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Diels-Alder reaction

[deelz-ahl-der]
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noun Chemistry.
  1. the reaction in which a conjugated diene combines with a double or triple bond of a given compound to form a ring of six carbon atoms.
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Origin of Diels-Alder reaction

named after O. Diels and K. Alder
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for diels-alder reaction

Diels-Alder reaction

noun
  1. chem a type of chemical reaction in which one organic compound containing conjugated double bonds adds to another containing an ethylenic bond to form a product containing a ring
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Word Origin

C20: named after Otto Diels (1876–1954) and Kurt Alder (1902–58), German chemists
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012