1
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Wei L, Yuan G. Synthesis of 2,4,5-trisubstituted oxazoles from 1,2-diketones and amines by using an electrochemical method. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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2
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Liang F, Liu K, Zhao C, Shang Z, Kong H, Yin Y, Zhu Y, Sun Y, Yao J. Convergent Domino Cyclization: Oxidative [3+1+1] Annulation for One‐Pot Synthesis of 2‐Quinoline‐4,5‐diaryl‐oxazoles from Methyl Azaarenes, Benzoins and NH
4
OAc. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001561] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Fei‐Fei Liang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University Shandong, Yantai 264005 P. R. China
| | - Kai‐Xuan Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University Shandong, Yantai 264005 P. R. China
| | - Cong Zhao
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University Shandong, Yantai 264005 P. R. China
| | - Zhi‐Hao Shang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University Shandong, Yantai 264005 P. R. China
| | - Hong‐Mei Kong
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University Shandong, Yantai 264005 P. R. China
| | - Ya‐Qing Yin
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University Shandong, Yantai 264005 P. R. China
| | - Yan‐Ping Zhu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University Shandong, Yantai 264005 P. R. China
| | - Yuan‐Yuan Sun
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University Shandong, Yantai 264005 P. R. China
| | - Jian‐Wen Yao
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University Shandong, Yantai 264005 P. R. China
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3
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Nan GM, Li X, Yao TY, Yan TX, Wen LR, Li M. InCl3-catalyzed 5-exo-dig cyclization/1,6-conjugate addition of N-propargylamides with p-QMs to construct oxazole derivatives. Org Biomol Chem 2020; 18:1780-1784. [DOI: 10.1039/c9ob02651g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An InCl3-catalyzed tandem intramolecular 5-exo-dig cyclization/1,6-conjugate addition/aromatization of N-propargylamides with p-QMs to produce oxazoles tethering diarylmethane has been successfully developed.
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Affiliation(s)
- Guang-Ming Nan
- University and College Key Lab of Natural Product Chemistry and Application in Xinjiang
- Yili Normal University
- Yining 835000
- China
| | - Xue Li
- University and College Key Lab of Natural Product Chemistry and Application in Xinjiang
- Yili Normal University
- Yining 835000
- China
| | - Tian-Yu Yao
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science & Technology
- Qingdao 266042
- China
| | - Ting-Xun Yan
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science & Technology
- Qingdao 266042
- China
| | - Li-Rong Wen
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science & Technology
- Qingdao 266042
- China
| | - Ming Li
- University and College Key Lab of Natural Product Chemistry and Application in Xinjiang
- Yili Normal University
- Yining 835000
- China
- State Key Laboratory Base of Eco-Chemical Engineering
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4
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Dai C, Xie Z, Li M, Wang C. Cs
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CO
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‐Promoted [2+2+2] Cycloaddition Reaction of 4‐Aryliden‐5(4H)‐Oxazolones and β‐Nitrostyrenes: Access to Spirocycloalkyloxazolones. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900632] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Chenlu Dai
- School of Chemistry and Chemical EngineeringYangzhou University 180 Siwangting Street Yangzhou 225002 P. R. China
| | - Zengyang Xie
- College of Basic MedicineJining Medical University Jining 272067 P. R. China
| | - Mingshuang Li
- School of Chemistry and Chemical EngineeringYangzhou University 180 Siwangting Street Yangzhou 225002 P. R. China
| | - Cunde Wang
- School of Chemistry and Chemical EngineeringYangzhou University 180 Siwangting Street Yangzhou 225002 P. R. China
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5
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Dai C, Luo N, Wang S, Wang C. Cesium-Carbonate-Mediated Benzalation of Substituted 2-Aryl-3-nitro-2 H-chromenes with Substituted 4-Benzylidene-2-phenyloxazol-5(4 H)-ones. Org Lett 2019; 21:2828-2832. [PMID: 30939016 DOI: 10.1021/acs.orglett.9b00776] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Cs2CO3-mediated domino benzalation reaction with a variety of 2-aryl-3-nitro-2 H-chromenes and 4-benzylidene-2-phenyloxazol-5(4 H)-ones has been realized. The reaction proceeds smoothly with a broad substrate scope, thus providing a variety of substituted ( Z)-4-(( Z)-benzylidene)chroman-3-one oximes in moderate to high yields, which were easily transformed into biologically important 4 H-chromeno[3,4- c]isoxazoles.
