Cationic Rh(I)/modified-BINAP-catalyzed reactions of carbonyl compounds with 1,6-diynes leading to dienones and ortho-functionalized aryl ketones.
We have determined that a cationic rhodium(I)/H8-BINAP complex catalyzes a [2 + 2 + 2] cycloaddition of both activated and unactivated carbonyl compounds with 1,6-diynes leading to dienones in high yields. On the other hand, unactivated aryl ketones react with 1,6-diynes in the presence of a cationic rhodium(I)/Segphos complex to give ortho-functionalized aryl ketones in high yields.
Tanaka
Ken
K
Department of Applied Chemistry, Graduate School of Engineering, and Instrumentation Analysis Center, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan. tanaka-k@cc.tuat.ac.jp
Otake
Yousuke
Y
Wada
Azusa
A
Noguchi
Keiichi
K
Hirano
Masao
M