Diels-Alder reaction

[ deelz-ahl-der ]

/ ˈdilzˈɑl dər /

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noun Chemistry.

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

Words nearby Diels-Alder reaction

dielectric heating, dielectric lens, dielectric loss, dielectric strength, Diels, Diels-Alder reaction, Dien Bien Phu, diencephalon, diene, die-off, die out

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use Diels-Alder reaction in a sentence

We haven't had any real fan reaction yet, but our collective fingers are crossed.
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Or how kicking a reaction-less eunuch in the crotch over and over again is comedy.
‘Galavant’: A Drunken, Horny Musical Fairy Tale|Melissa Leon|January 5, 2015|DAILY BEAST
Your general reaction runs along the lines of: “When will these geezers give it up and go for a mall walk or something?”
The World’s Toughest Political Quiz|Jeff Greenfield|December 31, 2014|DAILY BEAST
Jundullah and Jaish ul Adl sprang up “in reaction to that kind of oppression,” he said.
The Dangerous Drug-Funded Secret War Between Iran and Pakistan|Umar Farooq|December 29, 2014|DAILY BEAST

No one likes it when their sandcastle is knocked over, but his reaction is a bit, err, extreme.
Was Baby Jesus A Holy Terror?|Candida Moss|December 21, 2014|DAILY BEAST
While this reaction lasted he laughed away the evidence, and honestly believed he was exaggerating trifles.
The Wave|Algernon Blackwood
Ordinarily the diazo appears a little earlier than the Widal reaction—about the fourth or fifth day—but it may be delayed.
A Manual of Clinical Diagnosis|James Campbell Todd
For Lettice—the tender woman of his first acquaintance—had obviously experienced a moment of reaction.
The Wave|Algernon Blackwood
When applied to the diagnosis of typhoid fever, the phenomenon is known as the Widal reaction.
A Manual of Clinical Diagnosis|James Campbell Todd
As yet, it is the only agglutination reaction which has any practical value for the practitioner.
A Manual of Clinical Diagnosis|James Campbell Todd

British Dictionary definitions for Diels-Alder reaction

Diels-Alder reaction

/ (ˈdiːlzˈɔːldə) /

noun

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

Word Origin for Diels-Alder reaction

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