Direct synthesis of 8-aryl tetrahydroquinolines via pd-catalyzed ortho-arylation of arylureas in water
作者:Zhen Jiang、Lingjuan Zhang、Chaonan Dong、Xiaoming Su、Huanrong Li、Weijun Tang、Lijin Xu、Qinghua Fan
DOI:10.1039/c2ra22901c
日期:——
An efficient protocol for the direct synthesis of 8-arylated tetrahydroquinolines via Pd-catalyzed ortho-arylation of aryl ureas with aryl iodides was developed. The reaction proceeded smoothly in water under ligand-free and surfactant-free conditions, providing the desired products in high yields with remarkable functional group tolerance.
Cationic Palladium(II) Catalysis: C−H Activation/Suzuki−Miyaura Couplings at Room Temperature
作者:Takashi Nishikata、Alexander R. Abela、Shenlin Huang、Bruce H. Lipshutz
DOI:10.1021/ja910973a
日期:2010.4.14
Cationic palladium(II) catalyst realized facile C-Hactivation of aryl urea with arylboronic acids at roomtemperature. This reaction is extremely mild to carry out aromatic C-Hactivations through electrophilic substitution.
Exceptionally Mild Palladium(II)-Catalyzed Dehydrogenative C–H/C–H Arylation of Indolines at the C-7 Position under Air
作者:Lin-Yu Jiao、Polina Smirnov、Martin Oestreich
DOI:10.1021/ol503035z
日期:2014.11.21
method for the dehydrogenative C–H/C–H cross-coupling at the C-7 position of indolines containing a urea as a directing group is reported. The new protocol is a rare example of an aerobic palladium(II)-catalyzed crossdehydrogenativecoupling (CDC) reaction that proceeds at low temperature. The use of either Cu(OAc)2 in an open flask or dioxygen (balloon) at 50 °C tolerates indolines not substituted