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Diels-Alder reaction

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.

named after O. Diels and K. Alder

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World English Dictionary
Diels-Alder reaction (ˈdiːlzˈɔːldə)
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
[C20: named after Otto Diels (1876--1954) and Kurt Alder (1902--58), German chemists]

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