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2‐hydroxyethyl‐substituted (NHC)PdI 2 (pyridine) (Pd‐PEPPSI) Complexes: Synthesis, Characterization and the Catalytic Activity in the Sonogashira Cross‐coupling Reaction
Author(s) -
Erdemir Fatoş,
Barut Celepci Duygu,
Aktaş Aydın,
Gök Yetkin
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201901033
Subject(s) - sonogashira coupling , phenylacetylene , pyridine , bromide , aryl , chemistry , palladium , carbene , coupling reaction , catalysis , polymer chemistry , medicinal chemistry , organic chemistry , alkyl
Here, new series of the 2‐hydroxyethyl‐substituted (NHC)PdI 2 (pyridine) (Pd‐PEPPSI) complexes have been synthesized. These complexes have been prepared from the 2‐hydroxyethyl‐substituted N ‐heterocyclic carbene (NHC) precursors, palladium chloride and pyridine. The synthesized Pd‐PEPPSI complexes have been characterized by using 1 H NMR, 13 C NMR, FTIR spectroscopy and elemental analysis techniques. The catalytic activity of the 2‐hydroxyethyl‐substituted Pd‐PEPPSI complexes has been examined in the Sonogashira cross‐coupling reaction by using phenylacetylene and aryl bromide. The Pd‐PEPPSI complexes have demonstrated great activity in the Sonogashira cross‐coupling reaction. The molecular and crystal structures of the three of the Pd‐PEPPSI complexes were determined by single‐crystal X‐ray diffraction method. X‐ray studies show that all the molecular structures adopt slightly distorted square‐planar geometry around the palladium (II) center.