mild, reagent-cyanide-free, and efficient synthesis of O-phosphinoyl-protected cyanohydrins from readily available α-substituted malononitriles was realized using diarylphosphine oxides in the presence of O2. Mechanistic studies indicated that in addition to the initial aerobic oxidation of the malononitrile derivative notable features of this process include the formation of a tetrahedral intermediate
                                    使用二芳基膦氧化物在O 2的存在下,实现了轻度,无
氰化物的反应,并由易于获得的α-取代的
丙二酸高效合成了O-膦酰基保护的
氰醇。机理研究表明,除了
丙二腈衍
生物的初始有氧氧化外,该过程的显着特征还包括四面体中间体的形成和随后的分子内重排。可以通过醇解或通过用D
IBAL-H还原来除去膦酰基保护基。