Abstract: | Substituted (8-aminobenzyl)dinaphthodioxaphosphocine 8-oxides were prepared in a two-step process. The first step of the reaction
is one-pot synthesis of α-aminophosphonates by the reaction of aldehydes, amines, and trialkyl phosphite in the presence of
ceric ammonium nitrate. The second step is cyclization of α-aminophosphonates with bis(2-hydroxy-1-naphthyl)methane in the
presence of a catalytic amount of p toluenesulphonic acid under reflux conditions. Their structures were established by elemental
analyses, IR, 1H, 13C, 31P NMR, and mass spectral data.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, 1574–1580, September, 2007. |