Ruthenium-Catalyzed Coupling of Aromatic Carbon-Hydrogen Bonds in Aromatic Imidates with Olefins
作者:Fumitoshi Kakiuchi、Taisuke Sato、Masakazu Yamauchi、Naoto Chatani、Shinji Murai
DOI:10.1246/cl.1999.19
日期:1999.1
directed by N,O-heterocyclic substituents. The Ru3(CO)12-catalyzed reaction of 4,4-dimethyl-2-(2-methylphenyl)-5,6-dihydro-4H-1,3-oxazine (1) with triethoxyvinylsilane gave a mixture of the corresponding 1:1 addition product (3a) and its olefinic analogue (3b) in good yields in ca. a 1:1 ratio. In the case of the reaction of 4,4-dimethyl-2-(2-methylphenyl)-4,5-dihydro-1,3-oxazole (7), the olefinic analogue
催化 CH/烯烃偶联可由 N,O-杂环取代基引导。Ru3(CO)12-催化的 4,4-二甲基-2-(2-甲基苯基)-5,6-二氢-4H-1,3-恶嗪 (1) 与三乙氧基乙烯基硅烷的反应得到相应 1 的混合物: 1 加成产物 (3a) 及其烯烃类似物 (3b) 以良好的产率约 1:1 的比例。在 4,4-二甲基-2-(2-甲基苯基)-4,5-二氢-1,3-恶唑 (7) 的反应情况下,偶联产物 (8a) 的烯烃类似物 (8b) 是作为主要产品获得。讨论了新反应途径的存在。