An approach for gram-scale synthesis of uniform Cu2O nanocubes by a one-pot polyol process was used. The CuO hollow nanostructures were prepared by adding aqueous ammonia solutions with Cu2O nanocube colloidal solutions. CuO hollow nanospheres on acetylene black (CuO/AB), were synthesized and used for the catalytic [3+2] cycloaddition of azides with terminal alkynes to provide products in good yields with high regioselectivity. The CuO/AB was readily separated by centrifugation and could be reused ten times under the present reaction conditions without any loss of catalytic activity. Transition metals loaded onto acetylene black are useful reagents for a wide variety of organic transformations. Moreover, these heterogeneous systems are promising industrial catalysts.
一种通过一锅多元醇法制备均匀
Cu2O纳米立方体克级合成的方法被采用。通过添加
氨水溶液至 纳米立方体胶体溶液中,制备了CuO空心纳米结构。合成了负载在
乙炔黑上的CuO空心纳米球(CuO/AB),并用于催化
叠氮化物与末端
炔烃的[3+2]环加成反应,提供了高产率、高区域选择性的产物。CuO/AB可通过离心分离轻易地回收,并在当前反应条件下可以重复使用十次而不会损失催化活性。负载在
乙炔黑上的过渡
金属对于多种有机转化反应是有用的试剂。此外,这些非均相体系是有前景的工业催化剂。