报道了硫酸钴-乙酸在室温、无溶剂条件下催化醇和酚的四氢吡喃化反应。硫酸钴-乙酸作为协同催化体系,二者缺一不可。与传统催化剂相比,新催化体系的催化活性最好.反应结束后,硫酸钴经简单相分离可回收,重复使用多次催化活性无明显下降。提出了可能的催化反应机理. Reported that cobalt sulfate-acetic acid catalyzed the tetrahydropyranation of alcohols and phenols under solvent-free conditions at room temperature. Cobalt sulfate - acetic acid as a synergistic catalytic system, both indispensable. Compared with the traditional catalyst, the catalytic activity of the new catalytic system is the best.After the reaction, the cobalt sulfate can be recovered by simple phase separation, and the catalytic activity is not obviously decreased after repeated use for multiple times. The possible catalytic reaction mechanism is proposed.