반응 #651869

반응 방정식

zinc acetate dihydrate

Sodium hydroxide

L-carnosine

→

L-carnosine zinc

수율 96.6%

용매

methanol

methanol

반응 조건

후처리

1. 1
   기타to prepare a uniform solution
2. 2
   workup.ADDITIONwas added dropwise over 30 minutes to the uniform solution
3. 3
   기타As a result, white precipitate was gradually formed
4. 4
   workup.ADDITIONAfter completion of the addition
5. 5
   workup.WAITleft
6. 6
   workup.WAITto stand overnight
7. 7
   여과filtered
8. 8
   여과The resultant filter cake
9. 9
   세척was then washed with water (140 ml)
10. 10
    기타air-dried at 80° C. for 5 hours

실험 절차

Sodium hydroxide (3.51 g) was dissolved in methanol (100 ml), and L-carnosine (9.96 g) was added to the solution to prepare a uniform solution. A solution with zinc acetate dihydrate (9.67 g) dissolved in methanol (145 ml) was added dropwise over 30 minutes to the uniform solution. As a result, white precipitate was gradually formed. After completion of the addition, the mixture was stirred for 2 hours, left to stand overnight and then filtered. The resultant filter cake was then washed with water (140 ml) and air-dried at 80° C. for 5 hours to obtain a crystalline L-carnosine zinc salt (12.4 g) as white powdery crystals.

출처