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The syntheses and X-ray diffraction structures of water soluble copper( II ) compounds containing the Schiff base ligand 2-(2-pyridylmethyleneamino)benzenesulfonate (L â ),viz. the dinuclear bis-μ 1,1 -azido [CuL(μ 1,1 -N 3 )] 2 ( 1 ) and bis-μ ...
With the activation of P(OEt) 3 and I 2 , carboxylic acids can smoothly react with various primary and secondary amines, affording a series of amides, including peptides without racemization. 31 P NMR spectroscopy studies showed that carboxylic phosphoric...
The first total synthesis of spirobacillene A, an indole alkaloid isolated from Lysinibacillus fusiformis, is reported. A Lewis acid mediated spirocyclization of an anisole derivative onto a tethered ynone was used as a key step, drawing inspiration from a...
The effectiveness of immobilization of functionalized carbon nanotubes into chitosan using different cross-linking agents has been evaluated. The cross-linkers used were glyoxal (GO), glutaraldehyde (GA), epichlorohydrin (ECH), and...
We developed a series of nonchelated monodentate benzimidazole nickel complexes, bis[2-(2,6-difluorophenyl)-1H-benzimidazole]nickel(II) dibromide (1), bis[1-(2,6-difluorobenzyl)-2-(2,6-difluorophenyl)-1H-benzimidazole]nickel(II) dibromide (2),...
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Methods for the large-scale synthesis of thieno[3,2-b]thiophene [including a catalytic vapour-phase reaction (at 550 ðC) between 2-(2-thienyl)ethanol and carbon disulfide], its 2-carboxylic acid and its 3,6-dibromo and 2,3,5,6-tetrabromo derivatives are...
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Two mononuclear Re(v) complexes were synthesized using two different O, N, N coordinating Schiff base ligands. The X-ray structure and catalytic properties of the complexes are investigated and the electronic structure and absorption spectra were also...
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A convenient route to the enantiomers of 4-TIPS-3-butyn-2-ol of >95% enantiomeric purity by reduction of the ynone precursor 4 with the Noyori N-tosyl-1,2-diphenylethylenediamineruthenium cymene catalyst is described. The mesylate derivative of the (S)...
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A computational and conceptual density-functional study has been performed on various [3 + 1] complexes of both Re(V) and Tc(V). The fully optimized complexes chloro(3-thiapentane-1,5-dithiolato)oxorhenium(V) and...
Malonic acid derivatives undergo unusually mild decarboxylation when treated with N,Nâ²-carbonyldiimidazole (CDI) at room temperature to generate the carbonyl imidazole moiety in high yield, which can be reacted further with a variety of nucleophiles in an...
With manganocenes as starting materials, stable mononuclear paramagnetic alkynyl and vinylidene and binuclear bis(vinylidene) and bis(carbyne) complexes with (RC 5 H 4 )Mn(dmpe) fragments (R = H, Me; dmpe = 1,2-bis(dimethylphosphino)ethane) have been prepared...
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