1
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Fang WW, Yang GY, Fan ZH, Chen ZC, Hu XL, Zhan Z, Hussain I, Lu Y, He T, Tan BE. Conjugated cross-linked phosphine as broadband light or sunlight-driven photocatalyst for large-scale atom transfer radical polymerization. Nat Commun 2023; 14:2891. [PMID: 37210380 DOI: 10.1038/s41467-023-38402-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 05/01/2023] [Indexed: 05/22/2023] Open
Abstract
The use of light to regulate photocatalyzed reversible deactivation radical polymerization (RDRP) under mild conditions, especially driven by broadband light or sunlight directly, is highly desired. But the development of a suitable photocatalyzed polymerization system for large-scale production of polymers, especially block copolymers, has remained a big challenge. Herein, we report the development of a phosphine-based conjugated hypercrosslinked polymer (PPh3-CHCP) photocatalyst for an efficient large-scale photoinduced copper-catalyzed atom transfer radical polymerization (Cu-ATRP). Monomers including acrylates and methyl acrylates can achieve near-quantitative conversions under a wide range (450-940 nm) of radiations or sunlight directly. The photocatalyst could be easily recycled and reused. The sunlight-driven Cu-ATRP allowed the synthesis of homopolymers at 200 mL from various monomers, and monomer conversions approached 99% in clouds intermittency with good control over polydispersity. In addition, block copolymers at 400 mL scale can also be obtained, which demonstrates its great potential for industrial applications.
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Affiliation(s)
- Wei-Wei Fang
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, Hefei, Anhui, 230009, PR China
| | - Gui-Yu Yang
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, Hefei, Anhui, 230009, PR China
| | - Zi-Hui Fan
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, Hefei, Anhui, 230009, PR China
| | - Zi-Chao Chen
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, Hefei, Anhui, 230009, PR China
| | - Xun-Liang Hu
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, PR China
| | - Zhen Zhan
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, PR China
| | - Irshad Hussain
- Department of Chemistry & Chemical Engineering, SBA School of Science & Engineering, Lahore University of Management Sciences (LUMS), Lahore Cantt, Lahore, 54792, Pakistan
| | - Yang Lu
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, Hefei, Anhui, 230009, PR China
| | - Tao He
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, Hefei, Anhui, 230009, PR China.
| | - Bi-En Tan
- School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, PR China.
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2
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Kőnig B, Sztanó G, Holczbauer T, Soós T. Syntheses of 2- and 3-Substituted Morpholine Congeners via Ring Opening of 2-Tosyl-1,2-Oxazetidine. J Org Chem 2023; 88:6182-6191. [PMID: 37125664 PMCID: PMC10167689 DOI: 10.1021/acs.joc.3c00207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Diastereoselective and diastereoconvergent syntheses of 2- and 3-substituted morpholine congeners are reported. Starting from tosyl-oxazatedine 1 and α-formyl carboxylates 2, base catalysis is utilized to yield morpholine hemiaminals. Their further synthetic elaborations allowed the concise constructions of conformationally rigid morpholines. The observed diastereoselectivities and the unusual diastereoconvergence in the photoredox radical processes seem to be the direct consequence of the avoidance of pseudo A1,3 strain between the C-3 substituent and the N-tosyl group and the anomeric effect of oxygen atoms.
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Affiliation(s)
- Bálint Kőnig
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok körútja, H-1117 Budapest, Hungary
- Hevesy György PhD School of Chemistry, Eötvös Loránd University, 1/A Pázmány Péter sétány, H-1117 Budapest, Hungary
| | - Gábor Sztanó
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok körútja, H-1117 Budapest, Hungary
- Hevesy György PhD School of Chemistry, Eötvös Loránd University, 1/A Pázmány Péter sétány, H-1117 Budapest, Hungary
| | - Tamás Holczbauer
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok körútja, H-1117 Budapest, Hungary
- Centre for Structural Science, Research Centre for Natural Sciences, 2 Magyar tudósok körútja, H-1117 Budapest, Hungary
| | - Tibor Soós
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok körútja, H-1117 Budapest, Hungary
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3
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Halimehjani AZ, Breit B. Rhodium-catalyzed diastereoselective synthesis of highly substituted morpholines from nitrogen-tethered allenols. Chem Commun (Camb) 2023; 59:4376-4379. [PMID: 36946522 DOI: 10.1039/d3cc00151b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Rhodium-catalyzed intramolecular cyclization of nitrogen-tethered allenols was investigated for the synthesis of functionalized morpholines. By using this strategy, various N-protected 2,5- and 2,6-disubstituted as well as 2,3,5- and 2,5,6-trisubstituted morpholines were obtained via an atom-economic pathway with high to excellent yields, diastereo- and enantioselectivities (up to 99% yield, up to >99 : 1 dr and up to >99.9 ee). The utilities of the synthesized morpholines in ozonolysis, hydration, metathesis and epoxidation reactions were also investigated.
