Acetyl chloride → HCID 131735953, compound

Participants

Reaction Steps

Acetyl chloride (36.4 mL, 515.7 mmol) was slowly added at 0° C. to methanol (200.0 mL) under stirring. A solution of 4-(5-bromo-thiophen-2-yl)-2-oxo-3-butenoic acid (39.6 g, 151.7 mmol) prepared in Step 1 in methanol (20.0 mL) was added to the reaction mixture at room temperature. The reaction mixture was stirred at 80° C. for 18 hours and then filtered to give 34.0 g of the titled compound as a yellow solid.

Provenance & Evidence