Synthesis of Heterocyclic Allenes via Palladium-Catalyzed Hydride-Transfer Reaction of Propargylic Amines
作者:Hiroyuki Nakamura、Shinya Onagi、Takaya Kamakura
DOI:10.1021/jo0479664
日期:2005.3.1
propargyldiisopropylamine by the Sonogashira coupling reaction, underwent the allene transformation reaction in the presence of Pd2(dba)3·CHCl3 catalyst (2.5 mol %) and 1,2-bis[bis(pentafluorophenyl)phosphino]ethane (10 mol %) at 100 °C in CHCl3, giving the corresponding heterocyclic allenes in good to high yields via the palladium-catalyzed hydride-transfer reaction.
通过Sonogashira偶联反应很容易地由杂环溴化物和炔丙基二异丙胺制得的含杂环的丙炔二异丙胺,在Pd 2(dba)3 ·CHCl 3催化剂(2.5 mol%)和1,2-bis的存在下进行丙二烯转化反应。在100℃下于CHCl 3中的[双(五氟苯基)膦基]乙烷(10mol%),通过钯催化的氢化物转移反应以高至高收率得到相应的杂环烯。