Efficient Suzuki-Miyaura Coupling of Deactivated Aryl Chlorides Catalyzed by an Oxime Palladacycle
作者:Diego Alonso、Carmen Nájera、J. Cívicos
DOI:10.1055/s-0029-1218285
日期:2009.11
Aryl chlorides are efficiently cross-coupled with aryl boronic acids using 0.25 mol% of 4,4′-dichlorobenzophenone oxime derived palladacycle as precatalyst in the presence of 1 mol% of [HP(t-Bu)3]BF4 as ligand, K2CO3 as base, TBAOH as additive, and DMF as solvent under conventional thermal or MW irradiation conditions. Under these simple reaction conditions a wide array of deactivated and hindered aryl chlorides react cleanly to afford in high yields functionalized biaryl derivatives.
在 [HP(t-Bu)3]BF4 作为配体、K2CO3 作为碱、TBAOH 作为添加剂和 DMF 作为溶剂的存在下,使用 0.25 mol% 的 4,4'-二氯苯甲酮肟衍生的钯杂环作为预催化剂,芳基氯可以高效地与芳基硼酸进行交叉偶联反应。在常规热条件或微波辐射条件下,这些简单的反应条件下,大量难以活化的和受阻的芳基氯可以干净地反应,以高产率生成功能化的联芳基衍生物。