反应详情

Methyl carbamate (43.0 grams, 0.57 moles) was stirred in 500 milliliters of dry toluene. 4-chlorobenzenesulfonyl isocyanate (125 grams, 0.57 moles) was added dropwise. An exothermic reaction occurred. The reaction mixture was kept at 80° C. for 11/2hours. It was then cooled and the percipitate removed by filtration. The filtered material was washed with toluene and dried. There was obtained 159 grams of the title product, m.p. 174°-175° C.

1. customAn exothermic reaction
2. customwas kept at 80° C. for 11
3. custom2hours
4. temperatureIt was then cooled
5. customthe percipitate removed by filtration
6. washThe filtered material was washed with toluene
7. customdried