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Brandner L, Müller TJJ. Multicomponent synthesis of chromophores – The one-pot approach to functional π-systems. Front Chem 2023; 11:1124209. [PMID: 37007054 PMCID: PMC10065161 DOI: 10.3389/fchem.2023.1124209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 01/26/2023] [Indexed: 03/19/2023] Open
Abstract
Multicomponent reactions, conducted in a domino, sequential or consecutive fashion, have not only considerably enhanced synthetic efficiency as one-pot methodology, but they have also become an enabling tool for interdisciplinary research. The highly diversity-oriented nature of the synthetic concept allows accessing huge structural and functional space. Already some decades ago this has been recognized for life sciences, in particular, lead finding and exploration in pharma and agricultural chemistry. The quest for novel functional materials has also opened the field for diversity-oriented syntheses of functional π-systems, i.e. dyes for photonic and electronic applications based on their electronic properties. This review summarizes recent developments in MCR syntheses of functional chromophores highlighting syntheses following either the framework forming scaffold approach by establishing connectivity between chromophores or the chromogenic chromophore approach by de novo formation of chromophore of interest. Both approaches warrant rapid access to molecular functional π-systems, i.e. chromophores, fluorophores, and electrophores for various applications.
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2
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Tathe AG, Saswade SS, Patil NT. Gold-catalyzed multicomponent reactions. Org Chem Front 2023. [DOI: 10.1039/d3qo00272a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Multicomponent reactions (MCRs) have emerged as an important branch in organic synthesis for the creation of complex molecular structures. This review is focused on gold-catalyzed MCRs with a special emphasis on the recent developments.
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3
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Nikoofar K, Yielzoleh FM. High-component reactions (HCRs): An overview of MCRs containing seven or more components as versatile tools in organic synthesis. Curr Org Synth 2021; 19:115-147. [PMID: 34515008 DOI: 10.2174/1570179418666210910111208] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/28/2021] [Accepted: 07/07/2021] [Indexed: 11/22/2022]
Abstract
Recently, multi-component reactions (MCRs) have gained special attention due to their versatility for the synthesis of polycyclic heterocycles. Moreover, their applicability can become more widespread as they can be combined together as a union of MCRs. In this overview, the authors have tried to collect the MCRs containing more than seven components that can lead to effectual heterocycles in organic and/or pharmaceutical chemistry. The review contains papers published up to the end of 2020. The subject is classified based on the number of substrates, such as seven-, eight-, nine-, ten-, and more components. The authors expect their report to be helpful for researchers to clarify their route to significant MCRs.
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Affiliation(s)
- Kobra Nikoofar
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran. Iran
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4
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Visbal R, Graus S, Herrera RP, Gimeno MC. Gold Catalyzed Multicomponent Reactions beyond A³ Coupling. Molecules 2018; 23:E2255. [PMID: 30181514 PMCID: PMC6225195 DOI: 10.3390/molecules23092255] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 08/30/2018] [Accepted: 08/31/2018] [Indexed: 02/02/2023] Open
Abstract
The preparation of complex architectures has inspired the search for new methods and new processes in organic synthesis. Multicomponent reactions have become an interesting approach to achieve such molecular diversity and complexity. This review intends to illustrate important gold-catalyzed examples for the past ten years leading to interesting skeletons involved in biologically active compounds.
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Affiliation(s)
- Renso Visbal
- Departamento de Ciencias Naturales y Exactas, Universidad de la Costa, Calle 58 #55-66, 080002 Barranquilla, Colombia.
| | - Sara Graus
- Laboratorio de Organocatálisis Asimétrica. Departamento de Química Orgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC-Universidad de Zaragoza. C/Pedro Cerbuna 12, E-50009 Zaragoza, Spain.
| | - Raquel P Herrera
- Laboratorio de Organocatálisis Asimétrica. Departamento de Química Orgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC-Universidad de Zaragoza. C/Pedro Cerbuna 12, E-50009 Zaragoza, Spain.
| | - M Concepción Gimeno
- Departamento de Química Inorgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza. C/Pedro Cerbuna, No. 12, E-50009 Zaragoza, Spain.
