Failla, Salvatore; Finocchiaro, Paolo, Phosphorus, Sulfur and Silicon and the Related Elements, 1995, vol. 107, # 1-4, p. 79 - 86
作者:Failla, Salvatore、Finocchiaro, Paolo
DOI:——
日期:——
FUNCTIONALIZATION OF 1-AMINO-1-ARYLMETHYL PHOSPHONIC ACID DIETHYL ESTERS AT THE NH GROUP
作者:Salvatore Failla、Paolo Finocchiaro、Giorgio La Rosa
DOI:10.1080/10426509608046392
日期:1996.6.1
Functionalization at the NH group (s) of 1-amino-1-arylmethyl phosphonic acid diethyl esters with mono-isocyanates was performed in order to produce alkyl ureas bearing the phosphonate group. The condensation reaction is easily performed in dry toluene at 80 degrees C using a catalytic amount of Et(3)N, and the white crystalline products are obtained in satisfactory yields. Characterizations of these new compounds, of potential applications in agrochemistry, were performed by H-1-NMR spectroscopy and by MS-FAB spectrometry, which reveals the presence of very diagnostic signals or peaks for structural assignments.