AbstractHighly enantioselective halocyclization reactions of indole derivatives, including tryptophols and tryptamines, have been accomplished by means of anionic chiral Co(III) complexes and 1,3-dihalohydantoins (as little as 0.50 equiv). 3-Halo-fused indolines were obtained in excellent yields (up to 98%) and enantioselectivities (up to 98% ee), employing the chiral anion phase-transfer-catalysis strategy.
摘要:利用阴离子手性Co(III)配合物和1,3-二卤代海因杜因(仅需0.50当量)实现了吲哚衍生物的高度对映选择性卤环化反应,包括色氨酸醇和色氨酸胺。采用手性阴离子相转移催化策略,得到了3-卤代融合吲哚烷,收率高(高达98%)和对映选择性高(高达98%ee)。