Palladium-Catalyzed Base-Promoted Arylation of Unactivated C(sp<sup>3</sup>)-H Bonds by Aryl Iodides: A Practical Approach To Synthesize β-Aryl Carboxylic Acid Derivatives
A highly efficientprotocol for the β-arylation of carboxylicamides by aryl iodides under PdCl2(CH3CN)2/CsOAc catalysis was developed. This method was found to tolerate a broad scope of substrates and was successfully employed in the preparation of a variety of β-aryl α-amino and γ-amino acid derivatives. The utility of this method was further illustrated in the synthesis of the psychotropic drug
Direct Arylation of Primary and Secondary sp<sup>3</sup> C–H Bonds with Diarylhyperiodonium Salts via Pd Catalysis
作者:Fei Pan、Peng-Xiang Shen、Li-Sheng Zhang、Xin Wang、Zhang-Jie Shi
DOI:10.1021/ol402116a
日期:2013.9.20
Palladium-catalyzed primary and secondary sp3 C–H bond arylation is reported. The method using diarylhyperiodonium salts as arylation reagents shows good functional group tolerance and proceeds under mild reaction conditions. The KIE experiments show that the C–H bond activation is the rate-determining step.