反应详情

0.100 g (0.31 mmol) of 2-amino-5-[(1-methoxy-2-methylindolizin-3-yl)-carbonyl]benzoic acid (Example 150 described in WO 03/084956) in 1 ml of acetic anhydride is refluxed for 3 hours. The reaction medium is concentrated under reduced pressure. 0.107 g of a yellow solid is obtained.

1. concentrationThe reaction medium is concentrated under reduced pressure