AbstractAn unexpected addition of acetic acid to ortho‐electron‐deficient alkynyl‐substituted aryl aldehydes catalyzed by palladium(II) acetate was achieved, which provided a convenient method for the synthesis of dihydroisobenzofurans in moderate to good yields. The electron‐withdrawing groups attached to alkynes may play an important role for the cyclization.magnified image
Palladium-Catalyzed Cross-Coupling of Electron-Poor Terminal Alkynes with Arylboronic Acids under Ligand-Free and Aerobic Conditions
作者:Ming-Bo Zhou、Wen-Ting Wei、Ye-Xiang Xie、Yong Lei、Jin-Heng Li
DOI:10.1021/jo101063p
日期:2010.8.20
Palladium-catalyzed cross-coupling reaction of terminal alkynes with arylboronicacids has been described. In the presence of Pd(OAc)2 and Ag2O, a variety of terminal alkynes, including electron-poor terminal alkynes, smoothly underwent the reaction with numerous boronic acids to afford the corresponding internal alkynes in moderate to good yields. Moreover, this methodology was applied to the synthesis
Synthesis of Indole-Substituted Indanones via Palladium(II)-Catalyzed Tandem Reaction of<i>ortho</i>-Electron-Deficient Alkynyl-Substituted Aryl Aldehydes with Indoles
作者:Jianbo Zhang、Xiuling Han、Xiyan Lu
DOI:10.1021/acs.orglett.6b01240
日期:2016.6.17
A Pd(OAc)2-catalyzed cyclization reaction of ortho-electron-deficient alkynyl-substituted arylaldehydes with indoles was accomplished, providing an efficient and economical way to synthesize indole-substituted indanones. The electron-withdrawing group attached to the alkyne and the nucleophilic indole play important roles in the formation of the indanone ring.