Solid supports osmium tetroxide

Syn hydroxyladon is most commonly performed using osmium tetroxide or potassium permanganate, and addition usually occurs hx)mrhe less hindered side of the double bond in the absence of other directing effects. With Aese reagents, the steieospecificity of syn addition results from formation of cyclic ester intermediates. Support for these arises from isolation of solid addition complexes (1) on reaction of... 

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