Polyfluoro-tert-alkylsulfenyl chlorides

Conclusions Polyfluoroalkylsulfenyl chlorides with tert-alkyl groups were obtained and these compounds were found to be similar to sulfenyl chlorides with primary polyfluoroalkyl groups in electrophilic addition at the C=C bond and are distinguished only in somewhat reduced reactivity.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1186–1189, May, 1988.     

Free-radical reactions of methyl trifluoropyruvate with aldehydes

Methyl trifluoropyruvate reacts with aldehydes in the presence of catalytic amounts of benzoyl peroxide at 130–140°C to give β,β,β-trifluoro-α-(methoxycarbonyl)ethyl carboxylates. UV irradiation makes oligomerization of the initial ketoester predominant. Deceased. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1763–1766, September, 1998.     

Reaction of o-diaminoanthraquinones with malonic ester

The reaction of 1,2- and 2,3-diaminoanthraquinones with malonic ester was studied. It was established that the reaction products are N-ethoxymalonyl-o-diaminoanthraquinones and their heterocyclic derivatives — 1H-2-ethoxycarbonylmethylanthraimidazolediones. N-Ethoxymalonlyl-2,3-anthraquinone undergoes cyclization to 1H-2,3,4,5-tetrahydroanthra(2,3-b]-1,4-diazepine-2,4,7,12-tetraone when it is heated with sodium methoxide in absolute methanol, whereas 2-N-ethoxymalonyl-1,2-diaminoanthraquinone undergoes cyclization to 1H-2-ethoxy carbonylmethy lanthra-1,2-d]imidazole-6,11-dione.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 965–968, July, 1978.     

Reaction of polyfluorocarbonyl compounds with 8-hydroxyquinolines

It was shown that polyfluorocarbonyl compounds at 25°C in aprotic solvents readily C-alkylate 8-hydroxy- and 5-methyl-8-hydroxyquinolines. Selectivity was observed toward substitution at position 7 by nitropentafluoro- and hexafluoroacetones and at position 5 of 8-hydroxyquinoline by the methyl ester of trifluoropyruvic acid.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2786–2789 December, 1989.     

Cycloaddition reactions of methyl 2-N-trifluoroacetyliminotrifluoropropionate

Conclusions The methyl ester of 2-(N-trifluoroacetylimino)trifluoropropionic acid reacts with diazo-alkanes at the isolated C=N bond similarly to azomethines, forming [1+2]- and/or [3+2]-cycloadducts, and with unsaturated donating type compounds as a 1,3-dipolar conjugated system to give products of [2+4]-cycloaddition regio- and stereo-selectively.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 132–136, January, 1988.