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1 article(s) from Dongxu, Zhang

Trifluoromethylated hydrazones and acylhydrazones as potent nitrogen-containing fluorinated building blocks

Zhang Dongxu

Beilstein J. Org. Chem. 2023, 19, 1741–1754, doi:10.3762/bjoc.19.127

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Graphical Abstract

Scheme 1: Synthesis of trifluoromethylpyrazoles from trifluoroacetaldehyde hydrazones.

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Scheme 2: Synthesis of polysubstituted pyrazolidines and pyrazolines.

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Scheme 3: Asymmetric synthesis of 3-trifluoromethyl-1,4-dihydropyridazines reported by Rueping et al. [39].

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Scheme 4: Synthesis of 3-trifluoromethyl-1,4-dihydropyridazine with Brønsted acid-assisted Lewis base catalys...

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Scheme 5: Synthesis of CF₃-pyrazoles and CF₃-1,6-dihydropyridazines.

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Scheme 6: Asymmetric reactions of trifluoromethylimines with organometallic reagents.

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Scheme 7: Mannich-type reaction of trifluoroacetaldehyde hydrazones.

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Scheme 8: Synthesis of trifluoromethylated hydrazonoyl halides.

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Scheme 9: Early work of trifluoromethylated hydrazonoyl halides.

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Scheme 10: [3 + 2]/[3 + 3] Cycloadditions of trifluoromethylated hydrazonoyl halides.

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Scheme 11: Substrate scope for [3 + 2] cycloadditions with trifluoroacetonitrile imines reported by Jasiński’s...

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Scheme 12: Synthesis of trifluoromethylated 1,2,4-triazole and 1,2,4-triazine derivatives.

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Scheme 13: [3 + 2] Cycloadditions of difluoromethylated hydrazonoyl halides.

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Scheme 14: Preparation and early applications of trifluoromethylated acylhydrazones.

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Scheme 15: 1,2-Nucleophilic addition reactions of trifluoromethylated acylhydrazones.

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Scheme 16: Cascade oxidation/cyclization reactions of trifluoromethylated homoallylic acylhydrazines.

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Scheme 17: Synthesis of trifluoromethylated cyanohydrazines and 3-trifluoromethyl-1,2,4-triazolines.

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Scheme 18: N-Arylation and N-alkylation of trifluoromethyl acylhydrazones.

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Scheme 19: [3 + 2]-Cycladditions of trifluoromethyl acylhydrazones.

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Review

Published 15 Nov 2023

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