Palladium(II) N-heterocyclic carbene complexes as catalysts for the direct arylation of pyrrole derivatives with aryl chlorides
Küçük Resim Yok
Tarih
2017
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Silver(I) N-heterocyclic carbene complexes were synthesized in good yields by the reactions of 1,3-dialkylperhydrobenzimidazolyum salts with silver(I) oxide and used as transmetallation reagents for the synthesis of palladium(II) N-heterocyclic carbene complexes. All of the complexes were characterized using elemental analysis, H-1 NMR and C-13 NMR spectroscopy. The catalytic activity of Pd(II)-NHC complexes in the direct arylation of pyrrole derivatives was investigated. These Pd(II)-NHC complexes showed the good catalytic performance for the direct arylation of pyrrole derivatives with readily available and inexpensive aryl chlorides. The arylation reactions regioselectively produced C2- or C5-arylation products in moderate to good yields by using 1 mol% of the palladium complex. (C) 2017 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
C-H Arylation, Benzimidazolium Salts, Direct C5-Arylation, Functionalization, Imidazoles, Thiophene, Bromides, Iodides, Heck, Substituent
Kaynak
Inorganica Chimica Acta
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
465
