Abstract Lanthanide triflate complexes of the type [Ln (OTf) 3](Ln= La, Sm, Nd, Yb, Lu) serve as effective, recyclable catalysts for the rapid intramolecular hydroalkoxylation (HO)/cyclization of primary/secondary and aliphatic/aromatic hydroxyalkenes in imidazolium- based room-temperature ionic liquids (RTILs) to yield the corresponding furan, pyran, spirobicyclic furan, spirobicyclic furan/pyran, benzofuran, and isochroman derivatives. ...
[Smith et al. Journal of the American Chemical Society, 1951 , vol. 73, p. 5267,5269 Journal of the American Chemical Society, 1952 , vol. 74, p. 2018]
