K. Kostka et A. Kotynski, THE REACTIONS OF DIETHYL 2,3-DIHYDRO-4H-1,3-BENZOXAZIN-4-ONE-2-PHOSPHONATE WITH NUCLEOPHILES, Phosphorus, sulfur and silicon and the related elements, 83(1-4), 1993, pp. 215-221
The reactions of diethyl 2,3-dihydro-4H-1,3-benzoxazin-4-one-2-phospho
nate with nucleophilic reagents (nitric, organophosphoric, and sulfuri
c) were investigated. Two lines of derivatives were obtained: N-salicy
loylaminomethanephosphonates 2 and N-salycyloylaminoformamidine 3.