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Shurupova OV, Tarasova ES, Rzhevskiy SA, Minaeva LI, Topchiy MA, Asachenko AF. Novel convenient 2-step synthesis of pyrido[1,2- a]indoles from pyrylium salts and o-bromoanilines. Org Biomol Chem 2024; 22:6742-6747. [PMID: 39105369 DOI: 10.1039/d4ob00994k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
A novel convenient 2-step synthesis of substituted pyrido[1,2-a]indoles is developed starting from easily available pyrylium tetrafluoroborates and ortho-bromoanilines. A conversion of the pyrylium tetrafluoroborates to pyridinium ones followed by their palladium catalyzed intramolecular cyclization allows the formation of 24 examples of N-fused heterocycles. A one-pot two-stage cyclization procedure was developed. The utility of the methodology was demonstrated with the synthesis of new pyrido[1,2-a]indoles bearing different alkyl, aryl, chlorine, fluorine and methoxy substituents.
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Affiliation(s)
- Olga V Shurupova
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, Moscow, 119991, Russia.
| | - Ekaterina S Tarasova
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, Moscow, 119991, Russia.
| | - Sergey A Rzhevskiy
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, Moscow, 119991, Russia.
| | - Lidiya I Minaeva
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, Moscow, 119991, Russia.
| | - Maxim A Topchiy
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, Moscow, 119991, Russia.
| | - Andrey F Asachenko
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, Moscow, 119991, Russia.
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Sravya G, Khasanov AF, Krinochkin AP, Kopchuk DS, Slepukhin PA, Rahman M, Padmavathi V, Zyryanov GV, Rusinov VL, Chupakhin ON. Aryne-Mediated Transformations of 3-(α- or γ-R-2-pyridyl)-1,2,4-Triazines: Id Diels-Alder Reaction vs Domino Transformation. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2021.1962371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Gundala Sravya
- Ural Federal University, Ekaterinburg, Russian Federation
| | - Albert F. Khasanov
- Ural Federal University, Ekaterinburg, Russian Federation
- Postovsky Institute of Organic Synthesis of RAS (Ural Branch), Ekaterinburg, Russian Federation
| | - Alexey P. Krinochkin
- Ural Federal University, Ekaterinburg, Russian Federation
- Postovsky Institute of Organic Synthesis of RAS (Ural Branch), Ekaterinburg, Russian Federation
| | - Dmitry S. Kopchuk
- Ural Federal University, Ekaterinburg, Russian Federation
- Postovsky Institute of Organic Synthesis of RAS (Ural Branch), Ekaterinburg, Russian Federation
| | - Pavel A. Slepukhin
- Ural Federal University, Ekaterinburg, Russian Federation
- Postovsky Institute of Organic Synthesis of RAS (Ural Branch), Ekaterinburg, Russian Federation
| | - Matiur Rahman
- Ural Federal University, Ekaterinburg, Russian Federation
| | | | - Grigory V. Zyryanov
- Ural Federal University, Ekaterinburg, Russian Federation
- Postovsky Institute of Organic Synthesis of RAS (Ural Branch), Ekaterinburg, Russian Federation
| | - Vladimir L. Rusinov
- Ural Federal University, Ekaterinburg, Russian Federation
- Postovsky Institute of Organic Synthesis of RAS (Ural Branch), Ekaterinburg, Russian Federation
| | - Oleg N. Chupakhin
- Ural Federal University, Ekaterinburg, Russian Federation
- Postovsky Institute of Organic Synthesis of RAS (Ural Branch), Ekaterinburg, Russian Federation
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3
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Zhong Q, Wang Y, Lan H, Zhu H, Fan Q. Construction of 3,12-Diazatetracyclododecane-dienes through Unexpected Visible-Light-Induced Radical Cascade Cyclization. J Org Chem 2022; 87:10937-10946. [PMID: 35921484 DOI: 10.1021/acs.joc.2c01225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel visible-light-induced cascade radical cyclization reaction of 3-cyano-4-aryl-1,4-dihydropyridines for the construction of 3,12-diazatetracyclododecane-diene derivatives is reported for the first time. In the presence of 410 nm blue LED lamp as the light source and ethanol as the solvent, the reactions proceed smoothly to afford photocyclization products in good yields. The process is carried out through the breaking of original C═C double bonds and the formation of three new single bonds in one pot and proved to be able to tolerate different substituents.
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Affiliation(s)
- Qidi Zhong
- School of Pharmacy, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Yinxin Wang
- School of Pharmacy, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Hanyang Lan
- School of Pharmacy, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Hao Zhu
- School of Public Health, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Qiangwen Fan
- School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang 330013, China
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Kim S, Lee JH, Yoon SH, Kim I. A regioselective [4 + 2] annulation approach to 5-acylindolizine-7-carbonitriles: generation of poly-substituted pyridines. Org Biomol Chem 2021; 19:5806-5817. [PMID: 34113946 DOI: 10.1039/d1ob00788b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of β-ketonitrile and N-substituted pyrrole-2-carboxaldehyde in the presence of piperidinium acetate in CH3CN permitted regioselective access to 5-acylindolizine-7-carbonitrile through a domino Knoevenagel condensation-intramolecular aldol cyclization sequence. A wide range of new indolizine derivatives with a poly-functionalized pyridine moiety were readily synthesized in an atom-economical fashion, thereby expanding the indolizine chemical space for further applications.
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Affiliation(s)
- Sunmi Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
| | - Jeong Hwa Lee
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
| | - Seok Hyun Yoon
- Graduate Program of Industrial Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
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5
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Yao Y, Alami M, Hamze A, Provot O. Recent advances in the synthesis of pyrido[1,2-a]indoles. Org Biomol Chem 2021; 19:3509-3526. [DOI: 10.1039/d1ob00153a] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review deals with the different accesses leading to the pyrido[1,2-a]indole nucleus in the last 20 years.
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Affiliation(s)
- Yunxin Yao
- Université Paris-Saclay
- CNRS
- BioCIS
- 92290 Châtenay-Malabry
- France
| | - Mouad Alami
- Université Paris-Saclay
- CNRS
- BioCIS
- 92290 Châtenay-Malabry
- France
| | - Abdallah Hamze
- Université Paris-Saclay
- CNRS
- BioCIS
- 92290 Châtenay-Malabry
- France
| | - Olivier Provot
- Université Paris-Saclay
- CNRS
- BioCIS
- 92290 Châtenay-Malabry
- France
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Saha S, Maji MS. One-pot access to tetrahydrobenzo[c]carbazoles from simple ketones by using O2 as an oxidant. Org Biomol Chem 2020; 18:1765-1768. [DOI: 10.1039/c9ob02751c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An effective and operationally simple one-pot Brønsted acid catalyzed cascade method is demonstrated for the synthesis of diversely functionalized carbazole frameworks starting from protecting group free 2-alkenyl indoles.
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Affiliation(s)
- Shuvendu Saha
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Modhu Sudan Maji
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
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