Propyl 3-aminobut-2-enoate → n-Propyl 5-(2-methoxybenzoyl)-2,6-dimethyl-4-(2-methyl-4-oxo-4H-chromen-8-yl)-1,4-dihydro-pyridine-3-carboxylate

Participants

Reaction Steps

240 mg (0.62 mmol) of 1-(2-methoxyphenyl)-2-[(2-methyl-4-oxo-4H-chromen-8-yl)methylene]-butane-1,3-dione are heated with 94 mg (0.62 mmol) of n-propyl 3-aminocrotonate in 5 ml of 2-propanol under reflux overnight. The solvent is removed in vacuo, and the residue is purified by preparative HPLC. 108 mg (33% of theory) of the title compound are obtained.

Provenance & Evidence