α-dihalogeno β-hydroxy esters or amides by using commercially available Noyori’s complex [RuCl(p-cymene)(R,R)-TsDPEN] as a catalyst (S/C = 100−200) in the asymmetrictransferhydrogenation of the corresponding ketones. Moderate to high yields (up to 99%) and excellent enantioselectivities (up to >99% ee) were achieved for a series of variously substituted dichloro and difluoro β-hydroxy esters and amides.
通过使用市售的Noyori配合物[RuCl(p- Cymene)(R,R)-TsDPEN]作为催化剂(S / C = 100-200)在相应的酮的不对称转移氢化中。对于一系列不同取代的二氯和二氟β-羟基酯和酰胺,可实现中等至高收率(高达99%)和出色的对映选择性(高达> 99%ee)。
Villieras,B.; Castro,B., Bulletin de la Societe Chimique de France, 1968, p. 246 - 250