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Rahimi S, Ghandi M, Fallahnezhad M, Abbasi A. A facile synthesis of chromeno[3,4-c]spiropyrrolidine indenoquinoxalines via 1,3-dipolar cycloadditions. Mol Divers 2024; 28:133-142. [PMID: 36943611 DOI: 10.1007/s11030-023-10629-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 03/06/2023] [Indexed: 03/23/2023]
Abstract
A one-pot, four-component reaction for the synthesis of novel chromeno[3,4-c]spiropyrrolidine-indenoquinoxalines is described via a 1,3-dipolar cycloaddition of 3-acetyl-coumarins with the azomethine ylides followed by deacetylation and protonation (deuteration). The products were obtained in moderate to high yields, and their structures were confirmed by 1H NMR, 13C NMR, FT-IR, and MS spectroscopy.
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Affiliation(s)
- Shahnaz Rahimi
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155 6455, Tehran, Iran.
| | - Mehdi Ghandi
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155 6455, Tehran, Iran.
| | - Maryam Fallahnezhad
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155 6455, Tehran, Iran
| | - Alireza Abbasi
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155 6455, Tehran, Iran
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2
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Azomethine Ylides-Versatile Synthons for Pyrrolidinyl-Heterocyclic Compounds. Molecules 2023; 28:molecules28020668. [PMID: 36677727 PMCID: PMC9866015 DOI: 10.3390/molecules28020668] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Azomethine ylides are nitrogen-based three-atom components commonly used in [3+2]-cycloaddition reactions with various unsaturated 2π-electron components. These reactions are highly regio- and stereoselective and have attracted the attention of organic chemists with respect to the construction of diverse heterocycles potentially bearing four new contiguous stereogenic centers. This review article complies the most important [3+2]-cycloaddition reactions of azomethine ylides with various olefinic, unsaturated 2π-electron components (acyclic, alicyclic, heterocyclic, and exocyclic ones) reported over the past two decades.
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3
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Recent update on the role of N-methyl glycine as a building block for the construction of N-heterocyclic frameworks. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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4
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Kutyashev IB, Ulitko MV, Barkov AY, Zimnitskiy NS, Korotaev VY, Sosnovskikh VY. Regio- and Stereoselective 1,3-dipolar Cycloaddition of Azomethine Ylides Based on Isatins and (thia)proline to 3-nitro-2-(trifluoro(trichloro)methyl)-2H-chromenes: Synthesis and Cytotoxic Activity of 6-(trihalomethyl)-spiro[chromeno(thia)pyrrolizidine-11,3'-indolin]-2'-ones. Chem Heterocycl Compd (N Y) 2021. [DOI: 10.1007/s10593-021-02979-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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5
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Mishra M, Mishra NP, Raiguru BP, Das T, Mohapatra S, Nayak S, Mishra DR, Panda J, Sahoo DK. Microwave‐Assisted Iron(III)Chloride Catalyzed One‐Pot Michael Addition‐Cyclization for the Synthesis of 6
H
‐Chromeno[4’,3’:4,5] imidazo[1,2‐a]pyridine. ChemistrySelect 2021. [DOI: 10.1002/slct.202100165] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mitali Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Nilima P. Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Bishnu P. Raiguru
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Tapaswini Das
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Deepak R. Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Jasmine Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Dipak K. Sahoo
- National Institute of Science Education and Research Bhubaneswar 752050 Odisha India
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6
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Moshkin VS, Gorbunova EV, Buev EM, Sosnovskikh VY. Three Ways Aliphatic Aldehydes React with Nonstabilized Azomethine Ylides. Synlett 2020. [DOI: 10.1055/s-0039-1691562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Aliphatic aldehydes readily react with nonstabilized azomethine ylides in one of the three ways to give oxazolidines, pyrrolidines, or Mannich bases, depending on the structure of the starting compound and the reaction conditions. The use of N-(methoxymethyl)-N-[(trimethylsilyl)methyl]benzylamine in DMF provided 5-alkyloxazolidines in 40–97% yields. On the other hand, three-component reactions of aliphatic aldehydes bearing one α-hydrogen with N-methyl(benzyl)glycine and formaldehyde gives Mannich bases in yields of 47–98%. A similar reaction of aldehydes bearing branched alkyl groups and two hydrogen atoms at the α-position proceeds as a domino process that gives 3-alkyl-3-formylpyrrolidines in yields of 34–93%.
