Ruthenium-Catalyzed Propargylation of Aromatic Compounds with Propargylic Alcohols
作者:Youichi Inada、Masato Yoshikawa、Marilyn Daisy Milton、Yoshiaki Nishibayashi、Sakae Uemura
DOI:10.1002/ejoc.200500858
日期:2006.2
Reactions of propargylic alcohols bearing a terminal alkyne moiety with aromatic compounds in the presence of a catalytic amount of thiolate-bridged diruthenium complexes give the corresponding propargylated aromatic compounds in high yields with complete selectivity. Intramolecular reactions of propargylic alcohols bearing an aromatic moiety proceed smoothly to afford the cyclized products in high
在催化量的硫醇桥二钌配合物存在下,带有末端炔部分的炔丙醇与芳族化合物的反应以高产率和完全选择性得到相应的炔丙基化芳族化合物。带有芳族部分的炔丙醇的分子内反应顺利进行,以高产率和完全选择性提供环化产物。钌-亚丙叉基络合物 [Cp*RuCl(μ2-SMe)2RuCp*(=C=C=CHPh)]BF4 (Cp* = η5-C5Me5) 与 10 当量的化学计量反应。2-甲基呋喃以 34% 的产率生成 2-甲基-5-(1-苯基-2-丙炔基)呋喃,表明这些催化反应是通过钌-亚烯基中间体进行的。该反应被认为是芳香族化合物被钌稳定的炔丙基阳离子的亲电取代。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)