Ketyl

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A ketyl group in organic chemistry is a radical with the general structure C-O. in which an oxygen radical is bonded directly to carbon. This radical is very unstable and appears in chemical reactions as a reactive intermediate. Ketyls can be formed as radical anions by one-electron reduction of carbonyls with alkali metals. Ketyls are also involved in the pinacol coupling reaction and the McMurry reaction. They can also be used as reagent for determinding small amounts of water. The ketyl-molecule gets dark blue dyed.