反应详情

温度

-20 °C

This example illustrates the second step of the process of the invention for preparing the compounds of formula C. In this example a mixture containing 12 g. (0.037 mole) of 1,2-epoxy-3-[5-(2-(bicyclo[2.2.1]hept-7-yl]ethylaminocarbonyl)thiazol-2-yloxy]propane, 12 g. (0.164 mole) of t-butylamine and 20 ml. of ethanol is allowed to stand at room temperature for 12 hours. The mixture is then evaporated under vacuum to remove the ethanol solvent and the resulting residue dissolved in 50 ml. of ethyl acetate and cooled to -20° C, and maintained at this temperature for 2 hours. The mixture is then filtered and the resulting filter cake washed with cold (about 0° C) ethyl ether and then recrystallized from ethyl acetate affording 1-t-butylamino-3-(5-[2-(bicyclo[2.2.1]hept-7-yl)ethylaminocarbonyl]thiazol-2-yloxy)propan-2-ol.

1. customfor preparing the compounds of formula C
2. customThe mixture is then evaporated under vacuum
3. customto remove the ethanol solvent
4. dissolutionthe resulting residue dissolved in 50 ml
5. temperaturemaintained at this temperature for 2 hours
6. filtrationThe mixture is then filtered
7. filtrationthe resulting filter cake
8. washwashed with cold (about 0° C) ethyl ether
9. customrecrystallized from ethyl acetate