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Affiliation(s)
- Chenlu Dai
- School of Chemistry and Chemical Engineering , Yangzhou University , 180 Siwangting Street , Yangzhou 225002 , P.R. China
| | - Naili Luo
- School of Chemistry and Chemical Engineering , Yangzhou University , 180 Siwangting Street , Yangzhou 225002 , P.R. China
| | - Shan Wang
- School of Chemistry and Chemical Engineering , Yangzhou University , 180 Siwangting Street , Yangzhou 225002 , P.R. China
| | - Cunde Wang
- School of Chemistry and Chemical Engineering , Yangzhou University , 180 Siwangting Street , Yangzhou 225002 , P.R. China
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6
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Soliman HA, Kalmouch A, Awad HM, Abdel Wahed NAM. Synthesis of New Tetrazole Derivatives and Their Biological Evaluation. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218080273] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Kumar SV, Acharya A, Ila H. Synthesis of 2,4,5-Trisubstituted Oxazoles with Complementary Regioselectivity from α-Oxoketene Dithioacetals and β-(Methylthio)-β-(het)aryl-2-propenones. J Org Chem 2018; 83:6607-6622. [DOI: 10.1021/acs.joc.8b00900] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Siripuram Vijay Kumar
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research(JNCASR), Jakkur, Bangalore 560064, India
| | - Anand Acharya
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research(JNCASR), Jakkur, Bangalore 560064, India
| | - Hiriyakkanavar Ila
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research(JNCASR), Jakkur, Bangalore 560064, India
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8
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Tang X, Yang K, Zeng L, Liu Q, Chen H. Pd-catalyzed desulfitative arylation for the synthesis of 2,5-diarylated oxazole-4-carboxylates using dioxygen as the terminal oxidant. Org Biomol Chem 2017; 15:8504-8507. [DOI: 10.1039/c7ob01912b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A novel palladium-catalyzed approach for constructing 2,5-diarylated oxazole-4-carboxylates using sodium arylsulfinates as the aryl source has been demonstrated.
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Affiliation(s)
- Xiaodong Tang
- Guangdong Provincial Key Laboratory of New Drug Screening
- School of Pharmaceutical Sciences
- Southern Medical University
- Baiyun District
- P. R. China
| | - Kai Yang
- School of Pharmaceutical Sciences
- Gannan Medical University
- Ganzhou
- P. R. China
| | - Liying Zeng
- School of Traditional Chinese Medicine
- Southern Medical University
- Baiyun District
- P. R. China
| | - Qiang Liu
- School of Traditional Chinese Medicine
- Southern Medical University
- Baiyun District
- P. R. China
| | - Huoji Chen
- School of Traditional Chinese Medicine
- Southern Medical University
- Baiyun District
- P. R. China
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9
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A new synthesis of functionalized dialkyl maleate and fumarate derivatives by addition of amines to dialkyl acetylenedicarboxylates in the presence of NBS or NCS. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1855-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Liu Q, Zhang X, He Y, Hussain MI, Hu W, Xiong Y, Zhu X. Oxidative rearrangement strategy for synthesis of 2,4,5-trisubstituted oxazoles utilizing hypervalent iodine reagent. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.082] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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11
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Li E, Hu Z, Song L, Yu W, Chang J. Synthesis of 1,2,4-Triazolo[4,3-a
]pyridines and Related Heterocycles by Sequential Condensation and Iodine-Mediated Oxidative Cyclization. Chemistry 2016; 22:11022-7. [DOI: 10.1002/chem.201601744] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Indexed: 12/26/2022]
Affiliation(s)
- Ertong Li
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 P.R. China
| | - Zhiyuan Hu
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 P.R. China
| | - Lina Song
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 P.R. China
| | - Wenquan Yu
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 P.R. China
| | - Junbiao Chang
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 P.R. China
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12
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Imai S, Kikui H, Moriyama K, Togo H. One-pot preparation of 2,5-disubstituted and 2,4,5-trisubstituted oxazoles from aromatic ketones with molecular iodine, oxone, and trifluoromethanesulfonic acid in nitriles. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.06.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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13
