Nitrogen–sulfur-doped carbon spheres (NS-CSs) were prepared from sucrose and thiourea through a simple hydrothermal process. NS-CSs were characterized by TEM, FTIR, TGA, XRD, Raman spectroscopy and elemental analyses. The results revealed that the synthesized carbon spheres have an amorphous structure with diameters of 300–500 nm. The microspherical carbon catalyst that is recyclable has been used in the synthesis of α-aminophosphonates derived from 2-aminobenzothiazoles. Three-component reaction was performed between 2-aminobenzothiazoles, aromatic aldehydes and trimethyl phosphite in the presence of NS-CSs as microorganocatalyst at 50 °C under solvent-free conditions in high yield.
通过简单的
水热法,以
蔗糖和
硫脲为原料制备了氮
硫掺杂碳球(NS-CSs)。通过
TEM、FTIR、TGA、XRD、拉曼光谱和元素分析对掺氮
硫碳球进行了表征。结果表明,合成的碳球具有直径为 300-500 nm 的无定形结构。这种可回收的微球碳催化剂被用于合成
2-氨基苯并噻唑衍生的 α-
氨基膦酸盐。在 50 ℃ 无溶剂条件下,以 NS-CSs 为微
生物催化剂,在
2-氨基苯并噻唑、芳香醛和亚
磷酸三甲酯之间进行了三组分反应,产率很高。