Palladium-catalyzed cross-coupling reactions of arylmetal compounds with β-substituted α-iodoenones and a cyclohexyl triflate
作者:Folkert Boße、Ashok Rao Tunoori、AndréJ. Niestroj、Oliver Gronwald、Martin E. Maier
DOI:10.1016/0040-4020(96)00489-9
日期:1996.7
Electron-rich arylstannanes were found to couple with α-iodoenones in the presence of Pd2(dba)3·CHCl3, a weak-coordinating ligand [AsPh3 or Pd(o-tol)3] and CuI (0.75-1.0 equiv) to give sterically hindered α-arylcyclohexenones 15–20. In addition, compounds 19, 22 and 23 were prepared by Suzuki coupling reactions of the cyclohexyl derivatives 7c,f and 11, respectively, with the arylboronic acid 21.
发现在存在弱配位配体[AsPh 3或Pd(邻甲苯基)3 ]和CuI(0.75-1.0当量)的Pd 2(dba)3 ·CHCl 3的存在下,富电子芳基斯坦酮与α-碘代烯偶联。)可得到空间受阻的α-芳基环己烯酮15–20。另外,分别通过环己基衍生物7c,f和11与芳基硼酸21的Suzuki偶联反应制备化合物19、22和23。