Preparation and palladium-catalysed cross-coupling reactions of 3- and 4-tributylstannylfuran-2(5H)-ones
作者:Gregory J. Hollingworth、Gemma Perkins、Joseph Sweeney
DOI:10.1039/p19960001913
日期:——
Stannylfuranones 1 and 2 were prepared by ipso radical desulfurative stannylation of phenylsulfanylfuranones 3 and 16. Compounds 1 and 2 underwent Stille coupling reactions with aryl iodides to give 3- and 4-arylfuran-2(5H)-ones.
Reductive Carbonylation of Acetylenes under Water-Gas Shift Reaction Conditions. Synthethis of Furan-2(5H)-ones from Terminal and Non-substituted Acetylenes
Under water-gas reaction conditions terminal and non-substituted acetylenes are selectively converted into furan-2(5H)-ones by catalysis with a rhodium carbonyl cluster.
在水-气反应条件下,末端和未取代的乙炔通过羰基铑簇的催化选择性转化为呋喃-2(5H)-酮。
Preparation and reactions of 3,4-bisstannyl-2(5H)furanones
作者:Neil B Carter、Ross Mabon、Alexandre M.E Richecœur、J.B Sweeney
DOI:10.1016/s0040-4020(02)00995-x
日期:2002.10
Bistributylstannyl-2(5H)-furanone 4a has been prepared from 3-(tetrahydropyran-2-yl)oxy but-2-ynoate and shown to exhibit good selectivity in its Stille reactions with a range of halogenated compounds, leading to 4-substituted-3-stannyl-2(5H)-furanones, in generally moderate yield. Under certain reaction conditions, doubly substituted products were also isolated from the reactions. The 3,4-bistrimethylstannyl
Room Temperature Nickel(0)-Catalyzed Suzuki-Miyaura Cross-Couplings of Activated Alkenyl Tosylates: Efficient Synthesis of 4-Substituted Coumarins and 4-Substituted 2(<i>5H</i>)- Furanones
作者:Zhen-Yu Tang、Qiao-Sheng Hu
DOI:10.1002/adsc.200404150
日期:2004.12
Roomtemperaturenickel(0)/tricyclohexylphosphine [Ni(0)/PCy3]-catalyzed Suzuki–Miyaura cross-couplings of 4-(p-toluenesulfonyloxy)coumarins and 4-(p-toluenesulfonyloxy)-2(5H)-furanone with arylboronicacids are described in this communcation. Our study shows that activated alkenyl tosylates possess higher activities than aryl tosylates in the Suzuki–Miyaura cross-couplings. The mild reaction conditions
Gold-Catalyzed Cascade Oxidative Cyclization and Arylation of Allenoates
作者:Rui Zhang、Qin Xu、Kai Chen、Peng Gu、Min Shi
DOI:10.1002/ejoc.201300896
日期:2013.11
was found to be effective for the cascadeoxidativearylation and cyclization of allenoates with arylboronic acids to give the corresponding cyclic adducts in moderate yields. This reaction system constitutes a new method for the synthesis of β-aryl-γ-butenolides under mild conditions. Based on the previous mechanistic studies, a proposed AuI/AuIII redox catalytic cycle has been outlined.