Catalytic enantioselective chlorination of cyclic β-keto esters in the presence of chiral Pd(II) complexes
作者:Young Ku Kang、Hee Hun Kim、Kwang Oh Koh、Dae Young Kim
DOI:10.1016/j.tetlet.2012.05.064
日期:2012.7
The catalytic enantioselective electrophilic chlorination promoted by chiral palladium complexes is described. The treatment of β-keto esters with 2,3,4,5,6,6-hexachlorocyclohex-2,4-dienone as chlorine source under mild reaction conditions afforded the corresponding α-chlorinated β-keto esters with excellent enantioselectivities (up to 94% ee).
描述了由手性钯配合物促进的催化对映选择性亲电子氯化。在温和的反应条件下,用2,3,4,5,6,6-六氯环己基-2,4-二烯酮作为氯源处理β-酮酯,得到相应的α-氯代β-酮酯,其对映选择性极好(最高可达94%ee)。