Preparation of 3,4,5-Trisubstituted Oxazolones by Pd-Catalyzed Coupling of <i>N</i>-Alkynyl <i>tert</i>-Butyloxycarbamates with Aryl Halides and Related Electrophiles
作者:Zenghui Lu、Weijian Cui、Siyuan Xia、Yihui Bai、Fang Luo、Gangguo Zhu
DOI:10.1021/jo301794w
日期:2012.11.2
oxazolones has been achieved by the coupling of N-alkynyl tert-butyloxycarbamates with aryl halides and related electrophiles, which involves an oxidative addition followed by oxypalladation/reductive elimination. The reaction provides a convenient access to diversely substituted oxazolones in satisfactory yields and shows good functional group compatibility.
通过将N-炔基叔丁氧基氨基甲酸酯与芳基卤化物和相关的亲电试剂偶联,已经获得了一种新型的钯催化的3,4,5-三取代的恶唑酮组装方法,该方法涉及氧化加成,然后进行氧化钯/还原消除。该反应以令人满意的产率方便地获得了各种取代的恶唑酮,并显示出良好的官能团相容性。