Master Organic Chemistry Reaction Guide

Dihydroxylation of Alkenes to give 1,2-diols (vicinal diols)

Description: Treatment of alkenes with osmium tetroxide (OsO4) leads to the formation of 1,2-diols (“vicinal diols”).

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2 thoughts on “Dihydroxylation of Alkenes to give 1,2-diols (vicinal diols)

  1. On the “Oxidative cleavage of alkenes to ketones/carboxylic acids using KMnO4” page, the reaction looks a lot different. So why does it say on this page “Also note that cold, alkaline KMnO4 does exactly the same reaction”? Is this just for when it’s cold? Thanks in advance for the help!!

    1. hey im no expert, but my orgo teacher made sure to make the distinction that cold KMnO4 will do this reaction – and warm concentrated KMnO4 will do oxidative cleavage. Hope this helps :)

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