Reacción #651869

Ecuación de reacción

zinc acetate dihydrate

Sodium hydroxide

L-carnosine

→

L-carnosine zinc

Rendimiento 96.6%

Disolventes

methanol

methanol

Condiciones de reacción

Tratamiento posterior

1. 1
   Otroto prepare a uniform solution
2. 2
   workup.ADDITIONwas added dropwise over 30 minutes to the uniform solution
3. 3
   OtroAs 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
   Filtraciónfiltered
8. 8
   FiltraciónThe resultant filter cake
9. 9
   Lavadowas then washed with water (140 ml)
10. 10
    Otroair-dried at 80° C. for 5 hours

Procedimiento

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.

Fuente