Tetrahydrofuran → Cinnamoylbenzene

Participants

Reaction Steps

2.24 g (16.5 mmol) of 2-hydroxyacetophenone, 1.65 g of 5-methylisoxazole-3-carbaldehyde (14.9 mmol), and 10 ml of 25% NaOCH3 were reacted in 50 ml of dry THF to give 1.59 g (29%) of chalcone after purification. 1H NMR (300 MHz, CDCl3): δ 12.53 (s, 1H), 7.87 (d, d. J=0.6, 7.5 Hz, 1H), 7.80 (d, J=15.6 Hz, 1H), 7.69 (d, J=15.6 Hz, 1H), 7.56-7.51 (m, 1H), 7.05 (d, d, J=0.6, 8.4 Hz, 1H), 6.99-6.93 (m, 1H), 6.31 (d, J=0.3 Hz, 1H), 2.50 (s, 3H).

Provenance & Evidence