Da. Efremov et al., PHOSPHORYLATION OF ORGANIC-COMPOUNDS BY PHOSPHORIC ANHYDRIDE .1. PHOSPHORYLATED BENZANILIDES, Journal of the Chemical Society. Perkin transactions. I, (17), 1994, pp. 2443-2447
Phosphoric anhydride has been shown to react readily with benzanilides
1 to give initially N-phosphorylated benzanilides 2, which rearrange
to E and Z O-phosphorylated imidates 3 in the presence of protic compo
unds.