Dimethylformamide → HCID 14834217, compound

Participants

Reaction Steps

To a solution of 500 mg of o-chlorobenzaldehyde and 840 mg of methyl 4-diethylphosphonocrotonate dissolved in 5 ml of tetrahydrofuran, 142 mg of sodium hydride (60% oily dispersion) was added under ice-cooling. Imeediately, 2 ml of dimethylformamide was added and the mixture was stirred at room temperature for 2 hours. The mixture was poured into water and extracted twice with ether. The organic layer was washed twice with water, dried and the solvent was removed by distillation. The residue was purified by silica gel column chromatography (solvent: hexane-ethyl acetate=20:1) to give 650 mg of methyl (2E, 4E)-5-(2-chlorophenyl)-2,4-pentadienoate as an oily substance.

Provenance & Evidence