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In organic reactions, selenium dioxide is often used as an oxidizing reagent employed for carrying out allylic oxidations, Riley oxidation, synthesis of diones, etc. It is used to impart a red color to glass. It finds use as a toner in photographic developing, and an active ingredient in some cold-blueing solutions.
Rabjohn, N. Selenium Dioxide Oxidation. Organic Reactions 2011, 24 (4), 261-416.
Hamigeran, B.; Trost, B. M.; Pissot-Soldermann, C.; Chen, I.; Schroeder, G. M. An Asymmetric Synthesis of Hamigeran B via a Pd Asymmetric Allylic Alkylation for Enantiodiscrimination. J. Am. Chem. Soc. 2004, 126 (14), 4480.
Brzaszcz, M.; Kloc, K.; Maposah, M.; Mlochowski, J. Selenium(IV) Oxide Catalyzed Oxidation of Aldehydes to Carboxylic Acids with Hydrogen Peroxide. Syn. Commun. 2000, 30 (24), 4425-4434.
Hazard Statements: H301-H331-H373
Toxic if swallowed. Toxic if inhaled. May cause damage to organs through prolonged or repeated exposure.
Precautionary Statements: P260-P301+P310a-P304+P340-P311a-P405-P501a
Do not breathe dust/fume/gas/mist/vapours/spray. IF SWALLOWED: Immediately call a POISON CENTER/doctor IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Call a POISON CENTER/doctor. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.