Recoverable Palladium-Catalyzed Carbon-Carbon Bond Forming Reactions under Thermomorphic Mode: Stille and Suzuki-Miyaura Reactions
作者:Eskedar Tessema、Vijayanath Elakkat、Chiao-Fan Chiu、Zong-Lin Tsai、Ka Long Chan、Chia-Rui Shen、Han-Chang Su、Norman Lu
DOI:10.3390/molecules26051414
日期:——
the solvent at 120–150 °C. Additionally, recycling and electronic effect studies of 2a–c were also carried out for Suzuki-Miyaura reaction of phenylboronic acid derivatives, 4-X-C6H4-B(OH)2, (X = H or Ph) with aryl halide, 4-Y-C6H4-Z, (Y = CN, H or OCH3; Z = I or Br) in dimethylformamide (DMF) at 135–150 °C. At the end of each cycle, the product mixtures were cooled to lower temperature (e.g., −10 °C)
[PdCl 2(CH 3 CN)2 ]与bis-4,4'-(R f CH 2 OCH 2)-2,2'-bpy(1a–d)的反应,其中R f = n -C 11在存在二氯甲烷(CH 2 Cl)的情况下分别为F 23(a),n -C 10 F 21(b),n -C 9 F 19(c)和n -C 8 F 17(d)2)合成了Pd络合物[PdCl 2 [4,4'-bis-(R f CH 2 OCH 2)-2,2'-bpy](2a–d)。选择了Pd催化的乙烯基三丁基锡与芳基卤化物的Stille芳基化反应,以证明在120–150°C下使用NMP(N-甲基-2-吡咯烷酮)作为溶剂,以2a为催化剂循环使用的可行性。此外,还对苯硼酸衍生物4-XC 6 H 4 -B(OH)2(X = H或Ph)与卤代芳基4的Suzuki-Miyaura反应进行了2a–c的回收利用和电子效应研究。-YC 6 H 4-Z,(Y =