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Zhao L, Yan Y, Wei ZL, Liao WW. Organocatalytic Allylic Alkylation of α-(Alkylideneamino)nitriles and Its Application in the Preparation of Multisubstituted 1-Pyrrolines. J Org Chem 2022; 87:10090-10104. [PMID: 35816383 DOI: 10.1021/acs.joc.2c01072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A synthetic approach for the construction of functionalized diverse 1-pyrrolines incorporating β-quaternary carbon centers under mild reaction conditions has been reported, in which α-allyl α-(alkylideneamino)nitriles generated from a Lewis base-catalyzed allylic alkylation reaction engaged in a Lewis base-mediated tandem intramolecular cyclization to deliver the targeted molecules in a catalytically atom-economic fashion.
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Affiliation(s)
- Lang Zhao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Yan Yan
- State Key Lab of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Zhong-Lin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
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Korkmaz E, Zora M. Synthesis of 3-[(4-Nitrophenyl)thio]-Substituted 4-Methylene-1-pyrrolines from N-Propargylic β-Enaminones. J Org Chem 2020; 85:4937-4950. [PMID: 32154723 DOI: 10.1021/acs.joc.0c00109] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A facile and efficient method for the synthesis of 3-[(4-nitrophenyl)thio]-substituted 4-methylene-1-pyrrolines is described. When treated with 4-nitrobenzenesulfenyl chloride in refluxing acetonitrile, N-propargylic β-enaminones produced α-sulfenylated N-propargylic β-enaminones, which, in the presence of sodium hydride or cesium carbonate, underwent nucleophilic cyclization to afford 4-methylene-3-[(4-nitrophenyl)thio]-1-pyrrolines in good to high yields. It was shown for the first time that on N-propargylic β-enaminone systems, α-sulfenylation dominates over the formation of thiirenium ion. This one-pot two-step process was found to be general for a variety of N-propargylic β-enaminones and demonstrated good tolerance to a diversity of aromatic and heteroaromatic groups with electron-withdrawing and electron-donating substituents. This process is also applicable to the cyclization of internal alkyne-tethered N-propargylic β-enaminones. The enrichment of 1-pyrroline core with an aryl sulfide moiety might exhibit potential for the synthesis of molecules of pharmacological interest.
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Affiliation(s)
- Esra Korkmaz
- Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey
| | - Metin Zora
- Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey
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Soeta T, Matsumoto A, Ukaji Y. Development of a Synthetic Method for Multifunctionalized Pyrroles Using Isocyanide Dichloride as a Key Intermediate. J Org Chem 2018; 83:4831-4834. [DOI: 10.1021/acs.joc.8b00185] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Takahiro Soeta
- Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
| | - Akihiro Matsumoto
- Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
| | - Yutaka Ukaji
- Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
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Generation of a substituted 1,2,4-thiadiazole ring via the [3+2] cycloaddition reaction of benzonitrile sulfide toward trichloroacetonitrile. A DFT study of the regioselectivity and of the molecular mechanism. CR CHIM 2015. [DOI: 10.1016/j.crci.2015.09.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Guo ZW, Huang X, Mao JM, Zhu WD, Xie JW. Diastereoselective synthesis of polysubstituted Δ1-pyrroline derivatives from in situ generated nitrile ylides. RSC Adv 2013. [DOI: 10.1039/c3ra44736g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Cheng Y, Peng JH, Li JQ. Orthogonal Synthesis of Densely Functionalized Pyrroles and Thiophenes from the Reactions of Imidazo[1,5-a]pyridine Carbene-Derived Zwitterions with Electron-Deficient Alkynes. J Org Chem 2010; 75:2382-8. [DOI: 10.1021/jo100225r] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ying Cheng
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Jiang-Hua Peng
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Jia-Qi Li
- College of Chemistry, Beijing Normal University, Beijing 100875, China
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Abstract
This critical review, which is relevant to researchers in synthetic organic chemistry, focuses on asymmetric 1,3-dipolar cycloadditions with acrylamides. The use of chiral acrylamides as dipolarophiles leads to high levels of stereocontrol, due to conformational constraint in the acrylamides. Employment of chiral tertiary acrylamides containing nitrogen heterocycles is particularly effective in controlling the stereoselectivity. Following a general overview of 1,3-dipolar cycloadditions, the main body of the review focuses on asymmetric 1,3-dipolar cycloadditions of acrylamides with nitrile oxides, nitrones, diazoalkanes and azomethine ylides, with particular emphasis on the rationale for the observed stereocontrol (215 references).
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Affiliation(s)
- Marie Kissane
- Department of Chemistry, Analytical and Biological Chemistry Research Facility, University College Cork, Cork, Ireland
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Sibi MP, Soeta T, Jasperse CP. Nitrile Ylides: Diastereoselective Cycloadditions using Chiral Oxzolidinones Without Lewis Acid. Org Lett 2009; 11:5366-9. [DOI: 10.1021/ol9018584] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mukund P. Sibi
- Department of Chemistry and Molecular Biology, North Dakota State University, NDSU Department 2735, PO Box 6050, Fargo, North Dakota 58108-6050
| | - Takahiro Soeta
- Department of Chemistry and Molecular Biology, North Dakota State University, NDSU Department 2735, PO Box 6050, Fargo, North Dakota 58108-6050
| | - Craig P. Jasperse
- Department of Chemistry and Molecular Biology, North Dakota State University, NDSU Department 2735, PO Box 6050, Fargo, North Dakota 58108-6050
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Melša P, Čajan M, Havlas Z, Mazal C. Substituent Effect on exo Stereoselectivity in the 1,3-Dipolar Cycloaddition Reaction of Tulipalin A with Nitrile Ylides. J Org Chem 2008; 73:3032-9. [DOI: 10.1021/jo702563n] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Petr Melša
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Department of Inorganic Chemistry, Faculty of Science, Palacký University, Křížkovského 10, 771 47 Olomouc, and Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Michal Čajan
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Department of Inorganic Chemistry, Faculty of Science, Palacký University, Křížkovského 10, 771 47 Olomouc, and Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Zdeněk Havlas
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Department of Inorganic Chemistry, Faculty of Science, Palacký University, Křížkovského 10, 771 47 Olomouc, and Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Ctibor Mazal
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Department of Inorganic Chemistry, Faculty of Science, Palacký University, Křížkovského 10, 771 47 Olomouc, and Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
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