Chlorine at an sp 2 -carbon in steroids has been shown to be reactive in Suzuki-Miyaura cross-coupling reactions with either Ni or Pd catalysts. The coupling of analogous 6-bromo derivatives has also been demonstrated to be applicable to a wider scope of substrates. The Suzuki-Miyaura arylation of 6-bromo-Δ 3 , 5 -steroid enol ethers with subsequent hydrolysis is a useful route to 6-arylated steroids
类
固醇中 sp 2 -碳上的
氯已被证明在与 Ni 或 Pd 催化剂的 Suzuki-Miyaura 交叉偶联反应中具有反应性。类似的 6-
溴衍
生物的偶联也已被证明适用于更广泛的底物。6-
溴-Δ 3 , 5-甾体烯醇醚的 Suzuki-Miyaura 芳基化以及随后的
水解是获得在饱和碳上带有芳基的 6-芳基化甾体的有用途径。