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7
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Jiang W, Sun J, Yan CG. Selective construction of functionalized chromeno[3,4- b]pyrroles and benzo[ c]chromenes viaa K 3PO 4promoted three-component reaction. NEW J CHEM 2020. [DOI: 10.1039/c9nj05693a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A K3PO4promoted three-component reaction of pivaloylacetonitrile (benzoylacetonitrile), dialkyl but-2-ynedioates and 2-aryl-3-nitrochromenes afforded functionalized chromeno[3,4-b]pyrroles.
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Affiliation(s)
- Wang Jiang
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- China
| | - Jing Sun
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- China
| | - Chao-Guo Yan
- College of Chemistry and Chemical Engineering
- Yangzhou University
- Yangzhou
- China
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8
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3-Nitro-2H-chromenes in [3+2] cycloaddition reaction with azomethine ylides derived from N-unsubstituted α-amino acids and isatins: regio- and stereoselective synthesis of spirochromeno[3,4-c]pyrrolidines. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02490-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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9
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Soares MIL, Gomes CSB, Nunes SCC, Pais AACC, Pinho e Melo TMVD. Phosphane-Catalyzed [3+2] Annulation of Allenoates with 3-Nitro-2H
-chromenes: Synthesis of Tetrahydrocyclopenta[c
]chromenes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900564] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Maria I. L. Soares
- CQC and Department of Chemistry; University of Coimbra; 3004-535 Coimbra Portugal
| | - Clara S. B. Gomes
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; 1049-001 Lisboa Portugal
| | - Sandra C. C. Nunes
- CQC and Department of Chemistry; University of Coimbra; 3004-535 Coimbra Portugal
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10
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Nayak S, Panda P, Mohapatra S, Raiguru B, Baral N. Microwave‐assisted One‐pot, Three‐component Regiospecific and Sterospecific Synthesis of Spiro Indanone Pyrrolidine/Piperidine Fused Nitrochromene Derivatives Through 1,3‐Dipolar Cycloaddition Reactions. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3534] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sabita Nayak
- Department of ChemistryRavenshaw University Cuttack Odisha India
- National Institute of Science Education and Research Bhubaneswar Odisha India
| | - Pravati Panda
- Department of ChemistryRavenshaw University Cuttack Odisha India
- National Institute of Science Education and Research Bhubaneswar Odisha India
| | - Seetaram Mohapatra
- Department of ChemistryRavenshaw University Cuttack Odisha India
- National Institute of Science Education and Research Bhubaneswar Odisha India
| | - Bishnuprasad Raiguru
- Department of ChemistryRavenshaw University Cuttack Odisha India
- National Institute of Science Education and Research Bhubaneswar Odisha India
| | - Nilofar Baral
- Department of ChemistryRavenshaw University Cuttack Odisha India
- National Institute of Science Education and Research Bhubaneswar Odisha India
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11
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Kutyashev IB, Ulitko MV, Barkov AY, Zimnitskiy NS, Korotaev VY, Sosnovskikh VY. A regio- and stereocontrolled approach to the synthesis of 4-CF3-substituted spiro[chromeno[3,4-c]pyrrolidine-oxindoles]viareversible [3+2] cycloaddition of azomethine ylides generated from isatins and sarcosine to 3-nitro-2-(trifluoromethyl)-2H-chromenes. NEW J CHEM 2019. [DOI: 10.1039/c9nj04498a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The first example of regio- and stereocontrolled synthesis of 4-CF3-spiro[chromeno[3,4-c]pyrrolidine-oxindoles] with anticancer activity.
