- Synthesis, spectral and structural characterization of cobalt(III) dithiocarbamato complexes: Catalytic application for the solvent free enamination reaction
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The syntheses, spectral, structural and catalytic properties of some new cobalt(III) complexes, [Co(mpcdt)3] (1), [Co(ppcdt)3] (2) and [Co(mppcdt)3]·0.25CHCl3 (3), derived from 4-methyl piperazine-1-carbodithioate (mpcdt), 4-phenyl piperazine-1-carbodithioate (ppcdt) and 4-(2-methoxyphenyl) piperazine-1-carbodithioate (mppcdt) have been described. A series of β-enaminoesters and β-enaminones were obtained in about 90% yield by the reactions of β-ketoesters and 1,3-diketones with aliphatic and aromatic amines using 1-2 mol% of the above cobalt(III) complexes as catalysts and these have been characterized by NMR, GC-MS and X-ray crystallography. Complexes 1, 2 and 3 are stabilized by intermolecular C-H?S interactions, leading to the formation of supramolecular architectures. Thermogravimetric analysis of complexes 1 and 2 have been investigated by TG-DTA, which indicate that cobalt sulfide is formed as the final product.
- Bharati, Pooja,Bharti,Nath,Bharty,Butcher,Singh
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p. 375 - 385
(2015/11/03)
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- Regioselective reduction of 2-perfluoroalkanoylcyclohexane-1,3-diones and their enamino derivatives
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Ionic hydrogenation of 2-perfluoroalkanoylcyclohexane-1,3-diones and their endocyclic enamino derivatives containing a secondary amino group by the action of triethylsilane in trifluoroacetic acid in the presence of a catalytic amount of lithium perchlora
- Khlebnikova,Isakova,Baranovskii,Lakhvich
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experimental part
p. 672 - 679
(2011/08/02)
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- POLYMERIZATION PROCESS WITH LIVING CHARACTERISTICS AND POLYMERS MADE THEREFROM
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A free radical polymerization process suitable for synthesizing polymers is disclosed. The process utilizes novel sulfur based chain transfer agents and is widely compatible over a range of monomers and reaction conditions. Novel polymers having low polydispersity and predictably specific polymer architecture and molecular weight are produced by the process. The polymers produced by the process are suitable for use as binders in automotive OEM and refinish coatings.
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- Reactions of bisbenzalacetone with functionalisd enamines
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Reaction of the cross-conjugated olefin, bisbenzalacetone 2 with different functionalised enamines, results in the formation of different types of products. Crotonaldehyde dienamine 9 gives the cyclohexene derivative 10; isomeric mixture of isophorone die
- Rao, T. Vedagiriswani,Ravishankar,Baskaran,Trivedi
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p. 546 - 551
(2007/10/03)
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