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
Catalytic (3 + 2) annulation of donor–acceptor aminocyclopropane monoesters and indoles
作者:Vincent Pirenne、Emma G. L. Robert、Jerome Waser
DOI:10.1039/d1sc01127h
日期:——
The efficient catalytic activation of donor–acceptor aminocyclopropanes lacking the commonly used diester acceptor is reported here in a (3 + 2) dearomative annulation with indoles. Bench-stable tosyl-protected aminocyclopropyl esters were converted into cycloadducts in 46–95% yields and up to 95 : 5 diastereomeric ratio using catalytic amounts of triethylsilyl triflimide. Tricyclic indoline frameworks