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Affiliation(s)
- Igor B. Kutyashev
- Institute of Natural Sciences and Mathematics
- Ural Federal University
- Ekaterinburg
- Russian Federation
| | - Maria V. Ulitko
- Institute of Natural Sciences and Mathematics
- Ural Federal University
- Ekaterinburg
- Russian Federation
| | - Alexey Yu. Barkov
- Institute of Natural Sciences and Mathematics
- Ural Federal University
- Ekaterinburg
- Russian Federation
| | - Nikolay S. Zimnitskiy
- Institute of Natural Sciences and Mathematics
- Ural Federal University
- Ekaterinburg
- Russian Federation
| | - Vladislav Yu. Korotaev
- Institute of Natural Sciences and Mathematics
- Ural Federal University
- Ekaterinburg
- Russian Federation
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12
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3-Nitro-2-phenyl-2-(trifluoromethyl)-2H-chromenes in reaction with N-methylazomethine ylide: stereoselective synthesis of 3a,4,4-trisubstituted chromeno[3,4-c]pyrrolidines. Chem Heterocycl Compd (N Y) 2018. [DOI: 10.1007/s10593-018-2361-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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13
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Sun J, Jiang W, Yan CG. Convenient construction of tetrahydrochromeno[4',3':2,3]indolizino[8,7- b]indoles and tetrahydroindolizino[8,7- b]indoles via one-pot domino reaction. RSC Adv 2018; 8:28736-28744. [PMID: 35542494 PMCID: PMC9084333 DOI: 10.1039/c8ra05138k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 08/06/2018] [Indexed: 12/22/2022] Open
Abstract
The functionalized tetrahydrochromeno[4',3':2,3]indolizino[8,7-b]indoles were conveniently synthesized in high yields by one-pot domino reaction of tryptamines, alkyl propiolates and 2-aryl-3-nitro-2H-chromenes. Under similar conditions, the one-pot reaction of tryptamines, alkyl propiolates and β-nitroalkenes resulted in functionalized tetrahydroindolizino[8,7-b]indoles. The reaction mechanism involved sequential generation of β-enamino ester, Michael addition, Pictet-Spengler reaction and annulation process. The reaction showed high atomic economy and met the goals of sustainable chemistry.
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Affiliation(s)
- Jing Sun
- College of Chemistry & Chemical Engineering, Yangzhou University Yangzhou 225002 China +86-514-87975244 +86-514-87975531
| | - Wang Jiang
- College of Chemistry & Chemical Engineering, Yangzhou University Yangzhou 225002 China +86-514-87975244 +86-514-87975531
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering, Yangzhou University Yangzhou 225002 China +86-514-87975244 +86-514-87975531
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14
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Jiang W, Sun J, Liu RZ, Yan CG. Molecular diversity of the domino annulation reaction of 2-aryl-3-nitrochromenes with pivaloylacetonitriles. Org Biomol Chem 2018; 16:5816-5822. [DOI: 10.1039/c8ob01504j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In the presence of triethylamine, the domino annulation reaction of two molecules of pivaloylacetonitrile with one molecule of 2-aryl-3-nitrochromene in tetrahydrofuran resulted in the unprecedented imino-substituted dihydrofuro[2,3-c]chromene derivatives in high yields.
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Affiliation(s)
- Wang Jiang
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Jing Sun
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Ru-Zhang Liu
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- China
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15
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Highly stereoselective [3+2]-cycloaddition reaction of stabilised N , N ′-cyclic azomethine imines with 3-nitro-2-phenyl-2 H -chromenes: Synthesis of tetrahydrochromeno[4,3- c ]pyrazolo[1,2- a ]pyrazol-11-ones. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.09.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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16
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(3+2) Cycloaddition of N-methylazomethine ylide obtained from sarcosine and formaldehyde to CH- and NH-acidic enones and enamides. Chem Heterocycl Compd (N Y) 2017. [DOI: 10.1007/s10593-017-2035-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Jiang W, Sun J, Yan CG. Diastereoselective synthesis of benzo[d]chromeno[3′,4′:3,4]pyrrolo[2,1-b]thiazoles via cycloaddition reaction of benzothiazolium salts with 3-nitrochromenes. RSC Adv 2017. [DOI: 10.1039/c7ra06548e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Diastereospecific synthesis of benzo[d]chromeno[3′,4′:3,4]pyrrolo[2,1-b]thiazoles via cycloaddition reaction of benzothiazolium salts with 3-nitrochromenes.
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Affiliation(s)
- Wang Jiang
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- P. R. China
| | - Jing Sun
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- P. R. China
| | - Chao-Guo Yan
- College of Chemistry & Chemical Engineering
- Yangzhou University
- Yangzhou 225002
- P. R. China
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18
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Chang GH, Wang CY, Madhusudhan Reddy G, Tsai YL, Lin W. Enantioselective Synthesis of Polysubstituted Benzopyrano[3,4-c]pyrrolidine Frameworks via [3 + 2] Cycloaddition of Azomethine Ylides and Coumarin Derivatives. J Org Chem 2016; 81:10071-10080. [PMID: 27668513 DOI: 10.1021/acs.joc.6b02041] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
An enantioselective synthesis of benzopyrano[3,4-c]pyrrolidine derivatives via organocatalyzed [3 + 2] cycloaddition has been achieved. Cinchona alkaloid-derived organocatalysts as Brønsted bases have been examined for this asymmetric cycloaddition of o-hydroxy aromatic aldimines with 3-substituted coumarins. An unexpected rearrangement of the quaternary acyl moiety in the products resulted in an in situ protection of the o-hydroxy group.
