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Phosphorous acid

Recent Literature

A new convenient and scalable synthesis of phenylacetic acids via iodide catalyzed reduction of mandelic acids relies on in situ generation of hydroiodic acid from catalytic sodium iodide, employing phosphorus acid as the stoichiometric reductant.
J. E. Milne, T. Storz, J. T. Colyer, O. R. Thiel, M. D. Seran, R. D. Larsen, J. A. Murry, J. Org. Chem., 2011, 76, 9519-9524.

Iodine mediates a reduction of phosphine oxides (sulfides) to phosphines using phosphonic acid under solvent-free conditions. Both tertiary monophosphine oxides and bis-phosphine oxides readily produce monodentate and bidentate phosphines, respectively, in good yields and in case of (R)-(+)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl dioxide without racemization.
J. Xiao, J. Wang, H. Zhang, J. Zhang, L.B. Han, J. Org. Chem., 2023, 88, 3909-3915.