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Five hundred g. of 9-carbamoylfluorene was slurried in 13 liters of tetrahydrofuran under nitrogen, and the mixture was stirred and heated to 50°. Fifty ml. of Triton B was added, followed by 131 g. of acrylonitrile. The mixture was stirred at 50° for 6 hours, and 65 g. of additional acrylonitrile and 25 ml. of Triton B were added. The mixture was stirred at 50° overnight.

1. temperatureheated to 50°
2. additionof Triton B was added
3. stirringThe mixture was stirred at 50° for 6 hours
4. additionof Triton B were added
5. stirringThe mixture was stirred at 50° overnight