Diels-Alder reaction(redirected from Alder-Stein rules)
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Diels-Alder reaction[¦dēlz ¦äl·dər rē‚ak·shən]
The 1,4 addition of a conjugated diolefin to a compound, known as a dienophile, containing a double or triple bond; the dienophile may be activated by conjugation with a second double bond or with an electron acceptor.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.