作者:Jie-Ping Wan、Chunping Wang、Rihui Zhou、Yunyun Liu
DOI:10.1039/c2ra21632a
日期:——
A sustainable catalyst system consisted of H2O/ethyl lactate (EL), Pd(OAc)2 and K2CO3 has been developed as a generally applicable protocol for SuzukiâMiyaura reactions using various aryl bromides and iodides to incorporate arylboronic acids under ligand-free conditions. This protocol is advantageous owing to the employment of water and non-toxic, biomass available ethyl lactate as green media. In addition, as a co-solvent with water, ethyl lactate displayed evident superiority over conventional polar organic solvents such as DMF, DMSO and dioxane etc., which implied the additional potential function of EL as a ligand in these reactions.
开发了一种可持续的催化体系,由H2O/乳酸乙酯(EL)、Pd(OAc)2和K2CO3组成,作为一种普遍适用的方案,用于在无配体条件下使用各种芳基溴和碘化物进行铃木-宫浦反应,以引入芳基硼酸。这一方案具有优势,因为它采用了水和无毒、可从生物质中获得的乳酸乙酯作为绿色溶剂。此外,作为水的共溶剂,乳酸乙酯在性能上明显优于传统极性有机溶剂,如DMF、DMSO和二氧六环等,这意味着EL在这些反应中还具有额外的潜在配体功能。