Three‐Component Palladium‐Catalyzed Tandem Suzuki‐Miyaura/Allylic Substitution: A Regioselective Synthesis of (2‐Arylallyl) Aryl Sulfones
作者:Marina Bellido、Martí Garçon、Xavier Verdaguer、Antoni Riera
DOI:10.1002/adsc.202400181
日期:——
obtain meaningful results. Most interestingly, the products of oxidative addition of aromatic C−X (X=Cl, I) bonds to [Pd(tBuXPhos)] (cat2) have been previously isolated and characterized by X-ray by the Nozaki and Buchwald groups.48 These structures reveal a trans disposition between the phosphorus and halide atoms. Figure 3 Open in figure viewerPowerPoint Calculated pathways (ΔG; in kcal ⋅ mol−1) for the
开发了一种制备(2-芳基烯丙基)芳基砜的一锅法 Pd 催化串联工艺。该策略基于硼酸、亚磺酸钠和乙酸 2-溴代烯丙酯的模块化组装。该反应对末端烯烃具有完全区域选择性,生成(2-芳基烯丙基)芳基(或烷基)砜,产率范围为 56% 至 93%。控制实验与 DFT 计算相结合,提出了串联反应的合理反应机制。该方法的实用性已通过不对称氢化对市售药物阿普司特和几种天然产物的正式合成得到证明。使用市售的 UbaPHOX 铱络合物,获得了 ee 高达 98% 的手性 β-甲基砜