4-Chlorobenzaldehyde → HCID 54088369, compound

Participants

Reaction Steps

4-(3,4-Dimethoxyphenyl)-2-oxo-2,5-dihydrofurane-3-carboxylic acid morpholide (1.00 g, 3 mmol) and 4-chlorobenzaldehyde (0.42 g, 3 mmol) were refluxed with ethanol (15 ml) and a small amount of piperidine (3 drops) for 3 h, then the reaction mixture was concentrated. The residue was dissolved in ethyl acetate (5 ml), petrol ether (2.5 ml) was added and the solution was applied onto a flash chromatography column (silica gel, 30 g). The column was eluted with ethyl acetate/petrol ether (2:1). The fractions containing the compound with the Rf (ethyl acetate/petrol ether, 2:1): 0.32 were collected and concentrated. 5-(4-Chlorobenzylidene)-4-(3,4-dimethoxyphenyl)-2-oxo-2,5-dihydro-furane-3-carboxylic acid morpholide was precipitated by addition of petrol ether.

Provenance & Evidence