Benzene → HCID 13937603, compound

Participants

Reaction Steps

3-(4-chlorophenyl)-2-isoxazoline-5-carboxylic acid (2.2 g) prepared in Synthesis Example 3 was added with 20 ml of benzene and 1.4 g of thionyl chloride. After refluxing for 30 minutes, the reaction mixture was concentrated under reduced pressure. The resulting residue was dissolved in 20 ml of toluene and added with 0.7 g of isopropyl alcohol. The mixture was further added with 0.8 g of pyridine at 0° to 10° C. and reacted for an hour at the room temperature. The reaction mixture was washed with a dilute aqueous hydrochloric acid solution and successively with water. The resulting solution was concentrated under reduced pressure and then purified by silica gel column chromatography (eluent; toluene) to give 2.0 g (75% yield) of oily desired product.

Provenance & Evidence