Scope of Successive C–H Functionalizations of the Methyl Group in 3-Picolines: Intramolecular Carbonylation of Arenes to the Metal-Free Synthesis of 4-Azafluorenones
作者:Joydev K. Laha、Krupal P. Jethava、Sagarkumar Patel
DOI:10.1021/acs.orglett.5b03071
日期:2015.12.4
in 2-aryl-3-picolines via oxidative C–H functionalizations of the methyl group has been developed, providing an expedient synthesis of 4-azafluorenones. Distinct from the current literature wherein methylarenes have been used as acylating agents, 2-aryl-3-picolines in this study are transformed into aldehydes, which give 4-azafluorenones upon rapid intramolecular acylation. The study demonstrates the
已经开发了一种无过渡金属的t - BuOOH介导的2-芳基-3-甲基吡啶中的芳烃分子内羰基化,该甲基化是通过甲基的CH-H官能化来实现的,可方便地合成4-氮杂芴酮。与现有文献不同,其中甲基芳烃已被用作酰化剂,本研究中的2-芳基-3-甲基吡啶被转化为醛,在快速分子内酰化后可生成4-氮杂芴酮。该研究证明了利用甲基作为潜在的羰基官能度的芳烃分子内羰基化的第一个例子。