The novel chiral diaqua palladium(II) complexes of (R)-BINAP 9a and (R)-Tol-BINAP 9b were prepared in good yield, and their structures were determined by X-ray crystallography. These air- and moisture-stable complexes were found to be excellent catalysts for the asymmetric aldol reaction, and up to 89% ee of asymmetric induction was achieved using these catalysts.
制备了高产率的手性二
水合
钯(II)配合物(R)-BINAP 9a和(R)-Tol-BINAP 9b,并通过X射线晶体学确定了它们的结构。这些对空气和湿气稳定的配合物被发现是对映选择性羟醛反应的优异催化剂,使用这些催化剂可实现高达89%的对映体过量。