Abstract
1. The electronic influence of the ferrocenyl and cyclopentadienylmanganesetricarbonyl radicals upon the mobility of the hydrogen atoms of the methyl groups in methyl ketones was investigated. 2. Kinetic investigations of the isotopic exchange of the hydrogen of the methyl groups of methyl ketones in alkaline catalysis indicated that the electron-donor properties of the ferrocenyl radical exceed the electron-donor properties of the phenyl radical by more than 40-fold, while the cyclopentadienylmanganesetricarbonyl radical is close to the phenyl radical in its electron-donor properties. 3. Under the conditions of acid catalysis, methyl ketones R-CO-CH3 [where R=C6H5, C5H4FeC5H5 and C5H4Mn(CO)3] exchange the hydrogen atoms in the methyl group at practically the same rate.
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