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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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Kharitonov VB, Sergeeva ES, Kouame EK, Nelyubina YV, Ushakov IA, Loginov DA, Lvov AG. Redirecting of Charge Transfer Enables the Control of the Photoactivity of Terarylenes. Org Lett 2022; 24:7538-7543. [PMID: 36218225 DOI: 10.1021/acs.orglett.2c02825] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Photoinduced charge transfer affects the efficiency and selectivity of photochemical reactions. Incorporation of donating groups into the isoquinolinium core allowed us to overcome the photochemical inactivity of the corresponding dithienyl-substituted terarylenes, presumably by redirecting the charge transfer within the molecule, and gave access to a new family of thermally reversible photoswitches.
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Affiliation(s)
- Vladimir B Kharitonov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova Street, Moscow 119991, Russia
| | - Ekaterina S Sergeeva
- Irkutsk National Research Technical University, 83, Lermontov Street, Irkutsk 664074, Russia.,A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Street, Irkutsk 664033, Russia
| | - Eric Koffi Kouame
- Irkutsk National Research Technical University, 83, Lermontov Street, Irkutsk 664074, Russia.,A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Street, Irkutsk 664033, Russia
| | - Yulia V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova Street, Moscow 119991, Russia
| | - Igor A Ushakov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Street, Irkutsk 664033, Russia
| | - Dmitry A Loginov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova Street, Moscow 119991, Russia.,Plekhanov Russian University of Economics, Stremyannyi Pereulok 36, Moscow 117997, Russia
| | - Andrey G Lvov
- Irkutsk National Research Technical University, 83, Lermontov Street, Irkutsk 664074, Russia.,A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Street, Irkutsk 664033, Russia
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