Pyrrole-2-carbonyl chloride → 4-Amino-7-(Pyrrol-2-carbonyloxy)-8-Methyl-Benzopyran-2-one

Participants

Reaction Steps

A solution of pyrrole-2-carboxylic acid chloride (0.065 gm) in methylene chloride (0.5 ml) was added to a suspension of 4-amino-7-hydroxy-8-methyl-benzopyran-2-one (0.095 gm) in pyridine (2 ml). The suspension was heated at 70 for 10 mins. to obtain a homogeneous solution. The reaction mixture was then diluted with water, filtered and the solid was crystallized form dimethylformamide/water to afford the title compound. MS: m/e 284 (M+).

Provenance & Evidence