Here, an efficient leaving group-activated methylene alcohol strategy for the preparation of primary propargyl alcohols from terminal alkynes by employing the bulk industrial product rongalite as the C1 unit has been described. The reaction avoids the low-temperature reaction conditions and inconvenient lithium reagents required for the classical method of preparing primary propargylic alcohols. Preliminary
本文描述了一种有效的离去基团活化亚甲基醇策略,通过使用大宗工业产品
雕白粉作为 C1 单元,从末端
炔烃制备伯炔
丙醇。该反应避免了制备炔
丙醇的经典方法所需的低温反应条件和不方便的
锂试剂。初步机理研究表明,该反应可能不是通过
甲醛中间体进行,而是通过SO 2 -作为离去基团活化,末端
炔烃对
雕白粉的碳原子进行直接亲核攻击。