Copper-Chelating Azides for Efficient Click Conjugation Reactions in Complex Media
                                
                                    
                                        作者:Valentina Bevilacqua、Mathias King、Manon Chaumontet、Marc Nothisen、Sandra Gabillet、David Buisson、Céline Puente、Alain Wagner、Frédéric Taran                                    
                                    
                                        DOI:10.1002/anie.201310671
                                    
                                    
                                        日期:2014.6.2
                                    
                                    chelation‐assisted copper catalysis was employed for the development of new azides that display unprecedented reactivity in the copper(I)‐catalyzed azide–alkyne [3+2] cycloaddition (CuAAC) reaction. Azides that bear strong copper‐chelating moieties were synthesized; these functional groups allow the formation of azide copper complexes that react almost instantaneously with alkynes under diluted conditions. Efficient
                                    螯合辅助
铜催化的概念被用于开发新的
叠氮化物,这些新
叠氮化物在
铜(I)催化的
叠氮化物-
炔烃[3 + 2]环加成(Cu
AAC)反应中显示出前所未有的反应活性。合成了具有强
铜螯合部分的
叠氮化物;这些官能团允许形成
叠氮化物铜络合物,在稀释条件下,它们几乎可以瞬间与
炔烃反应。在低浓度和仅含一当量
铜的复杂介质中即可进行有效的连接,从而提高了Cu
AAC反应的
生物相容性。此外,这种点击反应通过荧光测量允许
生物活性化合物在活细胞内定位。