Atroposelective Haloamidation of Indoles with Amino Acid Derivatives and Hypohalides
作者:Zhaojie Li、Menghan Tang、Chenyang Hu、Shouyun Yu
DOI:10.1021/acs.orglett.9b03456
日期:2019.11.1
atroposelective coupling of indoles with chiral amino acid-based sulfonamides mediated by hypohalides is described. A series of 2-amido-3-haloindoles with a C–N chiral axis are delivered using this strategy. The C3 halogen atoms can facilitate further transformation. Various functionalities, such as carbonyl, phosphine, aryl, and alkenyl groups, can be introduced into the C3 position of indoles. These structurally
描述了吲哚与由次卤化物介导的手性氨基酸基磺酰胺的对映选择性偶联。使用该策略可提供一系列具有C–N个手性轴的2-酰胺基-3-卤代吲哚。C 3卤素原子可促进进一步的转化。可以将各种官能团,例如羰基,膦,芳基和烯基基团引入吲哚的C 3位置。这些结构上不同且轴向手性的吲哚衍生物可以找到进一步的合成用途。可以用轴向手性膦作为示例,该轴向手性膦在Pd催化的交叉偶联中用作配体。