3-Methoxybenzaldehyde → HCID 59094103, compound

Participants

Reaction Steps

A solution of KOH 50% (3 ml) is added to an equimolar solution of 7-allyloxy-8acetyl -3-methylflavone (2.5 g, 0.0075 mol) and 3-methoxy-benzaldehyde (1.01 g, 0.0075 mol) in ethanol 95%; the addition is performed under energetic stirring at room temperature. The reaction is left under stirring for one night and then diluted with water and acidified; the precipitate is separated by filtration and dried under vacuum. The compound is crystallized by methanol to give 2.4 g of product m.p. 90-92° C., 1H-NMR (CDCl3)δ:2.20 (s, 3H); 3.84 (s, 3H); 4.74 (d, 2H, J=5.1 Hz); 5.1-5.3 (m, 2H); 5.91-6.02 (m, 1H); 6.96-7.18 (m, 4H); 7.31 (d, 1H, J=16 Hz); 7.32-7.35 (m, 1H); 7.36-7.43 (m, 3H); 7.55-7.59 (m, 2H); 8.34 (d, 1H, J=8.9Hz).

Provenance & Evidence