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Ivanova EE, Shabalin DA, Ushakov IA, Vashchenko AV, Schmidt EY, Trofimov BA. Diastereoselective synthesis of tetrahydropyrrolo[1,2- d]oxadiazoles from functionalized Δ 1-pyrrolines and in situ generated nitrile oxides. Org Biomol Chem 2023; 21:1725-1736. [PMID: 36723150 DOI: 10.1039/d2ob02230c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Tetrahydropyrrolo[1,2-d]oxadiazoles have been synthesized in good-to-excellent yields via the cycloaddition of nitrile oxides (in situ generated from aldoximes) to readily accessible functionalized Δ1-pyrrolines. The reaction proceeds smoothly at room temperature in a two-phase system in the presence of sodium hypochloride as an oxidant to diastereoselectively afford pharmaceutically prospective 1,2,4-oxadiazolines fused with a five-membered ring. The reaction tolerates a broad range of substrates, including those with oxidant-sensitive functional groups and competitive reaction sites.
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Affiliation(s)
- Evgeniya E Ivanova
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St., Irkutsk, 664033, Russian Federation.
| | - Dmitrii A Shabalin
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St., Irkutsk, 664033, Russian Federation.
| | - Igor' A Ushakov
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St., Irkutsk, 664033, Russian Federation.
| | - Alexander V Vashchenko
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St., Irkutsk, 664033, Russian Federation.
| | - Elena Yu Schmidt
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St., Irkutsk, 664033, Russian Federation.
| | - Boris A Trofimov
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St., Irkutsk, 664033, Russian Federation.
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Borisova MA, Ryabukhin DS, Ivanov AY, Boyarskaya IA, Shabalin DA, Zelenkov LE, Sсhmidt EY, Trofimov BA, Vasilyev AV. Transformations of 5‐Hydroxy‐1‐pyrrolines in Strong Brønsted Acids: Experimental and Theoretical Study of Intermediate Cationic Species. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marina A Borisova
- Saint Petersburg State Forest Engineering University named after S M Kirov: Sankt-Peterburgskij gosudarstvennyj lesotehniceskij universitet imeni S M Kirova chemistry RUSSIAN FEDERATION
| | - Dmitry S. Ryabukhin
- Saint Petersburg State Forest Technical University named after S M Kirov: Sankt-Peterburgskij gosudarstvennyj lesotehniceskij universitet imeni S M Kirova chemistry RUSSIAN FEDERATION
| | - Alexander Yu. Ivanov
- Saint Petersburg State University: Sankt-peterburgskij gosudarstvennyj universitet organic chemstry RUSSIAN FEDERATION
| | - Irina A. Boyarskaya
- Saint Petersburg State University: Sankt-peterburgskij gosudarstvennyj universitet organic chemstry RUSSIAN FEDERATION
| | - Dmitrii A. Shabalin
- AE Favorsky Irkutsk Institute of Chemistry SB RAS: Irkutskij institut himii imeni A E Favorskogo SO RAN chemistry RUSSIAN FEDERATION
| | - Lev E. Zelenkov
- ITMO University: Nacional'nyj issledovatel'skij universitet ITMO school of physics and engineering RUSSIAN FEDERATION
| | - Elena Yu. Sсhmidt
- AE Favorsky Irkutsk Institute of Chemistry SB RAS: Irkutskij institut himii imeni A E Favorskogo SO RAN chemistry RUSSIAN FEDERATION
| | - Boris A. Trofimov
- AE Favorsky Irkutsk Institute of Chemistry SB RAS: Irkutskij institut himii imeni A E Favorskogo SO RAN chemistry RUSSIAN FEDERATION
| | - Aleksander Viktorovich Vasilyev
- Saint-Petersburg State Forest Technical University Department of Organic Chemistry Institutsky per. 5 194021 Saint-petersburg RUSSIAN FEDERATION
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Shabalin DA, Kazak MK, Ushakov IA, Vashchenko AV, Schmidt EY. Synthesis of Pyrrolo[2,1- a]isoquinolinium Salts from 1-Pyrrolines and Alkynes via Rhodium-Catalyzed C-H Functionalization/N-Annulation Tandem Reaction. J Org Chem 2022; 87:6860-6869. [PMID: 35507755 DOI: 10.1021/acs.joc.2c00555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A convenient synthesis of pyrrolo[2,1-a]isoquinolinium salts from 1-pyrrolines and alkynes through rhodium-catalyzed C-H functionalization/N-annulation tandem reaction is described. The protocol features a good substrate tolerance, mild reaction conditions, and high yields of target products. Exploration of the alkyne scope unexpectedly revealed a novel labile functional group-promoted rhodium-catalyzed C-H functionalization/C-annulation/elimination cascade reaction of 1-pyrrolines with electron-deficient alkynes.
