Cycloisomerization of Carbamoyl Chlorides in Hexafluoroisopropanol: Stereoselective Synthesis of Chlorinated Methylene Oxindoles and Quinolinones
作者:José F. Rodríguez、Anji Zhang、Jonathan Bajohr、Andrew Whyte、Bijan Mirabi、Mark Lautens
DOI:10.1002/anie.202103323
日期:2021.8.16
chloroacylation of alkyne-tethered carbamoyl chlorides. This reaction avoids the use of a metal catalyst and accesses products in high yields and stereoselectivities. Additionally, this reaction is scalable and proved amenable to a series of product derivatizations, including the synthesis of nintedanib. The reactivity of alkene-tethered carbamoyl chlorides with hexafluoroisopropanol (HFIP) was harnessed
Microwave-Assisted Multistep Synthesis of Functionalized 4-Arylquinolin-2(1<i>H</i>)-ones Using Palladium-Catalyzed Cross-Coupling Chemistry
作者:Toma N. Glasnov、Wolfgang Stadlbauer、C. Oliver Kappe
DOI:10.1021/jo0502549
日期:2005.5.1
been synthesized in a short and concise manner employing readily available 4-hydroxyquinolin-2(1H)-ones as intermediates. Keysteps in the synthesis include the derivatization of the quinolin-2(1H)-one cores usingpalladium-catalyzed Suzuki and Heck reactions, installing the 4-aryl and 3-alkenyl substituents. All synthetic transformations (six steps) required for the synthesis of the desired target