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Research Article Open access CC BY 4.0

Anion Transfer Reactions from Chiral Hypervalent Iodine Macrocycles

Mina Dumre Pandey, Tahir Awais, Krishna Pandey, Samsul Arafin, Eli Jones, Kyle N. Plunkett

Organics · pp. 52–52 · Published 20 Nov 2025

10.3390/org6040052

Abstract

The direct chlorination, bromination and azidation of beta keto esters, 2-acetyl-1-tetralone and methyl 1-oxo-2,3-dihydro-1H-indene-2-carboxylate is achieved utilizing anion-coordinated hypervalent iodine benziodazoles derived from hypervalent iodine macrocycles. This reaction, which introduces the halogen, azido or cyano group at the alpha carbon atom of beta keto esters, is accomplished in chloroform at 60 °C and results in the formation of a chiral center. Depending on the structure of the benziodazole reagent, the reaction can have mild enantioselectivity. The reaction between 2-acetyl-1-tetralone and phenylalanine-derived hypervalent iodine benziodazoles results in the chlorinated product with 26% enantiomeric excess.

Hypervalent molecule Chemistry Iodine Halogenation Chloroform Enantiomer Carbon atom Medicinal chemistry

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