Bismuth-Catalyzed Intermolecular Hydroamination of 1,3-Dienes with Carbamates, Sulfonamides, and Carboxamides
作者:Hongbo Qin、Noriyuki Yamagiwa、Shigeki Matsunaga、Masakatsu Shibasaki
DOI:10.1021/ja056112d
日期:2006.2.1
A Bi(OTf)(3)/Cu(CH(3)CN)(4)PF(6) system efficiently promoted intermolecular 1:1 hydroamination of 1,3-dienes with various carbamates, sulfonamides, and carboxamides to afford allylic amines in good yield (up to 96%). Reaction proceeded with 0.5-10 mol % catalyst loading at 25-100 degrees C (generally at 50 degrees C) in 1,4-dioxane within 24 h. The Bi(OTf)(3)/Cu(CH(3)CN)(4)PF(6) system constitutes
Bi(OTf)(3)/Cu(CH(3)CN)(4)PF(6) 系统有效地促进了 1,3-二烯与各种氨基甲酸酯、磺酰胺和甲酰胺的分子间 1:1 加氢胺化,得到烯丙胺收率良好(高达 96%)。反应在 25-100 摄氏度(通常在 50 摄氏度)下在 1,4-二恶烷中以 0.5-10 mol% 的催化剂负载在 24 小时内进行。Bi(OTf)(3)/Cu(CH(3)CN)(4)PF(6) 系统构成了一系列分子间加氢胺化催化的新入口。还讨论了机理研究和假定的反应机制。