Direct α-Fluorination of Ketones Using N-F Reagents
作者:Stojan Stavber、Marjan Jereb、Marko Zupan
DOI:10.1055/s-2002-35625
日期:——
bis(tetrafluoroborate) (Accufluor NFTh) as a fluorine atom transfer reagent and methanol as solvent enabled direct regiospecific fluorofunctionalization of the u-carbonyl position in ketones without prior activation of the target molecules. Methoxy or hydroxy substituted derivatives of 1-indanone, 1-tetralone and oxo derivatives of thiophene, benzo[b]thiophene, benzofuran and benzopyran were regiospecifically
Construction of a Chiral β-Fluoroamine by Asymmetric Mannich Reaction of 2-Fluoroindanone with Pyrazolinone Ketimines
作者:Weizhi Gu、Jindong Li、Kuiliang Li、Qi Sun、Tong Li、Zhenggen Zha、Zhiyong Wang
DOI:10.1021/acs.joc.2c02040
日期:——
The asymmetricMannichreaction of 2-fluoroindanone with ketimine was developed under the catalysis of a kind of chiral copper complex, affording a chiral tetrahedral center containing fluorine. A series of β-fluoroamine derivatives can be obtained in excellent yields (73–94%) with high diastereoselectivities (>99:1 dr) and enantioselectivities (89–99%). The possible transition state was supported
Palladium-Catalyzed Enantioselective α-Arylation of α-Fluoroketones
作者:Zhiwei Jiao、Jason J. Beiger、Yushu Jin、Shaozhong Ge、Jianrong Steve Zhou、John F. Hartwig
DOI:10.1021/jacs.6b09580
日期:2016.12.14
carbonyl compounds is a widely practiced method for C-C bondformation. Several enantioselective versions of this process have been reported, but intermolecular, enantioselective coupling reactions of aryl electrophiles with α-fluoro carbonyl compounds have yet to be disclosed. We report enantioselective coupling of aryl and heteroaryl bromides and triflates with α-fluoroindanones catalyzed by palladium