THERMAL REARRANGEMENT OF CONDENSED ALKOXY-SUBSTITUTED 2-TRIFLUOROMETHYL-4H-PYRAN-4-ONES TO SPIROANNELATED 3(2H)-FURANONES
DOI:
https://doi.org/10.1007/281Keywords:
acyloxy group, 2, 3-dihydro-4H-pyran-4-ones, spiro compounds, 3(2H)-furanones, X-ray crystallographic analysis, thermal rearrangementAbstract
Isomerization of the acetates and benzoates of condensed hydroxy-substituted 2-trifluoromethyl-4H-pyran-4-ones at 300-320 ºC gave the corresponding derivatives of spiroannelated 3(2H)-furanones. Their structure was confirmed by spectral data and by X-ray crystallographic analysis.
Authors: D. N. Bobrov, A. S. Lyakhov, A. A. Govorova, and V. I. Tyvorskii.
English Translation in Chemistry of Heterocyclic Compounds, 2000, 36 (8), pp 899-904