作者:Yuto Hashimoto、Koji Hirano、Tetsuya Satoh、Fumitoshi Kakiuchi、Masahiro Miura
DOI:10.1021/jo3025237
日期:2013.1.18
The ruthenium-catalyzed coupling reactions of benzamides with alkynes in the presence of acetic acid as a promoter smoothly proceeded regio- and stereoselectively through a directed C-H bond cleavage to produce the corresponding ortho-alkenylated products. Phenylpyrazoles and related substrates also underwent a similar coupling to give dialkenylated products selectively. Several competitive experiments were performed to obtain mechanistic insight into both the mono- and dialkenylation reactions.