Diphosphine sulfides derived from 2,2â²-biphosphole have been efficiently synthesized in an enantiomerically pure form by a four step synthetic sequence. These S,S-ligands were used for the first time in Pd-catalyzed asymmetric allylic alkylation. Good yields and enantiomeric excess up to 73% were obtained.
通过四步合成顺序,我们高效合成了对映体纯度为 2,2â²-联
磷的
二膦硫化物。这些 S,S
配体首次用于 Pd 催化的不对称烯丙基烷基化反应。获得了良好的产率和高达 73% 的对映体过剩率。