Asymmetric pinacolrearrangement: The pinacolrearrangement has long been known to be difficult to control in terms of regioselectivity and stereoselectivity. It has been found that indolyl diols can be treated with chiral phosphoric acids to effect a regio‐ and enantioselective pinacolrearrangement with high efficiency (see scheme; Ar=1‐naphthyl).
非对称频哪醇重排:频哪醇重排长期以来已知难以在区域选择性和立体选择性方面进行控制。已经发现,吲哚二醇可以用手性磷酸处理以高效地进行区域和对映选择性的频哪醇重排(参见方案; Ar = 1-萘基)。