The activation energy as guiding factor in the fragmentation of substituted diphenylmethanes

The mass spectra of a series of substituted diphenylmethanes were obtained. The mass spectral features were compared with those of the corresponding 1,2 diphenylethanes and discussed in terms of the factors which influence the electron-impact fragmentation. In the series examined, it is shown that the activation energy is the most important factor in determining cracking patterns. The meaning of the averaged rate constants is criticised.     

Hydrogenation of furfural with alkali-metal amalgams

The possibility of reducing furfural to furyl alcohol with potassium and sodium amalgams under the conditions of neutralizing the alkali formed with carbon dioxide has been investigated. The reduction of furfural can be directed to the predominant formation of furyl alcohol by regulating the rate of feed of furfural into the reaction vessel.     

Effectiveness of initiation in the reaction of cumene hydeopeeoxide with paramethoxyphenol

Conclusions It was shown by a study of the kinetics of the oxidation of cumene in the presence of the hyeroperoxide and p-methoxyphenol that in the reaction of the hydroperoxide with p-methoxyphenol, radicals are formed with an efficiency equal to 0.54 (120°).Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2191–2194, October, 1972.     

Synthesis and some chemical transformations of 1-N-(β-hydroxyethyl)-3,6-dimethyluracil

Conclusions A study was made of the synthesis and some of the chemical transformations of 1-N-(-hydroxyethyl)-3,6-dimethyluracil.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 422–428, February, 1972.