Rapid Syntheses of Heteroaryl-Substituted Imidazo[1,5-<i>a</i>]indole and Pyrrolo[1,2-<i>c</i>]imidazole via Aerobic C2–H Functionalizations
作者:Wei-Jun Kong、Xingrong Chen、Mingming Wang、Hui-Xiong Dai、Jin-Quan Yu
DOI:10.1021/acs.orglett.7b03596
日期:2018.1.5
Here we report an aerobic Pd(0) catalyzed C2–H functionalization of indoles and pyrroles with tethered N-methoxylamide as the directing group. A Pd(0)-initiated mechanism overcomes the directing or poisoning effect from a wide range of heterocycles including pyridine, pyrimidine, and thiazole. The imidazo[1,5-a]indole products are transformed to bioactive analogs after one-step manipulations, demonstrating
在这里我们报告了一个有氧的Pd(0)催化的吲哚和吡咯的C2-H官能化,其中N-甲氧基酰胺为连接基团。Pd(0)引发的机制克服了包括吡啶,嘧啶和噻唑在内的各种杂环的直接或中毒作用。一步操作后,咪唑并[1,5- a ]吲哚产物转化为生物活性类似物,证明了该反应在药物发现中的潜在效用。