95885-99-7Relevant academic research and scientific papers
Process for preparing secondary arylphosphine oxides
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, (2008/06/13)
The invention relates to a process for preparing secondary arylphosphine oxides of the formula (I) STR1 in which R1 to R3, independently of one another are hydrogen, halogen, trifluoromethyl, (C1 -C6)alkyl, (C1 -C6)alkoxy, di(C1 -C6)alkylamino, or diphenylamino and R4 is (C1 -C12)alkyl, cycloalkyl or aralkyl or the grouping STR2 which comprises reacting arylphosphinous alkyl esters of the formula (II) STR3 in which R1, R2, R3 and R4 have the meaning given above and R5 is (C1 -C4)alkyl, with water at elevated temperature, in a molar ratio of phosphinous ester to water of 1:1 to 1:1.5.
