Oxoammonium Salt-Mediated Regioselective Vicinal Dioxidation of Alkenes: Relying on Transient and Persistent Nitroxides
作者:Yang Zheng、Qing-Yun Yang、Lu-Yan Wu、Xin-Yue Zhu、Ming-Jing Ge、Hao Yang、Shi-Yu Liu、Fei Chen
DOI:10.1021/acs.orglett.1c03196
日期:2021.11.5
and regioselective vicinal dioxidation of alkenes under transition metal and organic peroxide free conditions has been developed. This approach uses N-hydroxyphthalimide and its analogues as the transient nitroxyl-radical precursors and 2,2,6,6-tetramethylpiperidine-1-oxoammonium tetrafluoroborate (TEMPO+BF4–) as the oxidant as well as the source of persistent nitroxide. By employing this method, multifarious
已经开发出一种在过渡金属和有机过氧化物游离条件下烯烃的新型、易于处理和区域选择性的邻位二氧化反应。该方法使用N-羟基邻苯二甲酰亚胺及其类似物作为瞬态硝酰基自由基前体,使用 2,2,6,6-四甲基哌啶-1-氧代四氟硼酸铵 (TEMPO + BF 4 – ) 作为氧化剂和持久性硝基氧的来源。通过采用这种方法,可以从简单的烯烃和复杂的生物活性分子衍生物有效地合成多种结构上重要的二氧化产物。