Imines are selectively formed by coupling of nitriles and amines under mild hydrogen pressure. The reaction is catalyzed by a bipyridine-based PNN Ru(II) pincer complex and proceeds under mild, neutral conditions at 4 bar of H(2).
亚胺是通过在适度的氢气压力下将腈和胺偶联而选择性形成的。该反应由基于联吡啶的PNN Ru(II)夹杂物催化,并在4 bar H(2)的温和中性条件下进行。
Iron-Catalyzed Mild and Selective Hydrogenative Cross-Coupling of Nitriles and Amines To Form Secondary Aldimines
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.
Development and Cycloaddition Reactivity of a New Class of Pyridine-Based Mesoionic 1,3-Dipole
作者:Huseyin Erguven、David C. Leitch、Evan N. Keyzer、Bruce A. Arndtsen
DOI:10.1002/anie.201609726
日期:2017.5.22
structural characterization of a new type of mesoionic 1,3-dipole, which can be generated in the one-step reaction of imines with pyridine- or quinoline-based acid chlorides. Coupling the formation of these dipoles with alkyne cycloaddition can open a general and modular route to synthesize indolizines from combinations of available and diversifiable building blocks.