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Diels-Alder reaction

American  
[deelz-ahl-der] / ˈdilzˈɑl dər /

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.

Diels-Alder reaction British  
/ ˈdiːlzˈɔːldə /

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

"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

Etymology

Origin of Diels-Alder reaction

Named after O. Diels and K. Alder

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He tested the organic molecule’s ability to drive a Diels-Alder reaction, which can build rings of carbon atoms.

From New York Times • Oct. 6, 2021

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.