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38.5 g of 2-benzyloxybenzylamine hydrochloride are suspended in 400 ml of distilled toluene and heated at a bath temperature of 140°. Whilst stirring, phosgene is introduced and after about 50 minutes the solution becomes clear. After a further 10 minutes, the addition of phosgene is interrupted and boiling is continued for a further hour. The solution is then left to cool a little and the toluene is distilled off in vacuo. A sample of the oil remaining was distilled in a bulb tube: Boiling point, bath temperature 120°/0.06 torr.

1. temperatureheated at a bath temperature of 140°
2. waitboiling is continued for a further hour
3. waitThe solution is then left
4. distillationis distilled off in vacuo
5. distillationA sample of the oil remaining was distilled in a bulb tube
6. customBoiling point, bath temperature 120°/0.06 torr