Efficient Suzuki–Miyaura Coupling Reactions between Lithium Alkynyltrimethylborates and Aryl Chlorides
作者:Gloria Hernández Torres、Sabine Choppin、Françoise Colobert
DOI:10.1002/ejoc.200500697
日期:2006.3
The Pd-catalysed alkynylation of alkynylboronic esters (generated in situ) with various aryl chlorides in the presence of Pd2(dba)3, the sterically hindered dihydroimidazolium salt 4 as the precatalyst and CsF is reported. Under these conditions, electron-poor and electron-rich aryl chlorides undergo efficient cross-coupling reactions. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
报道了在 Pd2(dba)3、位阻二氢咪唑鎓盐 4 作为预催化剂和 CsF 存在下,炔基硼酸酯(原位生成)与各种芳基氯化物的 Pd 催化炔基化反应。在这些条件下,缺电子和富电子芳基氯化物发生有效的交叉偶联反应。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)