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5
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Yagyu T, Takemoto Y, Yoshimura A, Zhdankin VV, Saito A. Iodine(III)-Catalyzed Formal [2 + 2 + 1] Cycloaddition Reaction for Metal-Free Construction of Oxazoles. Org Lett 2017; 19:2506-2509. [DOI: 10.1021/acs.orglett.7b00742] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takuma Yagyu
- Division
of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan, and
| | - Yusuke Takemoto
- Division
of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan, and
| | - Akira Yoshimura
- Department
of Chemistry and Biochemistry, University of Minnesota, Duluth, Minnesota 55812 United States
| | - Viktor V. Zhdankin
- Department
of Chemistry and Biochemistry, University of Minnesota, Duluth, Minnesota 55812 United States
| | - Akio Saito
- Division
of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan, and
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6
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Ohura A, Itoh T, Ishida H, Saito A, Yamamoto K. Three-Component Regioselective Synthesis of Tetrahydrofuro[2,3-d]oxazoles and Their Efficient Conversion to Oxazoles. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700074] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Arisa Ohura
- Laboratory of Drug Design and Medicinal Chemistry; Showa Pharmaceutical University; 3-3165 Higashi-Tamagawagakuen, Machida Tokyo 194-8543 Japan
| | - Toshimasa Itoh
- Laboratory of Drug Design and Medicinal Chemistry; Showa Pharmaceutical University; 3-3165 Higashi-Tamagawagakuen, Machida Tokyo 194-8543 Japan
| | - Hiroaki Ishida
- Laboratory of Drug Design and Medicinal Chemistry; Showa Pharmaceutical University; 3-3165 Higashi-Tamagawagakuen, Machida Tokyo 194-8543 Japan
| | - Akio Saito
- Division of Applied Chemistry, Institute of Engineering; Tokyo University of Agriculture and Technology; 2-24-16 Naka-cho, Koganei Tokyo 184-8588 Japan
| | - Keiko Yamamoto
- Laboratory of Drug Design and Medicinal Chemistry; Showa Pharmaceutical University; 3-3165 Higashi-Tamagawagakuen, Machida Tokyo 194-8543 Japan
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7
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Martínez A, Moreno-Blázquez S, Rodríguez-Diéguez A, Ramos A, Fernández-Galán R, Antiñolo A, Carrillo-Hermosilla F. Simple ZnEt2as a catalyst in carbodiimide hydroalkynylation: structural and mechanistic studies. Dalton Trans 2017; 46:12923-12934. [DOI: 10.1039/c7dt02700a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Simple ZnEt2is an efficient catalyst for the addition of terminal alkynes to carbodiimides, through amidinate complexes, and consecutive isocyanate addition and intramolecular cyclohydroamination.
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Affiliation(s)
- Antonio Martínez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Dpto. de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - Sonia Moreno-Blázquez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Dpto. de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | | | - Alberto Ramos
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Dpto. de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - Rafael Fernández-Galán
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Dpto. de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - Antonio Antiñolo
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Dpto. de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - Fernando Carrillo-Hermosilla
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Dpto. de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
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8
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Ibrar A, Khan I, Abbas N, Farooq U, Khan A. Transition-metal-free synthesis of oxazoles: valuable structural fragments in drug discovery. RSC Adv 2016. [DOI: 10.1039/c6ra19324b] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
This review article encapsulates the recent developments in the metal-free approaches used to construct oxazole moiety.
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Affiliation(s)
- Aliya Ibrar
- Department of Chemistry
- COMSATS Institute of Information Technology
- Abbottabad-22060
- Pakistan
| | - Imtiaz Khan
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad-45320
- Pakistan
| | - Naeem Abbas
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad-45320
- Pakistan
| | - Umar Farooq
- Department of Chemistry
- COMSATS Institute of Information Technology
- Abbottabad-22060
- Pakistan
| | - Ajmal Khan
- Department of Chemistry
- COMSATS Institute of Information Technology
- Abbottabad-22060
- Pakistan
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9
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Wong VHL, White AJP, Hor TSA, Hii KKM. Silver-Catalyzed Cyclization of Propargylic Amides to Oxazolines. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500610] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Querard P, Girard SA, Uhlig N, Li CJ. Gold-catalyzed tandem reactions of amide-aldehyde-alkyne coupling and cyclization-synthesis of 2,4,5-trisubstituted oxazoles. Chem Sci 2015; 6:7332-7335. [PMID: 29861964 PMCID: PMC5950834 DOI: 10.1039/c5sc02933c] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Accepted: 10/05/2015] [Indexed: 12/13/2022] Open
Abstract
We report the first cationic gold(i)-catalyzed one-pot reaction of amide, alkyne and aldehyde followed by cyclization, to successfully access highly substituted oxazoles derivatives in good yields. A single catalyst allows the occurring of this multi-step reaction atom- and step-economically, with water as the only theoretical side product.
