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Diels-Alder reaction

[deelz-ahl-der] /ˈdilzˈɑl dər/
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.
Origin of Diels-Alder reaction
named after O. Diels and K. Alder Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for Diels-Alder reaction

Diels-Alder reaction

(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
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
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