Triflic Acid Mediated Dealkylative Lactonisation via NMR-Observable Alkyloxonium Intermediates
作者:M. Paz Muñoz、Guy C. Lloyd-Jones
DOI:10.1002/ejoc.200800970
日期:2009.2
self-catalysed reaction with the pent-4-enoate to generate an oxonium triflate intermediate (rate ˜ kobsd.[TfOH]2[ester]1), possibly via the dimer (TfOH)2. The oxonium triflate intermediate then evolves to the ?-lactone according to unimolecular kinetics, liberating MeOTf in an SNi reaction. 2H-labelling experiments with TfOD suggest that the acid protonates the carbonyl moiety of the ester, with subsequent intramolecular
Lafont; Lambrey; D'Athis, European Journal of Medicinal Chemistry, 1982, vol. 17, # 2, p. 181 - 186
作者:Lafont、Lambrey、D'Athis、et al.
DOI:——
日期:——
Lambrey; Lafont; Jacquot, European Journal of Medicinal Chemistry, 1980, vol. 15, # 5, p. 463 - 468
作者:Lambrey、Lafont、Jacquot
DOI:——
日期:——
Synthesis and transformations of 5,5-disubstituted 3-alkenyloxolan-2-ones
作者:T. V. Kochikyan、M. A. Samvelyan、A. S. Galstyan、V. M. Muzalevskii、V. G. Nenaidenko
DOI:10.1134/s1070428016050110
日期:2016.5
4,4-disubstituted 2-alkenylbutanolides. By oxidation of the latter with hydrogen peroxide and formic acid diololactones were obtained that in conditions of pinacol-pinacolone rearrangement and oxidation with leadtetraacetate afforded formyl- and epoxybutanolides of new structure.