Process for the manufacture of bis(phosphine oxide)-and bis(phosphonate)-compounds
申请人:F. HOFFMANN-LA ROCHE AG
公开号:EP0926152A1
公开(公告)日:1999-06-30
A process for the manufacture of bisphosphine oxide compounds and bisphosphonates as intermediates for the production of bisphosphine ligands, in which in a single step process
a) a phosphine oxide compound is reacted in an organic solvent at -70°C to 20°C with 0.5-3 eq. of a lithium or magnesium amide compound,
b) 0.5-3 eq. of oxidatively-acting metal salt or metal salt complex are added to the mixture obtained in stage a) in a temperature range of -70°C to 20°C, with a racemate of a bisphosphine oxide compound being obtained;
c) a racemate cleavage is carried out if desired; and
d) the bisphosphonates obtained in stage b) or c) are converted into bisphosphine oxides.
一种制造双膦氧化物化合物和双膦酸盐的工艺,作为生产双膦配体的中间体,其中在单步工艺中
a) 氧化膦化合物在-70°C 至 20°C的有机溶剂中与 0.5-3 等量的锂或镁酰胺化合物反应、
b) 在-70°C 至 20°C的温度范围内,向 a)阶段得到的混合物中加入 0.5-3 等量的氧化性金属盐或金属盐络合物,得到双氧化膦化合物的外消旋体;
c) 如果需要,进行外消旋体裂解;以及
d) 将阶段 b) 或 c) 中得到的双膦酸盐转化为双膦氧化物。