N′-dioxide complex as catalyst. This strategy provided an array of optically active 2-acyl-2-hydroxy cyclohexanones in moderate to good yields with high enantioselectivities. The asymmetric isomerizations of acyclic α-hydroxy aldehydes and α-iminols were achieved as well under modified conditions, affording the corresponding chiral α-hydroxy ketones and α-amino ketones in moderate results. Moreover, further
环状α-酮醇的高度对映选择性酰基肌醇重排反应已经开发出来,其中手性Al(III)–N,N'-二氧化物配合物为催化剂。该策略以中等到良好的产率和高对映选择性提供了一系列光学活性的2-酰基-2-羟基
环己酮。在改性条件下也可以实现无环α-羟基醛和α-亚
氨基的不对称异构化,得到中等程度的相应手性α-羟基酮和α-
氨基酮。此外,将产物进一步转化为对映体富集的二醇。