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Affiliation(s)
- Geng-Hua Chang
- Department of Chemistry, National Taiwan Normal University , Taipei 11677, Taiwan, R.O.C
| | - Chein-Yi Wang
- Department of Chemistry, National Taiwan Normal University , Taipei 11677, Taiwan, R.O.C
| | - G Madhusudhan Reddy
- Department of Chemistry, National Taiwan Normal University , Taipei 11677, Taiwan, R.O.C
| | - Yi-Ling Tsai
- Department of Chemistry, National Taiwan Normal University , Taipei 11677, Taiwan, R.O.C
| | - Wenwei Lin
- Department of Chemistry, National Taiwan Normal University , Taipei 11677, Taiwan, R.O.C
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19
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Meyer AG, Ryan JH. 1,3-Dipolar Cycloaddition Reactions of Azomethine Ylides with Carbonyl Dipolarophiles Yielding Oxazolidine Derivatives. Molecules 2016; 21:molecules21080935. [PMID: 27455230 PMCID: PMC6274470 DOI: 10.3390/molecules21080935] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 07/02/2016] [Accepted: 07/06/2016] [Indexed: 12/19/2022] Open
Abstract
We provide a comprehensive account of the 1,3-dipolar cycloaddition reactions of azomethine ylides with carbonyl dipolarophiles. Many different azomethine ylides have been studied, including stabilized and non-stabilized ylides. Of the carbonyl dipolarophiles, aldehydes including formaldehyde are the most studied, although there are now examples of cycloadditions with ketones, ketenes and carboxyl systems, in particular isatoic anhydrides and phthalic anhydrides. Intramolecular cycloadditions with esters can also occur under certain circumstances. The oxazolidine cycloadducts undergo a range of reactions triggered by the ring-opening of the oxazolidine ring system.
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Affiliation(s)
- Adam G Meyer
- CSIRO Manufacturing, Bag 10, Clayton South MDC, Victoria 3169, Australia.
| | - John H Ryan
- CSIRO Manufacturing, Bag 10, Clayton South MDC, Victoria 3169, Australia.
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20
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Singh MS, Chowdhury S, Koley S. Progress in 1,3-dipolar cycloadditions in the recent decade: an update to strategic development towards the arsenal of organic synthesis. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.02.031] [Citation(s) in RCA: 142] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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21
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Bakthadoss M, Sivakumar N, Devaraj A. Synthesis of benzoxepinopyrrolidines/spiropyrrolidines via oxa-Pictet–Spengler and [3+2] cycloaddition reactions. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.07.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Sosnovskikh VY, Kornev MY, Moshkin VS, Buev EM. Substituted chromones in [3+2] cycloadditions with nonstabilized azomethine ylides: synthesis of 1-benzopyrano[2,3-c]pyrrolidines and 1-benzopyrano[2,3-c:3,4-c′]dipyrrolidines. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.090] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Korotaev VY, Barkov AY, Matochkina EG, Kodess MI, Sosnovskikh VY. Synthesis of chromeno[3,4-c][1,2]oxazine-N-oxides via formal [4+2] cycloaddition of 3-nitro-2-trihalomethyl-2H-chromenes with cyclohexanone and pinacolone enamines. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.100] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Microwave-assisted facile synthesis of [a]-annelated pyrazolopyrroloindoles via intramolecular azomethine imine 1,3-dipolar cycloaddition. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.03.134] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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25
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Sosnovskikh VY, Kornev MY, Moshkin VS. 3-Cyanochromones in [3+2] cycloadditions with an azomethine ylide derived from sarcosine and formaldehyde. A short synthesis of 1-benzopyrano[2,3-c:3,4-c′]dipyrrolidines. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.10.154] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Korotaev VY, Sosnovskikh VY, Barkov AY. Synthesis and properties of 3-nitro-2H-chromenes. RUSSIAN CHEMICAL REVIEWS 2013. [DOI: 10.1070/rc2013v082n12abeh004370] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Korotaev VY, Barkov AY, Sosnovskikh VY. Domino reaction of 3-nitro-2-(trifluoromethyl)-2H-chromenes with 2-(1-phenylalkylidene)malononitriles: synthesis of functionalized 6-(trifluoromethyl)-6H-dibenzo[b,d]pyrans and a rare case of [1,5] sigmatropic shift of the nitro group. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.09.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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