反应详情

To a solution of 4-chlorobenzylamine (0.50 g, 3.5 mmol) in toluene (15 mL) was added phosgene (7.3 mL, 14 mmol, 1.93 M solution in toluene). The resulting mixture was stirred at ambient temperature for 15 minutes, then heated to reflux. After 2 hours at reflux, the mixture was cooled to ambient temperature and concentrated in vacuo to afford 0.70 g (100% yield) of 4-chlorobenzylisocyanate, a compound of formula (Y), as a yellow liquid; NMR (CDCl3) 7.4-7.2 (m, 4), 4.4 (m, 2) ppm.

1. temperatureheated to reflux
2. temperatureAfter 2 hours at reflux
3. temperaturethe mixture was cooled to ambient temperature
4. concentrationconcentrated in vacuo