Chloroacetyl chloride → HCID 54074187, compound

Participants

Reaction Conditions

Reaction Steps

1 g (6 mmol) of 3-diethylamino-phenol is dissolved is 20 ml of chloroform with exclusion of moisture. 1 g (9 mmol) of chloroacetyl chloride is added dropwise in the course of 30 minutes. Silica gel (about 10 g in total) is then introduced until the entire reaction solution has been absorbed, and the mixture is heated at 60-70° C. for 6 days. Finally, the silica gel is filtered off with suction through a G4 frit and washed with chloroform until the wash solution remains colourless. The dark red organic phases are combined and the solvent is stripped off on a rotary evaporator. 0.4 g of a dark red solid is obtained and is subsequently separated into the isomers by column chromatography over silica gel using chloroform as the solvent. The cis-isomer is obtained in the first runnings as a blue fraction, and the trans-isomer is obtained as a red-violet fraction. After the solvents have been stripped off, the resulting colorant isomers are dried at 95° C. under an oil pump vacuum for 7 hours.

Provenance & Evidence