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Updated: Jun 1, 2026

A Two-Step Protocol for Umpolung Functionalization of Ketones Via Enolonium Species
Published on: August 16, 2018
2-(4-Fluoro-phen-yl)-3-methyl-sulfinyl-5-phenyl-1-benzofuran
Abstract:
In the title mol-ecule, C(21)H(15)FO(2)S, the O atom and the methyl group of the methyl-sulfinyl substituent are situated on the opposite sides of the plane through the benzofuran fragment. The benzofuran ring plane makes dihedral angles of 28.63 (6) and 31.55 (5)° with the 4-fluoro-phenyl and phenyl rings, respectively. Weak C-H⋯F and C-H⋯O hydrogen bonds and inter-molecular C-H⋯π inter-actions are present in the crystal structure. The title crystal was refined as an inversion twin with a 0.39 (7):0.61 (7) domain ratio.
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