Reaction of polyfluorinated cyclohexa-2,4-dienones with aryl nitrile oxides
作者:V. N. Kovtonyuk、Yu. V. Gatilov
DOI:10.1134/s1070428013080204
日期:2013.8
Reaction of 1,3-dipolar cycloaddition of 6-chloropentafluorocyclohexa-2,4-dienone, 6-chloro-3-(pentafluorophenoxy)tetrafluorocyclohexa-2,4-dienone, and perfluoro-6-phenoxycyclohexa-2,4-dienone with aryl nitrile oxides proceeds highly stereoselectively at the c C=O group of the dienone providing in a high yield mixtures of diastereomeric fluorine-containing 3-aryl-1,4-dioxa-2-azaspiro[4,5]deca-2,6,8-trienes
1,3-偶极环加成反应的6-氯五氟环己二-2,4-二烯酮,6-氯-3-(五氟苯氧基)四氟环己二-2,4-二烯酮和全氟-6-苯氧基环己-2,4-二烯酮与芳基的反应腈氧化物在二烯酮的c C = O基团高度立体选择性地提供高收率的非对映异构的含氟3-芳基-1,4-二氧杂-2-氮杂螺[4,5]十碳-2,6混合物, 8-三烯。后者与五氟酚酸钠的反应沿着烯丙基取代的类型进行,得到多氟化的3-芳基-8-苯氧基-1,4-二氧杂-2-氮杂螺[4,5]癸-2,6,9-三烯。
Reactions of polyfluorinated cyclohexadienones with diazoalkanes. Part 1. Formation of cyclopropanes from polyfluorinated cyclohexa-2,4-dienones with diazomethane and phenyldiazomethane
作者:Vladimir N. Kovtonyuk、Ljubov S. Kobrina、Yurij V. Gatilov、Irina Yu. Bagryanskaya、Roland Fröhlich、Günter Haufe
DOI:10.1039/b001618g
日期:——
The reaction of 6-chloro-2,3,4,5,6-pentafluorocyclohexa-2,4-dienone (1) with diazomethane gives a mixture of two diastereoisomers of 6-chloro-3a,4,5,6,7a-pentafluoro-3,3a,6,7a-tetrahydrospiro[indazole-7,2′-oxirane] 2a and 2b. In contrast phenyldiazomethane reacts with polyfluorinated cyclohexa-2,4-dienones 1, 9, and 10 in acetonitrile to form the fluorinated 7-phenylbicyclo[4.1.0]hept-4-en-2-ones 4a
Formation of bicyclic adducts in the reactions of fluorinated 2,4-cyclohexadien-1-ones with 2-carboxyhenzenediazonium
作者:A. A. Bogachev、L. S. Kobrina、V. D. Shteingarts
DOI:10.1007/bf00697146
日期:1994.9
Benzyne generated during the decomposition of 2-carboxybenzenediazonium interacts with 6-chloro-2,3,4,5,6-pentafluoro-2,4-cyclohexadien-1-one, 6-chloro-2,4,5,6-tetrafluoro-3-methoxy-2,4-cyclohexadien-1-one, 6-chloro-2,4,5,6-tetrafluoro-3-(pentafluorophenoxy)-2,4-cyclohexadien-1-one, and perfluoro-6-phenoxy-2,4-cyclohexadien-1-one to form [4+2]-cycloaddition products. The latter are easily converted to 1-naphthylacetic acid derivatives by the action of O- and N-nucleophiles.
AXMETOVA N. E.; KOSTINA N. G.; SHTEJNGARTS V. D., ZH. ORGAN. XIMII, 1979, 15, HO 10, 2137-2147
作者:AXMETOVA N. E.、 KOSTINA N. G.、 SHTEJNGARTS V. D.
DOI:——
日期:——
Bogatschew A. A., Kobrina L. S., Shteiingarch W. D., Isw. AN. Ser. khim, (1994) N 9, S 1634-1637
作者:Bogatschew A. A., Kobrina L. S., Shteiingarch W. D.