Dimethylformamide → 3-Phenylprop-2-enoyl chloride

Participants

Reaction Steps

The styrene carboxylic acid copolymer (20.0g) from example 7(b) was refluxed with stirring for 2 hours in thionyl chloride (300 ml.) containing N,N-dimethylformamide (3.0 ml.). After cooling to room temperature the mixture was filtered and the polymer washed with chloroform (5 × 100 ml., containing 2% v/v ethanol): and dried in vacuo at 40° to constant weight. The title polymer (21.80g) exhibited ν max (Nujol) 1770 and 1738 cm-1 (C=O) and was yellow-green in colour.

Provenance & Evidence