A new convenient and general one-step route for preparing azines by treating aromtic aldehydes and semicarbazide with anhydrous zinc chloride as catalyst is described.

吖是用途很广泛的合物,如作染料,光敏物质,聚合单体,另外它们是加成反应的母体合物。

This thesis mainly introduced that ureas and semicarbazides were synthesized by oxidation of corresponding thioureas and thiosemicarbazides using 30% peroxide as oxidant.

本文主要介绍了以30%浓度的双水作剂硫脲、氨基硫脲来制备相应的脲和氨基脲类合物。