Substituted spiroketals can be readily accessed by the electrochemical oxidative cyclisation of omega-hydroxy-tetrahydropyrans. (C) 2000 Elsevier Science Ltd. All rights reserved.
Marko, I. (2000). Electrochemical oxidative cyclisation of omega-hydroxy-tetrahydropyrans to spiroketals. Tetrahedron Letters, 41(22), 4383-4387. https://doi.org/10.1016/S0040-4039(00)00656-0 (Original work published 2000)