Pd(II)-Catalyzed <i>meta</i>-C–H Olefination, Arylation, and Acetoxylation of Indolines Using a U-Shaped Template
作者:Guoqiang Yang、Petra Lindovska、Dajian Zhu、Justin Kim、Peng Wang、Ri-Yuan Tang、Mohammad Movassaghi、Jin-Quan Yu
DOI:10.1021/ja505737x
日期:2014.7.30
meta-C-H olefination, arylation, and acetoxylation of indolines have been developed using nitrile-containing templates. The combination of a monoprotected amino acid ligand and the nitrile template attached at the indolinyl nitrogen via a sulfonamide linkage is crucial for the meta-selective C-H fiunctionalization of electron-rich indolines that are otherwise highly reactive toward electrophilic palladation at the para-positions. A wide range of synthetically important and advanced indoline analogues are selectively functionalized at the meta-positions.