Green Chemistry (Impact Factor: 8.02). 12/2012; 14(8). DOI: 10.1039/C2GC35452G
Zinc phthalocyanine with PEG-400 was established as a green catalytic system for chemo and regioselective reduction of aromatic nitro compounds to corresponding amines. A large range of reducible functional groups such as acid, amide, ester, halogen, lactone, nitrile, N-benzyl, O-benzyl, hydroxy and heterocycles were well tolerated. Direct synthe-sis of benzotriazole form o-dinitrobenzene was achieved for the first time. The present catalytic system was successfully employed for reduction of carbonyl and ester com-pounds to corresponding alcohols and reductive amination of benzaldehydes with prima-ry amines to form corresponding secondary amines. Remarkable advantages of present catalytic method includes low loading of metal, avoidance of toxic ligand and high iso-lated yields. Catalyst was recyclable up to four times without any loss of selectivity and activity.
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[Show abstract][Hide abstract]ABSTRACT: A direct one-pot synthetic approach is described wherein cobalt(II) phthalocyanine (CoPc) catalyzed reductive amination
of 2-carboxybenzaldehyde, followed by intramolecular amidation afforded N-substituted isoindolinones. The method
used diphenylsilane as reducing agent in ethanol. High chemoselectivity with excellent yield was obtained in most of the
Full-text · Article · Jan 2012 · Australian Journal of Chemistry
[Show abstract][Hide abstract]ABSTRACT: AlCl3 has been employed for highly chemoselective reductive amination of carbonyl compounds in
ethanol using polymethylhydrosiloxane as an inexpensive, stable and safe reducing agent without an inert
atmosphere. A large range of functional groups such as nitro, carboxylic acid, acetyl, nitrile, halogen,
methoxy, alkene and heterocycles were well tolerated. AlCl3 also catalyzed tandem amination–amidation
of 2-carboxybenzaldehyde with different amines to afford N-substituted isoindolinones. The catalyst can
be recycled at least three times without any significant effect on activity and selectivity.
[Show abstract][Hide abstract]ABSTRACT: The electrochemical reduction approach has been suggested as a promising method for detoxification of chlorine-containing aromatic hydrocarbons. In this study, the electrocatalytic dechlorination of atrazine was studied by using a non-noble catalyst, binuclear iron phthalocyanine coated onto multi-walled carbon nanotubes (bi-FePc/MWNT). Both experimental and theoretical results indicate that dechlorination of atrazine occurs rapidly on bi-FePc/MWNT electrode. The reaction depends on the adsorption of the chlorinated organic compound on the electrode surface and the reaction rate with hydroxy. By liquid chromatography–tandem mass spectrometer technique, the dechlorination product of atrazine can be assigned to 2-hydroxy-4-ethylamino-6-isopropylamino-1,3,5-triazine, which could be disposed by more convenient and economic biodegradation method.