1-Hydroxybenzotriazole → HCID 57855786, compound

Participants

Reaction Steps

A 0.2 g quantity of the [2-(3-cyclopropylmethoxy-4-methoxyphenyl)oxazol-4-yl]methylamine obtained in Reference Example 13 was suspended in 4 ml of acetone. To the obtained suspension were added 0.2 g of 1-hydroxybenzotriazole, 0.29 g of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride and 0.14 g of 3-methylpicolinic acid, and the mixture was heated and refluxed for 30 minutes. The reaction mixture was cooled, water was then added thereto, and extraction was performed with ethyl acetate. The organic layer was washed with water twice, and the solvent was concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=1:1) to give 0.16 g of white powdery N-[2-(3-cyclopropylmethoxy-4-methoxyphenyl)oxazol-4-ylmethyl]-3-methylpicolinamide.

Provenance & Evidence