CHEMISTRY OF 1,3-DIMETHYL-1,3-DIAZA-5,6-B ENZO-2-LAMBDA(3)-PHOSPHORANE-4-ONES - REACTIONS WITH HEXAFLUOROACETANE - THERMOLYTIC AND HYDROLYTIC CONVERSION OF THE SPIROPHOSPHORANES FORMED
Hj. Plinta et al., CHEMISTRY OF 1,3-DIMETHYL-1,3-DIAZA-5,6-B ENZO-2-LAMBDA(3)-PHOSPHORANE-4-ONES - REACTIONS WITH HEXAFLUOROACETANE - THERMOLYTIC AND HYDROLYTIC CONVERSION OF THE SPIROPHOSPHORANES FORMED, Journal of fluorine chemistry, 69(1), 1994, pp. 51-55
The reactions of the 1,3-dimethyl-1,3-diaza-2-P-substituted-?? (2-chlo
roethyl)- or s(2-chloroethyl)amino-2lambda3-phosphorinan-4-ones 1 and
4 with hexafluoroacetone in a molar ratio of 1:2 furnished the spiroph
osphoranes 2 and 5. In the reaction of 1 with hexafluoroacetone, small
amounts of the by-product 3, involving lambda4 phosphorus were formed
and characterized by F-19 and P-31 NMR spectroscopy. The -1,3-diaza-2
-oxo-5,6-benzo-2lambda4-phosphorinan?? -4-ones 6 and 7 were obtained f
rom the spirophosphoranes 2 and 5, either by reaction with water or on
heating; in the latter case, the elimination of tetrakis(trifluoromet
hyl)oxirane is suggested as occurring. Characterization of 2 and 5-7 w
as on the basis of their H-1-, C-13-, F-19-, and P-31--NMR spectra, an
d their mass spectra.