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COMPLEMENTARY COUPLING OF o-QUINONE METHIDES WITH 3-(N,N-DIETHYLAMINO)ACROLEIN – SYNTHESIS OF 1H-BENZO[f]CHROMENE-2-CARBALDEHYDES

Антон В. Лукашенко, Виталий А. Осянин, Дмитрий В. Осипов, Юрий Н. Климочкин
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Abstract


A series of 1H-benzo[f]chromene-2‑carbaldehydes was obtained from naphthol Mannich bases and 3-(N,N-diethylamino)acrolein via a cascade reaction comprising [4+2] cycloaddition of generated in situ 1,2-naphthoquinone-2-methides and a push-pull β-enaminoaldehyde with consecutive elimination of diethylamine.

Authors: Anton V. Lukashenko, Vitaly A. Osyanin*,
Dmitry V. Osipov, Yuri N. Klimochkin


Keywords


1H-benzo[f]chromene-2-carbaldehydes; Mannich bases; о-quinone methides; cascade reactions; Diels–Alder reaction

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