Enantioselective Access to 1<i>H</i>
-Isoindoles with Quaternary Stereogenic Centers by Palladium(0)-Catalyzed C−H Functionalization
作者:Daria Grosheva、Nicolai Cramer
DOI:10.1002/anie.201809173
日期:2018.10.8
enantioselective method for the synthesis of chiral 1H‐isoindoles bearing quaternary stereogenic centers is reported. Powered by readily accessible phosphordiamidite ligands, the presented palladium(0)‐catalyzed C−H functionalization uses trifluoroacetimidoyl chlorides as electrophilic components. It delivers previously inaccessible perfluoroalkylated 1H‐isoindoles in high yields and enantioselectivities. The
报道了一种催化对映体选择性的方法,用于合成带有四级立体异构中心的手性1 H-异吲哚。在容易获得的磷二酰胺配体的支持下,提出的钯(0)催化的CH官能化使用三氟乙酰亚胺基氯作为亲电子组分。它以高收率和对映选择性提供了以前无法获得的全氟烷基化1 H-异吲哚。亲核试剂的随后的非对映选择性加成提供了被密集取代和空间受阻的异吲哚啉的途径。