|
Miller SJ, Ishitani H, Furiya Y, Kobayashi S. High-Throughput Synthesis of ( S)-α-Phellandrene through Three-Step Sequential Continuous-Flow Reactions. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.0c00391] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Samuel J. Miller
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Haruro Ishitani
- GSC Social Cooperation Laboratory, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuichi Furiya
- GSC Social Cooperation Laboratory, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shu̅ Kobayashi
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- GSC Social Cooperation Laboratory, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| |
Collapse
|
30
|
Mészáros R, Márton A, Szabados M, Varga G, Kónya Z, Kukovecz Á, Fülöp F, Pálinkó I, Ötvös SB. Exploiting a silver–bismuth hybrid material as heterogeneous noble metal catalyst for decarboxylations and decarboxylative deuterations of carboxylic acids under batch and continuous flow conditions. GREEN CHEMISTRY 2021. [DOI: 10.1039/d1gc00924a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A silver-containing hybrid material is reported as a heterogeneous noble metal catalyst for protodecarboxylations and decarboxylative deuterations of carboxylic acids.
Collapse
Affiliation(s)
- Rebeka Mészáros
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Szeged
- H-6720 Hungary
| | - András Márton
- Department of Organic Chemistry
- University of Szeged
- Szeged
- H-6720 Hungary
| | - Márton Szabados
- Department of Organic Chemistry
- University of Szeged
- Szeged
- H-6720 Hungary
- Material and Solution Structure Research Group and Interdisciplinary Excellence Centre
| | - Gábor Varga
- Material and Solution Structure Research Group and Interdisciplinary Excellence Centre
- Institute of Chemistry
- University of Szeged
- Szeged
- H-6720 Hungary
| | - Zoltán Kónya
- Department of Applied and Environmental Chemistry
- University of Szeged
- Szeged
- H-6720 Hungary
- MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group
| | - Ákos Kukovecz
- Department of Applied and Environmental Chemistry
- University of Szeged
- Szeged
- H-6720 Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Szeged
- H-6720 Hungary
- MTA-SZTE Stereochemistry Research Group
| | - István Pálinkó
- Department of Organic Chemistry
- University of Szeged
- Szeged
- H-6720 Hungary
- Material and Solution Structure Research Group and Interdisciplinary Excellence Centre
| | - Sándor B. Ötvös
- MTA-SZTE Stereochemistry Research Group
- Hungarian Academy of Sciences
- Szeged
- H-6720 Hungary
- Institute of Chemistry
| |
Collapse
|