Water → 8-acrylamido-3-methyl-4-oxo-2-phenyl-4H-1-benzopyran

Participants

Reaction Conditions

Reaction Steps

A solution of 1.75 ml of acryloyl chloride in 15 ml of anhydrous tetrahydrofuran was added dropwise at -10° C. to a stirred mixture of 5 g of 8-amino-3-methyl-4-oxo-2-phenyl-4H-1-benzopyran and 3 ml of triethylamine in 60 ml of anhydrous tetrahydrofuran. After stirring at 0° C. for 1 hour and at ambient temperature for 1 hour, the reaction mixture was poured into water and filtered under suction. The filter cake was washed with water. Desiccation gave 5.5 g of the title compound, m.p. 229°-230° C.

Provenance & Evidence