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Affiliation(s)
- Dmitrii A Shabalin
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St, Irkutsk, 664033, Russian Federation
| | - Maxim K Kazak
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St, Irkutsk, 664033, Russian Federation
| | - Igor' A Ushakov
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St, Irkutsk, 664033, Russian Federation
| | - Alexander V Vashchenko
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St, Irkutsk, 664033, Russian Federation
| | - Elena Yu Schmidt
- A.E. Favorsky Irkutsk Institute of Chemistry SB RAS, 1 Favorsky St, Irkutsk, 664033, Russian Federation
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Trofimov BA, Oparina LA, Mal’kina AG, Kolyvanov NA, Ushakov IA, Saliy IV, Apartsin KA. δ-Keto Aminoacrylonitriles and δ-Keto Aminoenones from 1-Pyrrolines, Cyanoacetylenes, and Acetylenic Ketones. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1742-2736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractThe ring-opening/functionalization of 1-pyrrolines by cyanoacetylenes or acetylenic ketones (20–80 °C, MeCN, H2O) affords δ-keto aminoacrylonitriles and δ-keto aminoenones, mostly as the Z-isomers, in up to 85% yields. The synthesis involves C(2)–N bond cleavage in the intermediate hemiaminal resulting from the intermediate 1,3(4)-dipolar 1-pyrroline/acetylene complexes and water.
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Affiliation(s)
- Boris A. Trofimov
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
| | - Ludmila A. Oparina
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
| | - Anastasiya G. Mal’kina
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
| | - Nikita A. Kolyvanov
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
| | - Igor A. Ushakov
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
| | - Ivan V. Saliy
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
| | - Konstantin A. Apartsin
- Biomedical Research and Technology Department of the Irkutsk Scientific Center, Siberian Branch, Russian Academy of Sciences
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Trofimov BA, Mal’kina AG. Cyanoacetylenic Alcohols: Molecules of Interstellar Relevance in the Synthesis of Essential Heterocycles, Amino Acids, Nucleobases and Nucleosides. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1493-6840] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractCyanoacetylenic alcohols, R1R2C(OH)C≡C–CN, the closest derivatives of cyanoacetylene, an abundant interstellar molecule, are now becoming important compounds in the area of modern organic synthesis that tends to mimic Nature. The presence of highly reactive C≡C and C≡N bonds in close proximity to a hydroxy group endows cyanoacetylenic alcohols with a chemical trinity of mutually influencing functions, leading to a myriad number of chemical transformations. All reactions of cyanoacetylenic alcohols parallel modern organic synthesis, whilst being biomimetic. To react, they do not need transition metals (and in most cases, no metals at all, except for physiologically indispensable Na+ and K+), proceed at ambient temperature and often in aqueous media. Fundamentally, their reactions are 100% atom-economic because they are almost exclusively addition processes. Typically, the cyano, acetylene and hydroxy functions of cyanoacetylenic alcohols behave as an inseparable entity, leading to reaction products with multiple functional groups. This allows hydroxy, carbonyl, carboxylic, imino, amino, amido, cyanoamido, cyano, various P-containing, ether and ester functions, along with double bonds, different fundamental heterocycles (furans, furanones, pyrazoles, oxazoles, pyridines, pyrimidines, purines, etc.) and diverse polycyclic systems to be integrated in a single molecular architecture. This review focuses on an analysis and generalization of the knowledge that has accumulated on the chemistry of cyanoacetylenic alcohols, mostly over the past 15 years.1 Introduction2 Nucleophilic Addition to Cyanoacetylenic Alcohols and Subsequent Transformations of the Adducts3 Annulation with Nonaromatic Nitrogen Heterocycles4 Annulation with Aromatic Nitrogen Heterocycles5 Modification of Amino Acids6 Modifications of Nucleobases7 Modification of Nucleosides8 Conclusion
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