在此,我们报告了协同铜/胺催化的直接α-苄基化羰基化合物与芳基乙酸的反应。这些反应代表了用于α-功能化羰基化合物的脱羧氧化协同过渡金属/烯胺催化的第一个例子。该工艺具有原料可得性、良好的官能团耐受性、温和的反应条件和良好至优异的收率。在稍微改变反应条件下,二苄基化产物以中等产率形成,并且一些产物通过酸催化的与吲哚的分子间环化反应转化为 1,2,3,4-四氢环戊[ b ]吲哚衍生物。此外,生物学研究表明,某些产品具有抗癌特性,可用于药物发现研究。
α-Functionalization of carbonylcompounds is an important reaction in synthetic chemistry. However, the development of novel synthetic strategies to realize this reaction is challenging. This study describes the α-indolmethylation of carbonylcompounds using cooperative copper, amine, and hydrogen-bond catalysis. This reaction provides a novel and efficient strategy for developing indolmethylated carbonyl compounds