Formation of Fluorinated 1-Oxaspiro[2.5]octa-4,7-dienes from Polyfluorinated Cyclohexa-2,5-dienones with Diazomethane and Reactions with Aryl and2-Chloroethyl Isocyanates
作者:Vladimir N. Kovtonyuk、Ljubov S. Kobrina、Olga M. Kataeva,、Günter Haufe
DOI:10.1002/ejoc.200400559
日期:2005.3
The reactions of four polyfluorinatedcyclohexa-2,5-dienones 1a–1d, additionally substituted with an electron withdrawing substituent at the 4-position, with diazomethane give mixtures of two diastereomeric fluorinated1-oxaspiro[2.5]octa-4,7-dienes 2 and 3. Compounds 2a/3a and 2b/3b react with aryl and 2-chloroethyl isocyanates in the presence of lithium chloride or sodium pentafluorophenoxide to
Budnik, A. G.; Shteingarts, V. D.; Yakobson, G. G., Zhurnal Organicheskoi Khimii, 1970, vol. 6, p. 1204 - 1212
作者:Budnik, A. G.、Shteingarts, V. D.、Yakobson, G. G.
DOI:——
日期:——
Budnik,A.G. et al., Journal of Organic Chemistry USSR (English Translation), 1970, vol. 6, p. 1204 - 1212
作者:Budnik,A.G. et al.
DOI:——
日期:——
Synthesis of fluorine-containing 1,4-dioxa-2-azaspiro-[4.5]deca-2,6,9-trienes by reaction of polyfluorinated cyclohexa-2,5-dienones with nitrile oxides
作者:V. N. Kovtonyuk、L. S. Kobrina、Yu. V. Gatilov
DOI:10.1134/s1070428012060061
日期:2012.6
4-Pentafluorophenoxy-, 4-nitro-, and 4-chloropentafluorocyclohexa-2,5-dien-1-ones and 3,4,5-tris-(pentafluorophenoxy)trifluorocyclohexa-2,5-dien-1-one react with some benzonitrile and acetonitrile oxides exclusively at the carbonyl group, leading to the formation of mixtures of diastereoisomeric fluorinated 1,4-dioxa-2-azaspiro[4.5]deca-2,6,9-trienes in good yield.