Cleavage of a Carbon−Carbon Triple Bond via Gold-Catalyzed Cascade Cyclization/Oxidative Cleavage Reactions of (<i>Z</i>)-Enynols with Molecular Oxygen
作者:Yuanhong Liu、Feijie Song、Shenghai Guo
DOI:10.1021/ja062610q
日期:2006.9.1
A highly efficient carbon-carbon triple bondcleavage reaction of (Z)-enynols was developed, which offered a new route to highly substituted butenolides. The methodology is realized by a tandem reaction using a single gold(I) catalyst, which could catalyze different reactions of cyclization/oxidativecleavage in the same vessel.
Gold-Catalyzed Cyclization of (<i>Z</i>)-2-En-4-yn-1-ols: Highly Efficient Synthesis of Fully Substituted Dihydrofurans and Furans
作者:Yuanhong Liu、Feijie Song、Zhiquan Song、Meina Liu、Bin Yan
DOI:10.1021/ol052160r
日期:2005.11.1
[reaction: see text] The gold-catalyzed cyclization of (Z)-enynols offers an efficient and straightforward route to stereodefined (Z)-5-ylidene-2,5-dihydrofurans and fully substitutedfurans under extremely mild reaction conditions. Importantly, the results indicated that both the oxyauration and the proto-demetalation steps are highly stereoselective.
A general and efficient synthesis of substituted furans and dihydrofurans via gold-catalyzed cyclization of (Z)-2-en-4-yn-1-ols
作者:Xiangwei Du、Feijie Song、Yuhua Lu、Haoyi Chen、Yuanhong Liu
DOI:10.1016/j.tet.2008.11.109
日期:2009.2
A highlyefficient Au-catalyzed cyclization of (Z)-enynols that proceeds under mild reaction conditions has been developed. This methodology provides rapid access to substituted furans and stereodefined (Z)-5-ylidene-2,5-dihydrofurans in a regioselective manner from suitably substituted (Z)-2-en-4-yn-1-ols.
A facile approach to spirocyclic butenolides through cascade cyclization/oxidative cleavage reactions of (Z)-enynols catalyzed by gold under dioxygen atmosphere
作者:Feijie Song、Yuanhong Liu
DOI:10.1016/j.jorganchem.2008.10.046
日期:2009.2
A facile approach for the syntheses of spirocyclic butenolides through cascade cyclization/oxidative cleavage reactions of (Z)-enynols bearing cyclic substituents at the C-1 position catalyzed by gold under dioxygen atmosphere has been developed. A variety of substituted butenolides was constructed in a regioselective manner from suitably substituted (Z)-2-en-4-yn-1-ols. (Z)-Enynols substituted both