Synthesis of 5-hydroxy-3-trifluoromethyl-pyrazoles By Ring-opening of 3-trifluoroacetyl-benzolactams
(1994) Societes Chimiques Belges. Bulletin — Vol. 103, n° 11, p. 655-664 (1994)
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- Abstract
- New trifluoromethylated pyrazoles 5b,c,f have been prepared by condensation of 3-trifluoroacetyl benzolactams 1a,b,c and 2 with hydrazines by opening of the lactam moiety. The structure of pyrazoles was established by X-ray diffraction analysis and by comparison of C-13-NMR data. The geometry of intermediate hydrazones 3c-e and their cyclisations were also investigated.
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Bouillon, JP., Declercq, J.-P., Janousek, Z., Viehe, HG., & Tinant, B. (1994). Synthesis of 5-hydroxy-3-trifluoromethyl-pyrazoles By Ring-opening of 3-trifluoroacetyl-benzolactams. Societes Chimiques Belges. Bulletin, 103(11), 655-664. https://doi.org/10.1002/bscb.19941031106 (Original work published 1994)