反应详情

温度

60 °C

12.5 parts of α-L-aspartyl-L-phenylalanine methyl ester hydrochloride dihydrate was dissolved in 100 parts by volume of water and aqueous sodium carbonate added to pH3, then heated to 60° C. and adjusted to pH4.6. The reaction mixture was cooled to 5° C. for three hours and the precipitate was collected on a filter and dried for 18 hours under vacuum at 60° C. to give 7.6 parts α-L-aspartyl-L-phenylalanine methyl ester.

1. additionadded to pH3
2. temperatureThe reaction mixture was cooled to 5° C. for three hours
3. customthe precipitate was collected on
4. filtrationa filter
5. customdried for 18 hours under vacuum at 60° C.