1619-84-7Relevant articles and documents
Synthesis and pyrolysis of perfluoroazo-2-propane
Scherer Jr.,Batt,Stewart
, p. 73 - 83 (1994)
An improved method has been used to synthesize perfluoroazo-2-propane. Pyrolysis over the temperature range 450-514 K in a static system has been shown to be a homogeneous, first-order process. No pressure dependence was observed in the presence of excess inert gas (SF6). The only products were nitrogen and perfluoro-2,3-dimethylbutane. The rate constant (k) for the decomposition process is given by: log(k/s-1) = 16.7 ± 0.2 - (9856 ± 109)/T These results lead to a straightforward mechanism for the decomposition process (1) i-C3F7N2 i-C3F7 → i-C3F7N2 + i-C3F7 (2) i-C3F7N2 → i-C3F7 + N2 (3) 2i-C3F7 → (i-C3F7)2 The results are compared with those for other azo compounds.
SYNTHESIS OF HEXAFLUOROACETONE AZINE
Vershinin, V. L.,Vasil'ev, N. V.,Kolomiets, A. F.,Sokol'skii, G. A.
, p. 1646 - 1647 (2007/10/02)
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Stable fluorinated sulfuranes and sulfurane oxides. Synthesis and reactions
Kitazume, Tomoya,Shreeve, Jean'ne M.
, p. 2173 - 2176 (2007/10/10)
Bis(trifluoromethyl) sulfide, tetrafluoro-1,3-dithietane, and bis(trifluoromethyl) sulfoxide undergo oxidative addition when photolyzed with trifluoromethyl hypochlorite to form a new family of sulfuranes, bis(trifluoromethyl)bis(trifluoromethoxy)sulfurane (1) and tetrafluoro-1,3-tetrakis(trifluoromethoxy)dithietane (3), and of sulfurane oxides, bis(trifluoromethyl)bis(trifluoromethoxy)sulfurane oxide (2). Compounds 1 and 2 are hydrolyzed to bis(trifluoromethyl) sulfoxide and bis(trifluoromethyl) sulfone, respectively. Pyrolysis of 1, 2, or 3 gives bis(trifluoromethyl) sulfide, bis(trifluoromethyl) sulfoxide, and tetrafluoro-1,3-dithietane, respectively, plus bis(trifluoromethyl) peroxide. With primary amines, 1 and 2 yield N-alkylbis(trifluoromethyl)sulfimides and sulfoxyimides, and with N,N′-diethylaminotrimethylsilane, imine formation occurs. Sulfurane oxide 2 forms a new type of stable sulfurane oxide (4), bis(trifluoromethyl)bis(hexafluoroisopropylidenimido)sulfurane oxide, with lithium hexafluoroisopropylidenimine. Sulfurane 1 acts in a similar manner with the nucleophile but the sulfurane 5 is not isolated. Compounds 1 and 2 form α,α,α-(trifluoromethyl)anisole derivatives with substituted phenols. Secondary and tertiary alcohols are dehydrated by 1 or 2 to olefins but symmetrical alkyl ethers result when primary alcohols are reacted.