S-coordinated DMSO as ligands. The air/moisture stable complexes 3a and 3b were employed as efficient catalysts for the Suzuki–Miyaura cross-coupling reaction of several aryl halides. The coupled products of these reactions were obtained in good to excellent yields and purity, with short reaction times and low catalyst loading. Also a theoretical study on the structure and nature of the Pd–C bond in complex 4
摘要由
二甲基硫醚与2-
溴-3'-
甲氧基苯乙酮反应合成了新的sulf盐[SMe 2 CH 2 C(O)C 6 H 4-m -OCH 3] Br(1)。用10%的NaOH进一步处理,得到α-酮稳定的
硫内鎓盐SMe 2 C(H)C(O)C 6 H 4 -m -OCH 3(2)。该
配体与二
氯(
1,5-环辛二烯)
钯(II)配合物[PdCl 2(cod)]以2:1的比例反应,得到新的Cα配位配合物顺-和反-[PdCl 2 (SMe 2 C(H)C(O)C 6 H 4-m -OCH 3)2](3a和3b)。通过元素分析,IR,1 H,13 C NMR和质谱对所得化合物进行表征。由于络合物3a和3b不溶于大多数有机溶剂,因此我们选择
DMSO作为NMR光谱学的合适溶剂。上述溶液的结晶导致形成单晶。X射线分析结果表明,配合物3a发生了
配体置换反应,配合物[PdCl 2(SMe 2 C(H)C(O)C 6 H 4-m