with good yields and stereoselectivities. Subsequent functional group transformation reactions were conducted by successive treatment of the hydrophosphination products with Dibal-H and chemoselectively yielded the formyl- and hydroxyl-functionalized chiral 1,3-diphosphine complexes. The absolute configurations and coordination information of the novel 1,3-diphosphine complexes were analyzed by X-ray crystallography
通过一锅法,由
3-氯丙醛二乙基缩醛合成了一种新颖的
氰基官能化的单膦
钯底物,该底物含有邻
金属化的(R)-(1-(二甲基
氨基)乙基)
萘作为手性助剂。二苯膦与反式或顺式的不对称加氢
磷酸反应。-单膦底物在温和的条件下进行,得到具有良好产率和立体选择性的相应的
氰基取代的手性1,3-双(
二苯基膦基)
丙烷钯配合物。通过用Dibal-H连续处理氢
磷酸化产物进行随后的官能团转化反应,并
化学选择性地产生甲酰基-和羟基官能化的手性1,3-
二膦配合物。通过X射线晶体学分析了新型1,3-
二膦配合物的绝对构型和配位信息。通过用
氰化钾水溶液处理,可以从相应的二卤代
钯络合物中以高收率释放具有
氰基,甲酰基和羟基官能团的光学纯的1,3-双(
二苯基膦基)
丙烷配体。