867-33-4Relevant articles and documents
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Kosolapoff,Watson
, p. 4101 (1951)
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Synthesis of asymmetric P,P-dialkyl-P',P'-diphenylethylenediphosphine dioxides
Bondarenko, N. A.,Bozhko, O. K.,Tsvetkov, E. N.
, p. 134 - 136 (2007/10/02)
Asymmetric P,P-dialkyl-P',P'-diphenylethylenediphosphine dioxides were synthesized by the addition of dialyklphosphinous acids to diphenylvinylphosphine oxide in toluene without a catalyst and in DMSO in the presence of concentrated aqueous alkali.The method for isolating dipropyl- and dibutylphosphinous acids obtained by reactions of diethylphosphite with the corresponding alkylmagnesium bromides was improved. - Key words: ethylenediphosphine dioxides; diphenylvinylphosphine oxide; dialkylphosphinous acids; PH-acids; PH-addition.
SYNTHESIS OF ACYCLIC AND CYLIC DIALKYLPHOSPHINIC ACIDS FROM AMMONIUM HYPOPHOSPHITE
Kurdyumova, N. R.,Ragulin, V. V.,Tsvetkov, E. N.
, p. 380 - 383 (2007/10/02)
The possibilities of synthesizing dialkylphosphinic and cyclic phosphinic acids from ammonium hypophosphite, hexamethyldisilazane, and corresponding halogen derivatives have been studied.These acids can be prepared in low yield, but the simplicity of the process compensates for this disadvantage.