反应详情

A solution of 41.9 g 1-acetyl-6-chloro-2-indolinone (educt V.1) and 136 ml triethyl orthobenzoate in 150 ml acetic anhydride is stirred for six hours at 120° C. After cooling the mixture is evaporated down by half, the crystals precipitated are suction filtered and dried at 100° C. in vacuo.

1. temperatureAfter cooling the mixture
2. customis evaporated down by half
3. customthe crystals precipitated
4. filtrationare suction filtered
5. customdried at 100° C. in vacuo