The Pd(II)-catalyzedC–Hbond activation/C–Nbond cleavage annulation reaction of N-alkyoxyamide aryne is developed to synthesize 9,10-dihydrophenanthrenone derivatives. This reaction exhibited good functional group compatibility with yields up to 92%. Detailed mechanistic studies showed that the key to C–Nbond cleavage is the formed eight-membered palladacycle intermediate undergoing nucleophilic
Synthesis of β-, γ-, and δ-Lactams via Pd(II)-Catalyzed C−H Activation Reactions
作者:Masayuki Wasa、Jin-Quan Yu
DOI:10.1021/ja807129e
日期:2008.10.29
Pd(II)-catalyzed intramolecular amination of Sp(2) and Sp(3) C-H bonds are developed using a combination of CuCl2 and AgOAc as the oxidant. The reaction protocol tolerates the presence of a double bond in the substrates. This catalytic reaction provides practical access to a wide range of beta-, gamma-, and delta-lactams.
An Efficient Approach for 3,3-Disubstituted Oxindoles Synthesis: Aryl Iodine Catalyzed Intramolecular C–N Bond Oxidative Cross-Coupling
作者:Yang Wang、Mo Yang、Yuan-Yuan Sun、Zheng-Guang Wu、Hong Dai、Shuhua Li
DOI:10.1021/acs.orglett.1c03224
日期:2021.11.19
Herein, we report the first intramolecular C–N bond formation of phenylpropanamide derivatives via organocatalytic oxidative reactions, affording 3,3-disubstituted oxindole derivatives with up to 99% yield. The high efficiency of this reaction is exemplified by the transition metal-free mild conditions and the ability to perform the reaction on a gram scale. Meanwhile, the DFT calculation of the catalytic