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Oxidative cross dehydrogenative coupling directed carbamates synthesis using Cu(II) pincer complex as active catalyst under mild reaction condition by Krishna Mohan Das; Arunabha Thakur is a Chemistry article available to read on EtoBox.
What is Oxidative cross dehydrogenative coupling directed carbamates synthesis using Cu(II) pincer complex as active catalyst under mild reaction condition about?
Development of an air-stable and cheap transition metal-based catalyst for the formation of carbamates via the cross-coupling reaction of various 2-carbonyl substituted phenolic derivatives or 1,3-diketo derivatives with N,Ndisubstituted formamides (C(sp 2 ) O bond formation) under mild conditions is the key focus of synthetic chemists. In this context, we have developed a novel benzothiazole appended 2,6-di picolinamide-based Cu(II) complex for the facile generation of carbamates at a slightly elevated temperature (50 C) with a short reaction time and low catalyst loading (0.5 mol%) for the first time. The synthesized complex was well characterized by ultraviolet-visible, infrared, electron paramagnetic resonance spectroscopy, cyclic voltammetry, highresolution mass spectrometry (HRMS), as well as by single crystal X-ray diffraction analysis. A wide range of aromatic carbamates was synthesized using complex 1 in good/excellent yield with decent functional group tolerance under mild conditions. Control experiments suggest that the reaction proceeds via the radical mechanism, and the formation of radical-mediated intermediates was confirmed by the gas chromatography (GC), GCMS and H
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It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- Krishna Mohan Das; Arunabha Thakur
- Publisher
- Wiley
- Published
- 2023
- Language
- EN
- Field
- Chemistry (Physical Sciences)