反应详情

Phenylalanine (75 g) was refluxed with 488 ml of concentrated HCl and 165 ml of formalin for 30 minutes. Then a further 165 ml of HCl and 75 ml of formalin were added and the mixture refluxed for six more hours. After cooling, it was filtered, washed with a small amount of methanol, and dried overnight in a vacuum oven. This material was then treated for an hour with refluxing isopropanol and filtered after cooling to give 28 gms.

1. temperaturethe mixture refluxed for six more hours
2. temperatureAfter cooling
3. filtrationit was filtered
4. washwashed with a small amount of methanol
5. customdried overnight in a vacuum oven
6. additionThis material was then treated for an hour with refluxing isopropanol
7. filtrationfiltered
8. temperatureafter cooling
9. customto give 28 gms