Gold-Catalyzed Regioselective Hydration of Propargyl Acetates Assisted by a Neighboring Carbonyl Group: Access to α-Acyloxy Methyl Ketones and Synthesis of (±)-Actinopolymorphol B
作者:Nayan Ghosh、Sanatan Nayak、Akhila K. Sahoo
DOI:10.1021/jo101995g
日期:2011.1.21
suitable to perform hydration of TMS-substituted propargyl acetates, even though it requires prolonged reaction time for completion. Stereointegrity of the propargylic acetate is preserved during the hydration. The robustness of the system is successfully demonstrated through gram scale preparation of the product in nearly quantitative yield. The common α-acyloxy methylketone is transformed to 1,2-diol
Palladium-catalyzed Oxidation of Benzyl Ketones to Synthesis of α-Acetoxy Ketones Using Molecular Oxygen
作者:Zheng-Wang Chen、Dong-Nai Ye、Min Ye、Liang-Xian Liu
DOI:10.1246/cl.130694
日期:2013.11.5
An efficient procedure for the preparation of α-acetoxy ketone derivatives by palladium-catalyzed oxidation reactions employing molecularoxygen as the sole oxidant has been reported. A variety of ...
A heterogeneous gold(I)-catalyzed regioselective hydration of propargyl acetates toward α-acyloxy methyl ketones
作者:Yingying Du、Fang Yao、Rongli Zhang、Mingzhong Cai
DOI:10.1016/j.jorganchem.2020.121136
日期:2020.3
heterogeneous gold(I)-catalyzed regioselective hydration of propargylacetates has been developed that proceeds smoothly in 1,4-dioxane at room temperature in the presence of 1 mol% diphenylphosphine-modified MCM-41-anchored gold(I) complex [Ph2P-MCM-41-AuSbF6] as catalyst and provides an efficient and practical approach for the synthesis of a variety of α-acyloxy methyl ketones with high atom economy