Nickel-catalyzed intermolecular coupling of 1,3-dienes and aldehydes via transmetalation of nickelacycles with diisobutylaluminum acetylacetonate.
Intermolecular coupling reactions of 1,3-dienes and aldehydes via transmetalation of nickelacycle intermediate with (i)Bu(2)Al-acac were investigated. In the reactions, a linear adduct or a branched adduct was produced, depending upon the nature of 1,3-dienes and aldehydes, via two nickelacycles that were relatively stable among the four possible nickelacycles because of the equilibrium with pi-allynickel forms.
Sato
Yoshihiro
Y
Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
Sawaki
Rieko
R
Saito
Nozomi
N
Mori
Miwako
M