N-(3-benzhydroxypropyl)piperazine → N-[5-[3,4-di(beta-methoxyethoxy)phenyl)-2,4-pentadienoyl]-N'-(3-benzhydroxypropyl)piperazine

Participants

Reaction Steps

To a solution of 650 mg (1.2 mmol) of N-(3-benzhydroxypropyl)piperazine in dry tetrahydrofuran (5 ml) was added a solution of 966 mg (2.0 mmol) of N-[5-[3,4-di(β-methoxyethoxymethoxy)phenyl]2,4-pentadienoyl]thiazolidine-2-thione in dry tetrahydrofuran (6 ml), and the mixture was reacted at room temperature for 14 hours. The reaction mixture was concentrated by evaporation under reduced pressure, diluted with chloroform and washed, in turn, with 2N aqueous solution of sodium hydroxide and water. The organic layer was dried over anhydrous sodium sulfate and concentrated by evaporation under reduced pressure. The residue was subjected to silica gel column chromatography, eluted with 1% methanol in chloroform, to give 1.09 g (1.6 mmol) of N-[5-[3,4-di(β-methoxyethoxy)phenyl)-2,4-pentadienoyl]-N'-(3-benzhydroxypropyl)piperazine.

Provenance & Evidence