Synthesis and investigation of catalytic activity of phenylene - And biphenylene bridged bimetallic Palladium-PEPPSI complexes

Imik F., YAŞAR S., ÖZDEMİR İ.

JOURNAL OF ORGANOMETALLIC CHEMISTRY, cilt.896, ss.162-167, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 896
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1016/j.jorganchem.2019.06.019
  • Dergi Adı: JOURNAL OF ORGANOMETALLIC CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.162-167
  • Anahtar Kelimeler: Bimetallic N-heterocyclic carbene complex, Palladium, C-C bond formation, Sonogashira, Heck, Suzuki, HETEROCYCLIC CARBENE COMPLEXES, CROSS-COUPLING REACTIONS, C BOND FORMATION, SUZUKI-MIYAURA, MIZOROKI-HECK, ROOM-TEMPERATURE, ARYL BROMIDES, COPPER-FREE, SONOGASHIRA REACTIONS, BUCHWALD-HARTWIG
  • İnönü Üniversitesi Adresli: Evet

Özet

A series of phenylene and biphenylene-bridged N-heterocyclic carbene (NHC) and their bimetallic NHC -Pd-PEPPSI complexes were reported and fully characterized by H-1 NMR, C-13 NMR, HRMS, FTIR, and elemental analysis. The N tags with different electronic and steric properties were used on the synthesis of bridged bimetallic NHC-Pd-PEPPSI (PEPPSI: Pyridine Enhanced Precatalyst Preparation Stabilization Initiation) complexes. The catalytic properties of the bridged bimetallic NHCePd-PEPPSI complexes were investigated in the different C-C coupling reaction such as Suzuki-Miyaura reactions of aryl bromides with arylboronic acid, the Heck coupling reactions of aryl bromide with styrene and in the Sonogashira reactions of aryl bromides with phenylacetylene. Generally, all bridged bimetallic NHCePd-PEPPSI complexes showed good catalytic activity in the CeC coupling reactions. (c) 2019 Elsevier B.V. All rights reserved.