Switchable imine and amine synthesis catalyzed by a tripodal ligand-supported well-defined cobaltcomplex is presented herein. A large variety of primary alcohols and amines were selectively converted to imines or amines in good to excellent yields. It is discovered that the base plays a crucial role on the selectivity. A catalytic amount of base leads to the imine formation, while an excess loading
The first example of a base‐metal‐catalyzed homogeneous hydrogenative coupling of nitriles and amines to selectively form secondary cross‐imines is reported. The reaction is catalyzed under mild conditions by a well‐defined (iPr‐PNP)Fe(H)Br(CO) pincer pre‐catalyst and catalytic tBuOK.
A clean sweep: Aryl and aliphatic imines can be synthesized directly and efficiently from alcohols and amines under mild, neutral conditions with the liberation of only molecular hydrogen and water (see scheme; R=isopropyl, tert‐butyl). This general, environmentally benign reaction is catalyzed by a de‐aromatized ruthenium PNP pincer complex (0.2 mol %), and can proceed in toluene under an inert atmosphere
一目了然:在温和的中性条件下,醇和胺可仅由分子氢和水释放(见方案; R =异丙基,叔丁基),可直接有效地由醇和胺合成芳基和脂族亚胺。这种一般的,对环境无害的反应是由脱芳香化的钌PNP钳形配合物(0.2摩尔%)催化的,可以在甲苯中于惰性气氛或空气中进行。
Reaction of primary aliphatic amines in oxidation systems containing sodium peroxydisulfate
作者:E. I. Troyanskii、V. A. Ioffe、I. V. Svitan'ko、G. I. Nikishin