GRAPHICAL ABSTRACT ABSTRACT ZnFe2O4 nanoparticles were synthesized and used as recyclable magnetic catalyst in the solvent-free conversion of different epoxides to vicinal hydroxythiocyanates with NH4SCN at room temperature. The reactions were carried out by grinding in a mortar with perfect regioselectivity within short times (2-25 min) and with high to excellent yields (75–95%). The nanocatalyst was
图形摘要 摘要 ZnFe2O4 纳米颗粒被合成并用作可回收磁性催化剂,在室温下用NH4SCN 将不同
环氧化物无溶剂转化为邻位羟基
硫氰酸酯。反应是通过在研钵中研磨进行的,在短时间内(2-25 分钟)具有完美的区域选择性,并且具有高到极好的收率(75-95%)。使用外部磁
铁可以轻松分离纳米催化剂,并连续重复使用四个循环,而没有任何明显的效率或磁性损失。