‘Click’ ligand for ‘click’ chemistry: (1-(4-methoxybenzyl)-1-H-1,2,3-triazol-4-yl)methanol (MBHTM) accelerated copper-catalyzed [3+2] azide–alkyne cycloaddition (CuAAC) at low catalyst loading
作者:Rajesh H. Tale、Venkatesh B. Gopula、Gopal K. Toradmal
DOI:10.1016/j.tetlet.2015.09.010
日期:2015.10
1,2,3-triazol-4-yl)methanol (MBHTM) synthesized itself by ‘click’ chemistry shown to promote the dramatic rate enhancement of copper catalyze azide–alkyne cycloaddition (CuAAC) at low catalyst loading to give diverse 1,4-disustituted 1,2,3-triazoles in high to excellent yields under mild conditions. Using higher catalyst and ligand loading, excellent and 49% yield of the corresponding 1,2,3 triazole
易于获得,具有成本效益,非常稳定且易于调节的基于1,2,3-三唑的配体,(1-(4-甲氧基苄基)-1 - H -1,2,3-三唑-4-基)甲醇(MBHTM)通过“点击”化学反应自行合成的结果表明,在低催化剂负载量下,铜催化叠氮化物-炔烃环加成反应(CuAAC)的速率大大提高,在温和的条件下,可以高产率或优异产率得到各种1,4-废弃的1,2,3-三唑情况。使用较高的催化剂和配体负载量,分别在不到一个小时和几分钟的时间内即可获得相应的1,2,3三唑产物优异的收率和49%的收率,这表明该反应可用于开发快速“点击”反应协议。