反应详情

The catalytic hydrogenation procedure of Example 1 was repeated except that the phenyl isocyanate used therein was replaced by 1.7 g. (0.01 mole) of 1-naphthylisocyanate. Reduction was complete in 45 minutes. The catalyst was removed by filtration and the colorless filtrate then evaporated to dryness giving 1.71 g. of tan-white crude product, m.p. 134° - 135° C. The solid was recrystallized from ethanol-water to give 1.62 g. (94% yield) of dried title product, m.p. 137.5° - 138.5° C.

1. customThe catalyst was removed by filtration
2. customthe colorless filtrate then evaporated to dryness
3. customgiving 1.71 g
4. customThe solid was recrystallized from ethanol-water
5. customto give 1.62 g
6. dry with material(94% yield) of dried title product, m.p. 137.5° - 138.5° C.