6-Di(pyridin-2-yl)-1,2,4,5-tetrazine (pytz) capped Pd(0) nanoparticles (TzPdNPs) as a catalyst in the Sonogashira coupling of aryl halides in aqueous medium with diminished homocoupling is reported. The methodology provides a facile route to obtain polyfunctional alkynes under ligand- and copper-free conditions. The procedure is also efficient for aryl chlorides.
3,6-二(
吡啶-2-基)-
1,2,4,5-四嗪(pytz)封端的Pd(0)纳米颗粒(TzPdNPs)作为在
水性介质中芳基卤化物在Sonogashira偶联中的催化剂,且均偶联力降低被报道。该方法提供了在无
配体和无
铜条件下获得多官能
炔烃的简便途径。该方法对于芳基
氯化物也是有效的。