Definition of Diels–Alder reaction in English:

Diels–Alder reaction

Syllabification: Diels–Al·der re·ac·tion
Pronunciation: /ˌdēlzˈôldər rēˌakSH(ə)n


An addition reaction in which a conjugated diene reacts with a compound with a double or triple bond so as to form a six-membered ring.


1940s: named after Otto Diels (1876–1954), and Kurt Alder (1902–58), German chemists.

Definition of Diels–Alder reaction in:

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Pronunciation: ˈnɔɪs(ə)m
having an extremely offensive smell