Merging strain-release and copper catalysis: the selective ring-opening cross-coupling of 1,2-oxazetidines with boronic acids
作者:Ji-Hang Xu、Zi-Kui Liu、Yan-Liu Tang、Yang Gao、Xiao-Qiang Hu
DOI:10.1039/d2cc00461e
日期:——
first time by copper catalysis. Unlike the known electrophilic oxygen reactivity in coupling with organometallic reagents, 1,2-oxazetidines were utilized as formaldimine precursors in this protocol. Remarkable features of this reaction include simple operation, inexpensive catalyst, broad scope and high regioselectivity, delivering a wide array of aminomethylation products. The practicality of this reaction
通过铜催化首次实现了 1,2-oxazetidines 与现成的芳基硼酸的前所未有的开环交叉偶联。与已知的与有机金属试剂偶联的亲电氧反应性不同,1,2-oxazetidines 在该协议中被用作福尔马二亚胺前体。该反应的显着特点包括操作简单、催化剂价格低廉、范围广和区域选择性高,可提供多种氨基甲基化产物。该反应的实用性在所得产物的一步下游转化为合成重要分子和生物活性酸的后期修饰中得到验证。