4-[But-3-enyl-(2,4-dimethoxybenzyl)-carbamoyl]-pent-4-enoic acid methyl ester → 3-(1-Benzyl-2-oxo-2,5,6,7-tetrahydro-1H-azepin-3-yl)-propionic acid methyl ester

Participants

Reaction Steps

150 mg of the compound (c) (0.476 mmol) prepared by the above Step 2 was added to the catalyst solution containing 40 mg of ruthenium (0.047 mmol) dissolved in CH2Cl2. Then the mixture was stirred for 24 hrs at room temperature, filtered and concentrated in vacuo. The resultant was purified by Silica gel column chromatography with methanol/chloroform (1:10) solvent mixture as an eluant to give 108 mg of the title compound (d) (yield: 79%).

Provenance & Evidence