反应详情

A solution of the compound obtained in Step 1 (670 mg, 4.52 mmol) and 3-methylglutaric anhydride (579 mg, 4.52 mmol) in THF (20 mL) was heated with reflux for 14 hr. The reaction solution was concentrated under reduced pressure to give 5-((4-cyano-3-methoxyphenyl)amino)-3-methyl-5-oxopentanoic acid (1.35 g, 4.89 mmol, quantitative) as a brownish-red oil.

1. temperaturewith reflux for 14 hr
2. concentrationThe reaction solution was concentrated under reduced pressure