反应详情

5-t-Butyl-1,3,4-thiadiazol-2-yl isocyanate dimer (0.05 mole), the dimethyl acetal of 2-allylamino-3-methoxypropionaldehyde (0.1 mole) and benzene (60 ml) are charged into a glass reaction vessel equipped with a mechanical stirrer, thermometer and reflux condenser. The reaction mixture is heated at reflux for a period of about 30 minutes. After this time the mixture is stripped of benzene under reduced pressure to yield a solid product as the residue. This residue is then recrystallized to yield the desired product the dimethyl acetal of 2-[1-allyl-3-(5-t-butyl-1,3,4-thiadiazol-2-yl)ureido]-3-methoxypropionaldehyde.

1. customequipped with a mechanical stirrer
2. temperaturethermometer and reflux condenser
3. temperatureThe reaction mixture is heated
4. temperatureat reflux for a period of about 30 minutes
5. customto yield a solid product as the residue
6. customThis residue is then recrystallized