Issue 6, 2016

Novel transition bimetal–organic frameworks: recyclable catalyst for the oxidative coupling of primary amines to imines at mild conditions

Abstract

A novel type of transition bimetal–organic frameworks was described as a heterogeneous catalyst for the oxidative coupling of amines to imines under mild conditions, which was easily synthesized by the coordination assembly of manganese(II) and cobalt(II) with 1,3,5-benzenetricarboxylic acid (H3BTC) for the first time. The metal–organic framework material was characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, thermogravimetry and N2 sorption. As an environmentally benign heterogeneous catalyst, the catalytic ability of the metal–organic framework material was then detected to be excellent for the tert-butyl hydroperoxide (TBHP) promoted direct oxidative coupling of benzylamines to imines in excellent yields (up to 100%) in methanol for 3 h. More importantly, it could be recycled up to six runs, while still maintaining its high catalytic activity.

Graphical abstract: Novel transition bimetal–organic frameworks: recyclable catalyst for the oxidative coupling of primary amines to imines at mild conditions

Supplementary files

Article information

Article type
Paper
Submitted
14 Dec 2015
Accepted
15 Apr 2016
First published
18 Apr 2016

New J. Chem., 2016,40, 5531-5536

Novel transition bimetal–organic frameworks: recyclable catalyst for the oxidative coupling of primary amines to imines at mild conditions

D. Ge, G. Qu, X. Li, K. Geng, X. Cao and H. Gu, New J. Chem., 2016, 40, 5531 DOI: 10.1039/C5NJ03544A

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