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Affiliation(s)
- A Ziyaei Halimehjani
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-9516, Tehran, Iran.
- Faculty of Chemistry, Kharazmi University, 49 Mofateh Street, P. O. Box 15719-14911, Tehran, Iran.
| | - B Breit
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albert strasse 21, Freiburg im Breisgau, 79104, Germany.
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4
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Tyszka-Gumkowska A, Kajetanowicz A, Grela K. Protocol for olefin metathesis reactions of hydrophobic substrates performed in aqueous emulsion with mechanical stirring or with microwaves support. STAR Protoc 2022; 3:101671. [PMID: 36149799 PMCID: PMC9508584 DOI: 10.1016/j.xpro.2022.101671] [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: 06/13/2022] [Revised: 07/05/2022] [Accepted: 08/05/2022] [Indexed: 01/25/2023] Open
Abstract
In the presented protocol, we describe the olefin metathesis of hydrophobic substrates in water emulsions using ruthenium catalysts in the presence of air. We detail the testing of mechanical foaming for emulsification and the use of microwave heating to optimize metathesis reaction efficiency. By utilizing relatively low catalyst loading and ensuring simple product isolation, the steps outlined in this protocol extend known methods for the aqueous metathesis techniques. For complete details on the use and execution of this protocol, please refer to Tyszka-Gumkowska et al. (2022).
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Affiliation(s)
- Agata Tyszka-Gumkowska
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Anna Kajetanowicz
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland,Corresponding author
| | - Karol Grela
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland,Corresponding author
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5
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Tyszka-Gumkowska A, Purohit VB, Nienałtowski T, Dąbrowski M, Kajetanowicz A, Grela K. Testing enabling techniques for olefin metathesis reactions of lipophilic substrates in water as a diluent. iScience 2022; 25:104131. [PMID: 35434568 PMCID: PMC9010768 DOI: 10.1016/j.isci.2022.104131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 02/21/2022] [Accepted: 03/16/2022] [Indexed: 11/29/2022] Open
Abstract
Olefin metathesis reactions of diverse polyfunctional substrates were conducted in water emulsions using two hydrophobic ruthenium catalysts in the presence of air. Instead of using surfactants to increase the efficiency of the metathesis reaction in water, ultrasound and microwave techniques were tested on a small-scale reaction, whereas conventional heating and mechanical stirring were effective enough to provide high conversion and selectivity on a larger scale. The developed conditions extend known protocols for the aqueous metathesis methodology, utilizing relatively low catalyst loadings and allowing for simple product isolation and purification. The established synthetic protocol was successfully adopted in the large-scale synthesis of a pharmaceutically related product – sildenafil (Viagra) derivative. Sustainable approach for metathesis reaction in water emulsion system on air. Utilization of enabling techniques for boosting metathesis under aqueous conditions. RCM of medically important sildenafil derivative.
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Affiliation(s)
- Agata Tyszka-Gumkowska
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Vishal B Purohit
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Tomasz Nienałtowski
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland.,Polpharma SA Pharmaceutical Works, Pelplińska 19, 83-200 Starogard Gdański, Poland
| | - Michał Dąbrowski
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Anna Kajetanowicz
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Karol Grela
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
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6
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Yamada R, Sakata K, Yamada T. Electrochemical Synthesis of Substituted Morpholines via a Decarboxylative Intramolecular Etherification. Org Lett 2022; 24:1837-1841. [PMID: 35212222 DOI: 10.1021/acs.orglett.2c00377] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient method for the synthesis of 2,6-multisubstituted morpholines via an electrochemical intramolecular etherification has been developed. The method, which is operationally simple and easy to scale up, provides various substituted morpholine derivatives in high yields. The utility of this method is showcased by the synthesis of 2,2,6,6-tetrasubstituted morpholines, which are difficult to synthesize efficiently using previously reported strategies.
