3-Amino-2-butenenitrile → Cyclobutylmethyl 5-cyano-2,6-dimethyl-4-(2-methyl-4-oxo-4H-chromen-8-yl)-1,4-dihydropyridine-3-carboxylate

Participants

Reaction Steps

66 mg (0.19 mmol) of cyclobutylmethyl 2-[(2-methyl-4-oxo-4H-chromen-8-yl)methylene]-3-oxobutanoate are dissolved with 16 mg (0.19 mmol) of 3-aminobut-2-enenitrile in 3 ml of ethanol and heated under reflux under argon for 24 h. The suspension is allowed to cool and filtered with suction, and the remaining solid is washed with methanol. 45 mg (57% of theory) of the title compound are obtained as a white solid.

Provenance & Evidence