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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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