Novel chiral diphosphine ligands with a pinene core obtained via an allylphosphinite–allylphosphine oxide rearrangement
作者:Andrei Gavryushin、Kurt Polborn、Paul Knochel
DOI:10.1016/j.tetasy.2004.05.045
日期:2004.7
A number of new chiral diphosphine ligands with a pinene framework were synthesized and tested in some transition metal-catalyzed asymmetric reactions (enantioselectivities up to 84% ee were achieved). The [2,3]-sigmatropic allylphosphinite–allyl phosphine oxide rearrangement was applied as a key step of the synthesis. An improved procedure for the phosphine oxide reduction and a new protocol for the
合成了许多具有a烯骨架的新手性二膦配体,并在某些过渡金属催化的不对称反应中进行了测试(对映选择性高达84%ee)。[2,3]-σ烯丙基次亚膦酸酯-烯丙基氧化膦的重排被用作合成的关键步骤。已开发出一种改进的氧化膦还原方法和一种新的脱氧膦-硼烷配合物脱保护方案。