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Osipov DV, Korzhenko KS, Osyanin VA, Krasnikov PE, Klimochkin YN. [3+3] Cyclocondensation of β-carbonyl-substituted 1H-benzo[f]chromenes with 3-amino-1,2,4-triazoles: synthesis of [1,2,4]triazolo[1,5-a]pyrimidines. Chem Heterocycl Compd (N Y) 2022. [DOI: 10.1007/s10593-022-03129-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Stefanello FS, Kappenberg YG, Araújo JN, Franceschini SZ, Martins MA, Zanatta N, Iglesias BA, Bonacorso HG. Trifluoromethyl-substituted aryldiazenyl-pyrazolo[1,5-a]pyrimidin-2-amines: Regioselective synthesis, structure, and optical properties. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.109967] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Abstract
This review describes the non-exhaustive scenery of the synthesis of various
biologically interesting pyrimidine annulated five-membered heterocyclic ring systems
that have been appeared in the literature during the last two decades. During this period,
different synthetic routes and various methodologies have been developed for the functionalization
of pyrimidine ring towards the construction of five-membered heterocyclic
rings. The aim of this review is to give an overview of the assorted methodologies that
have been reported about the chemistry of construction of pyrimidines annulated nitrogen,
oxygen and sulphur containing five-membered heterocycles.
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Affiliation(s)
- Pradip Kumar Maji
- Department of Chemistry, Bidhan Chandra College, Asansol, Paschim Bardhaman, 713304, Rishra, West Bangal, India
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Rulev AY, Romanov AR. Unsaturated polyfluoroalkyl ketones in the synthesis of nitrogen-bearing heterocycles. RSC Adv 2016. [DOI: 10.1039/c5ra23759a] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
This review focuses on the recent achievements and new developments in the synthesis of polyfluorinated aza-heterocycles based on fluorine-bearing enones and ynones published in the last decade.
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Affiliation(s)
- A. Yu. Rulev
- A. E. Favorsky Institute of Chemistry
- Siberian Division of the Russian Academy of Sciences
- Irkutsk 664033
- Russia
| | - A. R. Romanov
- A. E. Favorsky Institute of Chemistry
- Siberian Division of the Russian Academy of Sciences
- Irkutsk 664033
- Russia
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A one-pot, three-component, microwave-assisted synthesis of novel 7-amino-substituted 4-aminopyrazolo[1,5-a][1,3,5]triazine-8-carbonitriles. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.11.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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8
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Frizzo CP, Scapin E, Marzari MRB, München TS, Zanatta N, Bonacorso HG, Buriol L, Martins MAP. Ultrasound irradiation promotes the synthesis of new 1,2,4-triazolo[1,5-a]pyrimidine. ULTRASONICS SONOCHEMISTRY 2014; 21:958-62. [PMID: 24394386 DOI: 10.1016/j.ultsonch.2013.12.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Revised: 11/28/2013] [Accepted: 12/11/2013] [Indexed: 05/14/2023]
Abstract
Ultrasonic irradiation was used in the synthesis of a series of novel 1,2,4-triazolo[1,5-a]pyrimidines. The products were synthetized from the cyclocondensation reaction of 1,1,1-trifluoro-4-metoxy-3-alken-2-one [CF3C(O)CHC(R)OMe, where R=Ph, 4-F-C6H4, 4-Br-C6H4, 4-I-C6H4, 4-CH3-C6H4, 4-CH3O-C6H4, Thien-2-yl, Biphen-4-yl] or β-enaminones [RC(O)CHCHNMe2, where R=Ph, 4-F-C6H4, 4-Br-C6H4, 4-I-C6H4, 4-CH3-C6H4, 4-CH3O-C6H4, 4-NO2-C6H4, Thien-2-yl, Biphen-4-yl, Naphth-2-yl, Pyrrol-2-yl, CCl3] with 5-amino-1,2,4-triazole in acetic acid at 99°C with 5-17 min of ultrasound irradiation. This methodology has shown several advantages, such as shorter reaction times, mild conditions, high regioselectivity, and excellent yields, when compared with conventional thermal heating (oil bath).
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Affiliation(s)
- Clarissa P Frizzo
- Núcleo de Química de Heterociclos, Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Elisandra Scapin
- Núcleo de Química de Heterociclos, Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Mara R B Marzari
- Núcleo de Química de Heterociclos, Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Taiana S München
- Núcleo de Química de Heterociclos, Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Nilo Zanatta
- Núcleo de Química de Heterociclos, Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Helio G Bonacorso
- Núcleo de Química de Heterociclos, Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Lilian Buriol
- Núcleo de Química de Heterociclos, Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
| | - Marcos A P Martins
- Núcleo de Química de Heterociclos, Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
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Kawase M, Saijo R, Watanabe G, Kurihara KI. Fluorinated β-Diketo Phosphorus Ylides: Their Cyclocondensation with Amidines Affording 4-Trifluoromethyl- and 4-Perfluoroalkyl-Substituted Pyrimidines. HETEROCYCLES 2014. [DOI: 10.3987/com-14-13075] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Emelina EE, Petrov AA, Selivanov SI, Nelyubina YV, Antipin MY. Highly regioselective synthesis of trifluoromethyl derivatives of pyrazolo[1,5-a]pyrimidines bearing fused cycloalkane rings using (2-ethoxycycloalkenyl)-2,2,2-trifluoroethanones. J Fluor Chem 2009. [DOI: 10.1016/j.jfluchem.2009.06.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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