New 1,2,4,5-tetrakis-(N-imidazoliniummethyl)benzene and 1,2,4,5-tetrakis(N-benzimidazoliummethyl)benzene salts as N-heterocyclic tetracarbene precursors: synthesis and involvement in ruthenium-catalyzed allylation reactions

GÜRBÜZ N., Demir S., ÖZDEMİR İ., Cetinkaya B., BRUNEAU C.

TETRAHEDRON, cilt.66, sa.6, ss.1346-1351, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 66 Sayı: 6
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.tet.2009.12.004
  • Dergi Adı: TETRAHEDRON
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1346-1351
  • Anahtar Kelimeler: N-Heterocyclic carbene ligand, Ruthenium, Allylation, Homogeneous catalysis, REGIOSELECTIVE ALLYLIC SUBSTITUTION, ENANTIOSELECTIVE ALLYLATION, CARBENE LIGANDS, NUCLEOPHILIC-SUBSTITUTION, OLEFIN METATHESIS, ALKENE METATHESIS, O-ALLYLATION, COMPLEXES, ALKYLATION, ETHERIFICATION
  • İnönü Üniversitesi Adresli: Evet

Özet

New tetraimidazolinium and tetrabenzimidazolium salts have been prepared Upon reaction with (BuOK)-Bu-t. they generate carbene ligands, which were associated in situ to [RuCp'(MeCN)(3)]PF6 to produce new ruthenium catalysts that are active for the Substitution of allylic substrates by amines, phenols, and carbonucleophiles The influence of the N-heterocyclic core as well as that of the N-substitutents at the periphery of the salts, on reactivity and regioselectivity have been exammed (C) 2009 Elsevier Ltd All rights reserved