作者:Greg Petruncio、Synah Elahi-Mohassel、Michael Girgis、Mikell Paige
DOI:10.1016/j.tetlet.2021.153516
日期:2021.12
benzyl halides and sulfonates imparts unique reactivity at the benzylic carbon atom. Photoredox sp3-sp3 cross-coupling proved ineffective for coupling p-methoxybenzyl chloride (PMBCl), leading to a new strategy for the sp3-sp3 cross-coupling of benzyl halides and sulfonates. This strategy involved LiCl-accelerated synthesis of a Grignard reagent followed by a copper-catalyzed cross-coupling. The conditions
苄基卤化物和磺酸盐中的芳环赋予苄基碳原子独特的反应性。Photoredox sp 3 -sp 3交叉偶联被证明对偶联对甲氧基苄基氯 (PMBCl)无效,导致了苄基卤化物和磺酸盐的 sp 3 -sp 3交叉偶联的新策略。该策略涉及 LiCl 加速格氏试剂的合成,然后是铜催化的交叉偶联。由于 PMBCl 的特殊反应性,该条件对 PMBCl 工作良好,但其他苄基溴或磺酸盐反应不佳。