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Affiliation(s)
- Pierre Querard
- Department of Chemistry , FQRNT Center for Green Chemistry and Catalysis , McGill University , 801 Sherbrooke Street West , Montreal , Quebec H3A 0B8 , Canada .
| | - Simon A Girard
- Department of Chemistry , FQRNT Center for Green Chemistry and Catalysis , McGill University , 801 Sherbrooke Street West , Montreal , Quebec H3A 0B8 , Canada .
| | - Nick Uhlig
- Department of Chemistry , FQRNT Center for Green Chemistry and Catalysis , McGill University , 801 Sherbrooke Street West , Montreal , Quebec H3A 0B8 , Canada .
| | - Chao-Jun Li
- Department of Chemistry , FQRNT Center for Green Chemistry and Catalysis , McGill University , 801 Sherbrooke Street West , Montreal , Quebec H3A 0B8 , Canada .
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11
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12
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13
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von Wachenfeldt H, Polukeev AV, Loganathan N, Paulsen F, Röse P, Garreau M, Wendt OF, Strand D. Cyclometallated gold(iii) aryl-pyridine complexes as efficient catalysts for three-component synthesis of substituted oxazoles. Dalton Trans 2015; 44:5347-53. [DOI: 10.1039/c4dt03806a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclometallated gold(iii) complexes efficiently catalyze the multicomponent reaction between imines, alkynes, and acyl chlorides to form trisubstituted oxazoles.
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Affiliation(s)
- Henrik von Wachenfeldt
- Centre for Analysis and Synthesis
- Department of Chemistry
- Lund University
- 221 00 Lund
- Sweden
| | - Alexey V. Polukeev
- Centre for Analysis and Synthesis
- Department of Chemistry
- Lund University
- 221 00 Lund
- Sweden
| | - Nagarajan Loganathan
- Centre for Analysis and Synthesis
- Department of Chemistry
- Lund University
- 221 00 Lund
- Sweden
| | - Filip Paulsen
- Centre for Analysis and Synthesis
- Department of Chemistry
- Lund University
- 221 00 Lund
- Sweden
| | - Philipp Röse
- Centre for Analysis and Synthesis
- Department of Chemistry
- Lund University
- 221 00 Lund
- Sweden
| | - Marion Garreau
- Centre for Analysis and Synthesis
- Department of Chemistry
- Lund University
- 221 00 Lund
- Sweden
| | - Ola F. Wendt
- Centre for Analysis and Synthesis
- Department of Chemistry
- Lund University
- 221 00 Lund
- Sweden
| | - Daniel Strand
- Centre for Analysis and Synthesis
- Department of Chemistry
- Lund University
- 221 00 Lund
- Sweden
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14
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Hu Y, Yi R, Yu X, Xin X, Wang C, Wan B. O-Transfer-facilitated cyclizations of propargylamides with TMSN3: selective synthesis of tetrazoles and dihydroimidazoles. Chem Commun (Camb) 2015; 51:15398-401. [DOI: 10.1039/c5cc05715a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we disclose the O-transfer-facilitated cyclizations of propargylamides with TMSN3 to selectively afford functionalized tetrazoles and diiodomethylated dihydroimidazoles.
