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Prins reaction information


Prins reaction
Named after Hendrik Jacobus Prins
Reaction type Coupling reaction
Identifiers
Organic Chemistry Portal prins-reaction
RSC ontology ID RXNO:0000048

The Prins reaction is an organic reaction consisting of an electrophilic addition of an aldehyde or ketone to an alkene or alkyne followed by capture of a nucleophile or elimination of an H+ ion.[1][2][3] The outcome of the reaction depends on reaction conditions. With water and a protic acid such as sulfuric acid as the reaction medium and formaldehyde the reaction product is a 1,3-diol (3). When water is absent, the cationic intermediate loses a proton to give an allylic alcohol (4). With an excess of formaldehyde and a low reaction temperature the reaction product is a dioxane (5). When water is replaced by acetic acid the corresponding esters are formed.

Scheme 1. The Prins reaction
Scheme 1. The Prins reaction
  1. ^ Condensation of formaldehyde with some unsaturated compounds H. J. Prins, Chemisch Weekblad, 16, 64, 1072, 1510 1919
  2. ^ Chemical Abstracts 13, 3155 1919
  3. ^ Arundale, E.; Mikeska, L. A. (1952). "The Olefin-Aldehyde Condensation. The Prins Reaction". Chemical Reviews. 51 (3): 505–555. doi:10.1021/cr60160a004.

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