Ester pyrolysis
{{Short description|Vacuum pyrolysis reaction}}
Ester pyrolysis in organic chemistry is a vacuum pyrolysis reaction converting esters containing a β-hydrogen atom into the corresponding carboxylic acid and the alkene. The reaction is an Ei elimination and operates in a syn fashion.
Examples include the synthesis of acrylic acid from ethyl acrylate at 590 °C,Organic Syntheses, Coll. Vol. 3, p.30 (1955); Vol. 29, p.2 (1949). [http://www.orgsyn.org/Content/pdfs/procedures/CV3P0030.pdf Link] the synthesis of 1,4-pentadiene from 1,5-pentanediol diacetate at 575 °C Organic Syntheses, Coll. Vol. 4, p.746 (1963); Vol. 38, p.78 (1958). [http://www.orgsyn.org/Content/pdfs/procedures/CV4P0746.pdf Link] or the construction of a cyclobutene framework at 700 °C Organic Syntheses, Coll. Vol. 5, p.235 (1973); Vol. 43, p.17 (1963). [http://www.orgsyn.org/Content/pdfs/procedures/CV5P0235.pdf Link]
:Image:Ester pyrolysis.png decomposes into acrylic acid and ethene (ethylene) gas at 590°C.]]
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