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Osipov DV, Demidov MR, Artemenko AA, Rashchepkina DA, Krasnikov PE, Osyanin VA. Cascade Synthesis of Pyrrolo[1,2- a]quinolines and Pyrrolo[2,1- a]isoquinolines via Formal [3 + 2]-Cycloaddition of Push-Pull Nitro Heterocycles with Carbonyl-Stabilized Quinolinium/Isoquinolinium Ylides. J Org Chem 2024; 89:9816-9829. [PMID: 38917339 DOI: 10.1021/acs.joc.4c00455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Various substituted pyrrolo[1,2-a]quinolines and pyrrolo[2,1-a]isoquinolines were synthesized in good to high yields by the Et3N-mediated reaction of push-pull 3-nitrobenzofurans or 1-Ts-/1-Ms-3-nitroindoles and precursors of carbonyl-stabilized quinolinium and isoquinolinium ylides as 1,3-dipole equivalents. These transformations proceed in a one-pot manner starting with the formal [3 + 2]-cycloaddition stage, which is accompanied by double dearomatization of both quinoline/isoquinoline and benzofuran/indole moieties, followed by ring-opening of cyclic intermediate formed and nitrous acid elimination sequence. [3 + 2]-Cycloadducts were isolated as the final products in cases of impossibility or difficulty of their enolization. The present protocol was successfully extended to 3-nitro-4H-chromene derivatives as push-pull dipolarophile component. Finally, using the method of competing reactions, the reactivity of the starting compounds was compared with each other.
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Affiliation(s)
- Dmitry V Osipov
- Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russian Federation
| | - Maxim R Demidov
- Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russian Federation
| | - Alina A Artemenko
- Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russian Federation
| | - Daria A Rashchepkina
- Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russian Federation
| | - Pavel E Krasnikov
- Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russian Federation
| | - Vitaly A Osyanin
- Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russian Federation
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Korzhenko KS, Yushkova AS, Osipov DV, Rashchepkina DA, Demidov OP, Osyanin VA. Divergent Transformations of 2-Nitro-1 H-benzo[ f]chromenes in Reactions with Alkylidenemalononitriles: Access to Naphtho[2,1- b]furans via Base-Mediated Pyran Ring Contraction. Org Lett 2024; 26:1310-1315. [PMID: 38329453 DOI: 10.1021/acs.orglett.3c03879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
The action of 2-(1-arylethylidene)malononitriles on 2-nitro-1H-benzo[f]chromenes in the presence of Et3N and MoO3·2H2O results in naphtho[2,1-b]furans containing an allylidenemalononitrile unit in the α-position. The reaction proceeds with contraction of the pyran ring via a cascade carba-Michael addition/retro-oxa-Michael reaction/tautomerization/SN2/oxidation process. In contrast, the reaction of 2-nitro-1H-benzo[f]chromenes with the cyclic Knoevenagel adduct derived from 1-indanone and malononitrile leads to dihydroindeno[1,2-c]xanthenes. The possibility of further transformations of naphtho[2,1-b]furan derivatives as useful precursors and their optical properties were also investigated.
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Affiliation(s)
- Kirill S Korzhenko
- Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia
| | - Anastasiya S Yushkova
- Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia
| | - Dmitry V Osipov
- Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia
| | - Daria A Rashchepkina
- Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia
| | - Oleg P Demidov
- North Caucasian Federal University, 1 Pushkina St., Stavropol 355009, Russia
| | - Vitaly A Osyanin
- Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia
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Semenova IА, Osyanin VА, Demidov OP, Osipov DV. Opening of the Furan Ring of 3-Nitrobenzofurans by the Action of Carbonyl-Stabilized Sulfonium ylides. Chem Heterocycl Compd (N Y) 2022. [DOI: 10.1007/s10593-022-03079-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Osipov DV, Korzhenko KS, Rashchepkina DA, Artemenko AA, Demidov OP, Shiryaev VA, Osyanin VA. Catalyst-free formal [3 + 2] cycloaddition of stabilized N, N-cyclic azomethine imines to 3-nitrobenzofurans and 3-nitro-4 H-chromenes: access to heteroannulated pyrazolo[1,2- a]pyrazoles. Org Biomol Chem 2021; 19:10156-10168. [PMID: 34778893 DOI: 10.1039/d1ob01377g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We have studied the [3 + 2]-cycloaddition of various N,N-cyclic azomethine imines to 3-nitrobenzofurans. This process is a rare example of their dearomatization. We have also extended this process to the related 3-nitro-4H-chromenes as dipolarophiles. Both reactions provide access to benzofuro- and chromeno-condensed pyrazolo[1,2-a]pyrazoles with 100% atom economy in a diastereoselective manner under mild eco-friendly conditions. Finally, on the basis of DFT calculations, the mechanistic insights into the mentioned [3 + 2]-cycloadditions and explanations of the experimentally determined limitations of the method are given. Hirshfeld atomic charge values of push-pull heterocycles were suggested as a criterion for a priori assessment of the possibility of their dipolar cycloaddition with N,N-cyclic azomethine imines.
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Affiliation(s)
- Dmitry V Osipov
- Department of Organic Chemistry, Chemical Technological Faculty, Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia.
| | - Kirill S Korzhenko
- Department of Organic Chemistry, Chemical Technological Faculty, Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia.
| | - Daria A Rashchepkina
- Department of Organic Chemistry, Chemical Technological Faculty, Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia.
| | - Alina A Artemenko
- Department of Organic Chemistry, Chemical Technological Faculty, Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia.
| | - Oleg P Demidov
- Department of Chemistry, North Caucasus Federal University, 1 Pushkin St., Stavropol 355009, Russia
| | - Vadim A Shiryaev
- Department of Organic Chemistry, Chemical Technological Faculty, Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia.
| | - Vitaly A Osyanin
- Department of Organic Chemistry, Chemical Technological Faculty, Samara State Technical University, 244 Molodogvardeyskaya St., Samara 443100, Russia.
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