Synthesis of N-β- trifluoroethyl derivatives of maleic and citraconic acids

Summary Halogen derivatives of the N-alkylmonoamides and N-alkylimides of maleic and citraconic acid containing the strongly electronegative group CF₃ in the alkyl radical, previously unreported in the literature, have been synthesized.     

Alkylation ofβ-diketones of the hexahydroindan series and their enamines

Conclusions The reactions of hexahydro-1,3-indandlone with ammonia and some amines were studied, and the structures of the products formed were proved. In the alkylation of-diketones of the hexahydroindan series and their enamines under the usual conditions C-alkylation products are not formed.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1214–1218, July, 1966.     

Effect of bases on 1,3,4-thiadazolo[3,2-a] pyrimidinium salts

1,3,4-Thiadiazolo[3,2-a]pyrimidinium salts are converted by the action of bases to 2-thiocyanopyrimidines, which were also obtained from 2-amino-1,3,4-thiadiazole and -diketones, thus bypassing the step involving the isolation of the pyrimidinum salts.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1660–1661, December, 1974.     

The effect of a magnetic field on the singlet/triplet ratio in geminate ion recombination

Excited state formation by ion recombination in solutions of fluorene in squalene has been studied by pulse radiolysis at the center of a large electromagnet. The products of the slower part of the ion recombination are affected by an applied magnetic field. The fluorescence yield increases by a factor of about 1.5 whereas the triplet yield decreases.