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Jia F, Sang T, He J, Liu Y, Liu J, Ma X, Liu P. K2S2O8-promoted C3-thiocyanation of pyrazole [1,5-a] pyrimidine-7-amines. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Abstract
Pyrazolo[1,5-a]pyrimidines are fused N-heterocyclic systems of a pyrazole. They are considered as a key structural motif in many vital applications, such as medicinal, pharmaceuticals, pesticides, dyes and pigments. Their synthetic routes have escalated dramatically in the last decades. The current review is a recent synthetic survey of pyrazolo[ 1,5-a]pyrimidines and their applications until recently.
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Affiliation(s)
- Amal Al-Azmi
- Chemistry Department, Kuwait University, P. O. Box 5969, Safat 13060, Kuwait
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Ubeid MT, Thabet HK, El-Feky SA. An efficient, one-pot three-component synthesis of 4H-thiazolo[3,2-a][1,3,5]triazin-6-one derivatives. HETEROCYCL COMMUN 2016. [DOI: 10.1515/hc-2015-0135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractA simple and efficient protocol was established to synthesize thiazolo[3,2-a][1,3,5]triazin-6-ones via three-component one-pot condensation reaction of readily available thioglycolic acid or ethyl thioglycolate, aldehydes or ketones and dicyandiamide in the presence of ammonium acetate. All of the newly synthesized compounds were characterized by spectroscopic analyses.
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Affiliation(s)
- Mustafa T. Ubeid
- 1Faculty of Arts and Science, Department of Chemistry, Northern Border University, Rafha, 91911, P.O. 840, Saudi Arabia
| | - Hamdy K. Thabet
- 1Faculty of Arts and Science, Department of Chemistry, Northern Border University, Rafha, 91911, P.O. 840, Saudi Arabia
- 2Faculty of Science, Department of Chemistry, Al-Azhar University, 11284, Nasr City, Cairo, Egypt
| | - Said A. El-Feky
- 3Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Northern Border University, Rafha, 91911, P.O. 840, Saudi Arabia
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Thabet HK, Ubeid MT, El-Feky SA. Synthesis of Novel 4-Thiazolidinones Linked by an Aryl Spacer to a 1,2,4-Triazine Moiety. JOURNAL OF CHEMICAL RESEARCH 2015. [DOI: 10.3184/174751915x14412838239915] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of potentially biologically active hydrazones, Schiff's base and hybrid thiazolidine-triazine derivatives have been prepared from 4-[(5,6-diphenyl-1,2,4-triazin-3-yl)thio]-benzaldehyde. The latter was prepared by reacting 5,6-diphenyl-1,2,4-triazine-3(2H)-thione with 4-fluorobenzaldehyde. The derivatives were then prepared by condensation of the aldehyde with hydrazines, aniline and various thiazolidin-4-ones. Their structures were established by C,H,N analyses, IR and NMR spectra.
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Affiliation(s)
- Hamdy Khamees Thabet
- Department of Chemistry, Faculty of Arts and Science, Northern Border University, Rafha, 91911, PO 840, Saudi Arabia
- Department of Chemistry, Faculty of Science, Al-Azhar University, 11284, Nasr City, Cairo, Egypt
| | - Mustafa Turki Ubeid
- Department of Chemistry, Faculty of Arts and Science, Northern Border University, Rafha, 91911, PO 840, Saudi Arabia
| | - Said Ahmed El-Feky
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Northern Border University, Rafha, 91911, PO 840, Saudi Arabia
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