Synthesis of 2,5-diaryloxazoles through van Leusen reaction and copper-mediated direct arylation
作者:Tomoki Yoshizumi、Tetsuya Satoh、Koji Hirano、Daisuke Matsuo、Akihiro Orita、Junzo Otera、Masahiro Miura
DOI:10.1016/j.tetlet.2009.02.039
日期:2009.7
van Leusen reaction, with various aryl iodides is effectively promoted by a system of CuI combined with PPh3 and Na2CO3 as a ligand and a base, respectively, in DMF to produce the corresponding 2,5-diaryloxazoles in good yields.
通过van Leusen反应制得的5-芳基恶唑与各种芳基碘的直接芳基化反应,是通过CuI与PPh 3和Na 2 CO 3分别作为配体和碱在DMF中结合形成的体系有效地促进的。相应的2,5-二芳基恶唑,收率高。