Simonini complex

Acetyl hypoiodite (iodine acetate), CH3COOI, is prepared by treatment of silver acetate in acetic acid with iodine at room temperature [779, 780], The reagent cleaves vicinal diols to dicarbonyl compounds [779] and degrades tertiary alcohols to ketones [780], Acetyl hypoiodite is also an intermediate in the reaction of alkenes with the so-called Simonini complex, an addition product of iodine with 2 mol of silver acetate [781, 782, 783],... 

For the preparation of iodoacetylenes the alkali hypoiodite may be replaced by an acyl hypoiodite in the form of a Simonini complex, [(C6H5COO)2Ag]I. 

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