Structural and Chemical Analysis of Organic and Inorganic Compounds
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Abstract
Abstract
Abstract An iodine-mediated oxidative annulation of N-pyridyl sulfonimidamides is reported, providing access to 2-substituted [1,2,3,5]thiatriazolo[3,4-a]pyridine 2-oxides through intramolecular N–N bond formation. This transition metal-free process offers a concise entry to bench-stable, highly heteroatom-rich sulfur(VI) heterocycles. In addition, divergent cyclizations during the preparation of alkyl sulfonimidamide precursors afford structurally distinct sulfur(IV) thiadiazole derivatives. The results of radical-trapping experiments suggest a pathway via an N-centered radical leading to cyclization followed by oxidative aromatization.
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@article{Sahu2026Iodine,
title = {Iodine-Mediated Oxidative N–N Bond Formations Providing Fused 1,2,3,5-Thiatriazole Derivatives from N -Pyridinyl Sulfonimidamides},
author = {Chandan Chittapriya Sahu and Shulei Pan and Yijie Hu and Kari T. Rissanen and Carsten Bolm},
journal = {Organic Letters},
year = {2026},
doi = {10.1021/acs.orglett.6c03874},
url = {https://doi.org/10.1021/acs.orglett.6c03874}
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