Reduction of 1,4-Di-(2-hydroxy-3,4,6-trimethylphenyl)-butane-1,4-dione: The Two Stereoisomeric Diols 1,2
✍ Scribed by Smith, Lee Irvin; Holmes, Richard Remsen
- Book ID
- 127050977
- Publisher
- American Chemical Society
- Year
- 1951
- Tongue
- English
- Weight
- 426 KB
- Volume
- 73
- Category
- Article
- ISSN
- 0002-7863
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## Abstract For Abstract see ChemInform Abstract in Full Text.
The title compound, C 19 H 14 F 3 N 3 O 3 S, is built up from pyrazolinone, thiophene, phenyl rings and tri¯uoropropanedicarbonyl moieties. Examination of the ÐC N and ÐC O bond lengths reveals that there is no electron delocalization over the molecule.
Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.003 A Ê R factor = 0.042 wR factor = 0.120 Data-to-parameter ratio = 15.8 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
In the crystals of the title compound, C 19 H 24 O 8 , the molecules adopt a conformation in which the bulky 2,6-dimethoxyphenoxy and 4-hydroxy-3,5-dimethoxyphenyl groups are distant from each other. The O(phenoxy)ÐCÐCÐC(phenyl) torsion angle between these groups is À177.27 (10) . The conformation i