Haloalkylation reaction of polyfluoroaromatic amino, hydroxy and thio derivatives with ArCCl3 or ArCF3in the presence of AlCl3. Synthesis of polyfluoroaromatic compounds of various classes.
Specific Features of Reaction of 2-R-Benzo[e][1,3,2]dioxaphosphinin-4-ones with Perfluorodiacetyl. Synthesis and Steric Structure of 4′,5′-Bis(trifluoromethyl)-4-oxo-2-(2,2,3,3-tetrafluoropropoxy)-2λ 5-spiro[benzo[e][1,3,2]dioxaphosphinine-2,2′-[1,3,2]dioxaphosphole]
作者:I. V. Konovalova、V. F. Mironov、G. A. Ivkova、E. R. Zagidullina、A. T. Gubaidullin、I. A. Litvinov、M. A. Kurykin
DOI:10.1007/s11176-005-0270-6
日期:2005.4
2-R-benzo[e][1,3,2]dioxaphosphinin-4-ones react with perfluorodiacetyl under mild conditions to form relatively labile spirophosphoranes containing a 1,3,2-dioxaphosphole ring. These compounds gradually convert to more stable 2-R-4,5-bis(trifluoromethyl)-1,3,2λ5-dioxaphosphole 2-oxides and diastereometic 2-R-4-(trifluoroacetyl)-4-(trifluoromethyl)benzo[f][1,3,2λ5]dioxaphosphepine 2-oxides, whose structure was confirmed by means of NMR and IR spectroscopy. The structure of 4′,5′ -bis(trifluoromethyl)-4-oxo-2-(2,2,3,3-tetrafluoropropoxy)-2λ 5-spiro[benzo[e][1,3,2]dioxaphosphinine-2,2′-[1,3,2]dioxaphosphole] was confirmed by X-ray diffraction analysis.