Dissociation of ionized keto-enol tautomers of some 1,3-dicarbonyl compounds
β Scribed by Seiji Tobita; Susumu Tajima; Shinzo Suzuki; Takashi Imamura; Inosuke Koyano
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 943 KB
- Volume
- 105
- Category
- Article
- ISSN
- 0168-1176
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Molecular structures of the two tautomers of a β€-diketone 1-phenyl-3-methyl-4-benzoyl-5pyrazolone (PMBP) were studied by MS, UV, IR, and X-ray diffraction methods. The mass spectra show little difference for the two forms of PMBP, while there are notable differences in the IR spectra as KBr pellets
The enol content and equilibrium free energies for the keto-enol tautomerism have been determined for a series of 1,3-diketones, at 40 OC, in deuterochloroform and dimethylsulfoxide-d (DMSO), by lH n.m.r.. Compounds containing methyl, phenyl, t-butyl, E-thienyl, trifluorome t hyl and ethoxy groups h