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Updated: Jun 5, 2026

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
5-Iodo-2,7-dimethyl-3-phenyl-sulfonyl-1-benzofuran
Abstract:
The title compound, C(16)H(13)IO(3)S, was prepared by the oxidation of 5-iodo-2,7-dimethyl-3-phenyl-sulfanyl-1-benzofuran with 3-chloro-peroxy-benzoic acid. The phenyl ring makes a dihedral angle of 76.31 (8)° with the plane of the benzofuran fragment. The crystal structure is stabilized by aromatic π-π inter-actions between the furan and benzene rings of neighbouring mol-ecules, and between the benzene rings of neighbouring mol-ecules; the centroid-centroid distances within the stack are 3.700 (4) and 3.788 (4) Å. In addition, the crystal structure exhibits inter- and intra-molecular C-H⋯O inter-actions, and an I⋯O halogen bond with an I⋯O distance of 3.282 (2) Å and a nearly linear C-I⋯O angle of 165.69 (8)°.
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