B. Boduszek et M. Uher, Synthesis of novel pyrone, chromone and coumarin derivatives of aminomethanephosphonic acid, SYN COMMUN, 30(10), 2000, pp. 1749-1754
Novel pyrone, chromone and coumarin derivatives of aminomethanephosphonic a
cid were obtained in a one-step process, by treatment of a mixture of heter
ocyclic aldehyde and amine with tris(trimethylsilyl)phosphite, and a subseq
uent solvolysis of the formed silylated product with methanol.