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Affiliation(s)
- Ryosuke Yamada
- Research Unit/Immunology & Inflammation, Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, 1000 Kamoshida-cho, Aoba-ku, Yokohama 227-0033, Japan
| | - Komei Sakata
- Research Unit/Immunology & Inflammation, Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, 1000 Kamoshida-cho, Aoba-ku, Yokohama 227-0033, Japan
| | - Takahiro Yamada
- Research Unit/Neuroscience, Sohyaku, Innovative Research Division, Mitsubishi Tanabe Pharma Corporation, 1000 Kamoshida-cho, Aoba-ku, Yokohama 227-0033, Japan
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7
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Ariyarathna JP, Alom NE, Roberts LP, Kaur N, Wu F, Li W. Lewis Acid-Catalyzed Halonium Generation for Morpholine Synthesis and Claisen Rearrangement. J Org Chem 2022; 87:2947-2958. [PMID: 35142512 DOI: 10.1021/acs.joc.1c02804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We disclose here practical strategies toward the synthesis of morpholines and Claisen rearrangement products based on the divergent reactivity of a common halonium intermediate. These reactions employ widely available alkenes in a Lewis acid-catalyzed halo-etherification process that can then transform them into the desired products with exceptional regioselectivity for both activated and unactivated olefins. Our mechanistic probe reveals an interesting regiochemical kinetic resolution process.
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Affiliation(s)
- Jeewani P Ariyarathna
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Nur-E Alom
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Leo P Roberts
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Navdeep Kaur
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Fan Wu
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Wei Li
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
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8
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Sarkar T, Talukdar K, Das BK, Shah TA, Debnath B, Punniyamurthy T. The transition-metal-catalyzed stereoselective ring-expansion of vinylaziridines and vinyloxiranes. Org Biomol Chem 2021; 19:3776-3790. [PMID: 33949586 DOI: 10.1039/d1ob00259g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The transition-metal-aided stereoselective construction of sp3-carbon-rich heterocyclic scaffolds using strained-ring systems has received considerable attention in recent years due to the prominent presence of these scaffolds in myriad natural products, bioactive molecules, and pharmaceutical components. In this area, the catalytic ring-enlargement of vinylaziridines and vinyloxiranes plays a predominant role when synthesizing high sp3-content biorelevant heterocyclic compounds. This article aims to portray recent advancements in the ring-expansion of vinylaziridines and vinyloxiranes for accessing densely functionalized stereoselective heterocycles that have been developed over the past five years, with an emphasis on the substrate scopes and mechanistic insights into the key methodologies, and it is arranged based on the transition metals used and the ring sizes of the heterocyclic scaffolds.
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Affiliation(s)
- Tanumay Sarkar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Kangkan Talukdar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Bijay Ketan Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Tariq A Shah
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India. and Government Srinagar Women's College, Zakura Srinagar 190006, India
| | - Bijoy Debnath
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
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9
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Okuma K, Qu Y, Nagahora N. Novel Reaction Course of Thiiranes to Vinyloxiranes: Reaction of Benzyne with Thiiranes and Aldehydes. HETEROCYCLES 2021. [DOI: 10.3987/com-21-14465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Lee NR, Moghadam FA, Braga FC, Lippincott DJ, Zhu B, Gallou F, Lipshutz BH. Sustainable Palladium-Catalyzed Tsuji-Trost Reactions Enabled by Aqueous Micellar Catalysis. Org Lett 2020; 22:4949-4954. [PMID: 32551706 DOI: 10.1021/acs.orglett.0c01329] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Palladium-catalyzed allylic substitution, or "Tsuji-Trost" reactions, can be run under micellar catalysis conditions featuring not only chemistry in water but also numerous combinations of reaction partners that require low levels of palladium, typically on the order of 1000 ppm (0.1 mol %). These couplings are further characterized by especially mild conditions, leading to a number of cases not previously reported in an aqueous micellar medium. Inclusion of diverse nucleophiles, such as N-H heterocycles, alcohols, dicarbonyl compounds, and sulfonamides is described. Intramolecular cyclizations further illustrate the broad utility of this process. In addition to recycling studies, a multigram scale example is reported, indicative of the prospects for scale up.
