- FLAVONOIDS, XXXVI REACTION OF 3-ALKYL- OR -ARYLSULFONYLOXYFLAVANONES WITH AMINES. SYNTHESIS OF 3-DIALKYLAMINOFLAVANONES
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Reactions of 3-alkyl- or -arylsulfonyloxyflavanones (1a-h) with primary and tertiary amines gave mixtures of the corresponding flavones (2a-d) and aurones (3a-d), while with secondary amines, in addition to 2 and 3, 3-dialkylaminoflavanones (6-9) were also obtained.The factors which determine the ratio of products are discussed.Treatment of the 3-dialkylaminoflavones 6a and 7 with DDQ gave 3-dialkylaminoflavanones (10, 11); treatment with alkali in methanol afforded 2-dialkylamino-2-benzylcoumaran-3-ones (12, 13).
- Patonay, T.,Litkei, Gy.,Bognar, R.
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p. 135 - 146
(2007/10/02)
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