Solubilized Lanthanide Triflates: Lewis Acid Catalysis by Polyether and Poly(ethylene glycol) Complexes of Ln(OTf) 3
1998; American Chemical Society; Volume: 17; Issue: 9 Linguagem: Inglês
10.1021/om9709087
ISSN1520-6041
AutoresHelen C. Aspinall, J.L.M. Dwyer, Nick Greeves, Edward G. McIver, J. C. Woolley,
Tópico(s)Carbon dioxide utilization in catalysis
ResumoComplexes of lanthanide triflates Ln(OTf)3 with polyether (MeO(CH2CH2O)nMe) and poly(ethylene glycol) (HO(CH2CH2O)nH) ligands (n = 2−4) have been prepared and characterized, and the activity of these complexes as Lewis acid catalysts has been investigated. The complexes [Ln(OTf)3(HO(CH2CH2O)nH)] have been shown to catalyze the allylation of a range of aldehydes with allyltributylstannane, and the complexes [Ln(OTf)3(MeO(CH2CH2O)nMe)] catalyze the Diels−Alder addition of N-crotonyloxazolidinone to cyclopentadiene. The single-crystal X-ray structures of [Dy(OTf)2(H2O)2(MeO(CH2CH2O)4Me)][OTf] and [La(OTf)3(THF)(HO(CH2CH2O)4H)] are reported.
Referência(s)