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Affiliation(s)
- Nicholas R Lee
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Farbod A Moghadam
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Felipe C Braga
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Daniel J Lippincott
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Bingchun Zhu
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
| | | | - Bruce H Lipshutz
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, United States
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11
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Tzara A, Xanthopoulos D, Kourounakis AP. Morpholine As a Scaffold in Medicinal Chemistry: An Update on Synthetic Strategies. ChemMedChem 2020; 15:392-403. [PMID: 32017384 DOI: 10.1002/cmdc.201900682] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/21/2020] [Indexed: 12/14/2022]
Abstract
Morpholine is a frequently used heterocycle in medicinal chemistry and a privileged structural component of bioactive molecules. This is mainly due to its contribution to a plethora of biological activities as well as to an improved pharmacokinetic profile of such bioactive molecules. The synthesis of morpholines is a subject of much study due to their biological and pharmacological importance, with the last such review being published in 2013. Here, an overview of the main approaches toward morpholine synthesis or functionalization is presented, emphasizing on novel work which has not been reviewed so far. This review is an update on synthetic strategies leading to easily accessible libraries of bioactives which are of interest for drug discovery projects.
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Affiliation(s)
- Ariadni Tzara
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, National and Kapodistrian University of Athens, 15771, Athens, Greece
| | - Dimitrios Xanthopoulos
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, National and Kapodistrian University of Athens, 15771, Athens, Greece
| | - Angeliki P Kourounakis
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, National and Kapodistrian University of Athens, 15771, Athens, Greece
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12
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Claraz A, Courant T, Masson G. Electrochemical Intramolecular Oxytrifluoromethylation of N-Tethered Alkenyl Alcohols: Synthesis of Functionalized Morpholines. Org Lett 2020; 22:1580-1584. [DOI: 10.1021/acs.orglett.0c00176] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aurélie Claraz
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301,
Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, Gif-sur-Yvette 91198 Cedex, France
| | - Thibaut Courant
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301,
Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, Gif-sur-Yvette 91198 Cedex, France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301,
Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, Gif-sur-Yvette 91198 Cedex, France
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13
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Das D, Mukherjee P, Das AR. "On water" palladium catalyzed diastereoselective boronic acid addition to structurally diverse cyclopropane nitriles. Org Biomol Chem 2020; 18:8886-8898. [PMID: 33108794 DOI: 10.1039/d0ob00077a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient palladium catalyzed diastereoselective addition of arylboronic acids to complex spirocyclopropyl dinitriles is developed in the presence of a catalytic amount of 4-dodecylbenzenesulphonic acid (DBSA) as a Brønsted acid surfactant in aqueous media. The protocol is also found to be highly effective when different types of nitrile compounds and organo-boron compounds are used. The overall reaction has been found to be very cost efficient since it requires low catalyst loading, mild thermal energy and short reaction time. Wide substrate scope, operational simplicity, good to excellent product yield, and use of green solvents make the reaction a practical route to transform nitrile into a keto functionality in biorelevant heterocyclic scaffolds. The scale-up synthesis of the target scaffolds can also be achieved with ease which also signifies the practicability of this protocol.
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Affiliation(s)
- Dwaipayan Das
- Department of Chemistry, University of Calcutta 92, A. P. C. Road, Kolkata-700009, India.
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14
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Jadhav SB, Chegondi R. Diastereoselective Desymmetrization of p-Quinamines through Regioselective Ring Opening of Epoxides and Aziridines. Org Lett 2019; 21:10115-10119. [DOI: 10.1021/acs.orglett.9b04110] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Sandip B. Jadhav
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rambabu Chegondi
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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15
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Aubineau T, Cossy J. Metal-Catalyzed Cyclization: Synthesis of (Benzo)morpholines and (Benzo)[1,4]dihydrooxazines. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900927] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Thomas Aubineau
- Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, CNRS; PSL University; 10 rue Vauquelin 75005 Paris France
| | - Janine Cossy
- Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, CNRS; PSL University; 10 rue Vauquelin 75005 Paris France
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16
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Duchamp E, Simard BD, Hanessian S. Reductive Fragmentation of Tetrazoles: Mechanistic Insights and Applications toward the Stereocontrolled Synthesis of 2,6-Polysubstituted Morpholines. Org Lett 2019; 21:6593-6596. [DOI: 10.1021/acs.orglett.9b01842] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Edouard Duchamp
- Department of Chemistry, Université de Montréal, P.O. Box 6128,
Succ., Centre-ville, Montréal, Québec, Canada H3C 3J7
| | - Benoit Deschênes Simard
- Department of Chemistry, Université de Montréal, P.O. Box 6128,
Succ., Centre-ville, Montréal, Québec, Canada H3C 3J7
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal, P.O. Box 6128,
Succ., Centre-ville, Montréal, Québec, Canada H3C 3J7
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17
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