Imine-Palladacycles as Phosphine-Free Precatalysts for Low-Temperature Suzuki–Miyaura Synthesis of Nucleoside Analogues in Aqueous Media
作者:José Luis Serrano、Luis García、José Pérez、Pedro Lozano、Jevy Correia、Santosh Kori、Anant R. Kapdi、Yogesh S. Sanghvi
DOI:10.1021/acs.organomet.0c00580
日期:2020.12.28
tested, and bridging acetates were cleaved by reaction with neutral PPh3, yielding the corresponding mononuclear derivatives [Pd(R-C^N-SO3Na)(AcO)(PPh3)] (R = H (4), MeO (5), Cl (6)). Analytical and spectroscopic techniques confirmed the proposed formulas and reactivities reported for complexes 1–6. Structural characterization by X-ray diffraction of single crystals grown from samples of 4 and 6 produced
通式[Pd(RC ^ N-SO 3 Na)(μ-AcO)} 2 ](R = H(1),OMe(2),Cl(3))报道了结合有金属化的4-(N-亚苄基氨基)苯磺酸钠部分。这些配合物已被证明是用于合成功能化核苷类似物的极佳无膦催化剂,涉及在纯净水中5-碘-2'-脱氧尿苷与不同芳基硼酸的低温Suzuki-Miyaura偶联。的潜在的1 - 3还测试了合成前体,并通过与中性PPh 3反应裂解了桥接的乙酸盐,得到了相应的单核衍生物[Pd(RC ^ N-SO 3 Na)(AcO)(PPh 3)](R = H(4) ,MeO(5),Cl(6))。分析和光谱技术证实所提出的公式和反应性报道的络合物1 - 6。通过X射线衍射对从4和6样品中生长的单晶进行结构表征可产生出乎意料但有价值的结晶介导化合物4cm和6cm 这也支持此处介绍的结果。