ABSTRACT Novel synthesis of fluorine bearing 5-phospha - l,2,4-triazin-3-thiones and 5 -phospha-1,2,4-triazepin - 3 - thiones was developed by use of the N4 - substituted thiosemicarbazides with diethylbenzoyl phosphonate , diphenyl ( 2,4,6-trimethylbenzoyl) phosphine oxide and/or acetonyl triphenylphosphonium chloride in the presence of THF - DMF followed by fluorinated under refluxing with trifluoroacetic anhydride.
Buy this Article
|