Reactions of dialkyl phosphonates and phosphinates with bis(benzylideneimino)toluene

Article abstract of DOI:10.1007/BF01431633

Dialkyl phosphonates bind to the C=N bond of bis(benzylideneimino)toluene, with formation of dialkyl (benzylideneimino)benzylaminobenzyl phosphonates. The complicated character of IR spectra of these compounds is connected with the possibility of formation of dimeric cyclic associates and intramolecular hydrogen bonding. Phosphinic acid reacts with bis(benzylidenimino)toluene in a 2 : 1 ratio to afford N,N′-benzylidenebis(α-amino-benzylphosphonic) acid.