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Updated: Jun 5, 2026

A Two-Step Protocol for Umpolung Functionalization of Ketones Via Enolonium Species
Published on: August 16, 2018
2-Methyl-5,6-methyl-enedi-oxy-3-phenyl-sulfonyl-1-benzofuran
Abstract:
The title compound, C(16)H(12)O(5)S, was prepared by oxidation of 2-methyl-5,6-methyl-ene-di-oxy-3-phenyl-sulfanyl-1-benzo-furan with 3-chloro-peroxy-benzoic acid. The phenyl ring makes a dihedral angle of 83.64 (4)° with the mean plane of the 5,6-(methyl-ene-di-oxy)-benzo-furan fragment. The crystal structure is stabilized by C-H⋯π inter-actions between a benzene H atom of the 5,6-(methyl-ene-di-oxy)-benzo-furan unit and the phenyl ring of the phenyl-sulfonyl substituent. Additionally, the crystal structure exhibits inter- and intra-molecular C-H⋯O inter-actions.
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