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Affiliation(s)
- Yancheng Hu
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Ruxia Yi
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Xinzhang Yu
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Xiaoyi Xin
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Chunxiang Wang
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Boshun Wan
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
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15
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Zhang L, Zhao X. Regioselective Formation of 2,4,5-Trisubstituted Oxazoles through Transition-Metal Free Heterocyclization of 1,3-Diynes with N,O-Bis(trimethylsiyl)acetamide. Org Lett 2014; 17:184-6. [DOI: 10.1021/ol5030986] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Liang Zhang
- Department
of Chemistry, State Key Laboratory of Pollution Control and Resource
Reuse, Tongji University, 1239 Siping Road, 200092 Shanghai, P. R. China
| | - Xiaoming Zhao
- Department
of Chemistry, State Key Laboratory of Pollution Control and Resource
Reuse, Tongji University, 1239 Siping Road, 200092 Shanghai, P. R. China
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16
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Romero-Estudillo I, Batchu VR, Boto A. One-Pot Conversion of Amino Acids into 2,5-Disubstituted Oxazoles: No Metals Needed. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400496] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Wang J, Luo S, Huang J, Mao T, Zhu Q. Palladium-catalyzed imidoylative cyclization of α-isocyanoacetamides: efficient access to C2-diversified oxazoles. Chemistry 2014; 20:11220-4. [PMID: 25099222 DOI: 10.1002/chem.201403033] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Indexed: 01/11/2023]
Abstract
A novel procedure for the synthesis of C2-diversified oxazoles, through palladium-catalyzed imidoylative cyclization of α-isocyanoacetamides with aryl, vinyl, alkynyl halides, or triflates, was developed. Migratory insertion of isocyanide into a Csp3-palladium(II) intermediate in a cascade process was also realized, generating alkyl-substituted oxazoles. Therefore, oxazoles functionalized at the C2 position with sp, sp(2), and sp(3) hybridized carbon atoms are accessible by applying this method.
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Affiliation(s)
- Jian Wang
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530 (P.R. China), Fax: (+86) 20-3201-5299
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18
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Abbiati G, Rossi E. Silver and gold-catalyzed multicomponent reactions. Beilstein J Org Chem 2014; 10:481-513. [PMID: 24605168 PMCID: PMC3943762 DOI: 10.3762/bjoc.10.46] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 01/17/2014] [Indexed: 12/22/2022] Open
Abstract
Silver and gold salts and complexes mainly act as soft and carbophilic Lewis acids even if their use as σ-activators has been rarely reported. Recently, transformations involving Au(I)/Au(III)-redox catalytic systems have been reported in the literature. In this review we highlight all these aspects of silver and gold-mediated processes and their application in multicomponent reactions.
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Affiliation(s)
- Giorgio Abbiati
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Via Venezian, 21 - 20133 Milano, Italy
| | - Elisabetta Rossi
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Via Venezian, 21 - 20133 Milano, Italy
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19
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Five-Membered Ring Systems with O & N Atoms. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/b978-0-08-100017-5.00011-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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21
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Arrowsmith M, Shepherd WMS, Hill MS, Kociok-Köhn G. Alkaline earth catalysis for the 100% atom-efficient three component assembly of imidazolidin-2-ones. Chem Commun (Camb) 2014; 50:12676-9. [PMID: 25209547 DOI: 10.1039/c4cc05223d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A variety of functionalised imidazolidin-2-ones may be synthesised under very mild reaction conditions using non-toxic and cost-effective alkaline earth bis(amide) pre-catalysts in a 100% atom-efficient, intermolecular one-pot assembly from inexpensive alkyne and cumulene reagents.
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22
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von Wachenfeldt H, Strand D. Synthesis of Formylsilanes through Oxidative Cleavage of α-Silyl Glycols. J Org Chem 2013; 78:12268-73. [DOI: 10.1021/jo402123j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Henrik von Wachenfeldt
- Centre
for Analysis and Synthesis,
Department of Chemistry, Lund University, PO Box 124, S-221 00 Lund, Sweden
| | - Daniel Strand
- Centre
for Analysis and Synthesis,
Department of Chemistry, Lund University, PO Box 124, S-221 00 Lund, Sweden
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23
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Odabachian Y, Tong S, Wang Q, Wang MX, Zhu J. Zinc Bromide Promoted Coupling of Isonitriles with Carboxylic Acids To Form 2,4,5-Trisubstituted Oxazoles. Angew Chem Int Ed Engl 2013; 52:10878-82. [DOI: 10.1002/anie.201305506] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Indexed: 12/19/2022]
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24
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Odabachian Y, Tong S, Wang Q, Wang MX, Zhu J. Zinc Bromide Promoted Coupling of Isonitriles with Carboxylic Acids To Form 2,4,5-Trisubstituted Oxazoles. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305506] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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25
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v. Wachenfeldt H, Paulsen F, Sundin A, Strand D. Synthesis of Substituted Oxazoles fromN-Benzyl Propargyl Amines and Acid Chlorides. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300285] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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