Oxidative kinetic resolution of heterocyclic sulfoxides with a porphyrin-inspired manganese complex by hydrogen peroxide
作者:Jinchuang Yang、Lianyue Wang、Ying Lv、Ning Li、Yue An、Shuang Gao
DOI:10.1016/j.tetlet.2017.12.012
日期:2018.1
reported here the low loading porphyrin-inspired high-valent manganese (IV)-oxo complex was applied in oxidative kinetic resolution (OKR) of racemic heterocyclic sulfoxides using the environmentally benign hydrogen peroxide for the first time. This approach allows for rapid OKR (0.5 h) of a variety of racemic sulfoxides (including pyridine, pyrimidine, pyrazine, thiazole, benzothiazole, thiophene) in
我们已经成功地在此成功报道了首次使用环境友好的过氧化氢将低负荷卟啉启发的高价锰(IV)-氧杂配合物用于外消旋杂环亚砜的氧化动力学拆分(OKR)。这种方法可以快速进行各种外消旋亚砜(包括吡啶,嘧啶,吡嗪,噻唑,苯并噻唑,噻吩)的OKR(0.5小时),对映选择性(高达> 99%ee),同时以高收率产生相应的砜(高达80%)。催化体系对具有羟基的亚砜底物也显示出无与伦比的化学选择性,其中仅亚砜基被氧化。该方法的实际用途已在克级亚砜的OKR中得到证明。