Showing papers on "Ammonium tetrathiomolybdate published in 2005"
TL;DR: Progress-of-substrate reaction kinetics and activity restoration with a dilution of the ATTM indicated that the copper-chelating ATTM may bind slowly but reversibly to the active site without competition with substrate, and the enzyme-ATTM complex subsequently undergoes reversible conformational change, leading to complete inactivation of the tyrosinase activity.
23 citations
TL;DR: In this paper, the potential application of molybdenum suphides supported on SiMCM-41 and AIMCM-41 materials in the thiophene hydrodesulfurization was studied.
Abstract: In this work was studied the potential application of molybdenum suphides supported on SiMCM-41 and A1MCM-41 materials in the thiophene hydrodesulfurization The SiMCM-41 and AIMCM-41 materials were synthesized by hydrothermal method using cethyltrimethylammonium bromide as template The deposition of the active HDS species was performed by solvent excess impregnation of ammonium tetrathiomolybdate salt over the supports followed by calcination Cobalt was used as promoter in order to obtain a Co/(Co+Mo) atomic ratio of 03 The materials presented activity in thiophene HDS
6 citations
TL;DR: An efficient one-pot methodology for the synthesis of thioglycosides in excellent yields under neutral conditions through the use of benzyltriethylammonium tetrathiomolybdate$[{(BnNEt_3)}_2MoS_4; 1]$ as a sulfur-transfer reagent has been developed.
Abstract: An efficient one-pot methodology for the synthesis of thioglycosides in excellent yields under neutral conditions through the use of benzyltriethylammonium tetrathiomolybdate
$[{(BnNEt_3)}_2MoS_4; 1]$ as a sulfur-transfer reagent has been developed. The reagent 1 reacts with sugar halides to give sugar disulfides, which then undergo reductive cleavage in situ to provide the corresponding thiolates, followed by Michael addition to give the corresponding thioglycosides. Further, the utility of this one-pot reaction in aqueous medium has been exemplified through the use of ammonium tetrathiomolybdate $[{(NH_4)}_2 MoS_4; 2]$. The application of this methodology has been extended to the synthesis of a variety of thiosugar analogues with excellent diastereoselectivity through inter and intramolecular reactions.