Synthesis of Functionalized Hydroquinones via [Cp*RuCl<sub>2</sub>]<sub>2</sub>-Catalyzed Cocyclization of Alkynes, α,β-Unsaturated Carbonyl Compounds, and Carbon Monoxide
作者:Takahide Fukuyama、Ryo Yamaura、Yuki Higashibeppu、Takahiro Okamura、Ilhyong Ryu、Teruyuki Kondo、Take-aki Mitsudo
DOI:10.1021/ol052291s
日期:2005.12.1
[reaction: see text] Catalytic [2 + 2 + 1 + 1] cocyclization reaction of an alkyne, an alkene, and two molecules of carbon monoxide, leading to functionalized hydroquinones, was studied. Using [Cp*RuCl2]2 as a catalyst, we found that a variety of electron-deficient alkenes, such as alpha,beta-unsaturated ketones, esters, amides, and nitriles, can be employed as an alkene coupling partner to give the
[反应:参见正文]研究了炔烃,烯烃和两个一氧化碳分子催化[2 + 2 + 1 + 1]的共环化反应,从而生成功能化的对苯二酚。使用[Cp * RuCl2] 2作为催化剂,我们发现可以使用多种缺电子烯烃,例如α,β-不饱和酮,酯,酰胺和腈作为烯烃偶联伙伴,得到相应的对苯二酚。