@article{ taylor_use_1998,
  title = {The use of Nafion (R)-H to promote epoxide cyclizations},
  abstract = {Nafion(R)-H is shown to be an effective promoter of epoxide cyclizations to aromatic positions. The reactions can be done by passing a solution of the epoxide through a column packed with Nafion(R)-H, or by stirring a mixture of the compound with the acidic promoter and then filtering off the solid and washing it with the appropriate solvent. The solvent mixture that gave the highest yields had a fluorine-containing solvent, and trifluoroethanol in 3-10% amounts seems to be particularly good at maximizing yields. In general, yields are comparable to the same reactions that have been promoted by Lewis acids such as {SnCl}3 and {BF}3. {OEt}2, but the workup is significantly easier. Because of the convenience of workup and the fast rates of reaction with this super-acid catalyst, many reactions can be done in a short time period. The reaction mixtures show almost no side products. A biomimetic cyclization was also investigated using the described protocol.},
  number = {8},
  journal = {Synthesis-Stuttgart},
  author = {Taylor, S. K. and Dickinson, M. G. and May, S. A. and Pickering, D. A. and Sadek, P. C.},
  month = {August},
  year = {1998},
  note = {{WOS}:000075412000013},
  pages = {1133--1136}
}

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