NiCl<sub>2</sub>(PPh<sub>3</sub>)<sub>2</sub>–Zn Promoted Deallyloxycarbonylative Directed Aldo Reaction of Allyl β-Keto Carboxylates with Aldehydes to β-Hydroxy Ketones
作者:Junzo Nokami、Haruhisa Konishi、Hiroyuki Matsuura
DOI:10.1246/cl.1991.2023
日期:1991.11
Regie- and chemospecific deallyloxycarbonylative aldol reaction of allyl(or -lie) α,α-disubstituted β-keto carboxylate with aldehyde was effectively promoted by Ni0 (NiCl2(PPh3)2–Zn), in which the allyloxycarbonyl group (–COOCH2CH=CH2) was replaced to 1-hydroxyalkyl group(–CH(OH)R, R = alkyl, vinyl, aryl) under mild reaction conditions.
在温和的反应条件下,Ni0(NiCl2(PPh3)2-Zn)能有效促进烯丙氧基羰基(-COOCH2CH=CH2)被置换为 1-羟基烷基(-CH(OH)R,R = 烷基、乙烯基、芳基)与醛的烯丙基(或-lie)α,α-二取代的β-酮羧酸酯的脱烯丙基羰基醛反应。