the cycloaddition reaction of diphenylnitrilimine on the 1,5-benzodiazepines has been studied. new molecules of triazolobenzodiazepines type have been isolated and characterized.

The cycloaddition reaction of diphenylnitrilimine on the 1,5-benzodiazepines has been studied. New molecules of triazolobenzodiazepines type have been isolated and characterized.

Hydride transfer is a critical elementary reaction step that spans biological catalysis, organic synthesis and energy conversion. Conventionally, hydride reactions are performed using (bio)molecular reagents under homogeneous conditions. Here we report conceptually distinct heterogeneous via the net electrocatalytic hydrogen reduction (HRR), which reduces H2 to hydrides. The proceeds by dissoci...

Platinum(II) salts in combination with copper salts and molecular oxygen catalyse an unprecedented intramolecular transfer of heteroatoms to alkenes to yield aminooxygenation products under sustainable conditions.

Rate constants for recombination and hole transfer during oxygen evolution at illuminated α-Fe(2)O(3) electrodes were measured by intensity-modulated photocurrent spectroscopy and found to be remarkably low. Treatment of the electrode with a Co(II) solution suppressed surface recombination but did not catalyse hole transfer. Intermediates in the reaction were detected spectroscopically.

A family of iron complexes of PNP pincer ligands are active catalysts for the conversion of glycerol to lactic acid with high activity and selectivity. These complexes also catalyse transfer hydrogenation reactions using glycerol as the hydrogen source.

Under suitable conditions, phosphatases generally catalyse phosphate-transfer reactions (Axelrod, 1956). When these enzymes catalyse the hydrolysis of compounds with an oxygen bridge it has been experimentally demonstrated with 180 that cleavage occurs between P and 0, as would be anticipated from the fact that they are phosphoryltransferring enzymes. By this criterion, adenosine triphosphatase...

in this paper a new method is introduced and investigated for removing the destabilizing effects of time-delay parameter in control loops. the concept of the method is taken from the knowledge concerning the dynamic behaviour of irrational transfer functions (ir-tf), which is discussed and investigated elswhere in frequency response domain and is explained briefly here. ir-tfs, which are well c...