One-pot catalysis of dehydrogenation of cyclohexanones to phenols and oxidative Heck coupling: expedient synthesis of coumarins
作者:Donghee Kim、Minsik Min、Sungwoo Hong
DOI:10.1039/c3cc41296b
日期:——
One-pot reactions leading to highly functionalized coumarins have been developed via a Pd(II)-catalyzed dehydrogenation-oxidative Heck-cyclization process.
通过Pd(II)催化的脱氢-氧化Heck环化过程已经开发出了导致高度功能化香豆素的一锅法反应。
Palladium-Catalyzed Decarboxylative Cross-Coupling Reactions: A Route for Regioselective Functionalization of Coumarins
作者:Farnaz Jafarpour、Samaneh Zarei、Mina Barzegar Amiri Olia、Nafiseh Jalalimanesh、Soraya Rahiminejadan
DOI:10.1021/jo302778d
日期:2013.4.5
A straightforward, regioselective, and step-economical ligand-free palladium-catalyzed decarboxylative functionalization of coumarin-3-carboxylic acids is devised. This protocol is compatible with a wide variety of electron-donating and -withdrawing substituents and allows for construction of various biologically important π-electron extended coumarins.
Regioselective palladium-catalyzed direct cross-coupling of coumarins with simple arenes
作者:Minsik Min、Sungwoo Hong
DOI:10.1039/c2cc34551j
日期:——
An efficient method for the C4-regiocontrolled C–H functionalization of coumarins to enable facile oxidative cross-couplings with simple arene components is disclosed.
Regioselective palladium-catalyzed olefination of coumarinsvia aerobic oxidative Heck reactions
作者:Minsik Min、Yechan Kim、Sungwoo Hong
DOI:10.1039/c2cc37676h
日期:——
Pd-catalyzed oxidative Heck reactions of coumarins were developed via simultaneous C–H functionalization at the C3 position of coumarins under aerobic conditions.