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Gao WC, Hu F, Huo YM, Chang HH, Li X, Wei WL. I2-Catalyzed C–O Bond Formation and Dehydrogenation: Facile Synthesis of Oxazolines and Oxazoles Controlled by Bases. Org Lett 2015. [DOI: 10.1021/acs.orglett.5b01933] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Wen-Chao Gao
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R. China
| | - Fei Hu
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R. China
| | - Yu-Ming Huo
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R. China
| | - Hong-Hong Chang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R. China
| | - Xing Li
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R. China
| | - Wen-Long Wei
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R. China
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14
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Gazzola S, Beccalli EM, Borelli T, Castellano C, Chiacchio MA, Diamante D, Broggini G. Copper(II)-Catalyzed Alkoxyhalogenation of Alkynyl Ureas and Amides as a Route to Haloalkylidene-Substituted Heterocycles. J Org Chem 2015; 80:7226-34. [PMID: 26111065 DOI: 10.1021/acs.joc.5b01227] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A highly effective synthesis of haloalkylidene-substituted heterocycles by copper(II)-catalyzed cyclization of alkynyl ureas and secondary amides has been developed. The reaction, which involves a catalytic amount of CuCl2 and a stoichiometric amount of N-halosuccinimide, occurs selectively through an alkoxyhalogenation process. Alternatively, alkoxychlorination and alkoxybromination reactions can be performed working solely with stoichiometric CuCl2 and CuBr2, respectively.
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Affiliation(s)
- Silvia Gazzola
- †Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Egle M Beccalli
- ‡DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, via Venezian 21, 20133 Milano, Italy
| | - Tea Borelli
- †Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Carlo Castellano
- §Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
| | - Maria Assunta Chiacchio
- ∥Dipartimento di Scienze del Farmaco, Università di Catania, Viale Andrea Doria 6, 95125 Catania, Italy
| | - Daria Diamante
- †Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Gianluigi Broggini
- †Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
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15
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Xu C, Jia FC, Cai Q, Li DK, Zhou ZW, Wu AX. Intramolecular decarboxylative coupling as the key step in copper-catalyzed domino reaction: facile access to 2-(1,3,4-oxadiazol-2-yl)aniline derivatives. Chem Commun (Camb) 2015; 51:6629-32. [DOI: 10.1039/c5cc01116g] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Novel access to diverse 2-(1,3,4-oxadiazol-2-yl)aniline derivatives has been developed by introducing copper-catalyzed decarboxylative coupling for intramolecular C–O bond formation.
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Affiliation(s)
- Cheng Xu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Feng-Cheng Jia
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Qun Cai
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Deng-Kui Li
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Zhi-Wen Zhou
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
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16
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Lenartowicz P, Makowski M, Zarychta B, Ejsmont K. Crystal structure of N-(tert-but-oxy-carbon-yl)glycyl-(Z)-β-bromo-dehydro-alanine methyl ester [Boc-Gly-(β-Br)((Z))ΔAla-OMe]. Acta Crystallogr Sect E Struct Rep Online 2014; 70:596-8. [PMID: 25553002 PMCID: PMC4257433 DOI: 10.1107/s1600536814025677] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 11/24/2014] [Indexed: 11/10/2022]
Abstract
The title compound, C11H17BrN2O5, is a de-hydro-amino acid with a C=C bond between the α- and β-C atoms. The amino acid residues are linked trans to each other and there are no strong intra-molecular hydrogen bonds. The torsion angles indicate a non-helical conformation of the mol-ecule. The dipeptide folding is influenced by an inter-molecular N-H⋯O hydrogen bond and also minimizes steric repulsion. In the crystal, mol-ecules are linked by strong N-H⋯O hydrogen bonds, generating (001) sheets. The sheets are linked by weak C-H⋯O and C-H⋯Br bonds and short Br⋯Br [3.4149 (3) Å] inter-actions.
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Affiliation(s)
- Paweł Lenartowicz
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Maciej Makowski
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Bartosz Zarychta
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
| | - Krzysztof Ejsmont
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland
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