Nickel-Catalyzed Direct Conjugate Addition of Simple Alkenes to Enones
作者:Sensuke Ogoshi、Toshifumi Haba、Masato Ohashi
DOI:10.1021/ja903510u
日期:2009.8.5
A direct conjugateaddition of simple alkenes to enones has been achieved in the presence of a Ni(0)/PCy(3) catalyst.
在 Ni(0)/PCy(3) 催化剂存在下,实现了简单烯烃与烯酮的直接共轭加成。
[3+2] Cycloaddition Reaction of Cyclopropyl Ketones with Alkynes Catalyzed by Nickel/Dimethylaluminum Chloride
作者:Takashi Tamaki、Masato Ohashi、Sensuke Ogoshi
DOI:10.1002/anie.201106174
日期:2011.12.9
[3+2] cycloaddition between the title compounds gives cyclopentene derivatives in the presence of Me2AlCl. The organoaluminum reagent activates the carbonylgroup of the cyclopropyl ketone through coordination of the oxygen atom to the aluminum, and stabilizes the reaction intermediate by the coordination of the chloride to nickel. cod=1,5‐cyclooctadiene, THF=tetrahydrofuran.