56950-09-5Relevant articles and documents
Synthesis of alkynyltellurides mediated by K3PO4 and DMSO
Do Sacramento, Manoela,Menezes, Larissa,Goldani, Bruna,Perin, Gelson,Silva, Marcio S.,Barcellos, Thiago,Alves, Diego
supporting information, p. 11091 - 11098 (2019/07/31)
In the present work, a simple method for the synthesis of alkynyltellurides is described by the reactions of terminal alkynes with diorganyl ditellurides in the presence of a catalytic amount of K3PO4. In both substrates, it was possible to vary the aryl and alkyl groups, obtaining the products of interest in short reaction times and in yields ranging from 30 to 93%. This methodology, different from those already reported in the literature, has the advantage of using a catalytic amount of a weak base and no use of metallic catalysts.
METHOD OF PREPARING CORE-SHELL COPPER NANOPARTICLES IMMOBILIZED ON ACTIVATED CARBON AND METHOD OF PREPARING CHALCOGENIDE COMPOUND USING NANOPARTICLES AS CATALYST
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Paragraph 0073, (2016/11/14)
Disclosed herein is a method of preparing a Cu/Cu2O core-shell copper nanoparticle catalyst having high catalytic activity from [Cu3(BTC)2] and NaBH4 via a simple chemical reduction method. Also disclosed is a method of preparing a chalcogenide compound by using the nanoparticle catalyst as a heterogeneous catalyst in a cross-coupling reaction between a chalcogenide precursor compound and a boron-containing compound. The disclosed cross-coupling reaction is performed via a simple process, and the disclosed nanoparticle catalyst is compatible with various substrates under mild reaction conditions and exhibits excellent recyclability without a reduction in catalytic activity.
Magnetite (Fe3O4) nanoparticles: An efficient and recoverable catalyst for the synthesis of alkynyl chalcogenides (selenides and tellurides) from terminal acetylenes and diorganyl dichalcogenides
Godoi, Marcelo,Liz, Daiane G.,Ricardo, Eduardo W.,Rocha, Manuela S.T.,Azeredo, Juliano B.,Braga, Antonio L.
, p. 3349 - 3354 (2014/05/06)
We present herein a new and efficient methodology for the synthesis of alkynyl chalcogenides from terminal acetylenes and diorganyl dichalcogenides, catalyzed by Fe3O4 nanoparticles. This new approach provided the desired products in good to excellent yields. Moreover, the catalyst was easily recoverable using an external magnet and reused for further experiments without loss of catalytic activity.
