Synthesis of novel palladium(II) N-heterocyclic carbene complexes and their catalytic activities in the direct C5 arylation reactions
Küçük Resim Yok
Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
New palladium(II) N-heterocyclic carbene complexes have been easily obtained in good yields from the carbene transfer reaction of silver-NHC complexes with PdCl2(PhCN)(2) and characterized by elemental analysis, H-1 NMR and C-13 NMR spectroscopy. These complexes were used as catalysts in the direct C5 arylation of 2-n-butylfuran, 2-n-butylthiophene and 2-n-propylthiazole with various aryl bromides at 130 degrees C in N,N-dimethylacetamide (DMAc) for 1 h. The arylation reactions were regioselective, and in all cases, only the C5-arylated products were formed. The corresponding arylation products were obtained in moderate to good yields by using 0.5 mol% of palladium-NHC complexes. (C) 2016 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
N-heterocyclic carbene, Direct arylation, Palladium complexes, Benzimidazole
Kaynak
Inorganica Chimica Acta
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
453
