Heck Reactions with Ultralow Concentration of Transition Metals under Microwave Irradiation

• 作者: Fengyu Zhao Haiyang Cheng Hongjun Wang
• 来源期刊: 绿色与可持续化学(英文)
• 学科: 化学
• 关键词: HECK Reaction MICROWAVE IRRADIATION ULTRALOW Concentration Transition Metal CATALYSTS Water
• 年，卷（期）: 2014,（1）
• 页码范围: 1-6
• 页数: 6页
• 分类号: O6

摘要

The Heck coupling reactions of aryl halides and olefins were performed under the microwave assistance. Interestingly, the ultralow concentration of transition metals (in ppb) coming from the reactants could catalyze the Heck coupling reactions under microwave irradiation, without addition of any catalysts, ligands and phase-transfer agents. The influences of bases, solvents and temperature were discussed, and the reaction rate was enhanced largely in the mixed solvents of NMP and water due to the solubility of base in water.