反应详情

To a degassed solution of 4-heptylbenzoic acid (3.0 g, 13.6 mmol) in anhydrous toluene (30 mL) and Et3N (3 mL, 21.5 mmol), was added diphenyl phosphoryl azide (2 mL, 9.3 mmol) dropwise. After completion of the addition, the reaction mixture was heated to reflux and stirred for 2 hours. The mixture was concentrated to dryness under reduced pressure to give the product, 1-heptyl-4-isocyanatobenzene (79), as an oil, which was used directly in the next reaction without further purification.

1. additionAfter completion of the addition
2. temperaturethe reaction mixture was heated
3. temperatureto reflux
4. concentrationThe mixture was concentrated to dryness under reduced pressure