Pinacol coupling reaction

Pinacol coupling reaction
Named after Pinacol
Reaction type Coupling reaction
Identifiers
Organic Chemistry Portal pinacol-coupling-reaction

A pinacol coupling reaction is an organic reaction in which a carbon–carbon bond is formed between the carbonyl groups of an aldehyde or a ketone in presence of an electron donor in a free radical process.[1] The reaction product is a vicinal diol. The reaction is named after pinacol (also known as 2,3-dimethyl-2,3-butanediol or tetramethylethylene glycol), which is the product of this reaction when done with acetone as reagent. The reaction is usually a homocoupling but intramolecular cross-coupling reactions are also possible. Pinacol was discovered by Wilhelm Rudolph Fittig in 1859.

  1. ^ Fittig R (1859). "Ueber einige Producte der trockenen Destillation essigsaurer Salze" [On some products of the dry distillation of acetate salts]. Justus Liebigs Annalen der Chemie (in German). 110: 23–45. doi:10.1002/jlac.18591100103.
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