We present a new protocol that allows for the synthesis of 2,5-disubstituted tetrazolesvia the direct coupling of NâH free tetrazoles and low toxic boronic acids in the presence of only a catalytic amount of Cu2O (5 mol%) as catalyst and 1 atm of environmentally benign O2 as oxidant, without the need for other additives. This method represents a simple, green, and atom-efficient synthesis of 2,5-disubstituted tetrazoles.
我们提出了一种新方案,通过自由的
四唑(N-H型的
四唑)与低毒性的
硼酸直接耦合,在仅5 mol%的
Cu2O催化剂和1大气压的环境友好型O2作为氧化剂的条件下,无需其他添加剂,实现了2,5-二取代
四唑的合成。这一方法简单、环保且原子效率高,为2,5-二取代
四唑的合成提供了一条新途径。