Synthesis and characterizations of N,N,N?,N?-tetrakis (diphenylphosphino)ethylendiamine derivatives: Use of palladium(II) complex as pre-catalyst in Suzuki coupling and Heck reactions
[ X ]
Tarih
2009
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Oxidation of N,N,N',N'-tetrakis(diphenylphosphino)ethylendiamine (1) with elemental sulfur and selenium gives the corresponding sulfide and selenide, respectively, [(Ph2P(E))(2)NCH2CH2N(P(E)Ph-2)(2)] (E: S 1a, Se 1b). Complexes of 1 [(M2Cl4){(Ph2P)(2)NCH2CH2N(PPh2)(2)}] (M: Ni(II) 1c, Pd(II) 1d, Pt(II) 1e) were prepared by the reaction of 1 with NiCl2 or [MCl2(COD)] (M = Pd, Pt). The new compounds were characterized by NMR, IR spectroscopy and elemental analysis. The catalytic activity of Pd(II) complex 1d was tested in the Suzuki coupling reaction and Heck reaction. The palladium complex 1d catalyses the Heck reaction between styrene and aryl bromides as well as Suzuki coupling reaction between phenylboronic acid and arylbromides affording stilbenes and biphenyls in high yield, respectively. (C) 2008 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Aminophosphine, Suzuki Coupling, Heck Reaction, Catalysis, Palladium, Platinum
Kaynak
Journal of Organometallic Chemistry
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
694
Sayı
5
