An efficient method for the addition of trimethylsilylcyanide (TMSCN) to aldehydes using dispersed NbF5 as the catalyst is described. Cyano transfer from TMSCN to aldehydes occurs within 10 minutes at room temperature in the presence of 0.5 mol% of NbF5 under solvent-free conditions giving cyanohydrins in excellent yields of over 95%. These conditions are extremely mild, simple and tolerate various functional groups.
本文介绍了一种使用分散 NbF5 作为催化剂将三甲基
硅氰化物 (TMSCN) 加成到醛中的高效方法。在无溶剂条件下,有 0.5 摩尔 5% 的 NbF5 存在时,TMSCN 与醛的
氰基转移在室温下 10 分钟内即可完成,
氰醇的收率高达 95% 以上。这些条件极其温和、简单,并可容忍各种官能团。