Catalyst-Free and Transition-Metal-Free Approach to 1,2-Diketones via Aerobic Alkyne Oxidation
作者:Duyi Shen、Hongyan Wang、Yanan Zheng、Xinjing Zhu、Peiwei Gong、Bin Wang、Jinmao You、Yulei Zhao、Mianran Chao
DOI:10.1021/acs.joc.0c03010
日期:2021.4.2
A catalyst-free and transition-metal-free method for the synthesis of 1,2-diketones from aerobic alkyne oxidation was reported. The oxidation of various internal alkynes, especially more challenging aryl-alkyl acetylenes, proceeded smoothly with inexpensive, easily handled, and commercially available potassium persulfate and an ambient air balloon, achieving the corresponding 1,2-diketones with up
报道了由好氧炔烃氧化合成1,2-二酮的无催化剂和无过渡金属的方法。各种内部炔烃(尤其是更具挑战性的芳基-烷基乙炔)的氧化反应进行得很顺利,且价格低廉,易于处理且可商购获得的过硫酸钾和环境气球,以高达85%的收率实现了相应的1,2-二酮。同时,机理研究表明它是一个自由基过程,1,2-二酮中的两个氧原子最有可能分别来自过硫酸盐和分子氧,而不是水。