RuHCl(CO)(PPh<sub>3</sub>)<sub>3</sub>-Catalyzed Reductive Dimerization of α,β-Unsaturated Aldehydes Leading to α-Hydroxymethyl Ketones
作者:Ilhyong Ryu、Takashi Doi、Takahide Fukuyama、Satoshi Minamino
DOI:10.1055/s-2006-951518
日期:2006.11
The reductive dimerization α,β-unsaturated aldehydes to give saturated ketones was achieved using RuHCl(CO)(PPh3)3 as a catalyst in the presence of secondary alcohols as hydrogen source. The reaction is likely to proceed via the hydroruthenation of α,β-unsaturated aldehydes followed by aldol reaction of the resultant ruthenium enolates with α,β-unsaturated aldehydes to give unsaturated α-hydroxymethyl ketones, which undergo transfer hydrogenation to give α-hydroxymethyl ketones.
使用RuHCl(CO)(PPh3)3作为催化剂,在存在二次醇作为氢源的条件下,实现了α,β-不饱和醛的还原二聚化以生成饱和酮。该反应可能通过对α,β-不饱和醛的氢铑化反应进行,然后是生成的铑烯醇盐与α,β-不饱和醛的醛醇反应,形成不饱和的α-羟基甲基酮,随后经历转移氢化反应生成α-羟基甲基酮。