Stereoselective Synthesis of <i>cis</i>-2-Ene-1,4-diones via Aerobic Oxidation of Substituted Furans Catalyzed by ABNO/HNO<sub>3</sub>
作者:Liqun Yang、Jingyang Wang、Yue Wang、Xiaotong Li、Wei Liu、Zhaoguo Zhang、Xiaomin Xie
DOI:10.1021/acs.joc.1c00613
日期:2021.11.5
We report a highly efficient and selective catalytic system, ABNO (9-azabicyclo-[3.3.1]nonane N-oxyl)/HNO3, for the aerobic oxidation of substituted furans to cis-2-ene-1,4-diones under mild reaction conditions using oxygen as the oxidant. The catalyst system is amenable to various substituted (mon-, di-, and tri-) furans and tolerates diverse functional groups, including cyano, nitro, naphthyl, ketone
我们报告了一种高效和选择性催化体系 ABNO (9-azabicyclo-[3.3.1] nonane N -oxyl)/HNO 3,用于将取代的呋喃有氧氧化为顺式-2-ene-1,4-二酮以氧气为氧化剂,反应条件温和。该催化剂体系适用于各种取代的(单-、二-和三-)呋喃,并耐受多种官能团,包括氰基、硝基、萘基、酮、酯、杂环,甚至甲酰基。基于对照和18个O标记实验,提出了氧化的可能机理。