Oxoammonium Salt‐Mediated Vicinal Oxyazidation of Alkenes with NaN
            <sub>3</sub>
            : Access to
            <i>β</i>
            ‐Aminooxy Azides
                                
                                    
                                        作者:Fei Chen、Yu‐Ting Tang、Xin‐Ru Li、Yan‐Yan Duan、Chao‐Xing Chen、Yang Zheng                                    
                                    
                                        DOI:10.1002/adsc.202100783
                                    
                                    
                                        日期:2021.11.23
                                    
                                    AbstractAn approach to the vicinal oxyazidation of alkenes has been achieved under mild and transition metal‐free conditions. This method utilizes NaN3 as the azidation agent and 2,2,6,6‐tetramethylpiperidine‐1‐oxoammonium tetrafluoroborate (TEMPO+BF4−) as the single‐electron oxidant as well as the oxygen source. By using this protocol, various β‐aminooxy azides were synthesized and several complex bioactive molecules were functionalized.magnified image