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Six different fluoroarenes were submitted to the same transformations. Direct deprotonation with alkyllithium or lithium dialkylamide as reagents and subsequent carboxylation afforded acids. These included 2,6-difluorobenzoic acid, 3,6-difluoro-2-iodobenzo ...
The work presents the effect of K-doping on V/Ti-oxides taking into account: the surface acid–base properties and the structure of surface vanadia species in respect to the catalyst performance and deactivation. The structure of active surface species dete ...
The invention relates to a novel class of ligands, complexes comprising such ligands and a metal ion, and adducts of these metal complexes and a macromolecule. Pharmaceutical compositions and methods of making and using the ligand-metal complexes are also ...
Upon reacting P4S3 with AgAl(hfip)4 and AgAl(pftb)4 [hfip = OC(H)(CF3)2; pftb = OC(CF3)3], the compds. Ag(P4S3)Al(hfip)4 (1) and Ag(P4S3)2+[Al(pftb)4]- (2) formed in CS2 or CS2/CH2Cl2 soln., resp. Compds. 1 and 2 were characterized by single-crystal x-ray ...
The reaction of itaconic anhydride with N2:CHCO2Et or Ph2C:N2 gave the expected spiro-derivs., which spontaneously rearranged; specifically, the adduct from Ph2C:N2 loses a dinitrogen mol., yielding a spirocyclopropane related to the known 5-azaspiro[2.4]h ...
A deprotonation study was performed using 2,3,5-trichloropyridine, 3,5-dichloro-2-fluoropyridine, and 5-chloro-2,3-difluoropyridine as the substrates. Upon reaction with lithium diisopropylamide (LDA), deprotonation occurred exclusively at the 4-position. ...
Thin boron-doped diamond films were prepd. by HF CVD (hot filament chem. vapor deposition technique) on conductive p-Si substrate (Si/diamond). The morphol. of these Si/diamond electrodes was investigated by SEM and Raman spectroscopy. The electrochem. beh ...
The 1,10-decanedioic acid-1,3,5,7-tetraazatricyclo[3.3.1.1(3,7)]decane (1/1) system, C10H18O4.C6H12N4, was studied at 215 (2) K. Its analysis provides important information with regard to the long-standing acid-carboxylate controversy in the urotropine-alk ...
The reactions of the cluster complexes [Pt-3(mu -Co)(3)L-3], where L = PPh3 1a, PPh(2)Bz 1b and PCy3 1c, with activated mono-olefins have been studied under preparative and equilibrium conditions. At low temperature the olefins react quantitatively giving ...
The cross-aldolization of (-)-(1S,4R,5R,6R)-6-endo-chloro-5-exo-(phenylseleno)-7-oxabicyclo[2.2.1] heptan-2-one ((-)-25) and of(+)-(3aR,4aR,7aR,7bS)- ((+)-26) and(-)-(3aS,4aS,7aS,7bR)-3a,4a,7a,7b-tetrahydro-6,6-dimethyl[1,3]dioxolo [4,5]furo[2,3-d]isoxazol ...
