Russian Chemical Bulletin p. 134 - 136 (1995)
Update date:2022-08-03
Topics:
Bondarenko, N. A.
Bozhko, O. K.
Tsvetkov, E. N.
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.
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