NOVEL FLUORINE-CONTAINING PHOSPHORUS YLID S FROM AFLUOROPHENOXY-TETRAFLUOROCYCLOHEXA-2,4-DIEN-1-ONE AND TRIPHENYLPHOSPHANE

The reaction of afluorophenoxy-tetrafluorocyclohexa-2,4-dien-1-one (1) with one equivalent of triphenylphosphane leads to the spectroscopica lly detectable ro-2-triphenylphosphoranylidene-4-cyclohexen-1-one (2), which upon hydrolysis or reaction with hydroxyl groups of the glass s urface yields triphenylphosphoranylidene-4-cyclohexene-1,3-dione (3). The structure of 3 was determined by NMR measurements and an X-ray dif fraction study.