Τίτλος:
Synthesis of a palladium complex with a β-d-glucopyranosyl-thiosemicarbazone and its application in the Suzuki-Miyaura coupling of aryl bromides with phenylboronic acid
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
A palladium(II) complex with a known phosphane-free β-d-glucopyranosyl-thiosemicarbazone ligand has been prepared and characterized by spectroscopic studies. The ligand is bonded to the metal in a bidentate coordination mode via the azomethine nitrogen and the thiolate sulfur in the dimeric form. The application of this complex on the Suzuki-Miyaura coupling of aryl bromides with phenylboronic acid in DMF/K2CO3 at 100 °C for 24 h in air, using 0.1 mol% of palladium, afforded the corresponding biaryls in 54-91% yield. Crabtree's test provided evidence that the real catalyst is mainly heterogeneous rather than homogeneous. © 2015 Elsevier B.V. All rights reserved.
Συγγραφείς:
Tenchiu, A.-C.
Ventouri, I.-K.
Ntasi, G.
Palles, D.
Kokotos, G.
Kovala-Demertzi, D.
Kostas, I.D.
Περιοδικό:
INORGANICA CHIMICA ACTA
Εκδότης:
ELSEVIER SEQUOIA S.A.
Λέξεις-κλειδιά:
Carbohydrates; Catalysis; Ligands; Metal halides; Organic acids; Phenols; Spectroscopic analysis, Bidentate coordination mode; Free ligands; Palladium complexes; Phenylboronic acids; Spectroscopic studies; Suzuki-Miyaura coupling; Suzuki-Miyaura cross-coupling; Thiosemicarbazones, Palladium compounds
DOI:
10.1016/j.ica.2015.06.019
