Disulfide-Directed C-H Hydroxylation for Synthesis of Sulfonyl Diphenyl Sulfides and 2-(Phenylthio)phenols with Oxygen as Oxidant
作者:Long Wang、Yi-Bi Xie、Nian-Yu Huang、Nuo-Nuo Zhang、De-Jiang Li、Yu-Lin Hu、Ming-Guo Liu、Dong-Sheng Li
DOI:10.1002/adsc.201600861
日期:2017.3.6
sulfur). Here, the disulfide‐directed C–H activation for thew synthesis of sulfonyl diphenyl sulfides was realized for the first time by a copper‐catalyzed, tandem, one‐step C–S coupling/hydroxylation of disulfides and arylboronic acids with oxygen as the oxidant. This method provides a mild and easy method for the synthesis of sulfonyl diphenyl sulfides and 2‐(phenylthio)phenol derivatives and avoids producing
与N,O和P作为导向功能原子相比,由于已知的原因,将含硫原子的导向基团用于过渡金属催化的CHH活化要困难得多(某些金属催化剂容易被硫中毒)。在这里,通过铜催化的,串联的,一步式的二硫化物和芳基硼酸与氧作为氧化剂的C-S偶联/羟基化,首次实现了用于磺酰二苯硫醚合成的二硫化物导向的CH活化。 。该方法为合成磺酰基二苯硫醚和2-(苯硫基)苯酚衍生物提供了一种温和而简便的方法,并且避免了在空气条件和高温下产生亚砜和砜的方法。