2022
DOI: 10.1016/j.tetlet.2022.154018
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A zinc-catalyzed synthesis of 3-trifluoromethyl-4-trifluoroacetyl pyrazoles

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Cited by 7 publications
(2 citation statements)
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“…Hong et al developed a zinc-catalyzed cycloaddition of sydnones 211 with 1,3-dicarbonyl compounds 1 for the synthesis of 3-trifluoromethyl-4-trifluoroacetyl pyrazole 212 (Scheme 64). [150] This reaction exhibited a broad substrate scope and tolerated a wide variety of substituted aromatic sydnones as well as diketone substrates. Moreover, in order to demonstrate the synthetic applicability of this method, trifluoroacetyl moiety of 212 was transformed to various carboxylic acid and alcohol products.…”
Section: Pyrazole Derivativesmentioning
confidence: 96%
“…Hong et al developed a zinc-catalyzed cycloaddition of sydnones 211 with 1,3-dicarbonyl compounds 1 for the synthesis of 3-trifluoromethyl-4-trifluoroacetyl pyrazole 212 (Scheme 64). [150] This reaction exhibited a broad substrate scope and tolerated a wide variety of substituted aromatic sydnones as well as diketone substrates. Moreover, in order to demonstrate the synthetic applicability of this method, trifluoroacetyl moiety of 212 was transformed to various carboxylic acid and alcohol products.…”
Section: Pyrazole Derivativesmentioning
confidence: 96%
“…In 2022, Weng and co-workers 36 reported an effective and practical synthesis method for 3-trifluoromethyl-4 trifluoroacetyl pyrazoles using the Zn-catalyzed cycloaddition of sydnones with 1,1,1,5,5,5-hexafluoropentane-2,4-dione (Scheme 19). The approach, with ZnI 2 /bpy as a catalyst in THF, generated a range of 3-trifluoromethyl-4 trifluoroacetyl pyrazoles with high yields.…”
Section: 22-trifluoroacetyl Derivativesmentioning
confidence: 99%