Nickel(0)-Catalyzed Three-Component Connection Reaction of Dimethylzinc, 1,3-Dienes, and Carbonyl Compounds
作者:Masanari Kimura、Shintaro Matsuo、Kazufumi Shibata、Yoshinao Tamaru
DOI:10.1002/(sici)1521-3773(19991115)38:22<3386::aid-anie3386>3.0.co;2-w
日期:1999.11.15
Linear 1:1:1 coupling of dimethylzinc, 1,3-dienes, and carbonyl compounds in this order is facilitated by catalytic amounts of [Ni(acac)(2)] to give (E)-3-hexen-1-ols in good yields under mild conditions [Eq. (a)]. Increasing steric hindrance at the carbonyl group favors formation of the 1:2:1 adduct, and this is the sole product when the carbonyl compound is acetone. acac=acetylacetonate.
催化量的[Ni(acac)(2)]促进了二甲基锌,1,3-二烯和羰基化合物的线性1:1:1偶联,生成(E)-3-hexen-1-ols在温和条件下的收率很高[等式 (一种)]。在羰基上增加位阻有利于形成1:2:1加合物,当羰基化合物为丙酮时,这是唯一的产物。acac =乙酰丙酮酸酯。