Pd(OAc)<sub>2</sub>-Catalyzed Carbonylative Coupling of Aryl Iodide with Ortho-Haloamines in Water
作者:Pawan J. Tambade、Yogesh P. Patil、Ziyauddin S. Qureshi、Kishor P. Dhake、Bhalchandra M. Bhanage
DOI:10.1080/00397911.2010.523155
日期:2012.1.15
Abstract The carbonylative cross coupling of aryliodide with ortho-haloaniline to ortho-haloanilide usingphosphine-freePd(OAc)2 catalyst in water as a reaction medium has been studied. The present protocol facilitated the reaction of o-haloanilines with a wide variety of hindered and functionalized aryliodides, affording good yields of the desired products. The protocol was also extended for the
The irdium-catalyzed intramolecular arylcarbon-hetero cross-coupling reactions with o-haloarylamides or o-haloarylamidine have been effectively achieved using KOAc and just 1 mol% catalyst. The [Ir(cod)Cl]2 was proved to be more potential for smoothly assembling functional structures benzimidazoles, benzoxazoles and benzothiazoles, which was superior to Cu- and Pd-catalyzed systems. Simultaneously
Green, efficient and large-scale synthesis of benzimidazoles, benzoxazoles and benzothiazoles derivatives using ligand-free cobalt-nanoparticles: as potential anti-estrogen breast cancer agents, and study of their interactions with estrogen receptor by molecular docking
作者:Abdol R. Hajipour、Zahra Khorsandi、Maryam Mortazavi、Hossein Farrokhpour
DOI:10.1039/c5ra22207a
日期:——
A facile and high yielding method for the synthesis of 2-aryl benzoxazoles, benzimidazole and benzothiazoles is reported employing cobalt oxide nanoparticles. The cobalt oxide nanoparticles were used as a convenient, green, easy available and highly efficient heterogeneous nano catalyst which promoted cyclization cross-coupling reactions without ligands and/or additives. This procedure has advantages
A comparative study of the catalytic activity of Co- and CoFe<sub>2</sub>O<sub>4</sub>-NPs in C–N and C–O bond formation: synthesis of benzimidazoles and benzoxazoles from o-haloanilides
作者:Abdol R. Hajipour、Zahra Khorsandi
DOI:10.1039/c6nj02293f
日期:——
ligand-free and mild reactionconditions. All the reactions resulted in moderate to excellent yields under the optimized reactionconditions; however, the reactions using Co-NPs as the catalyst were completed in relatively shorter reaction times. Furthermore, analysis showed that the reusability of the two catalytic systems is approximately comparable.
合成了钴铁氧体(CoFe 2 O 4 -NPs)和纯钴(Co-NPs)的纳米粒子,表征后,研究和比较了它们对脱卤分子内C-O和C-N键形成反应的催化活性。这些廉价而高效的催化剂能够创造出在绿色介质中合成苯并咪唑和苯并恶唑的新方法,且无配体且反应条件温和。在优化的反应条件下,所有反应均产生中等至极好的收率。然而,使用Co-NP作为催化剂的反应在相对较短的反应时间内完成。此外,分析表明,两个催化体系的可重复使用性大致相当。