The present invention relates to a new, selective process for the preparation of mono- and bisacylphosphanes of formula (I) n and m are each independently of the other 1 or 2; R
1
, if n=1, is e.g. phenyl R
1
, if n=2, is e.g. C
1
-C
18
alkylene or phenylene; R
2
is e.g. C
1
-C
18
alkyl, phenyl or substituted phenyl; R
3
is e.g. C
1
-C
18
alkyl, by (I) reacting a phosphorous halide of formula IIa or a phosphorous halide oxide of formula (IIb) or a phosphorous halide sulfide of formula (IIc) with an alkali metal in a solvent in the presence of a proton source; (2) subsequent reaction with m acid halides of formula (III) An oxidation step may follow to obtain mono- and bisacylphosphane oxides or mono-and bisacylphosphane sulfides.
本发明涉及一种制备式(I)的单
膦酸和
双膦酸的选择性新工艺 n和m各自独立地为1或2;R
1
如果 n=1,则为例如苯基 R
1
如 n=2 则为 C
1
-C
18
亚烷基或亚苯基;R
2
是例如 C
1
-C
18
烷基、苯基或取代苯基; R
3
例如是 C
1
-C
18
烷基,通过(I) 式 IIa 的
磷卤化物或式 (IIb) 的
磷卤氧化物或式 (IIc) 的
磷卤
硫化物与碱
金属在溶剂中在质子源存在下反应;(2) 随后与式 (III) 的 m 酸卤化物反应;(3) 氧化步骤可获得单基和双基
磷烷氧化物或单基和双基
磷烷
硫化物。