نتایج جستجو برای: amination
تعداد نتایج: 1883 فیلتر نتایج به سال:
Correction for 'Resonance Raman spectroscopy as an in situ probe for monitoring catalytic events in a Ru-porphyrin mediated amination reaction' by Paolo Zardi et al., Analyst, 2016, 141, 3050-3058.
A simple NaOMe catalyst provides superior accessibility to a wide variety of functionalized amides including peptides through direct amination of esters in an atom-economical and environmentally benign way.
Rhodium-bound nitrenoids are trapped by tethered allenes generating acyloxy-enamines, aminocyclopropanes, and methylene aziridines. The aminocyclopropanes undergo substitution of the acetoxy group by a variety of nucleophiles.
Expedited synthesis of ?-amino acids by single-step enantioselective ?-amination of carboxylic acids
Abstract The conversion of C?H bonds to C?N offers a sustainable and economical strategy for the synthesis nitrogen-containing compounds. However, challenges regarding control regio- stereoselectivity currently limit broad applicability intermolecular C( sp 3 )?H amination reactions. We address these restrictions by directed nitrene-mediated insertion using metal-coordinating functional group. ...
Copper amine oxidases (CAOs) catalyse the oxidative de-amination of biogenic amines which are ubiquitous compounds essential for cell growth and proliferation. The enzymes are homodimers containing both topaquinone and a Cu(II) ions as cofactors at the active site of each subunit. After extraction and purification of chickpea (cicer arietinum) amine oxidase by chromatoghraphy, Km and Vmax of th...
Herein we have identified an optimal catalyst, Pd1Ag1.7, for the tandem reductive amination between nitroarenes and aldehydes (selectivity > 93%). Key to the success is the ability to control the compositions of the investigational Pd1-xAgx (x = 0-1) catalysts, as well as the clear composition dependent activity/selectivity trend observed in this study. This catalyst features a wide substrate s...
Fabricating crosslinked radiation-grafted anion-exchange membranes using a diamine in the amination synthesis step leads to better permselectivity-resistance balance compared use of divinylbenzene grafting step.
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