Tetra-n-butylammonium peroxydisulfate

Numerous sulfur and phosphorus peroxy compounds such as monopersulfuric acid (Caro s acid, la), monopersulfate (Oxone, Ib), ammonium monopersulfate Ic, tetra n-butyl-ammonium monopersulfate Id, peroxydisulfates 2a and 2b", tetra n-butylammonium peroxydisulfate 2c, symmetrical bissulfonyl peroxide 3 , acyl sulfonyl peroxide 4 , unsymmetrical sulfonyl peroxide 5 , sulfinyl peroxy intermediates 6a, sulfonyl peroxy intermediate 6b, sulfonimidoyl peroxy intermediate 7, bis(diphenyl phosphinyl) peroxide 8 , unsymmetrical phosphorus peroxide 9 and phosphoranyl peroxy intermediate 10" are known. Recently, many researchers have shown interest in the preparation and... 

The mechanism by which y./i-unsaturated ketones (see Scheme 16), /i-keto esters, and uracil derivatives react with iodine in the presence of bis(tetra-n-butylammonium) peroxydisulfate (318) in acetonitrile to give the appropriate iodinated products in good yields is unclear.289 The mechanism may involve the cleavage of (318) to give an n-butylammonium sulfate radical, which can react to form a cationic iodine radical and sulfate anion the substrate then reacts with the iodine radical to form an iodine-bridged intermediate. 

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See also in sourсe #XX -- [ ]

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